-@c Copyright (C) 1988,1989,1992,1993,1994,1996,1998,1999,2000,2001,2002, 2003
+@c Copyright (C) 1988,1989,1992,1993,1994,1996,1998,1999,2000,2001,2002,2003,2004
@c Free Software Foundation, Inc.
@c This is part of the GCC manual.
@c For copying conditions, see the file gcc.texi.
-@node C Implementation
-@chapter C Implementation-defined behavior
-@cindex implementation-defined behavior, C language
-
-A conforming implementation of ISO C is required to document its
-choice of behavior in each of the areas that are designated
-``implementation defined.'' The following lists all such areas,
-along with the section number from the ISO/IEC 9899:1999 standard.
-
-@menu
-* Translation implementation::
-* Environment implementation::
-* Identifiers implementation::
-* Characters implementation::
-* Integers implementation::
-* Floating point implementation::
-* Arrays and pointers implementation::
-* Hints implementation::
-* Structures unions enumerations and bit-fields implementation::
-* Qualifiers implementation::
-* Preprocessing directives implementation::
-* Library functions implementation::
-* Architecture implementation::
-* Locale-specific behavior implementation::
-@end menu
-
-@node Translation implementation
-@section Translation
-
-@itemize @bullet
-@item
-@cite{How a diagnostic is identified (3.10, 5.1.1.3).}
-
-Diagnostics consist of all the output sent to stderr by GCC.
-
-@item
-@cite{Whether each nonempty sequence of white-space characters other than
-new-line is retained or replaced by one space character in translation
-phase 3 (5.1.1.2).}
-@end itemize
-
-@node Environment implementation
-@section Environment
-
-The behavior of these points are dependent on the implementation
-of the C library, and are not defined by GCC itself.
-
-@node Identifiers implementation
-@section Identifiers
-
-@itemize @bullet
-@item
-@cite{Which additional multibyte characters may appear in identifiers
-and their correspondence to universal character names (6.4.2).}
-
-@item
-@cite{The number of significant initial characters in an identifier
-(5.2.4.1, 6.4.2).}
-
-For internal names, all characters are significant. For external names,
-the number of significant characters are defined by the linker; for
-almost all targets, all characters are significant.
-
-@end itemize
-
-@node Characters implementation
-@section Characters
-
-@itemize @bullet
-@item
-@cite{The number of bits in a byte (3.6).}
-
-@item
-@cite{The values of the members of the execution character set (5.2.1).}
-
-@item
-@cite{The unique value of the member of the execution character set produced
-for each of the standard alphabetic escape sequences (5.2.2).}
-
-@item
-@cite{The value of a @code{char} object into which has been stored any
-character other than a member of the basic execution character set (6.2.5).}
-
-@item
-@cite{Which of @code{signed char} or @code{unsigned char} has the same range,
-representation, and behavior as ``plain'' @code{char} (6.2.5, 6.3.1.1).}
-
-@item
-@cite{The mapping of members of the source character set (in character
-constants and string literals) to members of the execution character
-set (6.4.4.4, 5.1.1.2).}
-
-@item
-@cite{The value of an integer character constant containing more than one
-character or containing a character or escape sequence that does not map
-to a single-byte execution character (6.4.4.4).}
-
-@item
-@cite{The value of a wide character constant containing more than one
-multibyte character, or containing a multibyte character or escape
-sequence not represented in the extended execution character set (6.4.4.4).}
-
-@item
-@cite{The current locale used to convert a wide character constant consisting
-of a single multibyte character that maps to a member of the extended
-execution character set into a corresponding wide character code (6.4.4.4).}
-
-@item
-@cite{The current locale used to convert a wide string literal into
-corresponding wide character codes (6.4.5).}
-
-@item
-@cite{The value of a string literal containing a multibyte character or escape
-sequence not represented in the execution character set (6.4.5).}
-@end itemize
-
-@node Integers implementation
-@section Integers
-
-@itemize @bullet
-@item
-@cite{Any extended integer types that exist in the implementation (6.2.5).}
-
-@item
-@cite{Whether signed integer types are represented using sign and magnitude,
-two's complement, or one's complement, and whether the extraordinary value
-is a trap representation or an ordinary value (6.2.6.2).}
-
-GCC supports only two's complement integer types, and all bit patterns
-are ordinary values.
-
-@item
-@cite{The rank of any extended integer type relative to another extended
-integer type with the same precision (6.3.1.1).}
-
-@item
-@cite{The result of, or the signal raised by, converting an integer to a
-signed integer type when the value cannot be represented in an object of
-that type (6.3.1.3).}
-
-@item
-@cite{The results of some bitwise operations on signed integers (6.5).}
-@end itemize
-
-@node Floating point implementation
-@section Floating point
-
-@itemize @bullet
-@item
-@cite{The accuracy of the floating-point operations and of the library
-functions in @code{<math.h>} and @code{<complex.h>} that return floating-point
-results (5.2.4.2.2).}
-
-@item
-@cite{The rounding behaviors characterized by non-standard values
-of @code{FLT_ROUNDS} @gol
-(5.2.4.2.2).}
-
-@item
-@cite{The evaluation methods characterized by non-standard negative
-values of @code{FLT_EVAL_METHOD} (5.2.4.2.2).}
-
-@item
-@cite{The direction of rounding when an integer is converted to a
-floating-point number that cannot exactly represent the original
-value (6.3.1.4).}
-
-@item
-@cite{The direction of rounding when a floating-point number is
-converted to a narrower floating-point number (6.3.1.5).}
-
-@item
-@cite{How the nearest representable value or the larger or smaller
-representable value immediately adjacent to the nearest representable
-value is chosen for certain floating constants (6.4.4.2).}
-
-@item
-@cite{Whether and how floating expressions are contracted when not
-disallowed by the @code{FP_CONTRACT} pragma (6.5).}
-
-@item
-@cite{The default state for the @code{FENV_ACCESS} pragma (7.6.1).}
-
-@item
-@cite{Additional floating-point exceptions, rounding modes, environments,
-and classifications, and their macro names (7.6, 7.12).}
-
-@item
-@cite{The default state for the @code{FP_CONTRACT} pragma (7.12.2).}
-
-@item
-@cite{Whether the ``inexact'' floating-point exception can be raised
-when the rounded result actually does equal the mathematical result
-in an IEC 60559 conformant implementation (F.9).}
-
-@item
-@cite{Whether the ``underflow'' (and ``inexact'') floating-point
-exception can be raised when a result is tiny but not inexact in an
-IEC 60559 conformant implementation (F.9).}
-
-@end itemize
-
-@node Arrays and pointers implementation
-@section Arrays and pointers
-
-@itemize @bullet
-@item
-@cite{The result of converting a pointer to an integer or
-vice versa (6.3.2.3).}
-
-A cast from pointer to integer discards most-significant bits if the
-pointer representation is larger than the integer type,
-sign-extends@footnote{Future versions of GCC may zero-extend, or use
-a target-defined @code{ptr_extend} pattern. Do not rely on sign extension.}
-if the pointer representation is smaller than the integer type, otherwise
-the bits are unchanged.
-@c ??? We've always claimed that pointers were unsigned entities.
-@c Shouldn't we therefore be doing zero-extension? If so, the bug
-@c is in convert_to_integer, where we call type_for_size and request
-@c a signed integral type. On the other hand, it might be most useful
-@c for the target if we extend according to POINTERS_EXTEND_UNSIGNED.
-
-A cast from integer to pointer discards most-significant bits if the
-pointer representation is smaller than the integer type, extends according
-to the signedness of the integer type if the pointer representation
-is larger than the integer type, otherwise the bits are unchanged.
-
-When casting from pointer to integer and back again, the resulting
-pointer must reference the same object as the original pointer, otherwise
-the behavior is undefined. That is, one may not use integer arithmetic to
-avoid the undefined behavior of pointer arithmetic as proscribed in 6.5.6/8.
-
-@item
-@cite{The size of the result of subtracting two pointers to elements
-of the same array (6.5.6).}
-
-@end itemize
-
-@node Hints implementation
-@section Hints
-
-@itemize @bullet
-@item
-@cite{The extent to which suggestions made by using the @code{register}
-storage-class specifier are effective (6.7.1).}
-
-The @code{register} specifier affects code generation only in these ways:
-
-@itemize @bullet
-@item
-When used as part of the register variable extension, see
-@ref{Explicit Reg Vars}.
-
-@item
-When @option{-O0} is in use, the compiler allocates distinct stack
-memory for all variables that do not have the @code{register}
-storage-class specifier; if @code{register} is specified, the variable
-may have a shorter lifespan than the code would indicate and may never
-be placed in memory.
-
-@item
-On some rare x86 targets, @code{setjmp} doesn't save the registers in
-all circumstances. In those cases, GCC doesn't allocate any variables
-in registers unless they are marked @code{register}.
-
-@end itemize
-
-@item
-@cite{The extent to which suggestions made by using the inline function
-specifier are effective (6.7.4).}
-
-GCC will not inline any functions if the @option{-fno-inline} option is
-used or if @option{-O0} is used. Otherwise, GCC may still be unable to
-inline a function for many reasons; the @option{-Winline} option may be
-used to determine if a function has not been inlined and why not.
-
-@end itemize
-
-@node Structures unions enumerations and bit-fields implementation
-@section Structures, unions, enumerations, and bit-fields
-
-@itemize @bullet
-@item
-@cite{Whether a ``plain'' int bit-field is treated as a @code{signed int}
-bit-field or as an @code{unsigned int} bit-field (6.7.2, 6.7.2.1).}
-
-@item
-@cite{Allowable bit-field types other than @code{_Bool}, @code{signed int},
-and @code{unsigned int} (6.7.2.1).}
-
-@item
-@cite{Whether a bit-field can straddle a storage-unit boundary (6.7.2.1).}
-
-@item
-@cite{The order of allocation of bit-fields within a unit (6.7.2.1).}
-
-@item
-@cite{The alignment of non-bit-field members of structures (6.7.2.1).}
-
-@item
-@cite{The integer type compatible with each enumerated type (6.7.2.2).}
-
-@end itemize
-
-@node Qualifiers implementation
-@section Qualifiers
-
-@itemize @bullet
-@item
-@cite{What constitutes an access to an object that has volatile-qualified
-type (6.7.3).}
-
-@end itemize
-
-@node Preprocessing directives implementation
-@section Preprocessing directives
-
-@itemize @bullet
-@item
-@cite{How sequences in both forms of header names are mapped to headers
-or external source file names (6.4.7).}
-
-@item
-@cite{Whether the value of a character constant in a constant expression
-that controls conditional inclusion matches the value of the same character
-constant in the execution character set (6.10.1).}
-
-@item
-@cite{Whether the value of a single-character character constant in a
-constant expression that controls conditional inclusion may have a
-negative value (6.10.1).}
-
-@item
-@cite{The places that are searched for an included @samp{<>} delimited
-header, and how the places are specified or the header is
-identified (6.10.2).}
-
-@item
-@cite{How the named source file is searched for in an included @samp{""}
-delimited header (6.10.2).}
-
-@item
-@cite{The method by which preprocessing tokens (possibly resulting from
-macro expansion) in a @code{#include} directive are combined into a header
-name (6.10.2).}
-
-@item
-@cite{The nesting limit for @code{#include} processing (6.10.2).}
-
-GCC imposes a limit of 200 nested @code{#include}s.
-
-@item
-@cite{Whether the @samp{#} operator inserts a @samp{\} character before
-the @samp{\} character that begins a universal character name in a
-character constant or string literal (6.10.3.2).}
-
-@item
-@cite{The behavior on each recognized non-@code{STDC #pragma}
-directive (6.10.6).}
-
-@item
-@cite{The definitions for @code{__DATE__} and @code{__TIME__} when
-respectively, the date and time of translation are not available (6.10.8).}
-
-If the date and time are not available, @code{__DATE__} expands to
-@code{@w{"??? ?? ????"}} and @code{__TIME__} expands to
-@code{"??:??:??"}.
-
-@end itemize
-
-@node Library functions implementation
-@section Library functions
-
-The behavior of these points are dependent on the implementation
-of the C library, and are not defined by GCC itself.
-
-@node Architecture implementation
-@section Architecture
-
-@itemize @bullet
-@item
-@cite{The values or expressions assigned to the macros specified in the
-headers @code{<float.h>}, @code{<limits.h>}, and @code{<stdint.h>}
-(5.2.4.2, 7.18.2, 7.18.3).}
-
-@item
-@cite{The number, order, and encoding of bytes in any object
-(when not explicitly specified in this International Standard) (6.2.6.1).}
-
-@item
-@cite{The value of the result of the sizeof operator (6.5.3.4).}
-
-@end itemize
-
-@node Locale-specific behavior implementation
-@section Locale-specific behavior
-
-The behavior of these points are dependent on the implementation
-of the C library, and are not defined by GCC itself.
-
@node C Extensions
@chapter Extensions to the C Language Family
@cindex extensions, C language
* Nested Functions:: As in Algol and Pascal, lexical scoping of functions.
* Constructing Calls:: Dispatching a call to another function.
* Typeof:: @code{typeof}: referring to the type of an expression.
-* Lvalues:: Using @samp{?:}, @samp{,} and casts in lvalues.
* Conditionals:: Omitting the middle operand of a @samp{?:} expression.
* Long Long:: Double-word integers---@code{long long int}.
* Complex:: Data types for complex numbers.
function.
* Return Address:: Getting the return or frame address of a function.
* Vector Extensions:: Using vector instructions through built-in functions.
+* Offsetof:: Special syntax for implementing @code{offsetof}.
* Other Builtins:: Other built-in functions.
* Target Builtins:: Built-in functions specific to particular targets.
+* Target Format Checks:: Format checks specific to particular targets.
* Pragmas:: Pragmas accepted by GCC.
* Unnamed Fields:: Unnamed struct/union fields within structs/unions.
* Thread-Local:: Per-thread variables.
by braces; in this construct, parentheses go around the braces. For
example:
-@example
+@smallexample
(@{ int y = foo (); int z;
if (y > 0) z = y;
else z = - y;
z; @})
-@end example
+@end smallexample
@noindent
is a valid (though slightly more complex than necessary) expression
``maximum'' function is commonly defined as a macro in standard C as
follows:
-@example
+@smallexample
#define max(a,b) ((a) > (b) ? (a) : (b))
-@end example
+@end smallexample
@noindent
@cindex side effects, macro argument
But this definition computes either @var{a} or @var{b} twice, with bad
results if the operand has side effects. In GNU C, if you know the
-type of the operands (here let's assume @code{int}), you can define
+type of the operands (here taken as @code{int}), you can define
the macro safely as follows:
-@example
+@smallexample
#define maxint(a,b) \
(@{int _a = (a), _b = (b); _a > _b ? _a : _b; @})
-@end example
+@end smallexample
Embedded statements are not allowed in constant expressions, such as
the value of an enumeration constant, the width of a bit-field, or
In G++, the result value of a statement expression undergoes array and
function pointer decay, and is returned by value to the enclosing
-expression. For instance, if @code{A} is a class, then
+expression. For instance, if @code{A} is a class, then
@smallexample
A a;
@cindex macros, local labels
GCC allows you to declare @dfn{local labels} in any nested block
-scope. A local label is just like an ordinary label, but you can
+scope. A local label is just like an ordinary label, but you can
only reference it (with a @code{goto} statement, or by taking its
-address) within the block in which it was declared.
+address) within the block in which it was declared.
A local label declaration looks like this:
-@example
+@smallexample
__label__ @var{label};
-@end example
+@end smallexample
@noindent
or
-@example
+@smallexample
__label__ @var{label1}, @var{label2}, /* @r{@dots{}} */;
-@end example
+@end smallexample
Local label declarations must come at the beginning of the block,
before any ordinary declarations or statements.
function, the label will be multiply defined in that function. A
local label avoids this problem. For example:
-@example
+@smallexample
#define SEARCH(value, array, target) \
do @{ \
__label__ found; \
(value) = -1; \
found:; \
@} while (0)
-@end example
+@end smallexample
This could also be written using a statement-expression:
-@example
+@smallexample
#define SEARCH(array, target) \
(@{ \
__label__ found; \
found: \
value; \
@})
-@end example
+@end smallexample
Local label declarations also make the labels they declare visible to
nested functions, if there are any. @xref{Nested Functions}, for details.
value has type @code{void *}. This value is a constant and can be used
wherever a constant of that type is valid. For example:
-@example
+@smallexample
void *ptr;
/* @r{@dots{}} */
ptr = &&foo;
-@end example
+@end smallexample
To use these values, you need to be able to jump to one. This is done
with the computed goto statement@footnote{The analogous feature in
C, where one can do more than simply store label addresses in label
variables.}, @code{goto *@var{exp};}. For example,
-@example
+@smallexample
goto *ptr;
-@end example
+@end smallexample
@noindent
Any expression of type @code{void *} is allowed.
One way of using these constants is in initializing a static array that
will serve as a jump table:
-@example
+@smallexample
static void *array[] = @{ &&foo, &&bar, &&hack @};
-@end example
+@end smallexample
Then you can select a label with indexing, like this:
-@example
+@smallexample
goto *array[i];
-@end example
+@end smallexample
@noindent
Note that this does not check whether the subscript is in bounds---array
An alternate way to write the above example is
-@example
+@smallexample
static const int array[] = @{ &&foo - &&foo, &&bar - &&foo,
&&hack - &&foo @};
goto *(&&foo + array[i]);
-@end example
+@end smallexample
@noindent
This is more friendly to code living in shared libraries, as it reduces
name is local to the block where it is defined. For example, here we
define a nested function named @code{square}, and call it twice:
-@example
+@smallexample
@group
foo (double a, double b)
@{
return square (a) + square (b);
@}
@end group
-@end example
+@end smallexample
The nested function can access all the variables of the containing
function that are visible at the point of its definition. This is
called @dfn{lexical scoping}. For example, here we show a nested
function which uses an inherited variable named @code{offset}:
-@example
+@smallexample
@group
bar (int *array, int offset, int size)
@{
/* @r{@dots{}} */ access (array, i) /* @r{@dots{}} */
@}
@end group
-@end example
+@end smallexample
Nested function definitions are permitted within functions in the places
where variable definitions are allowed; that is, in any block, before
It is possible to call the nested function from outside the scope of its
name by storing its address or passing the address to another function:
-@example
+@smallexample
hack (int *array, int size)
@{
void store (int index, int value)
intermediate (store, size);
@}
-@end example
+@end smallexample
Here, the function @code{intermediate} receives the address of
@code{store} as an argument. If @code{intermediate} calls @code{store},
containing function, exiting the nested function which did the
@code{goto} and any intermediate functions as well. Here is an example:
-@example
+@smallexample
@group
bar (int *array, int offset, int size)
@{
return -1;
@}
@end group
-@end example
+@end smallexample
A nested function always has internal linkage. Declaring one with
@code{extern} is erroneous. If you need to declare the nested function
before its definition, use @code{auto} (which is otherwise meaningless
for function declarations).
-@example
+@smallexample
bar (int *array, int offset, int size)
@{
__label__ failure;
@}
/* @r{@dots{}} */
@}
-@end example
+@end smallexample
@node Constructing Calls
@section Constructing Function Calls
the function tried to return (as long as your caller expects
that data type).
+However, these built-in functions may interact badly with some
+sophisticated features or other extensions of the language. It
+is, therefore, not recommended to use them outside very simple
+functions acting as mere forwarders for their arguments.
+
@deftypefn {Built-in Function} {void *} __builtin_apply_args ()
This built-in function returns a pointer to data
describing how to perform a call with the same arguments as were passed
There are two ways of writing the argument to @code{typeof}: with an
expression or with a type. Here is an example with an expression:
-@example
+@smallexample
typeof (x[0](1))
-@end example
+@end smallexample
@noindent
This assumes that @code{x} is an array of pointers to functions;
Here is an example with a typename as the argument:
-@example
+@smallexample
typeof (int *)
-@end example
+@end smallexample
@noindent
Here the type described is that of pointers to @code{int}.
be used to define a safe ``maximum'' macro that operates on any
arithmetic type and evaluates each of its arguments exactly once:
-@example
+@smallexample
#define max(a,b) \
(@{ typeof (a) _a = (a); \
typeof (b) _b = (b); \
_a > _b ? _a : _b; @})
-@end example
+@end smallexample
@cindex underscores in variables in macros
@cindex @samp{_} in variables in macros
@item
This declares @code{y} with the type of what @code{x} points to.
-@example
+@smallexample
typeof (*x) y;
-@end example
+@end smallexample
@item
This declares @code{y} as an array of such values.
-@example
+@smallexample
typeof (*x) y[4];
-@end example
+@end smallexample
@item
This declares @code{y} as an array of pointers to characters:
-@example
+@smallexample
typeof (typeof (char *)[4]) y;
-@end example
+@end smallexample
@noindent
It is equivalent to the following traditional C declaration:
-@example
+@smallexample
char *y[4];
-@end example
+@end smallexample
To see the meaning of the declaration using @code{typeof}, and why it
-might be a useful way to write, let's rewrite it with these macros:
+might be a useful way to write, rewrite it with these macros:
-@example
+@smallexample
#define pointer(T) typeof(T *)
#define array(T, N) typeof(T [N])
-@end example
+@end smallexample
@noindent
Now the declaration can be rewritten this way:
-@example
+@smallexample
array (pointer (char), 4) y;
-@end example
+@end smallexample
@noindent
Thus, @code{array (pointer (char), 4)} is the type of arrays of 4
@emph{Compatibility Note:} In addition to @code{typeof}, GCC 2 supported
a more limited extension which permitted one to write
-@example
+@smallexample
typedef @var{T} = @var{expr};
-@end example
+@end smallexample
@noindent
with the effect of declaring @var{T} to have the type of the expression
3.0 and 3.2 will crash; 3.2.1 and later give an error). Code which
relies on it should be rewritten to use @code{typeof}:
-@example
+@smallexample
typedef typeof(@var{expr}) @var{T};
-@end example
+@end smallexample
@noindent
This will work with all versions of GCC@.
-@node Lvalues
-@section Generalized Lvalues
-@cindex compound expressions as lvalues
-@cindex expressions, compound, as lvalues
-@cindex conditional expressions as lvalues
-@cindex expressions, conditional, as lvalues
-@cindex casts as lvalues
-@cindex generalized lvalues
-@cindex lvalues, generalized
-@cindex extensions, @code{?:}
-@cindex @code{?:} extensions
-
-Compound expressions, conditional expressions and casts are allowed as
-lvalues provided their operands are lvalues. This means that you can take
-their addresses or store values into them. All these extensions are
-deprecated.
-
-Standard C++ allows compound expressions and conditional expressions
-as lvalues, and permits casts to reference type, so use of this
-extension is not supported for C++ code.
-
-For example, a compound expression can be assigned, provided the last
-expression in the sequence is an lvalue. These two expressions are
-equivalent:
-
-@example
-(a, b) += 5
-a, (b += 5)
-@end example
-
-Similarly, the address of the compound expression can be taken. These two
-expressions are equivalent:
-
-@example
-&(a, b)
-a, &b
-@end example
-
-A conditional expression is a valid lvalue if its type is not void and the
-true and false branches are both valid lvalues. For example, these two
-expressions are equivalent:
-
-@example
-(a ? b : c) = 5
-(a ? b = 5 : (c = 5))
-@end example
-
-A cast is a valid lvalue if its operand is an lvalue. This extension
-is deprecated. A simple
-assignment whose left-hand side is a cast works by converting the
-right-hand side first to the specified type, then to the type of the
-inner left-hand side expression. After this is stored, the value is
-converted back to the specified type to become the value of the
-assignment. Thus, if @code{a} has type @code{char *}, the following two
-expressions are equivalent:
-
-@example
-(int)a = 5
-(int)(a = (char *)(int)5)
-@end example
-
-An assignment-with-arithmetic operation such as @samp{+=} applied to a cast
-performs the arithmetic using the type resulting from the cast, and then
-continues as in the previous case. Therefore, these two expressions are
-equivalent:
-
-@example
-(int)a += 5
-(int)(a = (char *)(int) ((int)a + 5))
-@end example
-
-You cannot take the address of an lvalue cast, because the use of its
-address would not work out coherently. Suppose that @code{&(int)f} were
-permitted, where @code{f} has type @code{float}. Then the following
-statement would try to store an integer bit-pattern where a floating
-point number belongs:
-
-@example
-*&(int)f = 1;
-@end example
-
-This is quite different from what @code{(int)f = 1} would do---that
-would convert 1 to floating point and store it. Rather than cause this
-inconsistency, we think it is better to prohibit use of @samp{&} on a cast.
-
-If you really do want an @code{int *} pointer with the address of
-@code{f}, you can simply write @code{(int *)&f}.
-
@node Conditionals
@section Conditionals with Omitted Operands
@cindex conditional expressions, extensions
Therefore, the expression
-@example
+@smallexample
x ? : y
-@end example
+@end smallexample
@noindent
has the value of @code{x} if that is nonzero; otherwise, the value of
This example is perfectly equivalent to
-@example
+@smallexample
x ? x : y
-@end example
+@end smallexample
@cindex side effect in ?:
@cindex ?: side effect
last element of a structure which is really a header for a variable-length
object:
-@example
+@smallexample
struct line @{
int length;
char contents[0];
struct line *thisline = (struct line *)
malloc (sizeof (struct line) + this_length);
thisline->length = this_length;
-@end example
+@end smallexample
In ISO C90, you would have to give @code{contents} a length of 1, which
means either you waste space or complicate the argument to @code{malloc}.
I.e.@: in the following, @code{f1} is constructed as if it were declared
like @code{f2}.
-@example
+@smallexample
struct f1 @{
int x; int y[];
@} f1 = @{ 1, @{ 2, 3, 4 @} @};
struct f2 @{
struct f1 f1; int data[3];
@} f2 = @{ @{ 1 @}, @{ 2, 3, 4 @} @};
-@end example
+@end smallexample
@noindent
The convenience of this extension is that @code{f1} has the desired
non-empty initialization except when the structure is the top-level
object. For example:
-@example
+@smallexample
struct foo @{ int x; int y[]; @};
struct bar @{ struct foo z; @};
struct bar b = @{ @{ 1, @{ 2, 3, 4 @} @} @}; // @r{Invalid.}
struct bar c = @{ @{ 1, @{ @} @} @}; // @r{Valid.}
struct foo d[1] = @{ @{ 1 @{ 2, 3, 4 @} @} @}; // @r{Invalid.}
-@end example
+@end smallexample
@node Empty Structures
@section Structures With No Members
GCC permits a C structure to have no members:
-@example
+@smallexample
struct empty @{
@};
-@end example
+@end smallexample
The structure will have size zero. In C++, empty structures are part
of the language. G++ treats empty structures as if they had a single
declaration and deallocated when the brace-level is exited. For
example:
-@example
+@smallexample
FILE *
concat_fopen (char *s1, char *s2, char *mode)
@{
strcat (str, s2);
return fopen (str, mode);
@}
-@end example
+@end smallexample
@cindex scope of a variable length array
@cindex variable-length array scope
You can also use variable-length arrays as arguments to functions:
-@example
+@smallexample
struct entry
tester (int len, char data[len][len])
@{
/* @r{@dots{}} */
@}
-@end example
+@end smallexample
The length of an array is computed once when the storage is allocated
and is remembered for the scope of the array in case you access it with
If you want to pass the array first and the length afterward, you can
use a forward declaration in the parameter list---another GNU extension.
-@example
+@smallexample
struct entry
tester (int len; char data[len][len], int len)
@{
/* @r{@dots{}} */
@}
-@end example
+@end smallexample
@cindex parameter forward declaration
The @samp{int len} before the semicolon is a @dfn{parameter forward
allowed you to give a name to the variable arguments just like any other
argument. Here is an example:
-@example
+@smallexample
#define debug(format, args...) fprintf (stderr, format, args)
-@end example
+@end smallexample
This is in all ways equivalent to the ISO C example above, but arguably
more readable and descriptive.
this invocation is invalid in ISO C, because there is no comma after
the string:
-@example
+@smallexample
debug ("A message")
-@end example
+@end smallexample
GNU CPP permits you to completely omit the variable arguments in this
way. In the above examples, the compiler would complain, though since
pointers outside C99 mode. For example,
this is valid in GNU C though not valid in C89:
-@example
+@smallexample
@group
struct foo @{int a[4];@};
return f().a[index];
@}
@end group
-@end example
+@end smallexample
@node Pointer Arith
@section Arithmetic on @code{void}- and Function-Pointers
automatic variable are not required to be constant expressions in GNU C@.
Here is an example of an initializer with run-time varying elements:
-@example
+@smallexample
foo (float f, float g)
@{
float beat_freqs[2] = @{ f-g, f+g @};
/* @r{@dots{}} */
@}
-@end example
+@end smallexample
@node Compound Literals
@section Compound Literals
Usually, the specified type is a structure. Assume that
@code{struct foo} and @code{structure} are declared as shown:
-@example
+@smallexample
struct foo @{int a; char b[2];@} structure;
-@end example
+@end smallexample
@noindent
Here is an example of constructing a @code{struct foo} with a compound literal:
-@example
+@smallexample
structure = ((struct foo) @{x + y, 'a', 0@});
-@end example
+@end smallexample
@noindent
This is equivalent to writing the following:
-@example
+@smallexample
@{
struct foo temp = @{x + y, 'a', 0@};
structure = temp;
@}
-@end example
+@end smallexample
You can also construct an array. If all the elements of the compound literal
are (made up of) simple constant expressions, suitable for use in
literal can be coerced to a pointer to its first element and used in
such an initializer, as shown here:
-@example
+@smallexample
char **foo = (char *[]) @{ "x", "y", "z" @};
-@end example
+@end smallexample
Compound literals for scalar types and union types are is
also allowed, but then the compound literal is equivalent
If the object being initialized has array type of unknown size, the size is
determined by compound literal size.
-@example
+@smallexample
static struct foo x = (struct foo) @{1, 'a', 'b'@};
static int y[] = (int []) @{1, 2, 3@};
static int z[] = (int [3]) @{1@};
-@end example
+@end smallexample
@noindent
The above lines are equivalent to the following:
-@example
+@smallexample
static struct foo x = @{1, 'a', 'b'@};
static int y[] = @{1, 2, 3@};
static int z[] = @{1, 0, 0@};
-@end example
+@end smallexample
@node Designated Inits
@section Designated Initializers
To specify an array index, write
@samp{[@var{index}] =} before the element value. For example,
-@example
+@smallexample
int a[6] = @{ [4] = 29, [2] = 15 @};
-@end example
+@end smallexample
@noindent
is equivalent to
-@example
+@smallexample
int a[6] = @{ 0, 0, 15, 0, 29, 0 @};
-@end example
+@end smallexample
@noindent
The index values must be constant expressions, even if the array being
@samp{[@var{first} ... @var{last}] = @var{value}}. This is a GNU
extension. For example,
-@example
+@smallexample
int widths[] = @{ [0 ... 9] = 1, [10 ... 99] = 2, [100] = 3 @};
-@end example
+@end smallexample
@noindent
If the value in it has side-effects, the side-effects will happen only once,
with @samp{.@var{fieldname} =} before the element value. For example,
given the following structure,
-@example
+@smallexample
struct point @{ int x, y; @};
-@end example
+@end smallexample
@noindent
the following initialization
-@example
+@smallexample
struct point p = @{ .y = yvalue, .x = xvalue @};
-@end example
+@end smallexample
@noindent
is equivalent to
-@example
+@smallexample
struct point p = @{ xvalue, yvalue @};
-@end example
+@end smallexample
Another syntax which has the same meaning, obsolete since GCC 2.5, is
@samp{@var{fieldname}:}, as shown here:
-@example
+@smallexample
struct point p = @{ y: yvalue, x: xvalue @};
-@end example
+@end smallexample
@cindex designators
The @samp{[@var{index}]} or @samp{.@var{fieldname}} is known as a
syntax) when initializing a union, to specify which element of the union
should be used. For example,
-@example
+@smallexample
union foo @{ int i; double d; @};
union foo f = @{ .d = 4 @};
-@end example
+@end smallexample
@noindent
will convert 4 to a @code{double} to store it in the union using
does not have a designator applies to the next consecutive element of the
array or structure. For example,
-@example
+@smallexample
int a[6] = @{ [1] = v1, v2, [4] = v4 @};
-@end example
+@end smallexample
@noindent
is equivalent to
-@example
+@smallexample
int a[6] = @{ 0, v1, v2, 0, v4, 0 @};
-@end example
+@end smallexample
Labeling the elements of an array initializer is especially useful
when the indices are characters or belong to an @code{enum} type.
For example:
-@example
+@smallexample
int whitespace[256]
= @{ [' '] = 1, ['\t'] = 1, ['\h'] = 1,
['\f'] = 1, ['\n'] = 1, ['\r'] = 1 @};
-@end example
+@end smallexample
@cindex designator lists
You can also write a series of @samp{.@var{fieldname}} and
If the same field is initialized multiple times, it will have value from
the last initialization. If any such overridden initialization has
side-effect, it is unspecified whether the side-effect happens or not.
-Currently, gcc will discard them and issue a warning.
+Currently, GCC will discard them and issue a warning.
@node Case Ranges
@section Case Ranges
You can specify a range of consecutive values in a single @code{case} label,
like this:
-@example
+@smallexample
case @var{low} ... @var{high}:
-@end example
+@end smallexample
@noindent
This has the same effect as the proper number of individual @code{case}
This feature is especially useful for ranges of ASCII character codes:
-@example
+@smallexample
case 'A' ... 'Z':
-@end example
+@end smallexample
@strong{Be careful:} Write spaces around the @code{...}, for otherwise
it may be parsed wrong when you use it with integer values. For example,
write this:
-@example
+@smallexample
case 1 ... 5:
-@end example
+@end smallexample
@noindent
rather than this:
-@example
+@smallexample
case 1...5:
-@end example
+@end smallexample
@node Cast to Union
@section Cast to a Union Type
The types that may be cast to the union type are those of the members
of the union. Thus, given the following union and variables:
-@example
+@smallexample
union foo @{ int i; double d; @};
int x;
double y;
-@end example
+@end smallexample
@noindent
both @code{x} and @code{y} can be cast to type @code{union foo}.
Using the cast as the right-hand side of an assignment to a variable of
union type is equivalent to storing in a member of the union:
-@example
+@smallexample
union foo u;
/* @r{@dots{}} */
u = (union foo) x @equiv{} u.i = x
u = (union foo) y @equiv{} u.d = y
-@end example
+@end smallexample
You can also use the union cast as a function argument:
-@example
+@smallexample
void hack (union foo);
/* @r{@dots{}} */
hack ((union foo) x);
-@end example
+@end smallexample
@node Mixed Declarations
@section Mixed Declarations and Code
within compound statements. As an extension, GCC also allows this in
C89 mode. For example, you could do:
-@example
+@smallexample
int i;
/* @r{@dots{}} */
i++;
int j = i + 2;
-@end example
+@end smallexample
Each identifier is visible from where it is declared until the end of
the enclosing block.
attribute specification inside double parentheses. The following
attributes are currently defined for functions on all targets:
@code{noreturn}, @code{noinline}, @code{always_inline},
-@code{pure}, @code{const}, @code{nothrow},
+@code{pure}, @code{const}, @code{nothrow}, @code{sentinel},
@code{format}, @code{format_arg}, @code{no_instrument_function},
@code{section}, @code{constructor}, @code{destructor}, @code{used},
@code{unused}, @code{deprecated}, @code{weak}, @code{malloc},
attributes.
@table @code
-@cindex @code{noreturn} function attribute
-@item noreturn
-A few standard library functions, such as @code{abort} and @code{exit},
-cannot return. GCC knows this automatically. Some programs define
-their own functions that never return. You can declare them
-@code{noreturn} to tell the compiler this fact. For example,
-
-@smallexample
-@group
-void fatal () __attribute__ ((noreturn));
-
-void
-fatal (/* @r{@dots{}} */)
-@{
- /* @r{@dots{}} */ /* @r{Print error message.} */ /* @r{@dots{}} */
- exit (1);
-@}
-@end group
-@end smallexample
+@c Keep this table alphabetized by attribute name. Treat _ as space.
-The @code{noreturn} keyword tells the compiler to assume that
-@code{fatal} cannot return. It can then optimize without regard to what
-would happen if @code{fatal} ever did return. This makes slightly
-better code. More importantly, it helps avoid spurious warnings of
-uninitialized variables.
-
-The @code{noreturn} keyword does not affect the exceptional path when that
-applies: a @code{noreturn}-marked function may still return to the caller
-by throwing an exception.
-
-Do not assume that registers saved by the calling function are
-restored before calling the @code{noreturn} function.
-
-It does not make sense for a @code{noreturn} function to have a return
-type other than @code{void}.
-
-The attribute @code{noreturn} is not implemented in GCC versions
-earlier than 2.5. An alternative way to declare that a function does
-not return, which works in the current version and in some older
-versions, is as follows:
+@item alias ("@var{target}")
+@cindex @code{alias} attribute
+The @code{alias} attribute causes the declaration to be emitted as an
+alias for another symbol, which must be specified. For instance,
@smallexample
-typedef void voidfn ();
-
-volatile voidfn fatal;
+void __f () @{ /* @r{Do something.} */; @}
+void f () __attribute__ ((weak, alias ("__f")));
@end smallexample
-@cindex @code{noinline} function attribute
-@item noinline
-This function attribute prevents a function from being considered for
-inlining.
+declares @samp{f} to be a weak alias for @samp{__f}. In C++, the
+mangled name for the target must be used.
+
+Not all target machines support this attribute.
-@cindex @code{always_inline} function attribute
@item always_inline
+@cindex @code{always_inline} function attribute
Generally, functions are not inlined unless optimization is specified.
For functions declared inline, this attribute inlines the function even
if no optimization level was specified.
-@cindex @code{pure} function attribute
-@item pure
-Many functions have no effects except the return value and their
-return value depends only on the parameters and/or global variables.
-Such a function can be subject
-to common subexpression elimination and loop optimization just as an
-arithmetic operator would be. These functions should be declared
-with the attribute @code{pure}. For example,
-
-@smallexample
-int square (int) __attribute__ ((pure));
-@end smallexample
-
-@noindent
-says that the hypothetical function @code{square} is safe to call
-fewer times than the program says.
-
-Some of common examples of pure functions are @code{strlen} or @code{memcmp}.
-Interesting non-pure functions are functions with infinite loops or those
-depending on volatile memory or other system resource, that may change between
-two consecutive calls (such as @code{feof} in a multithreading environment).
+@item cdecl
+@cindex functions that do pop the argument stack on the 386
+@opindex mrtd
+On the Intel 386, the @code{cdecl} attribute causes the compiler to
+assume that the calling function will pop off the stack space used to
+pass arguments. This is
+useful to override the effects of the @option{-mrtd} switch.
-The attribute @code{pure} is not implemented in GCC versions earlier
-than 2.96.
-@cindex @code{const} function attribute
@item const
+@cindex @code{const} function attribute
Many functions do not examine any values except their arguments, and
have no effects except the return value. Basically this is just slightly
more strict class than the @code{pure} attribute above, since function is not
This approach does not work in GNU C++ from 2.6.0 on, since the language
specifies that the @samp{const} must be attached to the return value.
-@cindex @code{nothrow} function attribute
-@item nothrow
-The @code{nothrow} attribute is used to inform the compiler that a
-function cannot throw an exception. For example, most functions in
-the standard C library can be guaranteed not to throw an exception
-with the notable exceptions of @code{qsort} and @code{bsearch} that
-take function pointer arguments. The @code{nothrow} attribute is not
-implemented in GCC versions earlier than 3.2.
+@item constructor
+@itemx destructor
+@cindex @code{constructor} function attribute
+@cindex @code{destructor} function attribute
+The @code{constructor} attribute causes the function to be called
+automatically before execution enters @code{main ()}. Similarly, the
+@code{destructor} attribute causes the function to be called
+automatically after @code{main ()} has completed or @code{exit ()} has
+been called. Functions with these attributes are useful for
+initializing data that will be used implicitly during the execution of
+the program.
+
+These attributes are not currently implemented for Objective-C@.
+
+@item deprecated
+@cindex @code{deprecated} attribute.
+The @code{deprecated} attribute results in a warning if the function
+is used anywhere in the source file. This is useful when identifying
+functions that are expected to be removed in a future version of a
+program. The warning also includes the location of the declaration
+of the deprecated function, to enable users to easily find further
+information about why the function is deprecated, or what they should
+do instead. Note that the warnings only occurs for uses:
+
+@smallexample
+int old_fn () __attribute__ ((deprecated));
+int old_fn ();
+int (*fn_ptr)() = old_fn;
+@end smallexample
+
+results in a warning on line 3 but not line 2.
+
+The @code{deprecated} attribute can also be used for variables and
+types (@pxref{Variable Attributes}, @pxref{Type Attributes}.)
+
+@item dllexport
+@cindex @code{__declspec(dllexport)}
+On Microsoft Windows targets and Symbian OS targets the
+@code{dllexport} attribute causes the compiler to provide a global
+pointer to a pointer in a DLL, so that it can be referenced with the
+@code{dllimport} attribute. On Microsoft Windows targets, the pointer
+name is formed by combining @code{_imp__} and the function or variable
+name.
+
+You can use @code{__declspec(dllexport)} as a synonym for
+@code{__attribute__ ((dllexport))} for compatibility with other
+compilers.
+
+On systems that support the @code{visibility} attribute, this
+attribute also implies ``default'' visibility, unless a
+@code{visibility} attribute is explicitly specified. You should avoid
+the use of @code{dllexport} with ``hidden'' or ``internal''
+visibility; in the future GCC may issue an error for those cases.
+
+Currently, the @code{dllexport} attribute is ignored for inlined
+functions, unless the @option{-fkeep-inline-functions} flag has been
+used. The attribute is also ignored for undefined symbols.
+
+When applied to C++ classes, the attribute marks defined non-inlined
+member functions and static data members as exports. Static consts
+initialized in-class are not marked unless they are also defined
+out-of-class.
+
+For Microsoft Windows targets there are alternative methods for
+including the symbol in the DLL's export table such as using a
+@file{.def} file with an @code{EXPORTS} section or, with GNU ld, using
+the @option{--export-all} linker flag.
+
+@item dllimport
+@cindex @code{__declspec(dllimport)}
+On Microsoft Windows and Symbian OS targets, the @code{dllimport}
+attribute causes the compiler to reference a function or variable via
+a global pointer to a pointer that is set up by the DLL exporting the
+symbol. The attribute implies @code{extern} storage. On Microsoft
+Windows targets, the pointer name is formed by combining @code{_imp__}
+and the function or variable name.
+
+You can use @code{__declspec(dllimport)} as a synonym for
+@code{__attribute__ ((dllimport))} for compatibility with other
+compilers.
+
+Currently, the attribute is ignored for inlined functions. If the
+attribute is applied to a symbol @emph{definition}, an error is reported.
+If a symbol previously declared @code{dllimport} is later defined, the
+attribute is ignored in subsequent references, and a warning is emitted.
+The attribute is also overridden by a subsequent declaration as
+@code{dllexport}.
+
+When applied to C++ classes, the attribute marks non-inlined
+member functions and static data members as imports. However, the
+attribute is ignored for virtual methods to allow creation of vtables
+using thunks.
+
+On the SH Symbian OS target the @code{dllimport} attribute also has
+another affect---it can cause the vtable and run-time type information
+for a class to be exported. This happens when the class has a
+dllimport'ed constructor or a non-inline, non-pure virtual function
+and, for either of those two conditions, the class also has a inline
+constructor or destructor and has a key function that is defined in
+the current translation unit.
+
+For Microsoft Windows based targets the use of the @code{dllimport}
+attribute on functions is not necessary, but provides a small
+performance benefit by eliminating a thunk in the DLL@. The use of the
+@code{dllimport} attribute on imported variables was required on older
+versions of the GNU linker, but can now be avoided by passing the
+@option{--enable-auto-import} switch to the GNU linker. As with
+functions, using the attribute for a variable eliminates a thunk in
+the DLL@.
+
+One drawback to using this attribute is that a pointer to a function
+or variable marked as @code{dllimport} cannot be used as a constant
+address. On Microsoft Windows targets, the attribute can be disabled
+for functions by setting the @option{-mnop-fun-dllimport} flag.
+
+@item eightbit_data
+@cindex eight bit data on the H8/300, H8/300H, and H8S
+Use this attribute on the H8/300, H8/300H, and H8S to indicate that the specified
+variable should be placed into the eight bit data section.
+The compiler will generate more efficient code for certain operations
+on data in the eight bit data area. Note the eight bit data area is limited to
+256 bytes of data.
+
+You must use GAS and GLD from GNU binutils version 2.7 or later for
+this attribute to work correctly.
+
+@item far
+@cindex functions which handle memory bank switching
+On 68HC11 and 68HC12 the @code{far} attribute causes the compiler to
+use a calling convention that takes care of switching memory banks when
+entering and leaving a function. This calling convention is also the
+default when using the @option{-mlong-calls} option.
+
+On 68HC12 the compiler will use the @code{call} and @code{rtc} instructions
+to call and return from a function.
+
+On 68HC11 the compiler will generate a sequence of instructions
+to invoke a board-specific routine to switch the memory bank and call the
+real function. The board-specific routine simulates a @code{call}.
+At the end of a function, it will jump to a board-specific routine
+instead of using @code{rts}. The board-specific return routine simulates
+the @code{rtc}.
+
+@item fastcall
+@cindex functions that pop the argument stack on the 386
+On the Intel 386, the @code{fastcall} attribute causes the compiler to
+pass the first two arguments in the registers ECX and EDX@. Subsequent
+arguments are passed on the stack. The called function will pop the
+arguments off the stack. If the number of arguments is variable all
+arguments are pushed on the stack.
@item format (@var{archetype}, @var{string-index}, @var{first-to-check})
@cindex @code{format} function attribute
attribute are 2 and 3.
@opindex ffreestanding
+@opindex fno-builtin
The @code{format} attribute allows you to identify your own functions
which take format strings as arguments, so that GCC can check the
calls to these functions for errors. The compiler always (unless
-@option{-ffreestanding} is used) checks formats
+@option{-ffreestanding} or @option{-fno-builtin} is used) checks formats
for the standard library functions @code{printf}, @code{fprintf},
@code{sprintf}, @code{scanf}, @code{fscanf}, @code{sscanf}, @code{strftime},
@code{vprintf}, @code{vfprintf} and @code{vsprintf} whenever such
are @code{printf_unlocked} and @code{fprintf_unlocked}.
@xref{C Dialect Options,,Options Controlling C Dialect}.
+The target may provide additional types of format checks.
+@xref{Target Format Checks,,Format Checks Specific to Particular
+Target Machines}.
+
@item format_arg (@var{string-index})
@cindex @code{format_arg} function attribute
@opindex Wformat-nonliteral
The compiler always treats @code{gettext}, @code{dgettext}, and
@code{dcgettext} in this manner except when strict ISO C support is
requested by @option{-ansi} or an appropriate @option{-std} option, or
-@option{-ffreestanding} is used. @xref{C Dialect Options,,Options
+@option{-ffreestanding} or @option{-fno-builtin}
+is used. @xref{C Dialect Options,,Options
Controlling C Dialect}.
-@item nonnull (@var{arg-index}, @dots{})
-@cindex @code{nonnull} function attribute
-The @code{nonnull} attribute specifies that some function parameters should
-be non-null pointers. For instance, the declaration:
+@item function_vector
+@cindex calling functions through the function vector on the H8/300 processors
+Use this attribute on the H8/300, H8/300H, and H8S to indicate that the specified
+function should be called through the function vector. Calling a
+function through the function vector will reduce code size, however;
+the function vector has a limited size (maximum 128 entries on the H8/300
+and 64 entries on the H8/300H and H8S) and shares space with the interrupt vector.
-@smallexample
-extern void *
-my_memcpy (void *dest, const void *src, size_t len)
- __attribute__((nonnull (1, 2)));
-@end smallexample
+You must use GAS and GLD from GNU binutils version 2.7 or later for
+this attribute to work correctly.
-@noindent
-causes the compiler to check that, in calls to @code{my_memcpy},
-arguments @var{dest} and @var{src} are non-null. If the compiler
-determines that a null pointer is passed in an argument slot marked
-as non-null, and the @option{-Wnonnull} option is enabled, a warning
-is issued. The compiler may also choose to make optimizations based
-on the knowledge that certain function arguments will not be null.
+@item interrupt
+@cindex interrupt handler functions
+Use this attribute on the ARM, AVR, C4x, M32R/D and Xstormy16 ports to indicate
+that the specified function is an interrupt handler. The compiler will
+generate function entry and exit sequences suitable for use in an
+interrupt handler when this attribute is present.
-If no argument index list is given to the @code{nonnull} attribute,
-all pointer arguments are marked as non-null. To illustrate, the
-following declaration is equivalent to the previous example:
+Note, interrupt handlers for the m68k, H8/300, H8/300H, H8S, and SH processors
+can be specified via the @code{interrupt_handler} attribute.
+
+Note, on the AVR, interrupts will be enabled inside the function.
+
+Note, for the ARM, you can specify the kind of interrupt to be handled by
+adding an optional parameter to the interrupt attribute like this:
@smallexample
-extern void *
-my_memcpy (void *dest, const void *src, size_t len)
- __attribute__((nonnull));
+void f () __attribute__ ((interrupt ("IRQ")));
@end smallexample
+Permissible values for this parameter are: IRQ, FIQ, SWI, ABORT and UNDEF@.
+
+@item interrupt_handler
+@cindex interrupt handler functions on the m68k, H8/300 and SH processors
+Use this attribute on the m68k, H8/300, H8/300H, H8S, and SH to indicate that
+the specified function is an interrupt handler. The compiler will generate
+function entry and exit sequences suitable for use in an interrupt
+handler when this attribute is present.
+
+@item long_call/short_call
+@cindex indirect calls on ARM
+This attribute specifies how a particular function is called on
+ARM@. Both attributes override the @option{-mlong-calls} (@pxref{ARM Options})
+command line switch and @code{#pragma long_calls} settings. The
+@code{long_call} attribute causes the compiler to always call the
+function by first loading its address into a register and then using the
+contents of that register. The @code{short_call} attribute always places
+the offset to the function from the call site into the @samp{BL}
+instruction directly.
+
+@item longcall/shortcall
+@cindex functions called via pointer on the RS/6000 and PowerPC
+On the RS/6000 and PowerPC, the @code{longcall} attribute causes the
+compiler to always call this function via a pointer, just as it would if
+the @option{-mlongcall} option had been specified. The @code{shortcall}
+attribute causes the compiler not to do this. These attributes override
+both the @option{-mlongcall} switch and the @code{#pragma longcall}
+setting.
+
+@xref{RS/6000 and PowerPC Options}, for more information on whether long
+calls are necessary.
+
+@item malloc
+@cindex @code{malloc} attribute
+The @code{malloc} attribute is used to tell the compiler that a function
+may be treated as if any non-@code{NULL} pointer it returns cannot
+alias any other pointer valid when the function returns.
+This will often improve optimization.
+Standard functions with this property include @code{malloc} and
+@code{calloc}. @code{realloc}-like functions have this property as
+long as the old pointer is never referred to (including comparing it
+to the new pointer) after the function returns a non-@code{NULL}
+value.
+
+@item model (@var{model-name})
+@cindex function addressability on the M32R/D
+@cindex variable addressability on the IA-64
+
+On the M32R/D, use this attribute to set the addressability of an
+object, and of the code generated for a function. The identifier
+@var{model-name} is one of @code{small}, @code{medium}, or
+@code{large}, representing each of the code models.
+
+Small model objects live in the lower 16MB of memory (so that their
+addresses can be loaded with the @code{ld24} instruction), and are
+callable with the @code{bl} instruction.
+
+Medium model objects may live anywhere in the 32-bit address space (the
+compiler will generate @code{seth/add3} instructions to load their addresses),
+and are callable with the @code{bl} instruction.
+
+Large model objects may live anywhere in the 32-bit address space (the
+compiler will generate @code{seth/add3} instructions to load their addresses),
+and may not be reachable with the @code{bl} instruction (the compiler will
+generate the much slower @code{seth/add3/jl} instruction sequence).
+
+On IA-64, use this attribute to set the addressability of an object.
+At present, the only supported identifier for @var{model-name} is
+@code{small}, indicating addressability via ``small'' (22-bit)
+addresses (so that their addresses can be loaded with the @code{addl}
+instruction). Caveat: such addressing is by definition not position
+independent and hence this attribute must not be used for objects
+defined by shared libraries.
+
+@item naked
+@cindex function without a prologue/epilogue code
+Use this attribute on the ARM, AVR, C4x and IP2K ports to indicate that the
+specified function does not need prologue/epilogue sequences generated by
+the compiler. It is up to the programmer to provide these sequences.
+
+@item near
+@cindex functions which do not handle memory bank switching on 68HC11/68HC12
+On 68HC11 and 68HC12 the @code{near} attribute causes the compiler to
+use the normal calling convention based on @code{jsr} and @code{rts}.
+This attribute can be used to cancel the effect of the @option{-mlong-calls}
+option.
+
@item no_instrument_function
@cindex @code{no_instrument_function} function attribute
@opindex finstrument-functions
be generated at entry and exit of most user-compiled functions.
Functions with this attribute will not be so instrumented.
-@item section ("@var{section-name}")
-@cindex @code{section} function attribute
-Normally, the compiler places the code it generates in the @code{text} section.
-Sometimes, however, you need additional sections, or you need certain
-particular functions to appear in special sections. The @code{section}
-attribute specifies that a function lives in a particular section.
-For example, the declaration:
+@item noinline
+@cindex @code{noinline} function attribute
+This function attribute prevents a function from being considered for
+inlining.
+
+@item nonnull (@var{arg-index}, @dots{})
+@cindex @code{nonnull} function attribute
+The @code{nonnull} attribute specifies that some function parameters should
+be non-null pointers. For instance, the declaration:
@smallexample
-extern void foobar (void) __attribute__ ((section ("bar")));
+extern void *
+my_memcpy (void *dest, const void *src, size_t len)
+ __attribute__((nonnull (1, 2)));
@end smallexample
@noindent
-puts the function @code{foobar} in the @code{bar} section.
-
-Some file formats do not support arbitrary sections so the @code{section}
-attribute is not available on all platforms.
-If you need to map the entire contents of a module to a particular
-section, consider using the facilities of the linker instead.
-
-@item constructor
-@itemx destructor
-@cindex @code{constructor} function attribute
-@cindex @code{destructor} function attribute
-The @code{constructor} attribute causes the function to be called
-automatically before execution enters @code{main ()}. Similarly, the
-@code{destructor} attribute causes the function to be called
-automatically after @code{main ()} has completed or @code{exit ()} has
-been called. Functions with these attributes are useful for
-initializing data that will be used implicitly during the execution of
-the program.
-
-These attributes are not currently implemented for Objective-C@.
-
-@cindex @code{unused} attribute.
-@item unused
-This attribute, attached to a function, means that the function is meant
-to be possibly unused. GCC will not produce a warning for this
-function.
-
-@cindex @code{used} attribute.
-@item used
-This attribute, attached to a function, means that code must be emitted
-for the function even if it appears that the function is not referenced.
-This is useful, for example, when the function is referenced only in
-inline assembly.
+causes the compiler to check that, in calls to @code{my_memcpy},
+arguments @var{dest} and @var{src} are non-null. If the compiler
+determines that a null pointer is passed in an argument slot marked
+as non-null, and the @option{-Wnonnull} option is enabled, a warning
+is issued. The compiler may also choose to make optimizations based
+on the knowledge that certain function arguments will not be null.
-@cindex @code{deprecated} attribute.
-@item deprecated
-The @code{deprecated} attribute results in a warning if the function
-is used anywhere in the source file. This is useful when identifying
-functions that are expected to be removed in a future version of a
-program. The warning also includes the location of the declaration
-of the deprecated function, to enable users to easily find further
-information about why the function is deprecated, or what they should
-do instead. Note that the warnings only occurs for uses:
+If no argument index list is given to the @code{nonnull} attribute,
+all pointer arguments are marked as non-null. To illustrate, the
+following declaration is equivalent to the previous example:
@smallexample
-int old_fn () __attribute__ ((deprecated));
-int old_fn ();
-int (*fn_ptr)() = old_fn;
+extern void *
+my_memcpy (void *dest, const void *src, size_t len)
+ __attribute__((nonnull));
@end smallexample
-results in a warning on line 3 but not line 2.
-
-The @code{deprecated} attribute can also be used for variables and
-types (@pxref{Variable Attributes}, @pxref{Type Attributes}.)
-
-@item warn_unused_result
-@cindex @code{warn_unused_result} attribute
-The @code{warn_unused_result} attribute causes a warning to be emitted
-if a caller of the function with this attribute does not use its
-return value. This is useful for functions where not checking
-the result is either a security problem or always a bug, such as
-@code{realloc}.
+@item noreturn
+@cindex @code{noreturn} function attribute
+A few standard library functions, such as @code{abort} and @code{exit},
+cannot return. GCC knows this automatically. Some programs define
+their own functions that never return. You can declare them
+@code{noreturn} to tell the compiler this fact. For example,
@smallexample
-int fn () __attribute__ ((warn_unused_result));
-int foo ()
+@group
+void fatal () __attribute__ ((noreturn));
+
+void
+fatal (/* @r{@dots{}} */)
@{
- if (fn () < 0) return -1;
- fn ();
- return 0;
+ /* @r{@dots{}} */ /* @r{Print error message.} */ /* @r{@dots{}} */
+ exit (1);
@}
+@end group
@end smallexample
-results in warning on line 5.
+The @code{noreturn} keyword tells the compiler to assume that
+@code{fatal} cannot return. It can then optimize without regard to what
+would happen if @code{fatal} ever did return. This makes slightly
+better code. More importantly, it helps avoid spurious warnings of
+uninitialized variables.
-@item weak
-@cindex @code{weak} attribute
-The @code{weak} attribute causes the declaration to be emitted as a weak
-symbol rather than a global. This is primarily useful in defining
-library functions which can be overridden in user code, though it can
-also be used with non-function declarations. Weak symbols are supported
-for ELF targets, and also for a.out targets when using the GNU assembler
-and linker.
+The @code{noreturn} keyword does not affect the exceptional path when that
+applies: a @code{noreturn}-marked function may still return to the caller
+by throwing an exception or calling @code{longjmp}.
-@item malloc
-@cindex @code{malloc} attribute
-The @code{malloc} attribute is used to tell the compiler that a function
-may be treated as if it were the malloc function. The compiler assumes
-that calls to malloc result in pointers that cannot alias anything.
-This will often improve optimization.
+Do not assume that registers saved by the calling function are
+restored before calling the @code{noreturn} function.
-@item alias ("@var{target}")
-@cindex @code{alias} attribute
-The @code{alias} attribute causes the declaration to be emitted as an
-alias for another symbol, which must be specified. For instance,
+It does not make sense for a @code{noreturn} function to have a return
+type other than @code{void}.
+
+The attribute @code{noreturn} is not implemented in GCC versions
+earlier than 2.5. An alternative way to declare that a function does
+not return, which works in the current version and in some older
+versions, is as follows:
@smallexample
-void __f () @{ /* @r{Do something.} */; @}
-void f () __attribute__ ((weak, alias ("__f")));
-@end smallexample
+typedef void voidfn ();
-declares @samp{f} to be a weak alias for @samp{__f}. In C++, the
-mangled name for the target must be used.
+volatile voidfn fatal;
+@end smallexample
-Not all target machines support this attribute.
+@item nothrow
+@cindex @code{nothrow} function attribute
+The @code{nothrow} attribute is used to inform the compiler that a
+function cannot throw an exception. For example, most functions in
+the standard C library can be guaranteed not to throw an exception
+with the notable exceptions of @code{qsort} and @code{bsearch} that
+take function pointer arguments. The @code{nothrow} attribute is not
+implemented in GCC versions earlier than 3.3.
-@item visibility ("@var{visibility_type}")
-@cindex @code{visibility} attribute
-The @code{visibility} attribute on ELF targets causes the declaration
-to be emitted with default, hidden, protected or internal visibility.
+@item pure
+@cindex @code{pure} function attribute
+Many functions have no effects except the return value and their
+return value depends only on the parameters and/or global variables.
+Such a function can be subject
+to common subexpression elimination and loop optimization just as an
+arithmetic operator would be. These functions should be declared
+with the attribute @code{pure}. For example,
@smallexample
-void __attribute__ ((visibility ("protected")))
-f () @{ /* @r{Do something.} */; @}
-int i __attribute__ ((visibility ("hidden")));
+int square (int) __attribute__ ((pure));
@end smallexample
-See the ELF gABI for complete details, but the short story is:
-
-@table @dfn
-@item default
-Default visibility is the normal case for ELF. This value is
-available for the visibility attribute to override other options
-that may change the assumed visibility of symbols.
-
-@item hidden
-Hidden visibility indicates that the symbol will not be placed into
-the dynamic symbol table, so no other @dfn{module} (executable or
-shared library) can reference it directly.
-
-@item protected
-Protected visibility indicates that the symbol will be placed in the
-dynamic symbol table, but that references within the defining module
-will bind to the local symbol. That is, the symbol cannot be overridden
-by another module.
+@noindent
+says that the hypothetical function @code{square} is safe to call
+fewer times than the program says.
-@item internal
-Internal visibility is like hidden visibility, but with additional
-processor specific semantics. Unless otherwise specified by the psABI,
-gcc defines internal visibility to mean that the function is @emph{never}
-called from another module. Note that hidden symbols, while they cannot
-be referenced directly by other modules, can be referenced indirectly via
-function pointers. By indicating that a symbol cannot be called from
-outside the module, gcc may for instance omit the load of a PIC register
-since it is known that the calling function loaded the correct value.
-@end table
+Some of common examples of pure functions are @code{strlen} or @code{memcmp}.
+Interesting non-pure functions are functions with infinite loops or those
+depending on volatile memory or other system resource, that may change between
+two consecutive calls (such as @code{feof} in a multithreading environment).
-Not all ELF targets support this attribute.
+The attribute @code{pure} is not implemented in GCC versions earlier
+than 2.96.
@item regparm (@var{number})
@cindex @code{regparm} attribute
GNU systems with GLIBC 2.1 or higher, and FreeBSD, are believed to be
safe since the loaders there save all registers. (Lazy binding can be
disabled with the linker or the loader if desired, to avoid the
-problem.)
-
-@item stdcall
-@cindex functions that pop the argument stack on the 386
-On the Intel 386, the @code{stdcall} attribute causes the compiler to
-assume that the called function will pop off the stack space used to
-pass arguments, unless it takes a variable number of arguments.
-
-@item fastcall
-@cindex functions that pop the argument stack on the 386
-On the Intel 386, the @code{fastcall} attribute causes the compiler to
-pass the first two arguments in the registers ECX and EDX. Subsequent
-arguments are passed on the stack. The called function will pop the
-arguments off the stack. If the number of arguments is variable all
-arguments are pushed on the stack.
-
-@item cdecl
-@cindex functions that do pop the argument stack on the 386
-@opindex mrtd
-On the Intel 386, the @code{cdecl} attribute causes the compiler to
-assume that the calling function will pop off the stack space used to
-pass arguments. This is
-useful to override the effects of the @option{-mrtd} switch.
-
-@item longcall/shortcall
-@cindex functions called via pointer on the RS/6000 and PowerPC
-On the RS/6000 and PowerPC, the @code{longcall} attribute causes the
-compiler to always call this function via a pointer, just as it would if
-the @option{-mlongcall} option had been specified. The @code{shortcall}
-attribute causes the compiler not to do this. These attributes override
-both the @option{-mlongcall} switch and the @code{#pragma longcall}
-setting.
-
-@xref{RS/6000 and PowerPC Options}, for more information on whether long
-calls are necessary.
-
-@item long_call/short_call
-@cindex indirect calls on ARM
-This attribute specifies how a particular function is called on
-ARM@. Both attributes override the @option{-mlong-calls} (@pxref{ARM Options})
-command line switch and @code{#pragma long_calls} settings. The
-@code{long_call} attribute causes the compiler to always call the
-function by first loading its address into a register and then using the
-contents of that register. The @code{short_call} attribute always places
-the offset to the function from the call site into the @samp{BL}
-instruction directly.
-
-@item function_vector
-@cindex calling functions through the function vector on the H8/300 processors
-Use this attribute on the H8/300, H8/300H, and H8S to indicate that the specified
-function should be called through the function vector. Calling a
-function through the function vector will reduce code size, however;
-the function vector has a limited size (maximum 128 entries on the H8/300
-and 64 entries on the H8/300H and H8S) and shares space with the interrupt vector.
+problem.)
-You must use GAS and GLD from GNU binutils version 2.7 or later for
-this attribute to work correctly.
+@item saveall
+@cindex save all registers on the H8/300, H8/300H, and H8S
+Use this attribute on the H8/300, H8/300H, and H8S to indicate that
+all registers except the stack pointer should be saved in the prologue
+regardless of whether they are used or not.
-@item interrupt
-@cindex interrupt handler functions
-Use this attribute on the ARM, AVR, C4x, M32R/D and Xstormy16 ports to indicate
-that the specified function is an interrupt handler. The compiler will
-generate function entry and exit sequences suitable for use in an
-interrupt handler when this attribute is present.
+@item section ("@var{section-name}")
+@cindex @code{section} function attribute
+Normally, the compiler places the code it generates in the @code{text} section.
+Sometimes, however, you need additional sections, or you need certain
+particular functions to appear in special sections. The @code{section}
+attribute specifies that a function lives in a particular section.
+For example, the declaration:
-Note, interrupt handlers for the m68k, H8/300, H8/300H, H8S, and SH processors
-can be specified via the @code{interrupt_handler} attribute.
+@smallexample
+extern void foobar (void) __attribute__ ((section ("bar")));
+@end smallexample
-Note, on the AVR, interrupts will be enabled inside the function.
+@noindent
+puts the function @code{foobar} in the @code{bar} section.
-Note, for the ARM, you can specify the kind of interrupt to be handled by
-adding an optional parameter to the interrupt attribute like this:
+Some file formats do not support arbitrary sections so the @code{section}
+attribute is not available on all platforms.
+If you need to map the entire contents of a module to a particular
+section, consider using the facilities of the linker instead.
+
+@item sentinel
+@cindex @code{sentinel} function attribute
+This function attribute ensures that a parameter in a function call is
+an explicit @code{NULL}. The attribute is only valid on variadic
+functions. By default, the sentinel is located at position zero, the
+last parameter of the function call. If an optional integer position
+argument P is supplied to the attribute, the sentinel must be located at
+position P counting backwards from the end of the argument list.
@smallexample
-void f () __attribute__ ((interrupt ("IRQ")));
+__attribute__ ((sentinel))
+is equivalent to
+__attribute__ ((sentinel(0)))
@end smallexample
-Permissible values for this parameter are: IRQ, FIQ, SWI, ABORT and UNDEF@.
+The attribute is automatically set with a position of 0 for the built-in
+functions @code{execl} and @code{execlp}. The built-in function
+@code{execle} has the attribute set with a position of 1.
-@item interrupt_handler
-@cindex interrupt handler functions on the m68k, H8/300 and SH processors
-Use this attribute on the m68k, H8/300, H8/300H, H8S, and SH to indicate that
-the specified function is an interrupt handler. The compiler will generate
-function entry and exit sequences suitable for use in an interrupt
-handler when this attribute is present.
+A valid @code{NULL} in this context is defined as zero with any pointer
+type. If your system defines the @code{NULL} macro with an integer type
+then you need to add an explicit cast. GCC replaces @code{stddef.h}
+with a copy that redefines NULL appropriately.
+
+The warnings for missing or incorrect sentinels are enabled with
+@option{-Wformat}.
+
+@item short_call
+See long_call/short_call.
+
+@item shortcall
+See longcall/shortcall.
+
+@item signal
+@cindex signal handler functions on the AVR processors
+Use this attribute on the AVR to indicate that the specified
+function is a signal handler. The compiler will generate function
+entry and exit sequences suitable for use in a signal handler when this
+attribute is present. Interrupts will be disabled inside the function.
@item sp_switch
Use this attribute on the SH to indicate an @code{interrupt_handler}
sp_switch ("alt_stack")));
@end smallexample
-@item trap_exit
-Use this attribute on the SH for an @code{interrupt_handler} to return using
-@code{trapa} instead of @code{rte}. This attribute expects an integer
-argument specifying the trap number to be used.
-
-@item eightbit_data
-@cindex eight bit data on the H8/300, H8/300H, and H8S
-Use this attribute on the H8/300, H8/300H, and H8S to indicate that the specified
-variable should be placed into the eight bit data section.
-The compiler will generate more efficient code for certain operations
-on data in the eight bit data area. Note the eight bit data area is limited to
-256 bytes of data.
-
-You must use GAS and GLD from GNU binutils version 2.7 or later for
-this attribute to work correctly.
+@item stdcall
+@cindex functions that pop the argument stack on the 386
+On the Intel 386, the @code{stdcall} attribute causes the compiler to
+assume that the called function will pop off the stack space used to
+pass arguments, unless it takes a variable number of arguments.
@item tiny_data
@cindex tiny data section on the H8/300H and H8S
on data in the tiny data section. Note the tiny data area is limited to
slightly under 32kbytes of data.
-@item saveall
-@cindex save all registers on the H8/300, H8/300H, and H8S
-Use this attribute on the H8/300, H8/300H, and H8S to indicate that
-all registers except the stack pointer should be saved in the prologue
-regardless of whether they are used or not.
-
-@item signal
-@cindex signal handler functions on the AVR processors
-Use this attribute on the AVR to indicate that the specified
-function is a signal handler. The compiler will generate function
-entry and exit sequences suitable for use in a signal handler when this
-attribute is present. Interrupts will be disabled inside the function.
-
-@item naked
-@cindex function without a prologue/epilogue code
-Use this attribute on the ARM, AVR, C4x and IP2K ports to indicate that the
-specified function does not need prologue/epilogue sequences generated by
-the compiler. It is up to the programmer to provide these sequences.
-
-@item model (@var{model-name})
-@cindex function addressability on the M32R/D
-@cindex variable addressability on the IA-64
-
-On the M32R/D, use this attribute to set the addressability of an
-object, and of the code generated for a function. The identifier
-@var{model-name} is one of @code{small}, @code{medium}, or
-@code{large}, representing each of the code models.
-
-Small model objects live in the lower 16MB of memory (so that their
-addresses can be loaded with the @code{ld24} instruction), and are
-callable with the @code{bl} instruction.
+@item trap_exit
+Use this attribute on the SH for an @code{interrupt_handler} to return using
+@code{trapa} instead of @code{rte}. This attribute expects an integer
+argument specifying the trap number to be used.
-Medium model objects may live anywhere in the 32-bit address space (the
-compiler will generate @code{seth/add3} instructions to load their addresses),
-and are callable with the @code{bl} instruction.
+@item unused
+@cindex @code{unused} attribute.
+This attribute, attached to a function, means that the function is meant
+to be possibly unused. GCC will not produce a warning for this
+function.
-Large model objects may live anywhere in the 32-bit address space (the
-compiler will generate @code{seth/add3} instructions to load their addresses),
-and may not be reachable with the @code{bl} instruction (the compiler will
-generate the much slower @code{seth/add3/jl} instruction sequence).
+@item used
+@cindex @code{used} attribute.
+This attribute, attached to a function, means that code must be emitted
+for the function even if it appears that the function is not referenced.
+This is useful, for example, when the function is referenced only in
+inline assembly.
-On IA-64, use this attribute to set the addressability of an object.
-At present, the only supported identifier for @var{model-name} is
-@code{small}, indicating addressability via ``small'' (22-bit)
-addresses (so that their addresses can be loaded with the @code{addl}
-instruction). Caveat: such addressing is by definition not position
-independent and hence this attribute must not be used for objects
-defined by shared libraries.
+@item visibility ("@var{visibility_type}")
+@cindex @code{visibility} attribute
+The @code{visibility} attribute on ELF targets causes the declaration
+to be emitted with default, hidden, protected or internal visibility.
-@item far
-@cindex functions which handle memory bank switching
-On 68HC11 and 68HC12 the @code{far} attribute causes the compiler to
-use a calling convention that takes care of switching memory banks when
-entering and leaving a function. This calling convention is also the
-default when using the @option{-mlong-calls} option.
+@smallexample
+void __attribute__ ((visibility ("protected")))
+f () @{ /* @r{Do something.} */; @}
+int i __attribute__ ((visibility ("hidden")));
+@end smallexample
-On 68HC12 the compiler will use the @code{call} and @code{rtc} instructions
-to call and return from a function.
+See the ELF gABI for complete details, but the short story is:
-On 68HC11 the compiler will generate a sequence of instructions
-to invoke a board-specific routine to switch the memory bank and call the
-real function. The board-specific routine simulates a @code{call}.
-At the end of a function, it will jump to a board-specific routine
-instead of using @code{rts}. The board-specific return routine simulates
-the @code{rtc}.
+@table @dfn
+@c keep this list of visibilities in alphabetical order.
-@item near
-@cindex functions which do not handle memory bank switching on 68HC11/68HC12
-On 68HC11 and 68HC12 the @code{near} attribute causes the compiler to
-use the normal calling convention based on @code{jsr} and @code{rts}.
-This attribute can be used to cancel the effect of the @option{-mlong-calls}
-option.
+@item default
+Default visibility is the normal case for ELF@. This value is
+available for the visibility attribute to override other options
+that may change the assumed visibility of symbols.
-@item dllimport
-@cindex @code{__declspec(dllimport)}
-On Windows targets, the @code{dllimport} attribute causes the compiler
-to reference a function or variable via a global pointer to a pointer
-that is set up by the Windows dll library. The pointer name is formed by
-combining @code{_imp__} and the function or variable name. The attribute
-implies @code{extern} storage.
+@item hidden
+Hidden visibility indicates that the symbol will not be placed into
+the dynamic symbol table, so no other @dfn{module} (executable or
+shared library) can reference it directly.
-Currently, the attribute is ignored for inlined functions. If the
-attribute is applied to a symbol @emph{definition}, an error is reported.
-If a symbol previously declared @code{dllimport} is later defined, the
-attribute is ignored in subsequent references, and a warning is emitted.
-The attribute is also overridden by a subsequent declaration as
-@code{dllexport}.
+@item internal
+Internal visibility is like hidden visibility, but with additional
+processor specific semantics. Unless otherwise specified by the psABI,
+GCC defines internal visibility to mean that the function is @emph{never}
+called from another module. Note that hidden symbols, while they cannot
+be referenced directly by other modules, can be referenced indirectly via
+function pointers. By indicating that a symbol cannot be called from
+outside the module, GCC may for instance omit the load of a PIC register
+since it is known that the calling function loaded the correct value.
-When applied to C++ classes, the attribute marks non-inlined
-member functions and static data members as imports. However, the
-attribute is ignored for virtual methods to allow creation of vtables
-using thunks.
+@item protected
+Protected visibility indicates that the symbol will be placed in the
+dynamic symbol table, but that references within the defining module
+will bind to the local symbol. That is, the symbol cannot be overridden
+by another module.
-On cygwin, mingw and arm-pe targets, @code{__declspec(dllimport)} is
-recognized as a synonym for @code{__attribute__ ((dllimport))} for
-compatibility with other Windows compilers.
+@end table
-The use of the @code{dllimport} attribute on functions is not necessary,
-but provides a small performance benefit by eliminating a thunk in the
-dll. The use of the @code{dllimport} attribute on imported variables was
-required on older versions of GNU ld, but can now be avoided by passing
-the @option{--enable-auto-import} switch to ld. As with functions, using
-the attribute for a variable eliminates a thunk in the dll.
+Not all ELF targets support this attribute.
-One drawback to using this attribute is that a pointer to a function or
-variable marked as dllimport cannot be used as a constant address. The
-attribute can be disabled for functions by setting the
-@option{-mnop-fun-dllimport} flag.
+@item warn_unused_result
+@cindex @code{warn_unused_result} attribute
+The @code{warn_unused_result} attribute causes a warning to be emitted
+if a caller of the function with this attribute does not use its
+return value. This is useful for functions where not checking
+the result is either a security problem or always a bug, such as
+@code{realloc}.
-@item dllexport
-@cindex @code{__declspec(dllexport)}
-On Windows targets the @code{dllexport} attribute causes the compiler to
-provide a global pointer to a pointer in a dll, so that it can be
-referenced with the @code{dllimport} attribute. The pointer name is
-formed by combining @code{_imp__} and the function or variable name.
-
-Currently, the @code{dllexport}attribute is ignored for inlined
-functions, but export can be forced by using the
-@option{-fkeep-inline-functions} flag. The attribute is also ignored for
-undefined symbols.
-
-When applied to C++ classes. the attribute marks defined non-inlined
-member functions and static data members as exports. Static consts
-initialized in-class are not marked unless they are also defined
-out-of-class.
+@smallexample
+int fn () __attribute__ ((warn_unused_result));
+int foo ()
+@{
+ if (fn () < 0) return -1;
+ fn ();
+ return 0;
+@}
+@end smallexample
-On cygwin, mingw and arm-pe targets, @code{__declspec(dllexport)} is
-recognized as a synonym for @code{__attribute__ ((dllexport))} for
-compatibility with other Windows compilers.
+results in warning on line 5.
-Alternative methods for including the symbol in the dll's export table
-are to use a .def file with an @code{EXPORTS} section or, with GNU ld,
-using the @option{--export-all} linker flag.
+@item weak
+@cindex @code{weak} attribute
+The @code{weak} attribute causes the declaration to be emitted as a weak
+symbol rather than a global. This is primarily useful in defining
+library functions which can be overridden in user code, though it can
+also be used with non-function declarations. Weak symbols are supported
+for ELF targets, and also for a.out targets when using the GNU assembler
+and linker.
@end table
that may be unused but which is compiled with @option{-Wall}. It would
not normally be appropriate to use in it human-written code, though it
could be useful in cases where the code that jumps to the label is
-contained within an @code{#ifdef} conditional. GNU C++ does not permit
+contained within an @code{#ifdef} conditional. GNU C++ does not permit
such placement of attribute lists, as it is permissible for a
declaration, which could begin with an attribute list, to be labelled in
-C++. Declarations cannot be labelled in C90 or C99, so the ambiguity
+C++. Declarations cannot be labelled in C90 or C99, so the ambiguity
does not arise there.
An attribute specifier list may appear as part of a @code{struct},
specifiers and qualifiers may be an attribute specifier list with no
other specifiers or qualifiers.
+At present, the first parameter in a function prototype must have some
+type specifier which is not an attribute specifier; this resolves an
+ambiguity in the interpretation of @code{void f(int
+(__attribute__((foo)) x))}, but is subject to change. At present, if
+the parentheses of a function declarator contain only attributes then
+those attributes are ignored, rather than yielding an error or warning
+or implying a single parameter of type int, but this is subject to
+change.
+
An attribute specifier list may appear immediately before a declarator
(other than the first) in a comma-separated list of declarators in a
declaration of more than one identifier using a single list of
GNU C extends ISO C to allow a function prototype to override a later
old-style non-prototype definition. Consider the following example:
-@example
+@smallexample
/* @r{Use prototypes unless the compiler is old-fashioned.} */
#ifdef __STDC__
#define P(x) x
@{
return x == 0;
@}
-@end example
+@end smallexample
Suppose the type @code{uid_t} happens to be @code{short}. ISO C does
not allow this example, because subword arguments in old-style
latter type before promotion. Thus in GNU C the above example is
equivalent to the following:
-@example
+@smallexample
int isroot (uid_t);
int
@{
return x == 0;
@}
-@end example
+@end smallexample
@noindent
GNU C++ does not support old-style function definitions, so this
extension (@pxref{Variable Attributes}). For example, after this
declaration:
-@example
+@smallexample
struct foo @{ int x; char y; @} foo1;
-@end example
+@end smallexample
@noindent
the value of @code{__alignof__ (foo1.y)} is 1, even though its actual
@opindex fno-common
The @code{common} attribute requests GCC to place a variable in
``common'' storage. The @code{nocommon} attribute requests the
-opposite -- to allocate space for it directly.
+opposite---to allocate space for it directly.
-These attributes override the default chosen by the
+These attributes override the default chosen by the
@option{-fno-common} and @option{-fcommon} flags respectively.
@item deprecated
Here is a structure in which the field @code{x} is packed, so that it
immediately follows @code{a}:
-@example
+@smallexample
struct foo
@{
char a;
int x[2] __attribute__ ((packed));
@};
-@end example
+@end smallexample
@item section ("@var{section-name}")
@cindex @code{section} variable attribute
@item shared
@cindex @code{shared} variable attribute
-On Windows, in addition to putting variable definitions in a named
+On Microsoft Windows, in addition to putting variable definitions in a named
section, the section can also be shared among all running copies of an
executable or DLL@. For example, this small program defines shared data
by putting it in a named section @code{shared} and marking the section
attribute with a fully initialized global definition because of the way
linkers work. See @code{section} attribute for more information.
-The @code{shared} attribute is only available on Windows@.
+The @code{shared} attribute is only available on Microsoft Windows@.
@item tls_model ("@var{tls_model}")
@cindex @code{tls_model} attribute
The @code{tls_model} attribute sets thread-local storage model
(@pxref{Thread-Local}) of a particular @code{__thread} variable,
-overriding @code{-ftls-model=} command line switch on a per-variable
+overriding @option{-ftls-model=} command line switch on a per-variable
basis.
The @var{tls_model} argument should be one of @code{global-dynamic},
@code{local-dynamic}, @code{initial-exec} or @code{local-exec}.
@subsection M32R/D Variable Attributes
-One attribute is currently defined for the M32R/D.
+One attribute is currently defined for the M32R/D@.
@table @code
@item model (@var{model-name})
(either via function call or as data in a file), it may be necessary to access
either format.
-Currently @option{-m[no-]ms-bitfields} is provided for the Windows X86
+Currently @option{-m[no-]ms-bitfields} is provided for the Microsoft Windows X86
compilers to match the native Microsoft compiler.
@end table
+@subsection Xstormy16 Variable Attributes
+
+One attribute is currently defined for xstormy16 configurations:
+@code{below100}
+
+@table @code
+@item below100
+@cindex @code{below100} attribute
+
+If a variable has the @code{below100} attribute (@code{BELOW100} is
+allowed also), GCC will place the variable in the first 0x100 bytes of
+memory and use special opcodes to access it. Such variables will be
+placed in either the @code{.bss_below100} section or the
+@code{.data_below100} section.
+
+@end table
+
@node Type Attributes
@section Specifying Attributes of Types
@cindex attribute of types
@item packed
This attribute, attached to @code{struct} or @code{union} type
definition, specifies that each member of the structure or union is
-placed to minimize the memory required. When attached to an @code{enum}
+placed to minimize the memory required. When attached to an @code{enum}
definition, it indicates that the smallest integral type should be used.
@opindex fshort-enums
In the following example @code{struct my_packed_struct}'s members are
packed closely together, but the internal layout of its @code{s} member
-is not packed -- to do that, @code{struct my_unpacked_struct} would need to
+is not packed---to do that, @code{struct my_unpacked_struct} would need to
be packed too.
@smallexample
arguments to be passed, using the @code{int *} calling convention.
The program can call @code{wait} with arguments of either type:
-@example
+@smallexample
int w1 () @{ int w; return wait (&w); @}
int w2 () @{ union wait w; return wait (&w); @}
-@end example
+@end smallexample
With this interface, @code{wait}'s implementation might look like this:
-@example
+@smallexample
pid_t wait (wait_status_ptr_t p)
@{
return waitpid (-1, p.__ip, 0);
@}
-@end example
+@end smallexample
@item unused
When attached to a type (including a @code{union} or a @code{struct}),
@option{-fstrict-aliasing}, which is on by default at @option{-O2} or
above in recent GCC versions.
+@subsection ARM Type Attributes
+
+On those ARM targets that support @code{dllimport} (such as Symbian
+OS), you can use the @code{notshared} attribute to indicate that the
+virtual table and other similar data for a class should not be
+exported from a DLL@. For example:
+
+@smallexample
+class __declspec(notshared) C @{
+public:
+ __declspec(dllimport) C();
+ virtual void f();
+@}
+
+__declspec(dllexport)
+C::C() @{@}
+@end smallexample
+
+In this code, @code{C::C} is exported from the current DLL, but the
+virtual table for @code{C} is not exported. (You can use
+@code{__attribute__} instead of @code{__declspec} if you prefer, but
+most Symbian OS code uses @code{__declspec}.)
+
@subsection i386 Type Attributes
Two attributes are currently defined for i386 configurations:
(either via function call or as data in a file), it may be necessary to access
either format.
-Currently @option{-m[no-]ms-bitfields} is provided for the Windows X86
+Currently @option{-m[no-]ms-bitfields} is provided for the Microsoft Windows X86
compilers to match the native Microsoft compiler.
@end table
To declare a function inline, use the @code{inline} keyword in its
declaration, like this:
-@example
+@smallexample
inline int
inc (int *a)
@{
(*a)++;
@}
-@end example
+@end smallexample
(If you are writing a header file to be included in ISO C programs, write
@code{__inline__} instead of @code{inline}. @xref{Alternate Keywords}.)
GCC does not inline any functions when not optimizing unless you specify
the @samp{always_inline} attribute for the function, like this:
-@example
+@smallexample
/* Prototype. */
inline void foo (const char) __attribute__((always_inline));
-@end example
+@end smallexample
@node Extended Asm
@section Assembler Instructions with C Expression Operands
For example, here is how to use the 68881's @code{fsinx} instruction:
-@example
+@smallexample
asm ("fsinx %1,%0" : "=f" (result) : "f" (angle));
-@end example
+@end smallexample
@noindent
Here @code{angle} is the C expression for the input operand while
output operand from the first input, if any. Commas separate the
operands within each group. The total number of operands is currently
limited to 30; this limitation may be lifted in some future version of
-GCC.
+GCC@.
If there are no output operands but there are input operands, you must
place two consecutive colons surrounding the place where the output
followed by the operand number. Using named operands the above example
could look like:
-@example
+@smallexample
asm ("fsinx %[angle],%[output]"
: [output] "=f" (result)
: [angle] "f" (angle));
-@end example
+@end smallexample
@noindent
Note that the symbolic operand names have no relation whatsoever to
the values in these operands before the instruction are dead and need
not be generated. Extended asm supports input-output or read-write
operands. Use the constraint character @samp{+} to indicate such an
-operand and list it with the output operands.
-
-When the constraints for the read-write operand (or the operand in which
-only some of the bits are to be changed) allows a register, you may, as
-an alternative, logically split its function into two separate operands,
-one input operand and one write-only output operand. The connection
-between them is expressed by constraints which say they need to be in
-the same location when the instruction executes. You can use the same C
-expression for both operands, or different expressions. For example,
-here we write the (fictitious) @samp{combine} instruction with
-@code{bar} as its read-only source operand and @code{foo} as its
-read-write destination:
-
-@example
+operand and list it with the output operands. You should only use
+read-write operands when the constraints for the operand (or the
+operand in which only some of the bits are to be changed) allow a
+register.
+
+You may, as an alternative, logically split its function into two
+separate operands, one input operand and one write-only output
+operand. The connection between them is expressed by constraints
+which say they need to be in the same location when the instruction
+executes. You can use the same C expression for both operands, or
+different expressions. For example, here we write the (fictitious)
+@samp{combine} instruction with @code{bar} as its read-only source
+operand and @code{foo} as its read-write destination:
+
+@smallexample
asm ("combine %2,%0" : "=r" (foo) : "0" (foo), "g" (bar));
-@end example
+@end smallexample
@noindent
The constraint @samp{"0"} for operand 1 says that it must occupy the
same place in the generated assembler code. The following would not
work reliably:
-@example
+@smallexample
asm ("combine %2,%0" : "=r" (foo) : "r" (foo), "g" (bar));
-@end example
+@end smallexample
Various optimizations or reloading could cause operands 0 and 1 to be in
different registers; GCC knows no reason not to do so. For example, the
As of GCC version 3.1, one may write @code{[@var{name}]} instead of
the operand number for a matching constraint. For example:
-@example
+@smallexample
asm ("cmoveq %1,%2,%[result]"
: [result] "=r"(result)
: "r" (test), "r"(new), "[result]"(old));
-@end example
+@end smallexample
+
+Sometimes you need to make an @code{asm} operand be a specific register,
+but there's no matching constraint letter for that register @emph{by
+itself}. To force the operand into that register, use a local variable
+for the operand and specify the register in the variable declaration.
+@xref{Explicit Reg Vars}. Then for the @code{asm} operand, use any
+register constraint letter that matches the register:
+
+@smallexample
+register int *p1 asm ("r0") = @dots{};
+register int *p2 asm ("r1") = @dots{};
+register int *result asm ("r0");
+asm ("sysint" : "=r" (result) : "0" (p1), "r" (p2));
+@end smallexample
+
+@anchor{Example of asm with clobbered asm reg}
+In the above example, beware that a register that is call-clobbered by
+the target ABI will be overwritten by any function call in the
+assignment, including library calls for arithmetic operators.
+Assuming it is a call-clobbered register, this may happen to @code{r0}
+above by the assignment to @code{p2}. If you have to use such a
+register, use temporary variables for expressions between the register
+assignment and use:
+
+@smallexample
+int t1 = @dots{};
+register int *p1 asm ("r0") = @dots{};
+register int *p2 asm ("r1") = t1;
+register int *result asm ("r0");
+asm ("sysint" : "=r" (result) : "0" (p1), "r" (p2));
+@end smallexample
Some instructions clobber specific hard registers. To describe this,
write a third colon after the input operands, followed by the names of
the clobbered hard registers (given as strings). Here is a realistic
example for the VAX:
-@example
+@smallexample
asm volatile ("movc3 %0,%1,%2"
: /* no outputs */
: "g" (from), "g" (to), "g" (count)
: "r0", "r1", "r2", "r3", "r4", "r5");
-@end example
+@end smallexample
You may not write a clobber description in a way that overlaps with an
input or output operand. For example, you may not have an operand
condition code is handled differently, and specifying @samp{cc} has no
effect. But it is valid no matter what the machine.
-If your assembler instruction modifies memory in an unpredictable
+If your assembler instructions access memory in an unpredictable
fashion, add @samp{memory} to the list of clobbered registers. This
-will cause GCC to not keep memory values cached in registers across
-the assembler instruction. You will also want to add the
-@code{volatile} keyword if the memory affected is not listed in the
-inputs or outputs of the @code{asm}, as the @samp{memory} clobber does
-not count as a side-effect of the @code{asm}.
+will cause GCC to not keep memory values cached in registers across the
+assembler instruction and not optimize stores or loads to that memory.
+You will also want to add the @code{volatile} keyword if the memory
+affected is not listed in the inputs or outputs of the @code{asm}, as
+the @samp{memory} clobber does not count as a side-effect of the
+@code{asm}. If you know how large the accessed memory is, you can add
+it as input or output but if this is not known, you should add
+@samp{memory}. As an example, if you access ten bytes of a string, you
+can use a memory input like:
+
+@smallexample
+@{"m"( (@{ struct @{ char x[10]; @} *p = (void *)ptr ; *p; @}) )@}.
+@end smallexample
+
+Note that in the following example the memory input is necessary,
+otherwise GCC might optimize the store to @code{x} away:
+@smallexample
+int foo ()
+@{
+ int x = 42;
+ int *y = &x;
+ int result;
+ asm ("magic stuff accessing an 'int' pointed to by '%1'"
+ "=&d" (r) : "a" (y), "m" (*y));
+ return result;
+@}
+@end smallexample
You can put multiple assembler instructions together in a single
@code{asm} template, separated by the characters normally used in assembly
is an example of multiple instructions in a template; it assumes the
subroutine @code{_foo} accepts arguments in registers 9 and 10:
-@example
+@smallexample
asm ("movl %0,r9\n\tmovl %1,r10\n\tcall _foo"
: /* no outputs */
: "g" (from), "g" (to)
: "r9", "r10");
-@end example
+@end smallexample
Unless an output operand has the @samp{&} constraint modifier, GCC
may allocate it in the same register as an unrelated input operand, on
instruction, you must include a branch and a label in the @code{asm}
construct, as follows:
-@example
+@smallexample
asm ("clr %0\n\tfrob %1\n\tbeq 0f\n\tmov #1,%0\n0:"
: "g" (result)
: "g" (input));
-@end example
+@end smallexample
@noindent
This assumes your assembler supports local labels, as the GNU assembler
Usually the most convenient way to use these @code{asm} instructions is to
encapsulate them in macros that look like functions. For example,
-@example
+@smallexample
#define sin(x) \
(@{ double __value, __arg = (x); \
asm ("fsinx %1,%0": "=f" (__value): "f" (__arg)); \
__value; @})
-@end example
+@end smallexample
@noindent
Here the variable @code{__arg} is used to make sure that the instruction
appears not to change, the old value of the variable may be reused later
if it happens to be found in a register.
-You can prevent an @code{asm} instruction from being deleted, moved
-significantly, or combined, by writing the keyword @code{volatile} after
+You can prevent an @code{asm} instruction from being deleted
+by writing the keyword @code{volatile} after
the @code{asm}. For example:
-@example
+@smallexample
#define get_and_set_priority(new) \
(@{ int __old; \
asm volatile ("get_and_set_priority %0, %1" \
: "=g" (__old) : "g" (new)); \
__old; @})
-@end example
+@end smallexample
@noindent
-If you write an @code{asm} instruction with no outputs, GCC will know
-the instruction has side-effects and will not delete the instruction or
-move it outside of loops.
-
The @code{volatile} keyword indicates that the instruction has
important side-effects. GCC will not delete a volatile @code{asm} if
it is reachable. (The instruction can still be deleted if GCC can
prove that control-flow will never reach the location of the
-instruction.) In addition, GCC will not reschedule instructions
-across a volatile @code{asm} instruction. For example:
+instruction.) Note that even a volatile @code{asm} instruction
+can be moved relative to other code, including across jump
+instructions. For example, on many targets there is a system
+register which can be set to control the rounding mode of
+floating point operations. You might try
+setting it with a volatile @code{asm}, like this PowerPC example:
-@example
-*(volatile int *)addr = foo;
-asm volatile ("eieio" : : );
-@end example
+@smallexample
+ asm volatile("mtfsf 255,%0" : : "f" (fpenv));
+ sum = x + y;
+@end smallexample
@noindent
-Assume @code{addr} contains the address of a memory mapped device
-register. The PowerPC @code{eieio} instruction (Enforce In-order
-Execution of I/O) tells the CPU to make sure that the store to that
-device register happens before it issues any other I/O@.
-
-Note that even a volatile @code{asm} instruction can be moved in ways
-that appear insignificant to the compiler, such as across jump
-instructions. You can't expect a sequence of volatile @code{asm}
-instructions to remain perfectly consecutive. If you want consecutive
-output, use a single @code{asm}. Also, GCC will perform some
-optimizations across a volatile @code{asm} instruction; GCC does not
-``forget everything'' when it encounters a volatile @code{asm}
-instruction the way some other compilers do.
-
-An @code{asm} instruction without any operands or clobbers (an ``old
-style'' @code{asm}) will be treated identically to a volatile
-@code{asm} instruction.
+This will not work reliably, as the compiler may move the addition back
+before the volatile @code{asm}. To make it work you need to add an
+artificial dependency to the @code{asm} referencing a variable in the code
+you don't want moved, for example:
+
+@smallexample
+ asm volatile ("mtfsf 255,%1" : "=X"(sum): "f"(fpenv));
+ sum = x + y;
+@end smallexample
+
+Similarly, you can't expect a
+sequence of volatile @code{asm} instructions to remain perfectly
+consecutive. If you want consecutive output, use a single @code{asm}.
+Also, GCC will perform some optimizations across a volatile @code{asm}
+instruction; GCC does not ``forget everything'' when it encounters
+a volatile @code{asm} instruction the way some other compilers do.
+
+An @code{asm} instruction without any output operands will be treated
+identically to a volatile @code{asm} instruction.
It is a natural idea to look for a way to give access to the condition
code left by the assembler instruction. However, when we attempted to
It is possible that if an input dies in an insn, reload might
use the input reg for an output reload. Consider this example:
-@example
+@smallexample
asm ("foo" : "=t" (a) : "f" (b));
-@end example
+@end smallexample
This asm says that input B is not popped by the asm, and that
the asm pushes a result onto the reg-stack, i.e., the stack is one
The asm above would be written as
-@example
+@smallexample
asm ("foo" : "=&t" (a) : "f" (b));
-@end example
+@end smallexample
@item
Some operands need to be in particular places on the stack. All
Here are a couple of reasonable asms to want to write. This asm
takes one input, which is internally popped, and produces two outputs.
-@example
+@smallexample
asm ("fsincos" : "=t" (cos), "=u" (sin) : "0" (inp));
-@end example
+@end smallexample
This asm takes two inputs, which are popped by the @code{fyl2xp1} opcode,
and replaces them with one output. The user must code the @code{st(1)}
clobber for reg-stack.c to know that @code{fyl2xp1} pops both inputs.
-@example
+@smallexample
asm ("fyl2xp1" : "=t" (result) : "0" (x), "u" (y) : "st(1)");
-@end example
+@end smallexample
@include md.texi
function or variable by writing the @code{asm} (or @code{__asm__})
keyword after the declarator as follows:
-@example
+@smallexample
int foo asm ("myfoo") = 2;
-@end example
+@end smallexample
@noindent
This specifies that the name to be used for the variable @code{foo} in
you can get the same effect by writing a declaration for the function
before its definition and putting @code{asm} there, like this:
-@example
+@smallexample
extern func () asm ("FUNC");
func (x, y)
int x, y;
/* @r{@dots{}} */
-@end example
+@end smallexample
It is up to you to make sure that the assembler names you choose do not
conflict with any other assembler symbols. Also, you must not use a
@item
Local register variables in specific registers do not reserve the
-registers. The compiler's data flow analysis is capable of determining
+registers, except at the point where they are used as input or output
+operands in an @code{asm} statement and the @code{asm} statement itself is
+not deleted. The compiler's data flow analysis is capable of determining
where the specified registers contain live values, and where they are
available for other uses. Stores into local register variables may be deleted
when they appear to be dead according to dataflow analysis. References
You can define a global register variable in GNU C like this:
-@example
+@smallexample
register int *foo asm ("a5");
-@end example
+@end smallexample
@noindent
Here @code{a5} is the name of the register which should be used. Choose a
You can define a local register variable with a specified register
like this:
-@example
+@smallexample
register int *foo asm ("a5");
-@end example
+@end smallexample
@noindent
Here @code{a5} is the name of the register which should be used. Note
Defining such a register variable does not reserve the register; it
remains available for other uses in places where flow control determines
-the variable's value is not live. However, these registers are made
-unavailable for use in the reload pass; excessive use of this feature
-leaves the compiler too few available registers to compile certain
-functions.
+the variable's value is not live.
This option does not guarantee that GCC will generate code that has
this variable in the register you specify at all times. You may not
-code an explicit reference to this register in an @code{asm} statement
-and assume it will always refer to this variable.
+code an explicit reference to this register in the @emph{assembler
+instruction template} part of an @code{asm} statement and assume it will
+always refer to this variable. However, using the variable as an
+@code{asm} @emph{operand} guarantees that the specified register is used
+for the operand.
Stores into local register variables may be deleted when they appear to be dead
according to dataflow analysis. References to local register variables may
be deleted or moved or simplified.
+As for global register variables, it's recommended that you choose a
+register which is normally saved and restored by function calls on
+your machine, so that library routines will not clobber it. A common
+pitfall is to initialize multiple call-clobbered registers with
+arbitrary expressions, where a function call or library call for an
+arithmetic operator will overwrite a register value from a previous
+assignment, for example @code{r0} below:
+@smallexample
+register int *p1 asm ("r0") = @dots{};
+register int *p2 asm ("r1") = @dots{};
+@end smallexample
+In those cases, a solution is to use a temporary variable for
+each arbitrary expression. @xref{Example of asm with clobbered asm reg}.
+
@node Alternate Keywords
@section Alternate Keywords
@cindex alternate keywords
compile with another compiler, you can define the alternate keywords as
macros to replace them with the customary keywords. It looks like this:
-@example
+@smallexample
#ifndef __GNUC__
#define __asm__ asm
#endif
-@end example
+@end smallexample
@findex __extension__
@opindex pedantic
one of its callers. The @var{level} argument is number of frames to
scan up the call stack. A value of @code{0} yields the return address
of the current function, a value of @code{1} yields the return address
-of the caller of the current function, and so forth. When inlining
+of the caller of the current function, and so forth. When inlining
the expected behavior is that the function will return the address of
the function that will be returned to. To work around this behavior use
the @code{noinline} function attribute.
On some machines it may be impossible to determine the return address of
any function other than the current one; in such cases, or when the top
of the stack has been reached, this function will return @code{0} or a
-random value. In addition, @code{__builtin_frame_address} may be used
+random value. In addition, @code{__builtin_frame_address} may be used
to determine if the top of the stack has been reached.
This function should only be used with a nonzero argument for debugging
The first step in using these extensions is to provide the necessary data
types. This should be done using an appropriate @code{typedef}:
-@example
-typedef int v4si __attribute__ ((mode(V4SI)));
-@end example
+@smallexample
+typedef int v4si __attribute__ ((vector_size (16)));
+@end smallexample
+
+The @code{int} type specifies the base type, while the attribute specifies
+the vector size for the variable, measured in bytes. For example, the
+declaration above causes the compiler to set the mode for the @code{v4si}
+type to be 16 bytes wide and divided into @code{int} sized units. For
+a 32-bit @code{int} this means a vector of 4 units of 4 bytes, and the
+corresponding mode of @code{foo} will be @acronym{V4SI}.
-The base type @code{int} is effectively ignored by the compiler, the
-actual properties of the new type @code{v4si} are defined by the
-@code{__attribute__}. It defines the machine mode to be used; for vector
-types these have the form @code{V@var{n}@var{B}}; @var{n} should be the
-number of elements in the vector, and @var{B} should be the base mode of the
-individual elements. The following can be used as base modes:
+The @code{vector_size} attribute is only applicable to integral and
+float scalars, although arrays, pointers, and function return values
+are allowed in conjunction with this construct.
-@table @code
-@item QI
-An integer that is as wide as the smallest addressable unit, usually 8 bits.
-@item HI
-An integer, twice as wide as a QI mode integer, usually 16 bits.
-@item SI
-An integer, four times as wide as a QI mode integer, usually 32 bits.
-@item DI
-An integer, eight times as wide as a QI mode integer, usually 64 bits.
-@item SF
-A floating point value, as wide as a SI mode integer, usually 32 bits.
-@item DF
-A floating point value, as wide as a DI mode integer, usually 64 bits.
-@end table
+All the basic integer types can be used as base types, both as signed
+and as unsigned: @code{char}, @code{short}, @code{int}, @code{long},
+@code{long long}. In addition, @code{float} and @code{double} can be
+used to build floating-point vector types.
Specifying a combination that is not valid for the current architecture
-will cause gcc to synthesize the instructions using a narrower mode.
+will cause GCC to synthesize the instructions using a narrower mode.
For example, if you specify a variable of type @code{V4SI} and your
-architecture does not allow for this specific SIMD type, gcc will
+architecture does not allow for this specific SIMD type, GCC will
produce code that uses 4 @code{SIs}.
The types defined in this manner can be used with a subset of normal C
-operations. Currently, gcc will allow using the following operators on
-these types: @code{+, -, *, /, unary minus}@.
+operations. Currently, GCC will allow using the following operators
+on these types: @code{+, -, *, /, unary minus, ^, |, &, ~}@.
The operations behave like C++ @code{valarrays}. Addition is defined as
the addition of the corresponding elements of the operands. For
added to the corresponding 4 elements in @var{b} and the resulting
vector will be stored in @var{c}.
-@example
-typedef int v4si __attribute__ ((mode(V4SI)));
+@smallexample
+typedef int v4si __attribute__ ((vector_size (16)));
v4si a, b, c;
c = a + b;
-@end example
+@end smallexample
-Subtraction, multiplication, and division operate in a similar manner.
-Likewise, the result of using the unary minus operator on a vector type
-is a vector whose elements are the negative value of the corresponding
+Subtraction, multiplication, division, and the logical operations
+operate in a similar manner. Likewise, the result of using the unary
+minus or complement operators on a vector type is a vector whose
+elements are the negative or complemented values of the corresponding
elements in the operand.
You can declare variables and use them in function calls and returns, as
example, a function to add two vectors and multiply the result by a
third could look like this:
-@example
+@smallexample
v4si f (v4si a, v4si b, v4si c)
@{
v4si tmp = __builtin_addv4si (a, b);
return __builtin_mulv4si (tmp, c);
@}
-@end example
+@end smallexample
+
+@node Offsetof
+@section Offsetof
+@findex __builtin_offsetof
+
+GCC implements for both C and C++ a syntactic extension to implement
+the @code{offsetof} macro.
+
+@smallexample
+primary:
+ "__builtin_offsetof" "(" @code{typename} "," offsetof_member_designator ")"
+
+offsetof_member_designator:
+ @code{identifier}
+ | offsetof_member_designator "." @code{identifier}
+ | offsetof_member_designator "[" @code{expr} "]"
+@end smallexample
+
+This extension is sufficient such that
+
+@smallexample
+#define offsetof(@var{type}, @var{member}) __builtin_offsetof (@var{type}, @var{member})
+@end smallexample
+
+is a suitable definition of the @code{offsetof} macro. In C++, @var{type}
+may be dependent. In either case, @var{member} may consist of a single
+identifier, or a sequence of member accesses and array references.
@node Other Builtins
@section Other built-in functions provided by GCC
@findex ilogbl
@findex imaxabs
@findex index
+@findex isalnum
+@findex isalpha
+@findex isascii
+@findex isblank
+@findex iscntrl
+@findex isdigit
+@findex isgraph
+@findex islower
+@findex isprint
+@findex ispunct
+@findex isspace
+@findex isupper
+@findex iswalnum
+@findex iswalpha
+@findex iswblank
+@findex iswcntrl
+@findex iswdigit
+@findex iswgraph
+@findex iswlower
+@findex iswprint
+@findex iswpunct
+@findex iswspace
+@findex iswupper
+@findex iswxdigit
+@findex isxdigit
@findex j0
@findex j0f
@findex j0l
@findex scalbn
@findex scalbnf
@findex scanfnl
+@findex signbit
+@findex signbitf
+@findex signbitl
@findex significand
@findex significandf
@findex significandl
@findex tgamma
@findex tgammaf
@findex tgammal
+@findex toascii
+@findex tolower
+@findex toupper
+@findex towlower
+@findex towupper
@findex trunc
@findex truncf
@findex truncl
GCC includes built-in versions of many of the functions in the standard
C library. The versions prefixed with @code{__builtin_} will always be
treated as having the same meaning as the C library function even if you
-specify the @option{-fno-builtin} option. (@pxref{C Dialect Options})
+specify the @option{-fno-builtin} option. (@pxref{C Dialect Options})
Many of these functions are only optimized in certain cases; if they are
not optimized in a particular case, a call to the library function will
be emitted.
@code{drem}, @code{exp10f}, @code{exp10l}, @code{exp10}, @code{ffsll},
@code{ffsl}, @code{ffs}, @code{fprintf_unlocked}, @code{fputs_unlocked},
@code{gammaf}, @code{gammal}, @code{gamma}, @code{gettext},
-@code{index}, @code{j0f}, @code{j0l}, @code{j0}, @code{j1f}, @code{j1l},
-@code{j1}, @code{jnf}, @code{jnl}, @code{jn}, @code{mempcpy},
-@code{pow10f}, @code{pow10l}, @code{pow10}, @code{printf_unlocked},
-@code{rindex}, @code{scalbf}, @code{scalbl}, @code{scalb},
+@code{index}, @code{isascii}, @code{j0f}, @code{j0l}, @code{j0},
+@code{j1f}, @code{j1l}, @code{j1}, @code{jnf}, @code{jnl}, @code{jn},
+@code{mempcpy}, @code{pow10f}, @code{pow10l}, @code{pow10},
+@code{printf_unlocked}, @code{rindex}, @code{scalbf}, @code{scalbl},
+@code{scalb}, @code{signbit}, @code{signbitf}, @code{signbitl},
@code{significandf}, @code{significandl}, @code{significand},
@code{sincosf}, @code{sincosl}, @code{sincos}, @code{stpcpy},
-@code{strdup}, @code{strfmon}, @code{y0f}, @code{y0l}, @code{y0},
-@code{y1f}, @code{y1l}, @code{y1}, @code{ynf}, @code{ynl} and @code{yn}
+@code{strdup}, @code{strfmon}, @code{toascii}, @code{y0f}, @code{y0l},
+@code{y0}, @code{y1f}, @code{y1l}, @code{y1}, @code{ynf}, @code{ynl} and
+@code{yn}
may be handled as built-in functions.
All these functions have corresponding versions
prefixed with @code{__builtin_}, which may be used even in strict C89
@code{catanl}, @code{catan}, @code{cbrtf}, @code{cbrtl}, @code{cbrt},
@code{ccosf}, @code{ccoshf}, @code{ccoshl}, @code{ccosh}, @code{ccosl},
@code{ccos}, @code{cexpf}, @code{cexpl}, @code{cexp}, @code{cimagf},
-@code{cimagl}, @code{cimag},
-@code{conjf}, @code{conjl}, @code{conj}, @code{copysignf},
-@code{copysignl}, @code{copysign}, @code{cpowf}, @code{cpowl},
-@code{cpow}, @code{cprojf}, @code{cprojl}, @code{cproj}, @code{crealf},
-@code{creall}, @code{creal}, @code{csinf}, @code{csinhf}, @code{csinhl},
-@code{csinh}, @code{csinl}, @code{csin}, @code{csqrtf}, @code{csqrtl},
-@code{csqrt}, @code{ctanf}, @code{ctanhf}, @code{ctanhl}, @code{ctanh},
-@code{ctanl}, @code{ctan}, @code{erfcf}, @code{erfcl}, @code{erfc},
-@code{erff}, @code{erfl}, @code{erf}, @code{exp2f}, @code{exp2l},
-@code{exp2}, @code{expm1f}, @code{expm1l}, @code{expm1}, @code{fdimf},
-@code{fdiml}, @code{fdim}, @code{fmaf}, @code{fmal}, @code{fmaxf},
-@code{fmaxl}, @code{fmax}, @code{fma}, @code{fminf}, @code{fminl},
-@code{fmin}, @code{hypotf}, @code{hypotl}, @code{hypot}, @code{ilogbf},
-@code{ilogbl}, @code{ilogb}, @code{imaxabs}, @code{lgammaf},
-@code{lgammal}, @code{lgamma}, @code{llabs}, @code{llrintf},
-@code{llrintl}, @code{llrint}, @code{llroundf}, @code{llroundl},
-@code{llround}, @code{log1pf}, @code{log1pl}, @code{log1p},
-@code{log2f}, @code{log2l}, @code{log2}, @code{logbf}, @code{logbl},
-@code{logb}, @code{lrintf}, @code{lrintl}, @code{lrint}, @code{lroundf},
-@code{lroundl}, @code{lround}, @code{nearbyintf}, @code{nearbyintl},
-@code{nearbyint}, @code{nextafterf}, @code{nextafterl},
-@code{nextafter}, @code{nexttowardf}, @code{nexttowardl},
-@code{nexttoward}, @code{remainderf}, @code{remainderl},
-@code{remainder}, @code{remquof}, @code{remquol}, @code{remquo},
-@code{rintf}, @code{rintl}, @code{rint}, @code{roundf}, @code{roundl},
-@code{round}, @code{scalblnf}, @code{scalblnl}, @code{scalbln},
-@code{scalbnf}, @code{scalbnl}, @code{scalbn}, @code{snprintf},
-@code{tgammaf}, @code{tgammal}, @code{tgamma}, @code{truncf},
-@code{truncl}, @code{trunc}, @code{vfscanf}, @code{vscanf},
-@code{vsnprintf} and @code{vsscanf}
+@code{cimagl}, @code{cimag}, @code{conjf}, @code{conjl}, @code{conj},
+@code{copysignf}, @code{copysignl}, @code{copysign}, @code{cpowf},
+@code{cpowl}, @code{cpow}, @code{cprojf}, @code{cprojl}, @code{cproj},
+@code{crealf}, @code{creall}, @code{creal}, @code{csinf}, @code{csinhf},
+@code{csinhl}, @code{csinh}, @code{csinl}, @code{csin}, @code{csqrtf},
+@code{csqrtl}, @code{csqrt}, @code{ctanf}, @code{ctanhf}, @code{ctanhl},
+@code{ctanh}, @code{ctanl}, @code{ctan}, @code{erfcf}, @code{erfcl},
+@code{erfc}, @code{erff}, @code{erfl}, @code{erf}, @code{exp2f},
+@code{exp2l}, @code{exp2}, @code{expm1f}, @code{expm1l}, @code{expm1},
+@code{fdimf}, @code{fdiml}, @code{fdim}, @code{fmaf}, @code{fmal},
+@code{fmaxf}, @code{fmaxl}, @code{fmax}, @code{fma}, @code{fminf},
+@code{fminl}, @code{fmin}, @code{hypotf}, @code{hypotl}, @code{hypot},
+@code{ilogbf}, @code{ilogbl}, @code{ilogb}, @code{imaxabs},
+@code{isblank}, @code{iswblank}, @code{lgammaf}, @code{lgammal},
+@code{lgamma}, @code{llabs}, @code{llrintf}, @code{llrintl},
+@code{llrint}, @code{llroundf}, @code{llroundl}, @code{llround},
+@code{log1pf}, @code{log1pl}, @code{log1p}, @code{log2f}, @code{log2l},
+@code{log2}, @code{logbf}, @code{logbl}, @code{logb}, @code{lrintf},
+@code{lrintl}, @code{lrint}, @code{lroundf}, @code{lroundl},
+@code{lround}, @code{nearbyintf}, @code{nearbyintl}, @code{nearbyint},
+@code{nextafterf}, @code{nextafterl}, @code{nextafter},
+@code{nexttowardf}, @code{nexttowardl}, @code{nexttoward},
+@code{remainderf}, @code{remainderl}, @code{remainder}, @code{remquof},
+@code{remquol}, @code{remquo}, @code{rintf}, @code{rintl}, @code{rint},
+@code{roundf}, @code{roundl}, @code{round}, @code{scalblnf},
+@code{scalblnl}, @code{scalbln}, @code{scalbnf}, @code{scalbnl},
+@code{scalbn}, @code{snprintf}, @code{tgammaf}, @code{tgammal},
+@code{tgamma}, @code{truncf}, @code{truncl}, @code{trunc},
+@code{vfscanf}, @code{vscanf}, @code{vsnprintf} and @code{vsscanf}
are handled as built-in functions
except in strict ISO C90 mode (@option{-ansi} or @option{-std=c89}).
the purpose to which ISO C99 puts them. All these functions have
corresponding versions prefixed with @code{__builtin_}.
+The ISO C94 functions
+@code{iswalnum}, @code{iswalpha}, @code{iswcntrl}, @code{iswdigit},
+@code{iswgraph}, @code{iswlower}, @code{iswprint}, @code{iswpunct},
+@code{iswspace}, @code{iswupper}, @code{iswxdigit}, @code{towlower} and
+@code{towupper}
+are handled as built-in functions
+except in strict ISO C90 mode (@option{-ansi} or @option{-std=c89}).
+
The ISO C90 functions
@code{abort}, @code{abs}, @code{acos}, @code{asin}, @code{atan2},
@code{atan}, @code{calloc}, @code{ceil}, @code{cosh}, @code{cos},
@code{exit}, @code{exp}, @code{fabs}, @code{floor}, @code{fmod},
-@code{fprintf}, @code{fputs}, @code{frexp}, @code{fscanf}, @code{labs},
-@code{ldexp}, @code{log10}, @code{log}, @code{malloc}, @code{memcmp},
-@code{memcpy}, @code{memset}, @code{modf}, @code{pow}, @code{printf},
-@code{putchar}, @code{puts}, @code{scanf}, @code{sinh}, @code{sin},
-@code{snprintf}, @code{sprintf}, @code{sqrt}, @code{sscanf},
-@code{strcat}, @code{strchr}, @code{strcmp}, @code{strcpy},
-@code{strcspn}, @code{strlen}, @code{strncat}, @code{strncmp},
-@code{strncpy}, @code{strpbrk}, @code{strrchr}, @code{strspn},
-@code{strstr}, @code{tanh}, @code{tan}, @code{vfprintf}, @code{vprintf}
-and @code{vsprintf}
+@code{fprintf}, @code{fputs}, @code{frexp}, @code{fscanf},
+@code{isalnum}, @code{isalpha}, @code{iscntrl}, @code{isdigit},
+@code{isgraph}, @code{islower}, @code{isprint}, @code{ispunct},
+@code{isspace}, @code{isupper}, @code{isxdigit}, @code{tolower},
+@code{toupper}, @code{labs}, @code{ldexp}, @code{log10}, @code{log},
+@code{malloc}, @code{memcmp}, @code{memcpy}, @code{memset}, @code{modf},
+@code{pow}, @code{printf}, @code{putchar}, @code{puts}, @code{scanf},
+@code{sinh}, @code{sin}, @code{snprintf}, @code{sprintf}, @code{sqrt},
+@code{sscanf}, @code{strcat}, @code{strchr}, @code{strcmp},
+@code{strcpy}, @code{strcspn}, @code{strlen}, @code{strncat},
+@code{strncmp}, @code{strncpy}, @code{strpbrk}, @code{strrchr},
+@code{strspn}, @code{strstr}, @code{tanh}, @code{tan}, @code{vfprintf},
+@code{vprintf} and @code{vsprintf}
are all recognized as built-in functions unless
@option{-fno-builtin} is specified (or @option{-fno-builtin-@var{function}}
is specified for an individual function). All of these functions have
@code{short **}. Furthermore, two types that are typedefed are
considered compatible if their underlying types are compatible.
-An @code{enum} type is considered to be compatible with another
-@code{enum} type. For example, @code{enum @{foo, bar@}} is similar to
+An @code{enum} type is not considered to be compatible with another
+@code{enum} type even if both are compatible with the same integer
+type; this is what the C standard specifies.
+For example, @code{enum @{foo, bar@}} is not similar to
@code{enum @{hot, dog@}}.
You would typically use this function in code whose execution varies
@})
@end smallexample
-@emph{Note:} This construct is only available for C.
+@emph{Note:} This construct is only available for C@.
@end deftypefn
(void)0))
@end smallexample
-@emph{Note:} This construct is only available for C. Furthermore, the
+@emph{Note:} This construct is only available for C@. Furthermore, the
unused expression (@var{exp1} or @var{exp2} depending on the value of
@var{const_exp}) may still generate syntax errors. This may change in
future revisions.
is parsed as by @code{strtol}; that is, the base is recognized by
leading @samp{0} or @samp{0x} prefixes. The number parsed is placed
in the significand such that the least significant bit of the number
-is at the least significant bit of the significand. The number is
+is at the least significant bit of the significand. The number is
truncated to fit the significand field provided. The significand is
-forced to be a quiet NaN.
+forced to be a quiet NaN@.
This function, if given a string literal, is evaluated early enough
that it is considered a compile-time constant.
@end deftypefn
@deftypefn {Built-in Function} double __builtin_nans (const char *str)
-Similar to @code{__builtin_nan}, except the significand is forced
-to be a signaling NaN. The @code{nans} function is proposed by
-@uref{http://std.dkuug.dk/JTC1/SC22/WG14/www/docs/n965.htm,,WG14 N965}.
+Similar to @code{__builtin_nan}, except the significand is forced
+to be a signaling NaN@. The @code{nans} function is proposed by
+@uref{http://www.open-std.org/jtc1/sc22/wg14/www/docs/n965.htm,,WG14 N965}.
@end deftypefn
@deftypefn {Built-in Function} float __builtin_nansf (const char *str)
@end deftypefn
@deftypefn {Built-in Function} int __builtin_parity (unsigned int x)
-Returns the parity of @var{x}, i.@:e. the number of 1-bits in @var{x}
+Returns the parity of @var{x}, i.e.@: the number of 1-bits in @var{x}
modulo 2.
@end deftypefn
@menu
* Alpha Built-in Functions::
* ARM Built-in Functions::
+* FR-V Built-in Functions::
* X86 Built-in Functions::
+* MIPS Paired-Single Support::
* PowerPC AltiVec Built-in Functions::
+* SPARC VIS Built-in Functions::
@end menu
@node Alpha Built-in Functions
The following built-in functions are always available. They
all generate the machine instruction that is part of the name.
-@example
+@smallexample
long __builtin_alpha_implver (void)
long __builtin_alpha_rpcc (void)
long __builtin_alpha_amask (long)
long __builtin_alpha_umulh (long, long)
long __builtin_alpha_zap (long, long)
long __builtin_alpha_zapnot (long, long)
-@end example
+@end smallexample
The following built-in functions are always with @option{-mmax}
or @option{-mcpu=@var{cpu}} where @var{cpu} is @code{pca56} or
later. They all generate the machine instruction that is part
of the name.
-@example
+@smallexample
long __builtin_alpha_pklb (long)
long __builtin_alpha_pkwb (long)
long __builtin_alpha_unpkbl (long)
long __builtin_alpha_maxuw4 (long, long)
long __builtin_alpha_maxsw4 (long, long)
long __builtin_alpha_perr (long, long)
-@end example
+@end smallexample
The following built-in functions are always with @option{-mcix}
or @option{-mcpu=@var{cpu}} where @var{cpu} is @code{ev67} or
later. They all generate the machine instruction that is part
of the name.
-@example
+@smallexample
long __builtin_alpha_cttz (long)
long __builtin_alpha_ctlz (long)
long __builtin_alpha_ctpop (long)
-@end example
+@end smallexample
The following builtins are available on systems that use the OSF/1
PALcode. Normally they invoke the @code{rduniq} and @code{wruniq}
PAL calls, but when invoked with @option{-mtls-kernel}, they invoke
@code{rdval} and @code{wrval}.
-@example
+@smallexample
void *__builtin_thread_pointer (void)
void __builtin_set_thread_pointer (void *)
-@end example
+@end smallexample
@node ARM Built-in Functions
@subsection ARM Built-in Functions
These built-in functions are available for the ARM family of
processors, when the @option{-mcpu=iwmmxt} switch is used:
-@example
-typedef int __v2si __attribute__ ((__mode__ (__V2SI__)))
-
-v2si __builtin_arm_waddw (v2si, v2si)
-v2si __builtin_arm_waddw (v2si, v2si)
-v2si __builtin_arm_wsubw (v2si, v2si)
-v2si __builtin_arm_wsubw (v2si, v2si)
-v2si __builtin_arm_waddwss (v2si, v2si)
-v2si __builtin_arm_wsubwss (v2si, v2si)
-v2si __builtin_arm_wsubwss (v2si, v2si)
-v2si __builtin_arm_wsubwss (v2si, v2si)
-v2si __builtin_arm_wsubwss (v2si, v2si)
-v2si __builtin_arm_waddwus (v2si, v2si)
-v2si __builtin_arm_wsubwus (v2si, v2si)
-v2si __builtin_arm_wsubwus (v2si, v2si)
-v2si __builtin_arm_wmaxuw (v2si, v2si)
-v2si __builtin_arm_wmaxsw (v2si, v2si)
-v2si __builtin_arm_wavg2br (v2si, v2si)
-v2si __builtin_arm_wavg2hr (v2si, v2si)
-v2si __builtin_arm_wavg2b (v2si, v2si)
-v2si __builtin_arm_wavg2h (v2si, v2si)
-v2si __builtin_arm_waccb (v2si)
-v2si __builtin_arm_wacch (v2si)
-v2si __builtin_arm_waccw (v2si)
-v2si __builtin_arm_wmacs (v2si, v2si, v2si)
-v2si __builtin_arm_wmacsz (v2si, v2si, v2si)
-v2si __builtin_arm_wmacu (v2si, v2si, v2si)
-v2si __builtin_arm_wmacuz (v2si, v2si)
-v2si __builtin_arm_wsadb (v2si, v2si)
-v2si __builtin_arm_wsadbz (v2si, v2si)
-v2si __builtin_arm_wsadh (v2si, v2si)
-v2si __builtin_arm_wsadhz (v2si, v2si)
-v2si __builtin_arm_walign (v2si, v2si)
-v2si __builtin_arm_tmia (v2si, int, int)
-v2si __builtin_arm_tmiaph (v2si, int, int)
-v2si __builtin_arm_tmiabb (v2si, int, int)
-v2si __builtin_arm_tmiabt (v2si, int, int)
-v2si __builtin_arm_tmiatb (v2si, int, int)
-v2si __builtin_arm_tmiatt (v2si, int, int)
-int __builtin_arm_tmovmskb (v2si)
-int __builtin_arm_tmovmskh (v2si)
-int __builtin_arm_tmovmskw (v2si)
-v2si __builtin_arm_wmadds (v2si, v2si)
-v2si __builtin_arm_wmaddu (v2si, v2si)
-v2si __builtin_arm_wpackhss (v2si, v2si)
-v2si __builtin_arm_wpackwss (v2si, v2si)
-v2si __builtin_arm_wpackdss (v2si, v2si)
-v2si __builtin_arm_wpackhus (v2si, v2si)
-v2si __builtin_arm_wpackwus (v2si, v2si)
-v2si __builtin_arm_wpackdus (v2si, v2si)
-v2si __builtin_arm_waddb (v2si, v2si)
-v2si __builtin_arm_waddh (v2si, v2si)
+@smallexample
+typedef int v2si __attribute__ ((vector_size (8)));
+typedef short v4hi __attribute__ ((vector_size (8)));
+typedef char v8qi __attribute__ ((vector_size (8)));
+
+int __builtin_arm_getwcx (int)
+void __builtin_arm_setwcx (int, int)
+int __builtin_arm_textrmsb (v8qi, int)
+int __builtin_arm_textrmsh (v4hi, int)
+int __builtin_arm_textrmsw (v2si, int)
+int __builtin_arm_textrmub (v8qi, int)
+int __builtin_arm_textrmuh (v4hi, int)
+int __builtin_arm_textrmuw (v2si, int)
+v8qi __builtin_arm_tinsrb (v8qi, int)
+v4hi __builtin_arm_tinsrh (v4hi, int)
+v2si __builtin_arm_tinsrw (v2si, int)
+long long __builtin_arm_tmia (long long, int, int)
+long long __builtin_arm_tmiabb (long long, int, int)
+long long __builtin_arm_tmiabt (long long, int, int)
+long long __builtin_arm_tmiaph (long long, int, int)
+long long __builtin_arm_tmiatb (long long, int, int)
+long long __builtin_arm_tmiatt (long long, int, int)
+int __builtin_arm_tmovmskb (v8qi)
+int __builtin_arm_tmovmskh (v4hi)
+int __builtin_arm_tmovmskw (v2si)
+long long __builtin_arm_waccb (v8qi)
+long long __builtin_arm_wacch (v4hi)
+long long __builtin_arm_waccw (v2si)
+v8qi __builtin_arm_waddb (v8qi, v8qi)
+v8qi __builtin_arm_waddbss (v8qi, v8qi)
+v8qi __builtin_arm_waddbus (v8qi, v8qi)
+v4hi __builtin_arm_waddh (v4hi, v4hi)
+v4hi __builtin_arm_waddhss (v4hi, v4hi)
+v4hi __builtin_arm_waddhus (v4hi, v4hi)
v2si __builtin_arm_waddw (v2si, v2si)
-v2si __builtin_arm_waddbss (v2si, v2si)
-v2si __builtin_arm_waddhss (v2si, v2si)
v2si __builtin_arm_waddwss (v2si, v2si)
-v2si __builtin_arm_waddbus (v2si, v2si)
-v2si __builtin_arm_waddhus (v2si, v2si)
v2si __builtin_arm_waddwus (v2si, v2si)
-v2si __builtin_arm_wsubb (v2si, v2si)
-v2si __builtin_arm_wsubh (v2si, v2si)
-v2si __builtin_arm_wsubw (v2si, v2si)
-v2si __builtin_arm_wsubbss (v2si, v2si)
-v2si __builtin_arm_wsubhss (v2si, v2si)
-v2si __builtin_arm_wsubwss (v2si, v2si)
-v2si __builtin_arm_wsubbus (v2si, v2si)
-v2si __builtin_arm_wsubhus (v2si, v2si)
-v2si __builtin_arm_wsubwus (v2si, v2si)
-v2si __builtin_arm_wand (v2si, v2si)
-v2si __builtin_arm_wandn (v2si, v2si)
-v2si __builtin_arm_wor (v2si, v2si)
-v2si __builtin_arm_wxor (v2si, v2si)
-v2si __builtin_arm_wcmpeqb (v2si, v2si)
-v2si __builtin_arm_wcmpeqh (v2si, v2si)
+v8qi __builtin_arm_walign (v8qi, v8qi, int)
+long long __builtin_arm_wand(long long, long long)
+long long __builtin_arm_wandn (long long, long long)
+v8qi __builtin_arm_wavg2b (v8qi, v8qi)
+v8qi __builtin_arm_wavg2br (v8qi, v8qi)
+v4hi __builtin_arm_wavg2h (v4hi, v4hi)
+v4hi __builtin_arm_wavg2hr (v4hi, v4hi)
+v8qi __builtin_arm_wcmpeqb (v8qi, v8qi)
+v4hi __builtin_arm_wcmpeqh (v4hi, v4hi)
v2si __builtin_arm_wcmpeqw (v2si, v2si)
-v2si __builtin_arm_wcmpgtub (v2si, v2si)
-v2si __builtin_arm_wcmpgtuh (v2si, v2si)
-v2si __builtin_arm_wcmpgtuw (v2si, v2si)
-v2si __builtin_arm_wcmpgtsb (v2si, v2si)
-v2si __builtin_arm_wcmpgtsh (v2si, v2si)
+v8qi __builtin_arm_wcmpgtsb (v8qi, v8qi)
+v4hi __builtin_arm_wcmpgtsh (v4hi, v4hi)
v2si __builtin_arm_wcmpgtsw (v2si, v2si)
-int __builtin_arm_textrmsb (v2si, int)
-int __builtin_arm_textrmsh (v2si, int)
-int __builtin_arm_textrmsw (v2si, int)
-int __builtin_arm_textrmub (v2si, int)
-int __builtin_arm_textrmuh (v2si, int)
-int __builtin_arm_textrmuw (v2si, int)
-v2si __builtin_arm_tinsrb (v2si, int, int)
-v2si __builtin_arm_tinsrh (v2si, int, int)
-v2si __builtin_arm_tinsrw (v2si, int, int)
+v8qi __builtin_arm_wcmpgtub (v8qi, v8qi)
+v4hi __builtin_arm_wcmpgtuh (v4hi, v4hi)
+v2si __builtin_arm_wcmpgtuw (v2si, v2si)
+long long __builtin_arm_wmacs (long long, v4hi, v4hi)
+long long __builtin_arm_wmacsz (v4hi, v4hi)
+long long __builtin_arm_wmacu (long long, v4hi, v4hi)
+long long __builtin_arm_wmacuz (v4hi, v4hi)
+v4hi __builtin_arm_wmadds (v4hi, v4hi)
+v4hi __builtin_arm_wmaddu (v4hi, v4hi)
+v8qi __builtin_arm_wmaxsb (v8qi, v8qi)
+v4hi __builtin_arm_wmaxsh (v4hi, v4hi)
v2si __builtin_arm_wmaxsw (v2si, v2si)
-v2si __builtin_arm_wmaxsh (v2si, v2si)
-v2si __builtin_arm_wmaxsb (v2si, v2si)
+v8qi __builtin_arm_wmaxub (v8qi, v8qi)
+v4hi __builtin_arm_wmaxuh (v4hi, v4hi)
v2si __builtin_arm_wmaxuw (v2si, v2si)
-v2si __builtin_arm_wmaxuh (v2si, v2si)
-v2si __builtin_arm_wmaxub (v2si, v2si)
+v8qi __builtin_arm_wminsb (v8qi, v8qi)
+v4hi __builtin_arm_wminsh (v4hi, v4hi)
v2si __builtin_arm_wminsw (v2si, v2si)
-v2si __builtin_arm_wminsh (v2si, v2si)
-v2si __builtin_arm_wminsb (v2si, v2si)
+v8qi __builtin_arm_wminub (v8qi, v8qi)
+v4hi __builtin_arm_wminuh (v4hi, v4hi)
v2si __builtin_arm_wminuw (v2si, v2si)
-v2si __builtin_arm_wminuh (v2si, v2si)
-v2si __builtin_arm_wminub (v2si, v2si)
-v2si __builtin_arm_wmuluh (v2si, v2si)
-v2si __builtin_arm_wmulsh (v2si, v2si)
-v2si __builtin_arm_wmulul (v2si, v2si)
-v2si __builtin_arm_wshufh (v2si, int)
-v2si __builtin_arm_wsllh (v2si, v2si)
-v2si __builtin_arm_wsllw (v2si, v2si)
-v2si __builtin_arm_wslld (v2si, v2si)
-v2si __builtin_arm_wsrah (v2si, v2si)
-v2si __builtin_arm_wsraw (v2si, v2si)
-v2si __builtin_arm_wsrad (v2si, v2si)
-v2si __builtin_arm_wsrlh (v2si, v2si)
-v2si __builtin_arm_wsrlw (v2si, v2si)
-v2si __builtin_arm_wsrld (v2si, v2si)
-v2si __builtin_arm_wrorh (v2si, v2si)
-v2si __builtin_arm_wrorw (v2si, v2si)
-v2si __builtin_arm_wrord (v2si, v2si)
-v2si __builtin_arm_wsllhi (v2si, int)
+v4hi __builtin_arm_wmulsm (v4hi, v4hi)
+v4hi __builtin_arm_wmulul (v4hi, v4hi)
+v4hi __builtin_arm_wmulum (v4hi, v4hi)
+long long __builtin_arm_wor (long long, long long)
+v2si __builtin_arm_wpackdss (long long, long long)
+v2si __builtin_arm_wpackdus (long long, long long)
+v8qi __builtin_arm_wpackhss (v4hi, v4hi)
+v8qi __builtin_arm_wpackhus (v4hi, v4hi)
+v4hi __builtin_arm_wpackwss (v2si, v2si)
+v4hi __builtin_arm_wpackwus (v2si, v2si)
+long long __builtin_arm_wrord (long long, long long)
+long long __builtin_arm_wrordi (long long, int)
+v4hi __builtin_arm_wrorh (v4hi, long long)
+v4hi __builtin_arm_wrorhi (v4hi, int)
+v2si __builtin_arm_wrorw (v2si, long long)
+v2si __builtin_arm_wrorwi (v2si, int)
+v2si __builtin_arm_wsadb (v8qi, v8qi)
+v2si __builtin_arm_wsadbz (v8qi, v8qi)
+v2si __builtin_arm_wsadh (v4hi, v4hi)
+v2si __builtin_arm_wsadhz (v4hi, v4hi)
+v4hi __builtin_arm_wshufh (v4hi, int)
+long long __builtin_arm_wslld (long long, long long)
+long long __builtin_arm_wslldi (long long, int)
+v4hi __builtin_arm_wsllh (v4hi, long long)
+v4hi __builtin_arm_wsllhi (v4hi, int)
+v2si __builtin_arm_wsllw (v2si, long long)
v2si __builtin_arm_wsllwi (v2si, int)
-v2si __builtin_arm_wslldi (v2si, v2si)
-v2si __builtin_arm_wsrahi (v2si, int)
+long long __builtin_arm_wsrad (long long, long long)
+long long __builtin_arm_wsradi (long long, int)
+v4hi __builtin_arm_wsrah (v4hi, long long)
+v4hi __builtin_arm_wsrahi (v4hi, int)
+v2si __builtin_arm_wsraw (v2si, long long)
v2si __builtin_arm_wsrawi (v2si, int)
-v2si __builtin_arm_wsradi (v2si, v2si)
+long long __builtin_arm_wsrld (long long, long long)
+long long __builtin_arm_wsrldi (long long, int)
+v4hi __builtin_arm_wsrlh (v4hi, long long)
+v4hi __builtin_arm_wsrlhi (v4hi, int)
+v2si __builtin_arm_wsrlw (v2si, long long)
v2si __builtin_arm_wsrlwi (v2si, int)
-v2si __builtin_arm_wsrldi (v2si, int)
-v2si __builtin_arm_wrorhi (v2si, int)
-v2si __builtin_arm_wrorwi (v2si, int)
-v2si __builtin_arm_wrordi (v2si, int)
-v2si __builtin_arm_wunpckihb (v2si, v2si)
-v2si __builtin_arm_wunpckihh (v2si, v2si)
+v8qi __builtin_arm_wsubb (v8qi, v8qi)
+v8qi __builtin_arm_wsubbss (v8qi, v8qi)
+v8qi __builtin_arm_wsubbus (v8qi, v8qi)
+v4hi __builtin_arm_wsubh (v4hi, v4hi)
+v4hi __builtin_arm_wsubhss (v4hi, v4hi)
+v4hi __builtin_arm_wsubhus (v4hi, v4hi)
+v2si __builtin_arm_wsubw (v2si, v2si)
+v2si __builtin_arm_wsubwss (v2si, v2si)
+v2si __builtin_arm_wsubwus (v2si, v2si)
+v4hi __builtin_arm_wunpckehsb (v8qi)
+v2si __builtin_arm_wunpckehsh (v4hi)
+long long __builtin_arm_wunpckehsw (v2si)
+v4hi __builtin_arm_wunpckehub (v8qi)
+v2si __builtin_arm_wunpckehuh (v4hi)
+long long __builtin_arm_wunpckehuw (v2si)
+v4hi __builtin_arm_wunpckelsb (v8qi)
+v2si __builtin_arm_wunpckelsh (v4hi)
+long long __builtin_arm_wunpckelsw (v2si)
+v4hi __builtin_arm_wunpckelub (v8qi)
+v2si __builtin_arm_wunpckeluh (v4hi)
+long long __builtin_arm_wunpckeluw (v2si)
+v8qi __builtin_arm_wunpckihb (v8qi, v8qi)
+v4hi __builtin_arm_wunpckihh (v4hi, v4hi)
v2si __builtin_arm_wunpckihw (v2si, v2si)
-v2si __builtin_arm_wunpckilb (v2si, v2si)
-v2si __builtin_arm_wunpckilh (v2si, v2si)
+v8qi __builtin_arm_wunpckilb (v8qi, v8qi)
+v4hi __builtin_arm_wunpckilh (v4hi, v4hi)
v2si __builtin_arm_wunpckilw (v2si, v2si)
-v2si __builtin_arm_wunpckehsb (v2si)
-v2si __builtin_arm_wunpckehsh (v2si)
-v2si __builtin_arm_wunpckehsw (v2si)
-v2si __builtin_arm_wunpckehub (v2si)
-v2si __builtin_arm_wunpckehuh (v2si)
-v2si __builtin_arm_wunpckehuw (v2si)
-v2si __builtin_arm_wunpckelsb (v2si)
-v2si __builtin_arm_wunpckelsh (v2si)
-v2si __builtin_arm_wunpckelsw (v2si)
-v2si __builtin_arm_wunpckelub (v2si)
-v2si __builtin_arm_wunpckeluh (v2si)
-v2si __builtin_arm_wunpckeluw (v2si)
-v2si __builtin_arm_wsubwss (v2si, v2si)
-v2si __builtin_arm_wsraw (v2si, v2si)
-v2si __builtin_arm_wsrad (v2si, v2si)
-@end example
+long long __builtin_arm_wxor (long long, long long)
+long long __builtin_arm_wzero ()
+@end smallexample
+
+@node FR-V Built-in Functions
+@subsection FR-V Built-in Functions
+
+GCC provides many FR-V-specific built-in functions. In general,
+these functions are intended to be compatible with those described
+by @cite{FR-V Family, Softune C/C++ Compiler Manual (V6), Fujitsu
+Semiconductor}. The two exceptions are @code{__MDUNPACKH} and
+@code{__MBTOHE}, the gcc forms of which pass 128-bit values by
+pointer rather than by value.
+
+Most of the functions are named after specific FR-V instructions.
+Such functions are said to be ``directly mapped'' and are summarized
+here in tabular form.
+
+@menu
+* Argument Types::
+* Directly-mapped Integer Functions::
+* Directly-mapped Media Functions::
+* Other Built-in Functions::
+@end menu
+
+@node Argument Types
+@subsubsection Argument Types
+
+The arguments to the built-in functions can be divided into three groups:
+register numbers, compile-time constants and run-time values. In order
+to make this classification clear at a glance, the arguments and return
+values are given the following pseudo types:
+
+@multitable @columnfractions .20 .30 .15 .35
+@item Pseudo type @tab Real C type @tab Constant? @tab Description
+@item @code{uh} @tab @code{unsigned short} @tab No @tab an unsigned halfword
+@item @code{uw1} @tab @code{unsigned int} @tab No @tab an unsigned word
+@item @code{sw1} @tab @code{int} @tab No @tab a signed word
+@item @code{uw2} @tab @code{unsigned long long} @tab No
+@tab an unsigned doubleword
+@item @code{sw2} @tab @code{long long} @tab No @tab a signed doubleword
+@item @code{const} @tab @code{int} @tab Yes @tab an integer constant
+@item @code{acc} @tab @code{int} @tab Yes @tab an ACC register number
+@item @code{iacc} @tab @code{int} @tab Yes @tab an IACC register number
+@end multitable
+
+These pseudo types are not defined by GCC, they are simply a notational
+convenience used in this manual.
+
+Arguments of type @code{uh}, @code{uw1}, @code{sw1}, @code{uw2}
+and @code{sw2} are evaluated at run time. They correspond to
+register operands in the underlying FR-V instructions.
+
+@code{const} arguments represent immediate operands in the underlying
+FR-V instructions. They must be compile-time constants.
+
+@code{acc} arguments are evaluated at compile time and specify the number
+of an accumulator register. For example, an @code{acc} argument of 2
+will select the ACC2 register.
+
+@code{iacc} arguments are similar to @code{acc} arguments but specify the
+number of an IACC register. See @pxref{Other Built-in Functions}
+for more details.
+
+@node Directly-mapped Integer Functions
+@subsubsection Directly-mapped Integer Functions
+
+The functions listed below map directly to FR-V I-type instructions.
+
+@multitable @columnfractions .45 .32 .23
+@item Function prototype @tab Example usage @tab Assembly output
+@item @code{sw1 __ADDSS (sw1, sw1)}
+@tab @code{@var{c} = __ADDSS (@var{a}, @var{b})}
+@tab @code{ADDSS @var{a},@var{b},@var{c}}
+@item @code{sw1 __SCAN (sw1, sw1)}
+@tab @code{@var{c} = __SCAN (@var{a}, @var{b})}
+@tab @code{SCAN @var{a},@var{b},@var{c}}
+@item @code{sw1 __SCUTSS (sw1)}
+@tab @code{@var{b} = __SCUTSS (@var{a})}
+@tab @code{SCUTSS @var{a},@var{b}}
+@item @code{sw1 __SLASS (sw1, sw1)}
+@tab @code{@var{c} = __SLASS (@var{a}, @var{b})}
+@tab @code{SLASS @var{a},@var{b},@var{c}}
+@item @code{void __SMASS (sw1, sw1)}
+@tab @code{__SMASS (@var{a}, @var{b})}
+@tab @code{SMASS @var{a},@var{b}}
+@item @code{void __SMSSS (sw1, sw1)}
+@tab @code{__SMSSS (@var{a}, @var{b})}
+@tab @code{SMSSS @var{a},@var{b}}
+@item @code{void __SMU (sw1, sw1)}
+@tab @code{__SMU (@var{a}, @var{b})}
+@tab @code{SMU @var{a},@var{b}}
+@item @code{sw2 __SMUL (sw1, sw1)}
+@tab @code{@var{c} = __SMUL (@var{a}, @var{b})}
+@tab @code{SMUL @var{a},@var{b},@var{c}}
+@item @code{sw1 __SUBSS (sw1, sw1)}
+@tab @code{@var{c} = __SUBSS (@var{a}, @var{b})}
+@tab @code{SUBSS @var{a},@var{b},@var{c}}
+@item @code{uw2 __UMUL (uw1, uw1)}
+@tab @code{@var{c} = __UMUL (@var{a}, @var{b})}
+@tab @code{UMUL @var{a},@var{b},@var{c}}
+@end multitable
+
+@node Directly-mapped Media Functions
+@subsubsection Directly-mapped Media Functions
+
+The functions listed below map directly to FR-V M-type instructions.
+
+@multitable @columnfractions .45 .32 .23
+@item Function prototype @tab Example usage @tab Assembly output
+@item @code{uw1 __MABSHS (sw1)}
+@tab @code{@var{b} = __MABSHS (@var{a})}
+@tab @code{MABSHS @var{a},@var{b}}
+@item @code{void __MADDACCS (acc, acc)}
+@tab @code{__MADDACCS (@var{b}, @var{a})}
+@tab @code{MADDACCS @var{a},@var{b}}
+@item @code{sw1 __MADDHSS (sw1, sw1)}
+@tab @code{@var{c} = __MADDHSS (@var{a}, @var{b})}
+@tab @code{MADDHSS @var{a},@var{b},@var{c}}
+@item @code{uw1 __MADDHUS (uw1, uw1)}
+@tab @code{@var{c} = __MADDHUS (@var{a}, @var{b})}
+@tab @code{MADDHUS @var{a},@var{b},@var{c}}
+@item @code{uw1 __MAND (uw1, uw1)}
+@tab @code{@var{c} = __MAND (@var{a}, @var{b})}
+@tab @code{MAND @var{a},@var{b},@var{c}}
+@item @code{void __MASACCS (acc, acc)}
+@tab @code{__MASACCS (@var{b}, @var{a})}
+@tab @code{MASACCS @var{a},@var{b}}
+@item @code{uw1 __MAVEH (uw1, uw1)}
+@tab @code{@var{c} = __MAVEH (@var{a}, @var{b})}
+@tab @code{MAVEH @var{a},@var{b},@var{c}}
+@item @code{uw2 __MBTOH (uw1)}
+@tab @code{@var{b} = __MBTOH (@var{a})}
+@tab @code{MBTOH @var{a},@var{b}}
+@item @code{void __MBTOHE (uw1 *, uw1)}
+@tab @code{__MBTOHE (&@var{b}, @var{a})}
+@tab @code{MBTOHE @var{a},@var{b}}
+@item @code{void __MCLRACC (acc)}
+@tab @code{__MCLRACC (@var{a})}
+@tab @code{MCLRACC @var{a}}
+@item @code{void __MCLRACCA (void)}
+@tab @code{__MCLRACCA ()}
+@tab @code{MCLRACCA}
+@item @code{uw1 __Mcop1 (uw1, uw1)}
+@tab @code{@var{c} = __Mcop1 (@var{a}, @var{b})}
+@tab @code{Mcop1 @var{a},@var{b},@var{c}}
+@item @code{uw1 __Mcop2 (uw1, uw1)}
+@tab @code{@var{c} = __Mcop2 (@var{a}, @var{b})}
+@tab @code{Mcop2 @var{a},@var{b},@var{c}}
+@item @code{uw1 __MCPLHI (uw2, const)}
+@tab @code{@var{c} = __MCPLHI (@var{a}, @var{b})}
+@tab @code{MCPLHI @var{a},#@var{b},@var{c}}
+@item @code{uw1 __MCPLI (uw2, const)}
+@tab @code{@var{c} = __MCPLI (@var{a}, @var{b})}
+@tab @code{MCPLI @var{a},#@var{b},@var{c}}
+@item @code{void __MCPXIS (acc, sw1, sw1)}
+@tab @code{__MCPXIS (@var{c}, @var{a}, @var{b})}
+@tab @code{MCPXIS @var{a},@var{b},@var{c}}
+@item @code{void __MCPXIU (acc, uw1, uw1)}
+@tab @code{__MCPXIU (@var{c}, @var{a}, @var{b})}
+@tab @code{MCPXIU @var{a},@var{b},@var{c}}
+@item @code{void __MCPXRS (acc, sw1, sw1)}
+@tab @code{__MCPXRS (@var{c}, @var{a}, @var{b})}
+@tab @code{MCPXRS @var{a},@var{b},@var{c}}
+@item @code{void __MCPXRU (acc, uw1, uw1)}
+@tab @code{__MCPXRU (@var{c}, @var{a}, @var{b})}
+@tab @code{MCPXRU @var{a},@var{b},@var{c}}
+@item @code{uw1 __MCUT (acc, uw1)}
+@tab @code{@var{c} = __MCUT (@var{a}, @var{b})}
+@tab @code{MCUT @var{a},@var{b},@var{c}}
+@item @code{uw1 __MCUTSS (acc, sw1)}
+@tab @code{@var{c} = __MCUTSS (@var{a}, @var{b})}
+@tab @code{MCUTSS @var{a},@var{b},@var{c}}
+@item @code{void __MDADDACCS (acc, acc)}
+@tab @code{__MDADDACCS (@var{b}, @var{a})}
+@tab @code{MDADDACCS @var{a},@var{b}}
+@item @code{void __MDASACCS (acc, acc)}
+@tab @code{__MDASACCS (@var{b}, @var{a})}
+@tab @code{MDASACCS @var{a},@var{b}}
+@item @code{uw2 __MDCUTSSI (acc, const)}
+@tab @code{@var{c} = __MDCUTSSI (@var{a}, @var{b})}
+@tab @code{MDCUTSSI @var{a},#@var{b},@var{c}}
+@item @code{uw2 __MDPACKH (uw2, uw2)}
+@tab @code{@var{c} = __MDPACKH (@var{a}, @var{b})}
+@tab @code{MDPACKH @var{a},@var{b},@var{c}}
+@item @code{uw2 __MDROTLI (uw2, const)}
+@tab @code{@var{c} = __MDROTLI (@var{a}, @var{b})}
+@tab @code{MDROTLI @var{a},#@var{b},@var{c}}
+@item @code{void __MDSUBACCS (acc, acc)}
+@tab @code{__MDSUBACCS (@var{b}, @var{a})}
+@tab @code{MDSUBACCS @var{a},@var{b}}
+@item @code{void __MDUNPACKH (uw1 *, uw2)}
+@tab @code{__MDUNPACKH (&@var{b}, @var{a})}
+@tab @code{MDUNPACKH @var{a},@var{b}}
+@item @code{uw2 __MEXPDHD (uw1, const)}
+@tab @code{@var{c} = __MEXPDHD (@var{a}, @var{b})}
+@tab @code{MEXPDHD @var{a},#@var{b},@var{c}}
+@item @code{uw1 __MEXPDHW (uw1, const)}
+@tab @code{@var{c} = __MEXPDHW (@var{a}, @var{b})}
+@tab @code{MEXPDHW @var{a},#@var{b},@var{c}}
+@item @code{uw1 __MHDSETH (uw1, const)}
+@tab @code{@var{c} = __MHDSETH (@var{a}, @var{b})}
+@tab @code{MHDSETH @var{a},#@var{b},@var{c}}
+@item @code{sw1 __MHDSETS (const)}
+@tab @code{@var{b} = __MHDSETS (@var{a})}
+@tab @code{MHDSETS #@var{a},@var{b}}
+@item @code{uw1 __MHSETHIH (uw1, const)}
+@tab @code{@var{b} = __MHSETHIH (@var{b}, @var{a})}
+@tab @code{MHSETHIH #@var{a},@var{b}}
+@item @code{sw1 __MHSETHIS (sw1, const)}
+@tab @code{@var{b} = __MHSETHIS (@var{b}, @var{a})}
+@tab @code{MHSETHIS #@var{a},@var{b}}
+@item @code{uw1 __MHSETLOH (uw1, const)}
+@tab @code{@var{b} = __MHSETLOH (@var{b}, @var{a})}
+@tab @code{MHSETLOH #@var{a},@var{b}}
+@item @code{sw1 __MHSETLOS (sw1, const)}
+@tab @code{@var{b} = __MHSETLOS (@var{b}, @var{a})}
+@tab @code{MHSETLOS #@var{a},@var{b}}
+@item @code{uw1 __MHTOB (uw2)}
+@tab @code{@var{b} = __MHTOB (@var{a})}
+@tab @code{MHTOB @var{a},@var{b}}
+@item @code{void __MMACHS (acc, sw1, sw1)}
+@tab @code{__MMACHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MMACHS @var{a},@var{b},@var{c}}
+@item @code{void __MMACHU (acc, uw1, uw1)}
+@tab @code{__MMACHU (@var{c}, @var{a}, @var{b})}
+@tab @code{MMACHU @var{a},@var{b},@var{c}}
+@item @code{void __MMRDHS (acc, sw1, sw1)}
+@tab @code{__MMRDHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MMRDHS @var{a},@var{b},@var{c}}
+@item @code{void __MMRDHU (acc, uw1, uw1)}
+@tab @code{__MMRDHU (@var{c}, @var{a}, @var{b})}
+@tab @code{MMRDHU @var{a},@var{b},@var{c}}
+@item @code{void __MMULHS (acc, sw1, sw1)}
+@tab @code{__MMULHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MMULHS @var{a},@var{b},@var{c}}
+@item @code{void __MMULHU (acc, uw1, uw1)}
+@tab @code{__MMULHU (@var{c}, @var{a}, @var{b})}
+@tab @code{MMULHU @var{a},@var{b},@var{c}}
+@item @code{void __MMULXHS (acc, sw1, sw1)}
+@tab @code{__MMULXHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MMULXHS @var{a},@var{b},@var{c}}
+@item @code{void __MMULXHU (acc, uw1, uw1)}
+@tab @code{__MMULXHU (@var{c}, @var{a}, @var{b})}
+@tab @code{MMULXHU @var{a},@var{b},@var{c}}
+@item @code{uw1 __MNOT (uw1)}
+@tab @code{@var{b} = __MNOT (@var{a})}
+@tab @code{MNOT @var{a},@var{b}}
+@item @code{uw1 __MOR (uw1, uw1)}
+@tab @code{@var{c} = __MOR (@var{a}, @var{b})}
+@tab @code{MOR @var{a},@var{b},@var{c}}
+@item @code{uw1 __MPACKH (uh, uh)}
+@tab @code{@var{c} = __MPACKH (@var{a}, @var{b})}
+@tab @code{MPACKH @var{a},@var{b},@var{c}}
+@item @code{sw2 __MQADDHSS (sw2, sw2)}
+@tab @code{@var{c} = __MQADDHSS (@var{a}, @var{b})}
+@tab @code{MQADDHSS @var{a},@var{b},@var{c}}
+@item @code{uw2 __MQADDHUS (uw2, uw2)}
+@tab @code{@var{c} = __MQADDHUS (@var{a}, @var{b})}
+@tab @code{MQADDHUS @var{a},@var{b},@var{c}}
+@item @code{void __MQCPXIS (acc, sw2, sw2)}
+@tab @code{__MQCPXIS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQCPXIS @var{a},@var{b},@var{c}}
+@item @code{void __MQCPXIU (acc, uw2, uw2)}
+@tab @code{__MQCPXIU (@var{c}, @var{a}, @var{b})}
+@tab @code{MQCPXIU @var{a},@var{b},@var{c}}
+@item @code{void __MQCPXRS (acc, sw2, sw2)}
+@tab @code{__MQCPXRS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQCPXRS @var{a},@var{b},@var{c}}
+@item @code{void __MQCPXRU (acc, uw2, uw2)}
+@tab @code{__MQCPXRU (@var{c}, @var{a}, @var{b})}
+@tab @code{MQCPXRU @var{a},@var{b},@var{c}}
+@item @code{sw2 __MQLCLRHS (sw2, sw2)}
+@tab @code{@var{c} = __MQLCLRHS (@var{a}, @var{b})}
+@tab @code{MQLCLRHS @var{a},@var{b},@var{c}}
+@item @code{sw2 __MQLMTHS (sw2, sw2)}
+@tab @code{@var{c} = __MQLMTHS (@var{a}, @var{b})}
+@tab @code{MQLMTHS @var{a},@var{b},@var{c}}
+@item @code{void __MQMACHS (acc, sw2, sw2)}
+@tab @code{__MQMACHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQMACHS @var{a},@var{b},@var{c}}
+@item @code{void __MQMACHU (acc, uw2, uw2)}
+@tab @code{__MQMACHU (@var{c}, @var{a}, @var{b})}
+@tab @code{MQMACHU @var{a},@var{b},@var{c}}
+@item @code{void __MQMACXHS (acc, sw2, sw2)}
+@tab @code{__MQMACXHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQMACXHS @var{a},@var{b},@var{c}}
+@item @code{void __MQMULHS (acc, sw2, sw2)}
+@tab @code{__MQMULHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQMULHS @var{a},@var{b},@var{c}}
+@item @code{void __MQMULHU (acc, uw2, uw2)}
+@tab @code{__MQMULHU (@var{c}, @var{a}, @var{b})}
+@tab @code{MQMULHU @var{a},@var{b},@var{c}}
+@item @code{void __MQMULXHS (acc, sw2, sw2)}
+@tab @code{__MQMULXHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQMULXHS @var{a},@var{b},@var{c}}
+@item @code{void __MQMULXHU (acc, uw2, uw2)}
+@tab @code{__MQMULXHU (@var{c}, @var{a}, @var{b})}
+@tab @code{MQMULXHU @var{a},@var{b},@var{c}}
+@item @code{sw2 __MQSATHS (sw2, sw2)}
+@tab @code{@var{c} = __MQSATHS (@var{a}, @var{b})}
+@tab @code{MQSATHS @var{a},@var{b},@var{c}}
+@item @code{uw2 __MQSLLHI (uw2, int)}
+@tab @code{@var{c} = __MQSLLHI (@var{a}, @var{b})}
+@tab @code{MQSLLHI @var{a},@var{b},@var{c}}
+@item @code{sw2 __MQSRAHI (sw2, int)}
+@tab @code{@var{c} = __MQSRAHI (@var{a}, @var{b})}
+@tab @code{MQSRAHI @var{a},@var{b},@var{c}}
+@item @code{sw2 __MQSUBHSS (sw2, sw2)}
+@tab @code{@var{c} = __MQSUBHSS (@var{a}, @var{b})}
+@tab @code{MQSUBHSS @var{a},@var{b},@var{c}}
+@item @code{uw2 __MQSUBHUS (uw2, uw2)}
+@tab @code{@var{c} = __MQSUBHUS (@var{a}, @var{b})}
+@tab @code{MQSUBHUS @var{a},@var{b},@var{c}}
+@item @code{void __MQXMACHS (acc, sw2, sw2)}
+@tab @code{__MQXMACHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQXMACHS @var{a},@var{b},@var{c}}
+@item @code{void __MQXMACXHS (acc, sw2, sw2)}
+@tab @code{__MQXMACXHS (@var{c}, @var{a}, @var{b})}
+@tab @code{MQXMACXHS @var{a},@var{b},@var{c}}
+@item @code{uw1 __MRDACC (acc)}
+@tab @code{@var{b} = __MRDACC (@var{a})}
+@tab @code{MRDACC @var{a},@var{b}}
+@item @code{uw1 __MRDACCG (acc)}
+@tab @code{@var{b} = __MRDACCG (@var{a})}
+@tab @code{MRDACCG @var{a},@var{b}}
+@item @code{uw1 __MROTLI (uw1, const)}
+@tab @code{@var{c} = __MROTLI (@var{a}, @var{b})}
+@tab @code{MROTLI @var{a},#@var{b},@var{c}}
+@item @code{uw1 __MROTRI (uw1, const)}
+@tab @code{@var{c} = __MROTRI (@var{a}, @var{b})}
+@tab @code{MROTRI @var{a},#@var{b},@var{c}}
+@item @code{sw1 __MSATHS (sw1, sw1)}
+@tab @code{@var{c} = __MSATHS (@var{a}, @var{b})}
+@tab @code{MSATHS @var{a},@var{b},@var{c}}
+@item @code{uw1 __MSATHU (uw1, uw1)}
+@tab @code{@var{c} = __MSATHU (@var{a}, @var{b})}
+@tab @code{MSATHU @var{a},@var{b},@var{c}}
+@item @code{uw1 __MSLLHI (uw1, const)}
+@tab @code{@var{c} = __MSLLHI (@var{a}, @var{b})}
+@tab @code{MSLLHI @var{a},#@var{b},@var{c}}
+@item @code{sw1 __MSRAHI (sw1, const)}
+@tab @code{@var{c} = __MSRAHI (@var{a}, @var{b})}
+@tab @code{MSRAHI @var{a},#@var{b},@var{c}}
+@item @code{uw1 __MSRLHI (uw1, const)}
+@tab @code{@var{c} = __MSRLHI (@var{a}, @var{b})}
+@tab @code{MSRLHI @var{a},#@var{b},@var{c}}
+@item @code{void __MSUBACCS (acc, acc)}
+@tab @code{__MSUBACCS (@var{b}, @var{a})}
+@tab @code{MSUBACCS @var{a},@var{b}}
+@item @code{sw1 __MSUBHSS (sw1, sw1)}
+@tab @code{@var{c} = __MSUBHSS (@var{a}, @var{b})}
+@tab @code{MSUBHSS @var{a},@var{b},@var{c}}
+@item @code{uw1 __MSUBHUS (uw1, uw1)}
+@tab @code{@var{c} = __MSUBHUS (@var{a}, @var{b})}
+@tab @code{MSUBHUS @var{a},@var{b},@var{c}}
+@item @code{void __MTRAP (void)}
+@tab @code{__MTRAP ()}
+@tab @code{MTRAP}
+@item @code{uw2 __MUNPACKH (uw1)}
+@tab @code{@var{b} = __MUNPACKH (@var{a})}
+@tab @code{MUNPACKH @var{a},@var{b}}
+@item @code{uw1 __MWCUT (uw2, uw1)}
+@tab @code{@var{c} = __MWCUT (@var{a}, @var{b})}
+@tab @code{MWCUT @var{a},@var{b},@var{c}}
+@item @code{void __MWTACC (acc, uw1)}
+@tab @code{__MWTACC (@var{b}, @var{a})}
+@tab @code{MWTACC @var{a},@var{b}}
+@item @code{void __MWTACCG (acc, uw1)}
+@tab @code{__MWTACCG (@var{b}, @var{a})}
+@tab @code{MWTACCG @var{a},@var{b}}
+@item @code{uw1 __MXOR (uw1, uw1)}
+@tab @code{@var{c} = __MXOR (@var{a}, @var{b})}
+@tab @code{MXOR @var{a},@var{b},@var{c}}
+@end multitable
+
+@node Other Built-in Functions
+@subsubsection Other Built-in Functions
+
+This section describes built-in functions that are not named after
+a specific FR-V instruction.
+
+@table @code
+@item sw2 __IACCreadll (iacc @var{reg})
+Return the full 64-bit value of IACC0@. The @var{reg} argument is reserved
+for future expansion and must be 0.
+
+@item sw1 __IACCreadl (iacc @var{reg})
+Return the value of IACC0H if @var{reg} is 0 and IACC0L if @var{reg} is 1.
+Other values of @var{reg} are rejected as invalid.
+
+@item void __IACCsetll (iacc @var{reg}, sw2 @var{x})
+Set the full 64-bit value of IACC0 to @var{x}. The @var{reg} argument
+is reserved for future expansion and must be 0.
+
+@item void __IACCsetl (iacc @var{reg}, sw1 @var{x})
+Set IACC0H to @var{x} if @var{reg} is 0 and IACC0L to @var{x} if @var{reg}
+is 1. Other values of @var{reg} are rejected as invalid.
+
+@item void __data_prefetch0 (const void *@var{x})
+Use the @code{dcpl} instruction to load the contents of address @var{x}
+into the data cache.
+
+@item void __data_prefetch (const void *@var{x})
+Use the @code{nldub} instruction to load the contents of address @var{x}
+into the data cache. The instruction will be issued in slot I1@.
+@end table
@node X86 Built-in Functions
@subsection X86 Built-in Functions
The following built-in functions are made available by @option{-mmmx}.
All of them generate the machine instruction that is part of the name.
-@example
+@smallexample
v8qi __builtin_ia32_paddb (v8qi, v8qi)
v4hi __builtin_ia32_paddw (v4hi, v4hi)
v2si __builtin_ia32_paddd (v2si, v2si)
v8qi __builtin_ia32_packsswb (v4hi, v4hi)
v4hi __builtin_ia32_packssdw (v2si, v2si)
v8qi __builtin_ia32_packuswb (v4hi, v4hi)
-@end example
+@end smallexample
The following built-in functions are made available either with
@option{-msse}, or with a combination of @option{-m3dnow} and
@option{-march=athlon}. All of them generate the machine
instruction that is part of the name.
-@example
+@smallexample
v4hi __builtin_ia32_pmulhuw (v4hi, v4hi)
v8qi __builtin_ia32_pavgb (v8qi, v8qi)
v4hi __builtin_ia32_pavgw (v4hi, v4hi)
void __builtin_ia32_maskmovq (v8qi, v8qi, char *)
void __builtin_ia32_movntq (di *, di)
void __builtin_ia32_sfence (void)
-@end example
+@end smallexample
The following built-in functions are available when @option{-msse} is used.
All of them generate the machine instruction that is part of the name.
-@example
+@smallexample
int __builtin_ia32_comieq (v4sf, v4sf)
int __builtin_ia32_comineq (v4sf, v4sf)
int __builtin_ia32_comilt (v4sf, v4sf)
v4sf __builtin_ia32_shufps (v4sf, v4sf, int)
void __builtin_ia32_movntps (float *, v4sf)
int __builtin_ia32_movmskps (v4sf)
-@end example
+@end smallexample
The following built-in functions are available when @option{-msse} is used.
Generates the @code{movlps} machine instruction as a store to memory.
@end table
-The following built-in functions are available when @option{-mpni} is used.
+The following built-in functions are available when @option{-msse3} is used.
All of them generate the machine instruction that is part of the name.
-@example
+@smallexample
v2df __builtin_ia32_addsubpd (v2df, v2df)
v2df __builtin_ia32_addsubps (v2df, v2df)
v2df __builtin_ia32_haddpd (v2df, v2df)
v4sf __builtin_ia32_movshdup (v4sf)
v4sf __builtin_ia32_movsldup (v4sf)
void __builtin_ia32_mwait (unsigned int, unsigned int)
-@end example
+@end smallexample
+
+The following built-in functions are available when @option{-msse3} is used.
+
+@table @code
+@item v2df __builtin_ia32_loadddup (double const *)
+Generates the @code{movddup} machine instruction as a load from memory.
+@end table
+
+The following built-in functions are available when @option{-m3dnow} is used.
+All of them generate the machine instruction that is part of the name.
+
+@smallexample
+void __builtin_ia32_femms (void)
+v8qi __builtin_ia32_pavgusb (v8qi, v8qi)
+v2si __builtin_ia32_pf2id (v2sf)
+v2sf __builtin_ia32_pfacc (v2sf, v2sf)
+v2sf __builtin_ia32_pfadd (v2sf, v2sf)
+v2si __builtin_ia32_pfcmpeq (v2sf, v2sf)
+v2si __builtin_ia32_pfcmpge (v2sf, v2sf)
+v2si __builtin_ia32_pfcmpgt (v2sf, v2sf)
+v2sf __builtin_ia32_pfmax (v2sf, v2sf)
+v2sf __builtin_ia32_pfmin (v2sf, v2sf)
+v2sf __builtin_ia32_pfmul (v2sf, v2sf)
+v2sf __builtin_ia32_pfrcp (v2sf)
+v2sf __builtin_ia32_pfrcpit1 (v2sf, v2sf)
+v2sf __builtin_ia32_pfrcpit2 (v2sf, v2sf)
+v2sf __builtin_ia32_pfrsqrt (v2sf)
+v2sf __builtin_ia32_pfrsqrtit1 (v2sf, v2sf)
+v2sf __builtin_ia32_pfsub (v2sf, v2sf)
+v2sf __builtin_ia32_pfsubr (v2sf, v2sf)
+v2sf __builtin_ia32_pi2fd (v2si)
+v4hi __builtin_ia32_pmulhrw (v4hi, v4hi)
+@end smallexample
+
+The following built-in functions are available when both @option{-m3dnow}
+and @option{-march=athlon} are used. All of them generate the machine
+instruction that is part of the name.
+
+@smallexample
+v2si __builtin_ia32_pf2iw (v2sf)
+v2sf __builtin_ia32_pfnacc (v2sf, v2sf)
+v2sf __builtin_ia32_pfpnacc (v2sf, v2sf)
+v2sf __builtin_ia32_pi2fw (v2si)
+v2sf __builtin_ia32_pswapdsf (v2sf)
+v2si __builtin_ia32_pswapdsi (v2si)
+@end smallexample
+
+@node MIPS Paired-Single Support
+@subsection MIPS Paired-Single Support
+
+The MIPS64 architecture includes a number of instructions that
+operate on pairs of single-precision floating-point values.
+Each pair is packed into a 64-bit floating-point register,
+with one element being designated the ``upper half'' and
+the other being designated the ``lower half''.
+
+GCC supports paired-single operations using both the generic
+vector extensions (@pxref{Vector Extensions}) and a collection of
+MIPS-specific built-in functions. Both kinds of support are
+enabled by the @option{-mpaired-single} command-line option.
+
+The vector type associated with paired-single values is usually
+called @code{v2sf}. It can be defined in C as follows:
+
+@smallexample
+typedef float v2sf __attribute__ ((vector_size (8)));
+@end smallexample
+
+@code{v2sf} values are initialized in the same way as aggregates.
+For example:
+
+@smallexample
+v2sf a = @{1.5, 9.1@};
+v2sf b;
+float e, f;
+b = (v2sf) @{e, f@};
+@end smallexample
+
+@emph{Note:} The CPU's endianness determines which value is stored in
+the upper half of a register and which value is stored in the lower half.
+On little-endian targets, the first value is the lower one and the second
+value is the upper one. The opposite order applies to big-endian targets.
+For example, the code above will set the lower half of @code{a} to
+@code{1.5} on little-endian targets and @code{9.1} on big-endian targets.
+
+@menu
+* Paired-Single Arithmetic::
+* Paired-Single Built-in Functions::
+* MIPS-3D Built-in Functions::
+@end menu
+
+@node Paired-Single Arithmetic
+@subsubsection Paired-Single Arithmetic
+
+The table below lists the @code{v2sf} operations for which hardware
+support exists. @code{a}, @code{b} and @code{c} are @code{v2sf}
+values and @code{x} is an integral value.
+
+@multitable @columnfractions .50 .50
+@item C code @tab MIPS instruction
+@item @code{a + b} @tab @code{add.ps}
+@item @code{a - b} @tab @code{sub.ps}
+@item @code{-a} @tab @code{neg.ps}
+@item @code{a * b} @tab @code{mul.ps}
+@item @code{a * b + c} @tab @code{madd.ps}
+@item @code{a * b - c} @tab @code{msub.ps}
+@item @code{-(a * b + c)} @tab @code{nmadd.ps}
+@item @code{-(a * b - c)} @tab @code{nmsub.ps}
+@item @code{x ? a : b} @tab @code{movn.ps}/@code{movz.ps}
+@end multitable
+
+Note that the multiply-accumulate instructions can be disabled
+using the command-line option @code{-mno-fused-madd}.
+
+@node Paired-Single Built-in Functions
+@subsubsection Paired-Single Built-in Functions
+
+The following paired-single functions map directly to a particular
+MIPS instruction. Please refer to the architecture specification
+for details on what each instruction does.
+
+@table @code
+@item v2sf __builtin_mips_pll_ps (v2sf, v2sf)
+Pair lower lower (@code{pll.ps}).
+
+@item v2sf __builtin_mips_pul_ps (v2sf, v2sf)
+Pair upper lower (@code{pul.ps}).
+
+@item v2sf __builtin_mips_plu_ps (v2sf, v2sf)
+Pair lower upper (@code{plu.ps}).
+
+@item v2sf __builtin_mips_puu_ps (v2sf, v2sf)
+Pair upper upper (@code{puu.ps}).
+
+@item v2sf __builtin_mips_cvt_ps_s (float, float)
+Convert pair to paired single (@code{cvt.ps.s}).
+
+@item float __builtin_mips_cvt_s_pl (v2sf)
+Convert pair lower to single (@code{cvt.s.pl}).
+
+@item float __builtin_mips_cvt_s_pu (v2sf)
+Convert pair upper to single (@code{cvt.s.pu}).
+
+@item v2sf __builtin_mips_abs_ps (v2sf)
+Absolute value (@code{abs.ps}).
+
+@item v2sf __builtin_mips_alnv_ps (v2sf, v2sf, int)
+Align variable (@code{alnv.ps}).
+
+@emph{Note:} The value of the third parameter must be 0 or 4
+modulo 8, otherwise the result will be unpredictable. Please read the
+instruction description for details.
+@end table
+
+The following multi-instruction functions are also available.
+In each case, @var{cond} can be any of the 16 floating-point conditions:
+@code{f}, @code{un}, @code{eq}, @code{ueq}, @code{olt}, @code{ult},
+@code{ole}, @code{ule}, @code{sf}, @code{ngle}, @code{seq}, @code{ngl},
+@code{lt}, @code{nge}, @code{le} or @code{ngt}.
+
+@table @code
+@item v2sf __builtin_mips_movt_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+@itemx v2sf __builtin_mips_movf_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+Conditional move based on floating point comparison (@code{c.@var{cond}.ps},
+@code{movt.ps}/@code{movf.ps}).
+
+The @code{movt} functions return the value @var{x} computed by:
+
+@smallexample
+c.@var{cond}.ps @var{cc},@var{a},@var{b}
+mov.ps @var{x},@var{c}
+movt.ps @var{x},@var{d},@var{cc}
+@end smallexample
+
+The @code{movf} functions are similar but use @code{movf.ps} instead
+of @code{movt.ps}.
+
+@item int __builtin_mips_upper_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+@itemx int __builtin_mips_lower_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+Comparison of two paired-single values (@code{c.@var{cond}.ps},
+@code{bc1t}/@code{bc1f}).
+
+These functions compare @var{a} and @var{b} using @code{c.@var{cond}.ps}
+and return either the upper or lower half of the result. For example:
+
+@smallexample
+v2sf a, b;
+if (__builtin_mips_upper_c_eq_ps (a, b))
+ upper_halves_are_equal ();
+else
+ upper_halves_are_unequal ();
+
+if (__builtin_mips_lower_c_eq_ps (a, b))
+ lower_halves_are_equal ();
+else
+ lower_halves_are_unequal ();
+@end smallexample
+@end table
+
+@node MIPS-3D Built-in Functions
+@subsubsection MIPS-3D Built-in Functions
+
+The MIPS-3D Application-Specific Extension (ASE) includes additional
+paired-single instructions that are designed to improve the performance
+of 3D graphics operations. Support for these instructions is controlled
+by the @option{-mips3d} command-line option.
+
+The functions listed below map directly to a particular MIPS-3D
+instruction. Please refer to the architecture specification for
+more details on what each instruction does.
+
+@table @code
+@item v2sf __builtin_mips_addr_ps (v2sf, v2sf)
+Reduction add (@code{addr.ps}).
+
+@item v2sf __builtin_mips_mulr_ps (v2sf, v2sf)
+Reduction multiply (@code{mulr.ps}).
+
+@item v2sf __builtin_mips_cvt_pw_ps (v2sf)
+Convert paired single to paired word (@code{cvt.pw.ps}).
+
+@item v2sf __builtin_mips_cvt_ps_pw (v2sf)
+Convert paired word to paired single (@code{cvt.ps.pw}).
+
+@item float __builtin_mips_recip1_s (float)
+@itemx double __builtin_mips_recip1_d (double)
+@itemx v2sf __builtin_mips_recip1_ps (v2sf)
+Reduced precision reciprocal (sequence step 1) (@code{recip1.@var{fmt}}).
+
+@item float __builtin_mips_recip2_s (float, float)
+@itemx double __builtin_mips_recip2_d (double, double)
+@itemx v2sf __builtin_mips_recip2_ps (v2sf, v2sf)
+Reduced precision reciprocal (sequence step 2) (@code{recip2.@var{fmt}}).
+
+@item float __builtin_mips_rsqrt1_s (float)
+@itemx double __builtin_mips_rsqrt1_d (double)
+@itemx v2sf __builtin_mips_rsqrt1_ps (v2sf)
+Reduced precision reciprocal square root (sequence step 1)
+(@code{rsqrt1.@var{fmt}}).
+
+@item float __builtin_mips_rsqrt2_s (float, float)
+@itemx double __builtin_mips_rsqrt2_d (double, double)
+@itemx v2sf __builtin_mips_rsqrt2_ps (v2sf, v2sf)
+Reduced precision reciprocal square root (sequence step 2)
+(@code{rsqrt2.@var{fmt}}).
+@end table
+
+The following multi-instruction functions are also available.
+In each case, @var{cond} can be any of the 16 floating-point conditions:
+@code{f}, @code{un}, @code{eq}, @code{ueq}, @code{olt}, @code{ult},
+@code{ole}, @code{ule}, @code{sf}, @code{ngle}, @code{seq},
+@code{ngl}, @code{lt}, @code{nge}, @code{le} or @code{ngt}.
+
+@table @code
+@item int __builtin_mips_cabs_@var{cond}_s (float @var{a}, float @var{b})
+@itemx int __builtin_mips_cabs_@var{cond}_d (double @var{a}, double @var{b})
+Absolute comparison of two scalar values (@code{cabs.@var{cond}.@var{fmt}},
+@code{bc1t}/@code{bc1f}).
+
+These functions compare @var{a} and @var{b} using @code{cabs.@var{cond}.s}
+or @code{cabs.@var{cond}.d} and return the result as a boolean value.
+For example:
+
+@smallexample
+float a, b;
+if (__builtin_mips_cabs_eq_s (a, b))
+ true ();
+else
+ false ();
+@end smallexample
-The following built-in functions are available when @option{-mpni} is used.
+@item int __builtin_mips_upper_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+@itemx int __builtin_mips_lower_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+Absolute comparison of two paired-single values (@code{cabs.@var{cond}.ps},
+@code{bc1t}/@code{bc1f}).
-@table @code
-@item v2df __builtin_ia32_loadddup (double const *)
-Generates the @code{movddup} machine instruction as a load from memory.
-@end table
+These functions compare @var{a} and @var{b} using @code{cabs.@var{cond}.ps}
+and return either the upper or lower half of the result. For example:
-The following built-in functions are available when @option{-m3dnow} is used.
-All of them generate the machine instruction that is part of the name.
+@smallexample
+v2sf a, b;
+if (__builtin_mips_upper_cabs_eq_ps (a, b))
+ upper_halves_are_equal ();
+else
+ upper_halves_are_unequal ();
+
+if (__builtin_mips_lower_cabs_eq_ps (a, b))
+ lower_halves_are_equal ();
+else
+ lower_halves_are_unequal ();
+@end smallexample
-@example
-void __builtin_ia32_femms (void)
-v8qi __builtin_ia32_pavgusb (v8qi, v8qi)
-v2si __builtin_ia32_pf2id (v2sf)
-v2sf __builtin_ia32_pfacc (v2sf, v2sf)
-v2sf __builtin_ia32_pfadd (v2sf, v2sf)
-v2si __builtin_ia32_pfcmpeq (v2sf, v2sf)
-v2si __builtin_ia32_pfcmpge (v2sf, v2sf)
-v2si __builtin_ia32_pfcmpgt (v2sf, v2sf)
-v2sf __builtin_ia32_pfmax (v2sf, v2sf)
-v2sf __builtin_ia32_pfmin (v2sf, v2sf)
-v2sf __builtin_ia32_pfmul (v2sf, v2sf)
-v2sf __builtin_ia32_pfrcp (v2sf)
-v2sf __builtin_ia32_pfrcpit1 (v2sf, v2sf)
-v2sf __builtin_ia32_pfrcpit2 (v2sf, v2sf)
-v2sf __builtin_ia32_pfrsqrt (v2sf)
-v2sf __builtin_ia32_pfrsqrtit1 (v2sf, v2sf)
-v2sf __builtin_ia32_pfsub (v2sf, v2sf)
-v2sf __builtin_ia32_pfsubr (v2sf, v2sf)
-v2sf __builtin_ia32_pi2fd (v2si)
-v4hi __builtin_ia32_pmulhrw (v4hi, v4hi)
-@end example
+@item v2sf __builtin_mips_movt_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+@itemx v2sf __builtin_mips_movf_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+Conditional move based on absolute comparison (@code{cabs.@var{cond}.ps},
+@code{movt.ps}/@code{movf.ps}).
-The following built-in functions are available when both @option{-m3dnow}
-and @option{-march=athlon} are used. All of them generate the machine
-instruction that is part of the name.
+The @code{movt} functions return the value @var{x} computed by:
-@example
-v2si __builtin_ia32_pf2iw (v2sf)
-v2sf __builtin_ia32_pfnacc (v2sf, v2sf)
-v2sf __builtin_ia32_pfpnacc (v2sf, v2sf)
-v2sf __builtin_ia32_pi2fw (v2si)
-v2sf __builtin_ia32_pswapdsf (v2sf)
-v2si __builtin_ia32_pswapdsi (v2si)
-@end example
+@smallexample
+cabs.@var{cond}.ps @var{cc},@var{a},@var{b}
+mov.ps @var{x},@var{c}
+movt.ps @var{x},@var{d},@var{cc}
+@end smallexample
+
+The @code{movf} functions are similar but use @code{movf.ps} instead
+of @code{movt.ps}.
+
+@item int __builtin_mips_any_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+@itemx int __builtin_mips_all_c_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+@itemx int __builtin_mips_any_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+@itemx int __builtin_mips_all_cabs_@var{cond}_ps (v2sf @var{a}, v2sf @var{b})
+Comparison of two paired-single values
+(@code{c.@var{cond}.ps}/@code{cabs.@var{cond}.ps},
+@code{bc1any2t}/@code{bc1any2f}).
+
+These functions compare @var{a} and @var{b} using @code{c.@var{cond}.ps}
+or @code{cabs.@var{cond}.ps}. The @code{any} forms return true if either
+result is true and the @code{all} forms return true if both results are true.
+For example:
+
+@smallexample
+v2sf a, b;
+if (__builtin_mips_any_c_eq_ps (a, b))
+ one_is_true ();
+else
+ both_are_false ();
+
+if (__builtin_mips_all_c_eq_ps (a, b))
+ both_are_true ();
+else
+ one_is_false ();
+@end smallexample
+
+@item int __builtin_mips_any_c_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+@itemx int __builtin_mips_all_c_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+@itemx int __builtin_mips_any_cabs_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+@itemx int __builtin_mips_all_cabs_@var{cond}_4s (v2sf @var{a}, v2sf @var{b}, v2sf @var{c}, v2sf @var{d})
+Comparison of four paired-single values
+(@code{c.@var{cond}.ps}/@code{cabs.@var{cond}.ps},
+@code{bc1any4t}/@code{bc1any4f}).
+
+These functions use @code{c.@var{cond}.ps} or @code{cabs.@var{cond}.ps}
+to compare @var{a} with @var{b} and to compare @var{c} with @var{d}.
+The @code{any} forms return true if any of the four results are true
+and the @code{all} forms return true if all four results are true.
+For example:
+
+@smallexample
+v2sf a, b, c, d;
+if (__builtin_mips_any_c_eq_4s (a, b, c, d))
+ some_are_true ();
+else
+ all_are_false ();
+
+if (__builtin_mips_all_c_eq_4s (a, b, c, d))
+ all_are_true ();
+else
+ some_are_false ();
+@end smallexample
+@end table
@node PowerPC AltiVec Built-in Functions
@subsection PowerPC AltiVec Built-in Functions
-These built-in functions are available for the PowerPC family
-of computers, depending on the command-line switches used.
+GCC provides an interface for the PowerPC family of processors to access
+the AltiVec operations described in Motorola's AltiVec Programming
+Interface Manual. The interface is made available by including
+@code{<altivec.h>} and using @option{-maltivec} and
+@option{-mabi=altivec}. The interface supports the following vector
+types.
+
+@smallexample
+vector unsigned char
+vector signed char
+vector bool char
+
+vector unsigned short
+vector signed short
+vector bool short
+vector pixel
+
+vector unsigned int
+vector signed int
+vector bool int
+vector float
+@end smallexample
-The following machine modes are available for use with AltiVec built-in
-functions (@pxref{Vector Extensions}): @code{V4SI} for a vector of four
-32-bit integers, @code{V4SF} for a vector of four 32-bit floating point
-numbers, @code{V8HI} for a vector of eight 16-bit integers, and
-@code{V16QI} for a vector of sixteen 8-bit integers.
+GCC's implementation of the high-level language interface available from
+C and C++ code differs from Motorola's documentation in several ways.
-The following functions are made available by including
-@code{<altivec.h>} and using @option{-maltivec} and
-@option{-mabi=altivec}. The functions implement the functionality
-described in Motorola's AltiVec Programming Interface Manual.
+@itemize @bullet
+
+@item
+A vector constant is a list of constant expressions within curly braces.
+
+@item
+A vector initializer requires no cast if the vector constant is of the
+same type as the variable it is initializing.
+
+@item
+If @code{signed} or @code{unsigned} is omitted, the signedness of the
+vector type is the default signedness of the base type. The default
+varies depending on the operating system, so a portable program should
+always specify the signedness.
+
+@item
+Compiling with @option{-maltivec} adds keywords @code{__vector},
+@code{__pixel}, and @code{__bool}. Macros @option{vector},
+@code{pixel}, and @code{bool} are defined in @code{<altivec.h>} and can
+be undefined.
+
+@item
+GCC allows using a @code{typedef} name as the type specifier for a
+vector type.
-There are a few differences from Motorola's documentation and GCC's
-implementation. Vector constants are done with curly braces (not
-parentheses). Vector initializers require no casts if the vector
-constant is of the same type as the variable it is initializing. The
-@code{vector bool} type is deprecated and will be discontinued in
-further revisions. Use @code{vector signed} instead. If @code{signed}
-or @code{unsigned} is omitted, the vector type will default to
-@code{signed}. Lastly, all overloaded functions are implemented with macros
-for the C implementation. So code the following example will not work:
+@item
+For C, overloaded functions are implemented with macros so the following
+does not work:
@smallexample
vec_add ((vector signed int)@{1, 2, 3, 4@}, foo);
@end smallexample
-Since vec_add is a macro, the vector constant in the above example will
-be treated as four different arguments. Wrap the entire argument in
-parentheses for this to work. The C++ implementation does not use
-macros.
+Since @code{vec_add} is a macro, the vector constant in the example
+is treated as four separate arguments. Wrap the entire argument in
+parentheses for this to work.
+@end itemize
@emph{Note:} Only the @code{<altivec.h>} interface is supported.
Internally, GCC uses built-in functions to achieve the functionality in
the aforementioned header file, but they are not supported and are
subject to change without notice.
-@smallexample
-vector signed char vec_abs (vector signed char, vector signed char);
-vector signed short vec_abs (vector signed short, vector signed short);
-vector signed int vec_abs (vector signed int, vector signed int);
-vector signed float vec_abs (vector signed float, vector signed float);
+The following interfaces are supported for the generic and specific
+AltiVec operations and the AltiVec predicates. In cases where there
+is a direct mapping between generic and specific operations, only the
+generic names are shown here, although the specific operations can also
+be used.
-vector signed char vec_abss (vector signed char, vector signed char);
-vector signed short vec_abss (vector signed short, vector signed short);
+Arguments that are documented as @code{const int} require literal
+integral values within the range required for that operation.
-vector signed char vec_add (vector signed char, vector signed char);
-vector unsigned char vec_add (vector signed char, vector unsigned char);
+@smallexample
+vector signed char vec_abs (vector signed char);
+vector signed short vec_abs (vector signed short);
+vector signed int vec_abs (vector signed int);
+vector float vec_abs (vector float);
-vector unsigned char vec_add (vector unsigned char, vector signed char);
+vector signed char vec_abss (vector signed char);
+vector signed short vec_abss (vector signed short);
+vector signed int vec_abss (vector signed int);
+vector signed char vec_add (vector bool char, vector signed char);
+vector signed char vec_add (vector signed char, vector bool char);
+vector signed char vec_add (vector signed char, vector signed char);
+vector unsigned char vec_add (vector bool char, vector unsigned char);
+vector unsigned char vec_add (vector unsigned char, vector bool char);
vector unsigned char vec_add (vector unsigned char,
vector unsigned char);
+vector signed short vec_add (vector bool short, vector signed short);
+vector signed short vec_add (vector signed short, vector bool short);
vector signed short vec_add (vector signed short, vector signed short);
-vector unsigned short vec_add (vector signed short,
+vector unsigned short vec_add (vector bool short,
vector unsigned short);
vector unsigned short vec_add (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_add (vector unsigned short,
vector unsigned short);
+vector signed int vec_add (vector bool int, vector signed int);
+vector signed int vec_add (vector signed int, vector bool int);
vector signed int vec_add (vector signed int, vector signed int);
-vector unsigned int vec_add (vector signed int, vector unsigned int);
-vector unsigned int vec_add (vector unsigned int, vector signed int);
+vector unsigned int vec_add (vector bool int, vector unsigned int);
+vector unsigned int vec_add (vector unsigned int, vector bool int);
vector unsigned int vec_add (vector unsigned int, vector unsigned int);
vector float vec_add (vector float, vector float);
+vector float vec_vaddfp (vector float, vector float);
+
+vector signed int vec_vadduwm (vector bool int, vector signed int);
+vector signed int vec_vadduwm (vector signed int, vector bool int);
+vector signed int vec_vadduwm (vector signed int, vector signed int);
+vector unsigned int vec_vadduwm (vector bool int, vector unsigned int);
+vector unsigned int vec_vadduwm (vector unsigned int, vector bool int);
+vector unsigned int vec_vadduwm (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vadduhm (vector bool short,
+ vector signed short);
+vector signed short vec_vadduhm (vector signed short,
+ vector bool short);
+vector signed short vec_vadduhm (vector signed short,
+ vector signed short);
+vector unsigned short vec_vadduhm (vector bool short,
+ vector unsigned short);
+vector unsigned short vec_vadduhm (vector unsigned short,
+ vector bool short);
+vector unsigned short vec_vadduhm (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vaddubm (vector bool char, vector signed char);
+vector signed char vec_vaddubm (vector signed char, vector bool char);
+vector signed char vec_vaddubm (vector signed char, vector signed char);
+vector unsigned char vec_vaddubm (vector bool char,
+ vector unsigned char);
+vector unsigned char vec_vaddubm (vector unsigned char,
+ vector bool char);
+vector unsigned char vec_vaddubm (vector unsigned char,
+ vector unsigned char);
+
vector unsigned int vec_addc (vector unsigned int, vector unsigned int);
-vector unsigned char vec_adds (vector signed char,
- vector unsigned char);
-vector unsigned char vec_adds (vector unsigned char,
- vector signed char);
+vector unsigned char vec_adds (vector bool char, vector unsigned char);
+vector unsigned char vec_adds (vector unsigned char, vector bool char);
vector unsigned char vec_adds (vector unsigned char,
vector unsigned char);
+vector signed char vec_adds (vector bool char, vector signed char);
+vector signed char vec_adds (vector signed char, vector bool char);
vector signed char vec_adds (vector signed char, vector signed char);
-vector unsigned short vec_adds (vector signed short,
+vector unsigned short vec_adds (vector bool short,
vector unsigned short);
vector unsigned short vec_adds (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_adds (vector unsigned short,
vector unsigned short);
+vector signed short vec_adds (vector bool short, vector signed short);
+vector signed short vec_adds (vector signed short, vector bool short);
vector signed short vec_adds (vector signed short, vector signed short);
-
-vector unsigned int vec_adds (vector signed int, vector unsigned int);
-vector unsigned int vec_adds (vector unsigned int, vector signed int);
+vector unsigned int vec_adds (vector bool int, vector unsigned int);
+vector unsigned int vec_adds (vector unsigned int, vector bool int);
vector unsigned int vec_adds (vector unsigned int, vector unsigned int);
-
+vector signed int vec_adds (vector bool int, vector signed int);
+vector signed int vec_adds (vector signed int, vector bool int);
vector signed int vec_adds (vector signed int, vector signed int);
+vector signed int vec_vaddsws (vector bool int, vector signed int);
+vector signed int vec_vaddsws (vector signed int, vector bool int);
+vector signed int vec_vaddsws (vector signed int, vector signed int);
+
+vector unsigned int vec_vadduws (vector bool int, vector unsigned int);
+vector unsigned int vec_vadduws (vector unsigned int, vector bool int);
+vector unsigned int vec_vadduws (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vaddshs (vector bool short,
+ vector signed short);
+vector signed short vec_vaddshs (vector signed short,
+ vector bool short);
+vector signed short vec_vaddshs (vector signed short,
+ vector signed short);
+
+vector unsigned short vec_vadduhs (vector bool short,
+ vector unsigned short);
+vector unsigned short vec_vadduhs (vector unsigned short,
+ vector bool short);
+vector unsigned short vec_vadduhs (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vaddsbs (vector bool char, vector signed char);
+vector signed char vec_vaddsbs (vector signed char, vector bool char);
+vector signed char vec_vaddsbs (vector signed char, vector signed char);
+
+vector unsigned char vec_vaddubs (vector bool char,
+ vector unsigned char);
+vector unsigned char vec_vaddubs (vector unsigned char,
+ vector bool char);
+vector unsigned char vec_vaddubs (vector unsigned char,
+ vector unsigned char);
+
vector float vec_and (vector float, vector float);
-vector float vec_and (vector float, vector signed int);
-vector float vec_and (vector signed int, vector float);
+vector float vec_and (vector float, vector bool int);
+vector float vec_and (vector bool int, vector float);
+vector bool int vec_and (vector bool int, vector bool int);
+vector signed int vec_and (vector bool int, vector signed int);
+vector signed int vec_and (vector signed int, vector bool int);
vector signed int vec_and (vector signed int, vector signed int);
-vector unsigned int vec_and (vector signed int, vector unsigned int);
-vector unsigned int vec_and (vector unsigned int, vector signed int);
+vector unsigned int vec_and (vector bool int, vector unsigned int);
+vector unsigned int vec_and (vector unsigned int, vector bool int);
vector unsigned int vec_and (vector unsigned int, vector unsigned int);
+vector bool short vec_and (vector bool short, vector bool short);
+vector signed short vec_and (vector bool short, vector signed short);
+vector signed short vec_and (vector signed short, vector bool short);
vector signed short vec_and (vector signed short, vector signed short);
-vector unsigned short vec_and (vector signed short,
+vector unsigned short vec_and (vector bool short,
vector unsigned short);
vector unsigned short vec_and (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_and (vector unsigned short,
vector unsigned short);
+vector signed char vec_and (vector bool char, vector signed char);
+vector bool char vec_and (vector bool char, vector bool char);
+vector signed char vec_and (vector signed char, vector bool char);
vector signed char vec_and (vector signed char, vector signed char);
-vector unsigned char vec_and (vector signed char, vector unsigned char);
-
-vector unsigned char vec_and (vector unsigned char, vector signed char);
-
+vector unsigned char vec_and (vector bool char, vector unsigned char);
+vector unsigned char vec_and (vector unsigned char, vector bool char);
vector unsigned char vec_and (vector unsigned char,
vector unsigned char);
vector float vec_andc (vector float, vector float);
-vector float vec_andc (vector float, vector signed int);
-vector float vec_andc (vector signed int, vector float);
+vector float vec_andc (vector float, vector bool int);
+vector float vec_andc (vector bool int, vector float);
+vector bool int vec_andc (vector bool int, vector bool int);
+vector signed int vec_andc (vector bool int, vector signed int);
+vector signed int vec_andc (vector signed int, vector bool int);
vector signed int vec_andc (vector signed int, vector signed int);
-vector unsigned int vec_andc (vector signed int, vector unsigned int);
-vector unsigned int vec_andc (vector unsigned int, vector signed int);
+vector unsigned int vec_andc (vector bool int, vector unsigned int);
+vector unsigned int vec_andc (vector unsigned int, vector bool int);
vector unsigned int vec_andc (vector unsigned int, vector unsigned int);
-
+vector bool short vec_andc (vector bool short, vector bool short);
+vector signed short vec_andc (vector bool short, vector signed short);
+vector signed short vec_andc (vector signed short, vector bool short);
vector signed short vec_andc (vector signed short, vector signed short);
-
-vector unsigned short vec_andc (vector signed short,
+vector unsigned short vec_andc (vector bool short,
vector unsigned short);
vector unsigned short vec_andc (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_andc (vector unsigned short,
vector unsigned short);
+vector signed char vec_andc (vector bool char, vector signed char);
+vector bool char vec_andc (vector bool char, vector bool char);
+vector signed char vec_andc (vector signed char, vector bool char);
vector signed char vec_andc (vector signed char, vector signed char);
-vector unsigned char vec_andc (vector signed char,
- vector unsigned char);
-vector unsigned char vec_andc (vector unsigned char,
- vector signed char);
+vector unsigned char vec_andc (vector bool char, vector unsigned char);
+vector unsigned char vec_andc (vector unsigned char, vector bool char);
vector unsigned char vec_andc (vector unsigned char,
vector unsigned char);
vector unsigned int vec_avg (vector unsigned int, vector unsigned int);
vector signed int vec_avg (vector signed int, vector signed int);
+vector signed int vec_vavgsw (vector signed int, vector signed int);
+
+vector unsigned int vec_vavguw (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vavgsh (vector signed short,
+ vector signed short);
+
+vector unsigned short vec_vavguh (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vavgsb (vector signed char, vector signed char);
+
+vector unsigned char vec_vavgub (vector unsigned char,
+ vector unsigned char);
+
vector float vec_ceil (vector float);
vector signed int vec_cmpb (vector float, vector float);
-vector signed char vec_cmpeq (vector signed char, vector signed char);
-vector signed char vec_cmpeq (vector unsigned char,
- vector unsigned char);
-vector signed short vec_cmpeq (vector signed short,
- vector signed short);
-vector signed short vec_cmpeq (vector unsigned short,
- vector unsigned short);
-vector signed int vec_cmpeq (vector signed int, vector signed int);
-vector signed int vec_cmpeq (vector unsigned int, vector unsigned int);
-vector signed int vec_cmpeq (vector float, vector float);
+vector bool char vec_cmpeq (vector signed char, vector signed char);
+vector bool char vec_cmpeq (vector unsigned char, vector unsigned char);
+vector bool short vec_cmpeq (vector signed short, vector signed short);
+vector bool short vec_cmpeq (vector unsigned short,
+ vector unsigned short);
+vector bool int vec_cmpeq (vector signed int, vector signed int);
+vector bool int vec_cmpeq (vector unsigned int, vector unsigned int);
+vector bool int vec_cmpeq (vector float, vector float);
-vector signed int vec_cmpge (vector float, vector float);
+vector bool int vec_vcmpeqfp (vector float, vector float);
-vector signed char vec_cmpgt (vector unsigned char,
- vector unsigned char);
-vector signed char vec_cmpgt (vector signed char, vector signed char);
-vector signed short vec_cmpgt (vector unsigned short,
- vector unsigned short);
-vector signed short vec_cmpgt (vector signed short,
- vector signed short);
-vector signed int vec_cmpgt (vector unsigned int, vector unsigned int);
-vector signed int vec_cmpgt (vector signed int, vector signed int);
-vector signed int vec_cmpgt (vector float, vector float);
+vector bool int vec_vcmpequw (vector signed int, vector signed int);
+vector bool int vec_vcmpequw (vector unsigned int, vector unsigned int);
-vector signed int vec_cmple (vector float, vector float);
+vector bool short vec_vcmpequh (vector signed short,
+ vector signed short);
+vector bool short vec_vcmpequh (vector unsigned short,
+ vector unsigned short);
-vector signed char vec_cmplt (vector unsigned char,
- vector unsigned char);
-vector signed char vec_cmplt (vector signed char, vector signed char);
-vector signed short vec_cmplt (vector unsigned short,
- vector unsigned short);
-vector signed short vec_cmplt (vector signed short,
- vector signed short);
-vector signed int vec_cmplt (vector unsigned int, vector unsigned int);
-vector signed int vec_cmplt (vector signed int, vector signed int);
-vector signed int vec_cmplt (vector float, vector float);
+vector bool char vec_vcmpequb (vector signed char, vector signed char);
+vector bool char vec_vcmpequb (vector unsigned char,
+ vector unsigned char);
+
+vector bool int vec_cmpge (vector float, vector float);
+
+vector bool char vec_cmpgt (vector unsigned char, vector unsigned char);
+vector bool char vec_cmpgt (vector signed char, vector signed char);
+vector bool short vec_cmpgt (vector unsigned short,
+ vector unsigned short);
+vector bool short vec_cmpgt (vector signed short, vector signed short);
+vector bool int vec_cmpgt (vector unsigned int, vector unsigned int);
+vector bool int vec_cmpgt (vector signed int, vector signed int);
+vector bool int vec_cmpgt (vector float, vector float);
+
+vector bool int vec_vcmpgtfp (vector float, vector float);
+
+vector bool int vec_vcmpgtsw (vector signed int, vector signed int);
+
+vector bool int vec_vcmpgtuw (vector unsigned int, vector unsigned int);
+
+vector bool short vec_vcmpgtsh (vector signed short,
+ vector signed short);
+
+vector bool short vec_vcmpgtuh (vector unsigned short,
+ vector unsigned short);
+
+vector bool char vec_vcmpgtsb (vector signed char, vector signed char);
+
+vector bool char vec_vcmpgtub (vector unsigned char,
+ vector unsigned char);
+
+vector bool int vec_cmple (vector float, vector float);
+
+vector bool char vec_cmplt (vector unsigned char, vector unsigned char);
+vector bool char vec_cmplt (vector signed char, vector signed char);
+vector bool short vec_cmplt (vector unsigned short,
+ vector unsigned short);
+vector bool short vec_cmplt (vector signed short, vector signed short);
+vector bool int vec_cmplt (vector unsigned int, vector unsigned int);
+vector bool int vec_cmplt (vector signed int, vector signed int);
+vector bool int vec_cmplt (vector float, vector float);
+
+vector float vec_ctf (vector unsigned int, const int);
+vector float vec_ctf (vector signed int, const int);
-vector float vec_ctf (vector unsigned int, const char);
-vector float vec_ctf (vector signed int, const char);
+vector float vec_vcfsx (vector signed int, const int);
-vector signed int vec_cts (vector float, const char);
+vector float vec_vcfux (vector unsigned int, const int);
-vector unsigned int vec_ctu (vector float, const char);
+vector signed int vec_cts (vector float, const int);
-void vec_dss (const char);
+vector unsigned int vec_ctu (vector float, const int);
+
+void vec_dss (const int);
void vec_dssall (void);
-void vec_dst (void *, int, const char);
-
-void vec_dstst (void *, int, const char);
-
-void vec_dststt (void *, int, const char);
-
-void vec_dstt (void *, int, const char);
-
-vector float vec_expte (vector float, vector float);
-
-vector float vec_floor (vector float, vector float);
-
-vector float vec_ld (int, vector float *);
-vector float vec_ld (int, float *):
-vector signed int vec_ld (int, int *);
-vector signed int vec_ld (int, vector signed int *);
-vector unsigned int vec_ld (int, vector unsigned int *);
-vector unsigned int vec_ld (int, unsigned int *);
-vector signed short vec_ld (int, short *, vector signed short *);
-vector unsigned short vec_ld (int, unsigned short *,
- vector unsigned short *);
-vector signed char vec_ld (int, signed char *);
-vector signed char vec_ld (int, vector signed char *);
-vector unsigned char vec_ld (int, unsigned char *);
-vector unsigned char vec_ld (int, vector unsigned char *);
-
-vector signed char vec_lde (int, signed char *);
-vector unsigned char vec_lde (int, unsigned char *);
-vector signed short vec_lde (int, short *);
-vector unsigned short vec_lde (int, unsigned short *);
-vector float vec_lde (int, float *);
-vector signed int vec_lde (int, int *);
-vector unsigned int vec_lde (int, unsigned int *);
-
-void float vec_ldl (int, float *);
-void float vec_ldl (int, vector float *);
-void signed int vec_ldl (int, vector signed int *);
-void signed int vec_ldl (int, int *);
-void unsigned int vec_ldl (int, unsigned int *);
-void unsigned int vec_ldl (int, vector unsigned int *);
-void signed short vec_ldl (int, vector signed short *);
-void signed short vec_ldl (int, short *);
-void unsigned short vec_ldl (int, vector unsigned short *);
-void unsigned short vec_ldl (int, unsigned short *);
-void signed char vec_ldl (int, vector signed char *);
-void signed char vec_ldl (int, signed char *);
-void unsigned char vec_ldl (int, vector unsigned char *);
-void unsigned char vec_ldl (int, unsigned char *);
+void vec_dst (const vector unsigned char *, int, const int);
+void vec_dst (const vector signed char *, int, const int);
+void vec_dst (const vector bool char *, int, const int);
+void vec_dst (const vector unsigned short *, int, const int);
+void vec_dst (const vector signed short *, int, const int);
+void vec_dst (const vector bool short *, int, const int);
+void vec_dst (const vector pixel *, int, const int);
+void vec_dst (const vector unsigned int *, int, const int);
+void vec_dst (const vector signed int *, int, const int);
+void vec_dst (const vector bool int *, int, const int);
+void vec_dst (const vector float *, int, const int);
+void vec_dst (const unsigned char *, int, const int);
+void vec_dst (const signed char *, int, const int);
+void vec_dst (const unsigned short *, int, const int);
+void vec_dst (const short *, int, const int);
+void vec_dst (const unsigned int *, int, const int);
+void vec_dst (const int *, int, const int);
+void vec_dst (const unsigned long *, int, const int);
+void vec_dst (const long *, int, const int);
+void vec_dst (const float *, int, const int);
+
+void vec_dstst (const vector unsigned char *, int, const int);
+void vec_dstst (const vector signed char *, int, const int);
+void vec_dstst (const vector bool char *, int, const int);
+void vec_dstst (const vector unsigned short *, int, const int);
+void vec_dstst (const vector signed short *, int, const int);
+void vec_dstst (const vector bool short *, int, const int);
+void vec_dstst (const vector pixel *, int, const int);
+void vec_dstst (const vector unsigned int *, int, const int);
+void vec_dstst (const vector signed int *, int, const int);
+void vec_dstst (const vector bool int *, int, const int);
+void vec_dstst (const vector float *, int, const int);
+void vec_dstst (const unsigned char *, int, const int);
+void vec_dstst (const signed char *, int, const int);
+void vec_dstst (const unsigned short *, int, const int);
+void vec_dstst (const short *, int, const int);
+void vec_dstst (const unsigned int *, int, const int);
+void vec_dstst (const int *, int, const int);
+void vec_dstst (const unsigned long *, int, const int);
+void vec_dstst (const long *, int, const int);
+void vec_dstst (const float *, int, const int);
+
+void vec_dststt (const vector unsigned char *, int, const int);
+void vec_dststt (const vector signed char *, int, const int);
+void vec_dststt (const vector bool char *, int, const int);
+void vec_dststt (const vector unsigned short *, int, const int);
+void vec_dststt (const vector signed short *, int, const int);
+void vec_dststt (const vector bool short *, int, const int);
+void vec_dststt (const vector pixel *, int, const int);
+void vec_dststt (const vector unsigned int *, int, const int);
+void vec_dststt (const vector signed int *, int, const int);
+void vec_dststt (const vector bool int *, int, const int);
+void vec_dststt (const vector float *, int, const int);
+void vec_dststt (const unsigned char *, int, const int);
+void vec_dststt (const signed char *, int, const int);
+void vec_dststt (const unsigned short *, int, const int);
+void vec_dststt (const short *, int, const int);
+void vec_dststt (const unsigned int *, int, const int);
+void vec_dststt (const int *, int, const int);
+void vec_dststt (const unsigned long *, int, const int);
+void vec_dststt (const long *, int, const int);
+void vec_dststt (const float *, int, const int);
+
+void vec_dstt (const vector unsigned char *, int, const int);
+void vec_dstt (const vector signed char *, int, const int);
+void vec_dstt (const vector bool char *, int, const int);
+void vec_dstt (const vector unsigned short *, int, const int);
+void vec_dstt (const vector signed short *, int, const int);
+void vec_dstt (const vector bool short *, int, const int);
+void vec_dstt (const vector pixel *, int, const int);
+void vec_dstt (const vector unsigned int *, int, const int);
+void vec_dstt (const vector signed int *, int, const int);
+void vec_dstt (const vector bool int *, int, const int);
+void vec_dstt (const vector float *, int, const int);
+void vec_dstt (const unsigned char *, int, const int);
+void vec_dstt (const signed char *, int, const int);
+void vec_dstt (const unsigned short *, int, const int);
+void vec_dstt (const short *, int, const int);
+void vec_dstt (const unsigned int *, int, const int);
+void vec_dstt (const int *, int, const int);
+void vec_dstt (const unsigned long *, int, const int);
+void vec_dstt (const long *, int, const int);
+void vec_dstt (const float *, int, const int);
+
+vector float vec_expte (vector float);
+
+vector float vec_floor (vector float);
+
+vector float vec_ld (int, const vector float *);
+vector float vec_ld (int, const float *);
+vector bool int vec_ld (int, const vector bool int *);
+vector signed int vec_ld (int, const vector signed int *);
+vector signed int vec_ld (int, const int *);
+vector signed int vec_ld (int, const long *);
+vector unsigned int vec_ld (int, const vector unsigned int *);
+vector unsigned int vec_ld (int, const unsigned int *);
+vector unsigned int vec_ld (int, const unsigned long *);
+vector bool short vec_ld (int, const vector bool short *);
+vector pixel vec_ld (int, const vector pixel *);
+vector signed short vec_ld (int, const vector signed short *);
+vector signed short vec_ld (int, const short *);
+vector unsigned short vec_ld (int, const vector unsigned short *);
+vector unsigned short vec_ld (int, const unsigned short *);
+vector bool char vec_ld (int, const vector bool char *);
+vector signed char vec_ld (int, const vector signed char *);
+vector signed char vec_ld (int, const signed char *);
+vector unsigned char vec_ld (int, const vector unsigned char *);
+vector unsigned char vec_ld (int, const unsigned char *);
+
+vector signed char vec_lde (int, const signed char *);
+vector unsigned char vec_lde (int, const unsigned char *);
+vector signed short vec_lde (int, const short *);
+vector unsigned short vec_lde (int, const unsigned short *);
+vector float vec_lde (int, const float *);
+vector signed int vec_lde (int, const int *);
+vector unsigned int vec_lde (int, const unsigned int *);
+vector signed int vec_lde (int, const long *);
+vector unsigned int vec_lde (int, const unsigned long *);
+
+vector float vec_lvewx (int, float *);
+vector signed int vec_lvewx (int, int *);
+vector unsigned int vec_lvewx (int, unsigned int *);
+vector signed int vec_lvewx (int, long *);
+vector unsigned int vec_lvewx (int, unsigned long *);
+
+vector signed short vec_lvehx (int, short *);
+vector unsigned short vec_lvehx (int, unsigned short *);
+
+vector signed char vec_lvebx (int, char *);
+vector unsigned char vec_lvebx (int, unsigned char *);
+
+vector float vec_ldl (int, const vector float *);
+vector float vec_ldl (int, const float *);
+vector bool int vec_ldl (int, const vector bool int *);
+vector signed int vec_ldl (int, const vector signed int *);
+vector signed int vec_ldl (int, const int *);
+vector signed int vec_ldl (int, const long *);
+vector unsigned int vec_ldl (int, const vector unsigned int *);
+vector unsigned int vec_ldl (int, const unsigned int *);
+vector unsigned int vec_ldl (int, const unsigned long *);
+vector bool short vec_ldl (int, const vector bool short *);
+vector pixel vec_ldl (int, const vector pixel *);
+vector signed short vec_ldl (int, const vector signed short *);
+vector signed short vec_ldl (int, const short *);
+vector unsigned short vec_ldl (int, const vector unsigned short *);
+vector unsigned short vec_ldl (int, const unsigned short *);
+vector bool char vec_ldl (int, const vector bool char *);
+vector signed char vec_ldl (int, const vector signed char *);
+vector signed char vec_ldl (int, const signed char *);
+vector unsigned char vec_ldl (int, const vector unsigned char *);
+vector unsigned char vec_ldl (int, const unsigned char *);
vector float vec_loge (vector float);
-vector unsigned char vec_lvsl (int, void *, int *);
-
-vector unsigned char vec_lvsr (int, void *, int *);
+vector unsigned char vec_lvsl (int, const volatile unsigned char *);
+vector unsigned char vec_lvsl (int, const volatile signed char *);
+vector unsigned char vec_lvsl (int, const volatile unsigned short *);
+vector unsigned char vec_lvsl (int, const volatile short *);
+vector unsigned char vec_lvsl (int, const volatile unsigned int *);
+vector unsigned char vec_lvsl (int, const volatile int *);
+vector unsigned char vec_lvsl (int, const volatile unsigned long *);
+vector unsigned char vec_lvsl (int, const volatile long *);
+vector unsigned char vec_lvsl (int, const volatile float *);
+
+vector unsigned char vec_lvsr (int, const volatile unsigned char *);
+vector unsigned char vec_lvsr (int, const volatile signed char *);
+vector unsigned char vec_lvsr (int, const volatile unsigned short *);
+vector unsigned char vec_lvsr (int, const volatile short *);
+vector unsigned char vec_lvsr (int, const volatile unsigned int *);
+vector unsigned char vec_lvsr (int, const volatile int *);
+vector unsigned char vec_lvsr (int, const volatile unsigned long *);
+vector unsigned char vec_lvsr (int, const volatile long *);
+vector unsigned char vec_lvsr (int, const volatile float *);
vector float vec_madd (vector float, vector float, vector float);
-vector signed short vec_madds (vector signed short, vector signed short,
+vector signed short vec_madds (vector signed short,
+ vector signed short,
vector signed short);
-vector unsigned char vec_max (vector signed char, vector unsigned char);
-
-vector unsigned char vec_max (vector unsigned char, vector signed char);
-
+vector unsigned char vec_max (vector bool char, vector unsigned char);
+vector unsigned char vec_max (vector unsigned char, vector bool char);
vector unsigned char vec_max (vector unsigned char,
vector unsigned char);
+vector signed char vec_max (vector bool char, vector signed char);
+vector signed char vec_max (vector signed char, vector bool char);
vector signed char vec_max (vector signed char, vector signed char);
-vector unsigned short vec_max (vector signed short,
+vector unsigned short vec_max (vector bool short,
vector unsigned short);
vector unsigned short vec_max (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_max (vector unsigned short,
vector unsigned short);
+vector signed short vec_max (vector bool short, vector signed short);
+vector signed short vec_max (vector signed short, vector bool short);
vector signed short vec_max (vector signed short, vector signed short);
-vector unsigned int vec_max (vector signed int, vector unsigned int);
-vector unsigned int vec_max (vector unsigned int, vector signed int);
+vector unsigned int vec_max (vector bool int, vector unsigned int);
+vector unsigned int vec_max (vector unsigned int, vector bool int);
vector unsigned int vec_max (vector unsigned int, vector unsigned int);
+vector signed int vec_max (vector bool int, vector signed int);
+vector signed int vec_max (vector signed int, vector bool int);
vector signed int vec_max (vector signed int, vector signed int);
vector float vec_max (vector float, vector float);
+vector float vec_vmaxfp (vector float, vector float);
+
+vector signed int vec_vmaxsw (vector bool int, vector signed int);
+vector signed int vec_vmaxsw (vector signed int, vector bool int);
+vector signed int vec_vmaxsw (vector signed int, vector signed int);
+
+vector unsigned int vec_vmaxuw (vector bool int, vector unsigned int);
+vector unsigned int vec_vmaxuw (vector unsigned int, vector bool int);
+vector unsigned int vec_vmaxuw (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vmaxsh (vector bool short, vector signed short);
+vector signed short vec_vmaxsh (vector signed short, vector bool short);
+vector signed short vec_vmaxsh (vector signed short,
+ vector signed short);
+
+vector unsigned short vec_vmaxuh (vector bool short,
+ vector unsigned short);
+vector unsigned short vec_vmaxuh (vector unsigned short,
+ vector bool short);
+vector unsigned short vec_vmaxuh (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vmaxsb (vector bool char, vector signed char);
+vector signed char vec_vmaxsb (vector signed char, vector bool char);
+vector signed char vec_vmaxsb (vector signed char, vector signed char);
+
+vector unsigned char vec_vmaxub (vector bool char,
+ vector unsigned char);
+vector unsigned char vec_vmaxub (vector unsigned char,
+ vector bool char);
+vector unsigned char vec_vmaxub (vector unsigned char,
+ vector unsigned char);
+
+vector bool char vec_mergeh (vector bool char, vector bool char);
vector signed char vec_mergeh (vector signed char, vector signed char);
vector unsigned char vec_mergeh (vector unsigned char,
vector unsigned char);
+vector bool short vec_mergeh (vector bool short, vector bool short);
+vector pixel vec_mergeh (vector pixel, vector pixel);
vector signed short vec_mergeh (vector signed short,
vector signed short);
vector unsigned short vec_mergeh (vector unsigned short,
vector unsigned short);
vector float vec_mergeh (vector float, vector float);
+vector bool int vec_mergeh (vector bool int, vector bool int);
vector signed int vec_mergeh (vector signed int, vector signed int);
vector unsigned int vec_mergeh (vector unsigned int,
vector unsigned int);
+vector float vec_vmrghw (vector float, vector float);
+vector bool int vec_vmrghw (vector bool int, vector bool int);
+vector signed int vec_vmrghw (vector signed int, vector signed int);
+vector unsigned int vec_vmrghw (vector unsigned int,
+ vector unsigned int);
+
+vector bool short vec_vmrghh (vector bool short, vector bool short);
+vector signed short vec_vmrghh (vector signed short,
+ vector signed short);
+vector unsigned short vec_vmrghh (vector unsigned short,
+ vector unsigned short);
+vector pixel vec_vmrghh (vector pixel, vector pixel);
+
+vector bool char vec_vmrghb (vector bool char, vector bool char);
+vector signed char vec_vmrghb (vector signed char, vector signed char);
+vector unsigned char vec_vmrghb (vector unsigned char,
+ vector unsigned char);
+
+vector bool char vec_mergel (vector bool char, vector bool char);
vector signed char vec_mergel (vector signed char, vector signed char);
vector unsigned char vec_mergel (vector unsigned char,
vector unsigned char);
+vector bool short vec_mergel (vector bool short, vector bool short);
+vector pixel vec_mergel (vector pixel, vector pixel);
vector signed short vec_mergel (vector signed short,
vector signed short);
vector unsigned short vec_mergel (vector unsigned short,
vector unsigned short);
vector float vec_mergel (vector float, vector float);
+vector bool int vec_mergel (vector bool int, vector bool int);
vector signed int vec_mergel (vector signed int, vector signed int);
vector unsigned int vec_mergel (vector unsigned int,
vector unsigned int);
-vector unsigned short vec_mfvscr (void);
+vector float vec_vmrglw (vector float, vector float);
+vector signed int vec_vmrglw (vector signed int, vector signed int);
+vector unsigned int vec_vmrglw (vector unsigned int,
+ vector unsigned int);
+vector bool int vec_vmrglw (vector bool int, vector bool int);
+
+vector bool short vec_vmrglh (vector bool short, vector bool short);
+vector signed short vec_vmrglh (vector signed short,
+ vector signed short);
+vector unsigned short vec_vmrglh (vector unsigned short,
+ vector unsigned short);
+vector pixel vec_vmrglh (vector pixel, vector pixel);
-vector unsigned char vec_min (vector signed char, vector unsigned char);
+vector bool char vec_vmrglb (vector bool char, vector bool char);
+vector signed char vec_vmrglb (vector signed char, vector signed char);
+vector unsigned char vec_vmrglb (vector unsigned char,
+ vector unsigned char);
-vector unsigned char vec_min (vector unsigned char, vector signed char);
+vector unsigned short vec_mfvscr (void);
+vector unsigned char vec_min (vector bool char, vector unsigned char);
+vector unsigned char vec_min (vector unsigned char, vector bool char);
vector unsigned char vec_min (vector unsigned char,
vector unsigned char);
+vector signed char vec_min (vector bool char, vector signed char);
+vector signed char vec_min (vector signed char, vector bool char);
vector signed char vec_min (vector signed char, vector signed char);
-vector unsigned short vec_min (vector signed short,
+vector unsigned short vec_min (vector bool short,
vector unsigned short);
vector unsigned short vec_min (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_min (vector unsigned short,
vector unsigned short);
+vector signed short vec_min (vector bool short, vector signed short);
+vector signed short vec_min (vector signed short, vector bool short);
vector signed short vec_min (vector signed short, vector signed short);
-vector unsigned int vec_min (vector signed int, vector unsigned int);
-vector unsigned int vec_min (vector unsigned int, vector signed int);
+vector unsigned int vec_min (vector bool int, vector unsigned int);
+vector unsigned int vec_min (vector unsigned int, vector bool int);
vector unsigned int vec_min (vector unsigned int, vector unsigned int);
+vector signed int vec_min (vector bool int, vector signed int);
+vector signed int vec_min (vector signed int, vector bool int);
vector signed int vec_min (vector signed int, vector signed int);
vector float vec_min (vector float, vector float);
-vector signed short vec_mladd (vector signed short, vector signed short,
+vector float vec_vminfp (vector float, vector float);
+
+vector signed int vec_vminsw (vector bool int, vector signed int);
+vector signed int vec_vminsw (vector signed int, vector bool int);
+vector signed int vec_vminsw (vector signed int, vector signed int);
+
+vector unsigned int vec_vminuw (vector bool int, vector unsigned int);
+vector unsigned int vec_vminuw (vector unsigned int, vector bool int);
+vector unsigned int vec_vminuw (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vminsh (vector bool short, vector signed short);
+vector signed short vec_vminsh (vector signed short, vector bool short);
+vector signed short vec_vminsh (vector signed short,
+ vector signed short);
+
+vector unsigned short vec_vminuh (vector bool short,
+ vector unsigned short);
+vector unsigned short vec_vminuh (vector unsigned short,
+ vector bool short);
+vector unsigned short vec_vminuh (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vminsb (vector bool char, vector signed char);
+vector signed char vec_vminsb (vector signed char, vector bool char);
+vector signed char vec_vminsb (vector signed char, vector signed char);
+
+vector unsigned char vec_vminub (vector bool char,
+ vector unsigned char);
+vector unsigned char vec_vminub (vector unsigned char,
+ vector bool char);
+vector unsigned char vec_vminub (vector unsigned char,
+ vector unsigned char);
+
+vector signed short vec_mladd (vector signed short,
+ vector signed short,
vector signed short);
vector signed short vec_mladd (vector signed short,
vector unsigned short,
vector unsigned int vec_msum (vector unsigned char,
vector unsigned char,
vector unsigned int);
-vector signed int vec_msum (vector signed char, vector unsigned char,
+vector signed int vec_msum (vector signed char,
+ vector unsigned char,
vector signed int);
vector unsigned int vec_msum (vector unsigned short,
vector unsigned short,
vector unsigned int);
-vector signed int vec_msum (vector signed short, vector signed short,
+vector signed int vec_msum (vector signed short,
+ vector signed short,
vector signed int);
+vector signed int vec_vmsumshm (vector signed short,
+ vector signed short,
+ vector signed int);
+
+vector unsigned int vec_vmsumuhm (vector unsigned short,
+ vector unsigned short,
+ vector unsigned int);
+
+vector signed int vec_vmsummbm (vector signed char,
+ vector unsigned char,
+ vector signed int);
+
+vector unsigned int vec_vmsumubm (vector unsigned char,
+ vector unsigned char,
+ vector unsigned int);
+
vector unsigned int vec_msums (vector unsigned short,
vector unsigned short,
vector unsigned int);
-vector signed int vec_msums (vector signed short, vector signed short,
+vector signed int vec_msums (vector signed short,
+ vector signed short,
vector signed int);
+vector signed int vec_vmsumshs (vector signed short,
+ vector signed short,
+ vector signed int);
+
+vector unsigned int vec_vmsumuhs (vector unsigned short,
+ vector unsigned short,
+ vector unsigned int);
+
void vec_mtvscr (vector signed int);
void vec_mtvscr (vector unsigned int);
+void vec_mtvscr (vector bool int);
void vec_mtvscr (vector signed short);
void vec_mtvscr (vector unsigned short);
+void vec_mtvscr (vector bool short);
+void vec_mtvscr (vector pixel);
void vec_mtvscr (vector signed char);
void vec_mtvscr (vector unsigned char);
+void vec_mtvscr (vector bool char);
vector unsigned short vec_mule (vector unsigned char,
vector unsigned char);
-vector signed short vec_mule (vector signed char, vector signed char);
+vector signed short vec_mule (vector signed char,
+ vector signed char);
vector unsigned int vec_mule (vector unsigned short,
vector unsigned short);
vector signed int vec_mule (vector signed short, vector signed short);
+vector signed int vec_vmulesh (vector signed short,
+ vector signed short);
+
+vector unsigned int vec_vmuleuh (vector unsigned short,
+ vector unsigned short);
+
+vector signed short vec_vmulesb (vector signed char,
+ vector signed char);
+
+vector unsigned short vec_vmuleub (vector unsigned char,
+ vector unsigned char);
+
vector unsigned short vec_mulo (vector unsigned char,
vector unsigned char);
vector signed short vec_mulo (vector signed char, vector signed char);
vector unsigned short);
vector signed int vec_mulo (vector signed short, vector signed short);
+vector signed int vec_vmulosh (vector signed short,
+ vector signed short);
+
+vector unsigned int vec_vmulouh (vector unsigned short,
+ vector unsigned short);
+
+vector signed short vec_vmulosb (vector signed char,
+ vector signed char);
+
+vector unsigned short vec_vmuloub (vector unsigned char,
+ vector unsigned char);
+
vector float vec_nmsub (vector float, vector float, vector float);
vector float vec_nor (vector float, vector float);
vector signed int vec_nor (vector signed int, vector signed int);
vector unsigned int vec_nor (vector unsigned int, vector unsigned int);
+vector bool int vec_nor (vector bool int, vector bool int);
vector signed short vec_nor (vector signed short, vector signed short);
vector unsigned short vec_nor (vector unsigned short,
vector unsigned short);
+vector bool short vec_nor (vector bool short, vector bool short);
vector signed char vec_nor (vector signed char, vector signed char);
vector unsigned char vec_nor (vector unsigned char,
vector unsigned char);
+vector bool char vec_nor (vector bool char, vector bool char);
vector float vec_or (vector float, vector float);
-vector float vec_or (vector float, vector signed int);
-vector float vec_or (vector signed int, vector float);
+vector float vec_or (vector float, vector bool int);
+vector float vec_or (vector bool int, vector float);
+vector bool int vec_or (vector bool int, vector bool int);
+vector signed int vec_or (vector bool int, vector signed int);
+vector signed int vec_or (vector signed int, vector bool int);
vector signed int vec_or (vector signed int, vector signed int);
-vector unsigned int vec_or (vector signed int, vector unsigned int);
-vector unsigned int vec_or (vector unsigned int, vector signed int);
+vector unsigned int vec_or (vector bool int, vector unsigned int);
+vector unsigned int vec_or (vector unsigned int, vector bool int);
vector unsigned int vec_or (vector unsigned int, vector unsigned int);
+vector bool short vec_or (vector bool short, vector bool short);
+vector signed short vec_or (vector bool short, vector signed short);
+vector signed short vec_or (vector signed short, vector bool short);
vector signed short vec_or (vector signed short, vector signed short);
-vector unsigned short vec_or (vector signed short,
- vector unsigned short);
-vector unsigned short vec_or (vector unsigned short,
- vector signed short);
+vector unsigned short vec_or (vector bool short, vector unsigned short);
+vector unsigned short vec_or (vector unsigned short, vector bool short);
vector unsigned short vec_or (vector unsigned short,
vector unsigned short);
+vector signed char vec_or (vector bool char, vector signed char);
+vector bool char vec_or (vector bool char, vector bool char);
+vector signed char vec_or (vector signed char, vector bool char);
vector signed char vec_or (vector signed char, vector signed char);
-vector unsigned char vec_or (vector signed char, vector unsigned char);
-vector unsigned char vec_or (vector unsigned char, vector signed char);
+vector unsigned char vec_or (vector bool char, vector unsigned char);
+vector unsigned char vec_or (vector unsigned char, vector bool char);
vector unsigned char vec_or (vector unsigned char,
vector unsigned char);
vector signed char vec_pack (vector signed short, vector signed short);
vector unsigned char vec_pack (vector unsigned short,
vector unsigned short);
+vector bool char vec_pack (vector bool short, vector bool short);
vector signed short vec_pack (vector signed int, vector signed int);
vector unsigned short vec_pack (vector unsigned int,
vector unsigned int);
+vector bool short vec_pack (vector bool int, vector bool int);
-vector signed short vec_packpx (vector unsigned int,
- vector unsigned int);
+vector bool short vec_vpkuwum (vector bool int, vector bool int);
+vector signed short vec_vpkuwum (vector signed int, vector signed int);
+vector unsigned short vec_vpkuwum (vector unsigned int,
+ vector unsigned int);
+
+vector bool char vec_vpkuhum (vector bool short, vector bool short);
+vector signed char vec_vpkuhum (vector signed short,
+ vector signed short);
+vector unsigned char vec_vpkuhum (vector unsigned short,
+ vector unsigned short);
+
+vector pixel vec_packpx (vector unsigned int, vector unsigned int);
vector unsigned char vec_packs (vector unsigned short,
vector unsigned short);
vector signed char vec_packs (vector signed short, vector signed short);
-
vector unsigned short vec_packs (vector unsigned int,
vector unsigned int);
vector signed short vec_packs (vector signed int, vector signed int);
+vector signed short vec_vpkswss (vector signed int, vector signed int);
+
+vector unsigned short vec_vpkuwus (vector unsigned int,
+ vector unsigned int);
+
+vector signed char vec_vpkshss (vector signed short,
+ vector signed short);
+
+vector unsigned char vec_vpkuhus (vector unsigned short,
+ vector unsigned short);
+
vector unsigned char vec_packsu (vector unsigned short,
vector unsigned short);
vector unsigned char vec_packsu (vector signed short,
vector unsigned int);
vector unsigned short vec_packsu (vector signed int, vector signed int);
-vector float vec_perm (vector float, vector float,
+vector unsigned short vec_vpkswus (vector signed int,
+ vector signed int);
+
+vector unsigned char vec_vpkshus (vector signed short,
+ vector signed short);
+
+vector float vec_perm (vector float,
+ vector float,
vector unsigned char);
-vector signed int vec_perm (vector signed int, vector signed int,
+vector signed int vec_perm (vector signed int,
+ vector signed int,
vector unsigned char);
-vector unsigned int vec_perm (vector unsigned int, vector unsigned int,
+vector unsigned int vec_perm (vector unsigned int,
+ vector unsigned int,
vector unsigned char);
-vector signed short vec_perm (vector signed short, vector signed short,
+vector bool int vec_perm (vector bool int,
+ vector bool int,
+ vector unsigned char);
+vector signed short vec_perm (vector signed short,
+ vector signed short,
vector unsigned char);
vector unsigned short vec_perm (vector unsigned short,
vector unsigned short,
vector unsigned char);
-vector signed char vec_perm (vector signed char, vector signed char,
+vector bool short vec_perm (vector bool short,
+ vector bool short,
+ vector unsigned char);
+vector pixel vec_perm (vector pixel,
+ vector pixel,
+ vector unsigned char);
+vector signed char vec_perm (vector signed char,
+ vector signed char,
vector unsigned char);
vector unsigned char vec_perm (vector unsigned char,
vector unsigned char,
vector unsigned char);
+vector bool char vec_perm (vector bool char,
+ vector bool char,
+ vector unsigned char);
vector float vec_re (vector float);
-vector signed char vec_rl (vector signed char, vector unsigned char);
+vector signed char vec_rl (vector signed char,
+ vector unsigned char);
vector unsigned char vec_rl (vector unsigned char,
vector unsigned char);
vector signed short vec_rl (vector signed short, vector unsigned short);
-
vector unsigned short vec_rl (vector unsigned short,
vector unsigned short);
vector signed int vec_rl (vector signed int, vector unsigned int);
vector unsigned int vec_rl (vector unsigned int, vector unsigned int);
+vector signed int vec_vrlw (vector signed int, vector unsigned int);
+vector unsigned int vec_vrlw (vector unsigned int, vector unsigned int);
+
+vector signed short vec_vrlh (vector signed short,
+ vector unsigned short);
+vector unsigned short vec_vrlh (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vrlb (vector signed char, vector unsigned char);
+vector unsigned char vec_vrlb (vector unsigned char,
+ vector unsigned char);
+
vector float vec_round (vector float);
vector float vec_rsqrte (vector float);
-vector float vec_sel (vector float, vector float, vector signed int);
+vector float vec_sel (vector float, vector float, vector bool int);
vector float vec_sel (vector float, vector float, vector unsigned int);
-vector signed int vec_sel (vector signed int, vector signed int,
- vector signed int);
-vector signed int vec_sel (vector signed int, vector signed int,
+vector signed int vec_sel (vector signed int,
+ vector signed int,
+ vector bool int);
+vector signed int vec_sel (vector signed int,
+ vector signed int,
vector unsigned int);
-vector unsigned int vec_sel (vector unsigned int, vector unsigned int,
- vector signed int);
-vector unsigned int vec_sel (vector unsigned int, vector unsigned int,
+vector unsigned int vec_sel (vector unsigned int,
+ vector unsigned int,
+ vector bool int);
+vector unsigned int vec_sel (vector unsigned int,
+ vector unsigned int,
vector unsigned int);
-vector signed short vec_sel (vector signed short, vector signed short,
- vector signed short);
-vector signed short vec_sel (vector signed short, vector signed short,
+vector bool int vec_sel (vector bool int,
+ vector bool int,
+ vector bool int);
+vector bool int vec_sel (vector bool int,
+ vector bool int,
+ vector unsigned int);
+vector signed short vec_sel (vector signed short,
+ vector signed short,
+ vector bool short);
+vector signed short vec_sel (vector signed short,
+ vector signed short,
vector unsigned short);
vector unsigned short vec_sel (vector unsigned short,
vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_sel (vector unsigned short,
vector unsigned short,
vector unsigned short);
-vector signed char vec_sel (vector signed char, vector signed char,
- vector signed char);
-vector signed char vec_sel (vector signed char, vector signed char,
+vector bool short vec_sel (vector bool short,
+ vector bool short,
+ vector bool short);
+vector bool short vec_sel (vector bool short,
+ vector bool short,
+ vector unsigned short);
+vector signed char vec_sel (vector signed char,
+ vector signed char,
+ vector bool char);
+vector signed char vec_sel (vector signed char,
+ vector signed char,
vector unsigned char);
vector unsigned char vec_sel (vector unsigned char,
vector unsigned char,
- vector signed char);
+ vector bool char);
vector unsigned char vec_sel (vector unsigned char,
vector unsigned char,
vector unsigned char);
-
-vector signed char vec_sl (vector signed char, vector unsigned char);
+vector bool char vec_sel (vector bool char,
+ vector bool char,
+ vector bool char);
+vector bool char vec_sel (vector bool char,
+ vector bool char,
+ vector unsigned char);
+
+vector signed char vec_sl (vector signed char,
+ vector unsigned char);
vector unsigned char vec_sl (vector unsigned char,
vector unsigned char);
vector signed short vec_sl (vector signed short, vector unsigned short);
-
vector unsigned short vec_sl (vector unsigned short,
vector unsigned short);
vector signed int vec_sl (vector signed int, vector unsigned int);
vector unsigned int vec_sl (vector unsigned int, vector unsigned int);
-vector float vec_sld (vector float, vector float, const char);
-vector signed int vec_sld (vector signed int, vector signed int,
- const char);
-vector unsigned int vec_sld (vector unsigned int, vector unsigned int,
- const char);
-vector signed short vec_sld (vector signed short, vector signed short,
- const char);
+vector signed int vec_vslw (vector signed int, vector unsigned int);
+vector unsigned int vec_vslw (vector unsigned int, vector unsigned int);
+
+vector signed short vec_vslh (vector signed short,
+ vector unsigned short);
+vector unsigned short vec_vslh (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vslb (vector signed char, vector unsigned char);
+vector unsigned char vec_vslb (vector unsigned char,
+ vector unsigned char);
+
+vector float vec_sld (vector float, vector float, const int);
+vector signed int vec_sld (vector signed int,
+ vector signed int,
+ const int);
+vector unsigned int vec_sld (vector unsigned int,
+ vector unsigned int,
+ const int);
+vector bool int vec_sld (vector bool int,
+ vector bool int,
+ const int);
+vector signed short vec_sld (vector signed short,
+ vector signed short,
+ const int);
vector unsigned short vec_sld (vector unsigned short,
- vector unsigned short, const char);
-vector signed char vec_sld (vector signed char, vector signed char,
- const char);
+ vector unsigned short,
+ const int);
+vector bool short vec_sld (vector bool short,
+ vector bool short,
+ const int);
+vector pixel vec_sld (vector pixel,
+ vector pixel,
+ const int);
+vector signed char vec_sld (vector signed char,
+ vector signed char,
+ const int);
vector unsigned char vec_sld (vector unsigned char,
vector unsigned char,
- const char);
+ const int);
+vector bool char vec_sld (vector bool char,
+ vector bool char,
+ const int);
-vector signed int vec_sll (vector signed int, vector unsigned int);
-vector signed int vec_sll (vector signed int, vector unsigned short);
-vector signed int vec_sll (vector signed int, vector unsigned char);
-vector unsigned int vec_sll (vector unsigned int, vector unsigned int);
+vector signed int vec_sll (vector signed int,
+ vector unsigned int);
+vector signed int vec_sll (vector signed int,
+ vector unsigned short);
+vector signed int vec_sll (vector signed int,
+ vector unsigned char);
+vector unsigned int vec_sll (vector unsigned int,
+ vector unsigned int);
vector unsigned int vec_sll (vector unsigned int,
vector unsigned short);
-vector unsigned int vec_sll (vector unsigned int, vector unsigned char);
-
-vector signed short vec_sll (vector signed short, vector unsigned int);
+vector unsigned int vec_sll (vector unsigned int,
+ vector unsigned char);
+vector bool int vec_sll (vector bool int,
+ vector unsigned int);
+vector bool int vec_sll (vector bool int,
+ vector unsigned short);
+vector bool int vec_sll (vector bool int,
+ vector unsigned char);
+vector signed short vec_sll (vector signed short,
+ vector unsigned int);
vector signed short vec_sll (vector signed short,
vector unsigned short);
-vector signed short vec_sll (vector signed short, vector unsigned char);
-
+vector signed short vec_sll (vector signed short,
+ vector unsigned char);
vector unsigned short vec_sll (vector unsigned short,
vector unsigned int);
vector unsigned short vec_sll (vector unsigned short,
vector unsigned short);
vector unsigned short vec_sll (vector unsigned short,
vector unsigned char);
+vector bool short vec_sll (vector bool short, vector unsigned int);
+vector bool short vec_sll (vector bool short, vector unsigned short);
+vector bool short vec_sll (vector bool short, vector unsigned char);
+vector pixel vec_sll (vector pixel, vector unsigned int);
+vector pixel vec_sll (vector pixel, vector unsigned short);
+vector pixel vec_sll (vector pixel, vector unsigned char);
vector signed char vec_sll (vector signed char, vector unsigned int);
vector signed char vec_sll (vector signed char, vector unsigned short);
vector signed char vec_sll (vector signed char, vector unsigned char);
vector unsigned short);
vector unsigned char vec_sll (vector unsigned char,
vector unsigned char);
+vector bool char vec_sll (vector bool char, vector unsigned int);
+vector bool char vec_sll (vector bool char, vector unsigned short);
+vector bool char vec_sll (vector bool char, vector unsigned char);
vector float vec_slo (vector float, vector signed char);
vector float vec_slo (vector float, vector unsigned char);
vector signed int vec_slo (vector signed int, vector unsigned char);
vector unsigned int vec_slo (vector unsigned int, vector signed char);
vector unsigned int vec_slo (vector unsigned int, vector unsigned char);
-
vector signed short vec_slo (vector signed short, vector signed char);
vector signed short vec_slo (vector signed short, vector unsigned char);
-
vector unsigned short vec_slo (vector unsigned short,
vector signed char);
vector unsigned short vec_slo (vector unsigned short,
vector unsigned char);
+vector pixel vec_slo (vector pixel, vector signed char);
+vector pixel vec_slo (vector pixel, vector unsigned char);
vector signed char vec_slo (vector signed char, vector signed char);
vector signed char vec_slo (vector signed char, vector unsigned char);
vector unsigned char vec_slo (vector unsigned char, vector signed char);
-
vector unsigned char vec_slo (vector unsigned char,
vector unsigned char);
-vector signed char vec_splat (vector signed char, const char);
-vector unsigned char vec_splat (vector unsigned char, const char);
-vector signed short vec_splat (vector signed short, const char);
-vector unsigned short vec_splat (vector unsigned short, const char);
-vector float vec_splat (vector float, const char);
-vector signed int vec_splat (vector signed int, const char);
-vector unsigned int vec_splat (vector unsigned int, const char);
+vector signed char vec_splat (vector signed char, const int);
+vector unsigned char vec_splat (vector unsigned char, const int);
+vector bool char vec_splat (vector bool char, const int);
+vector signed short vec_splat (vector signed short, const int);
+vector unsigned short vec_splat (vector unsigned short, const int);
+vector bool short vec_splat (vector bool short, const int);
+vector pixel vec_splat (vector pixel, const int);
+vector float vec_splat (vector float, const int);
+vector signed int vec_splat (vector signed int, const int);
+vector unsigned int vec_splat (vector unsigned int, const int);
+vector bool int vec_splat (vector bool int, const int);
+
+vector float vec_vspltw (vector float, const int);
+vector signed int vec_vspltw (vector signed int, const int);
+vector unsigned int vec_vspltw (vector unsigned int, const int);
+vector bool int vec_vspltw (vector bool int, const int);
+
+vector bool short vec_vsplth (vector bool short, const int);
+vector signed short vec_vsplth (vector signed short, const int);
+vector unsigned short vec_vsplth (vector unsigned short, const int);
+vector pixel vec_vsplth (vector pixel, const int);
-vector signed char vec_splat_s8 (const char);
+vector signed char vec_vspltb (vector signed char, const int);
+vector unsigned char vec_vspltb (vector unsigned char, const int);
+vector bool char vec_vspltb (vector bool char, const int);
-vector signed short vec_splat_s16 (const char);
+vector signed char vec_splat_s8 (const int);
-vector signed int vec_splat_s32 (const char);
+vector signed short vec_splat_s16 (const int);
-vector unsigned char vec_splat_u8 (const char);
+vector signed int vec_splat_s32 (const int);
-vector unsigned short vec_splat_u16 (const char);
+vector unsigned char vec_splat_u8 (const int);
-vector unsigned int vec_splat_u32 (const char);
+vector unsigned short vec_splat_u16 (const int);
+
+vector unsigned int vec_splat_u32 (const int);
vector signed char vec_sr (vector signed char, vector unsigned char);
vector unsigned char vec_sr (vector unsigned char,
vector unsigned char);
-vector signed short vec_sr (vector signed short, vector unsigned short);
-
+vector signed short vec_sr (vector signed short,
+ vector unsigned short);
vector unsigned short vec_sr (vector unsigned short,
vector unsigned short);
vector signed int vec_sr (vector signed int, vector unsigned int);
vector unsigned int vec_sr (vector unsigned int, vector unsigned int);
+vector signed int vec_vsrw (vector signed int, vector unsigned int);
+vector unsigned int vec_vsrw (vector unsigned int, vector unsigned int);
+
+vector signed short vec_vsrh (vector signed short,
+ vector unsigned short);
+vector unsigned short vec_vsrh (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vsrb (vector signed char, vector unsigned char);
+vector unsigned char vec_vsrb (vector unsigned char,
+ vector unsigned char);
+
vector signed char vec_sra (vector signed char, vector unsigned char);
vector unsigned char vec_sra (vector unsigned char,
vector unsigned char);
vector signed int vec_sra (vector signed int, vector unsigned int);
vector unsigned int vec_sra (vector unsigned int, vector unsigned int);
+vector signed int vec_vsraw (vector signed int, vector unsigned int);
+vector unsigned int vec_vsraw (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vsrah (vector signed short,
+ vector unsigned short);
+vector unsigned short vec_vsrah (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vsrab (vector signed char, vector unsigned char);
+vector unsigned char vec_vsrab (vector unsigned char,
+ vector unsigned char);
+
vector signed int vec_srl (vector signed int, vector unsigned int);
vector signed int vec_srl (vector signed int, vector unsigned short);
vector signed int vec_srl (vector signed int, vector unsigned char);
vector unsigned int vec_srl (vector unsigned int,
vector unsigned short);
vector unsigned int vec_srl (vector unsigned int, vector unsigned char);
-
+vector bool int vec_srl (vector bool int, vector unsigned int);
+vector bool int vec_srl (vector bool int, vector unsigned short);
+vector bool int vec_srl (vector bool int, vector unsigned char);
vector signed short vec_srl (vector signed short, vector unsigned int);
vector signed short vec_srl (vector signed short,
vector unsigned short);
vector signed short vec_srl (vector signed short, vector unsigned char);
-
vector unsigned short vec_srl (vector unsigned short,
vector unsigned int);
vector unsigned short vec_srl (vector unsigned short,
vector unsigned short);
vector unsigned short vec_srl (vector unsigned short,
vector unsigned char);
+vector bool short vec_srl (vector bool short, vector unsigned int);
+vector bool short vec_srl (vector bool short, vector unsigned short);
+vector bool short vec_srl (vector bool short, vector unsigned char);
+vector pixel vec_srl (vector pixel, vector unsigned int);
+vector pixel vec_srl (vector pixel, vector unsigned short);
+vector pixel vec_srl (vector pixel, vector unsigned char);
vector signed char vec_srl (vector signed char, vector unsigned int);
vector signed char vec_srl (vector signed char, vector unsigned short);
vector signed char vec_srl (vector signed char, vector unsigned char);
vector unsigned short);
vector unsigned char vec_srl (vector unsigned char,
vector unsigned char);
+vector bool char vec_srl (vector bool char, vector unsigned int);
+vector bool char vec_srl (vector bool char, vector unsigned short);
+vector bool char vec_srl (vector bool char, vector unsigned char);
vector float vec_sro (vector float, vector signed char);
vector float vec_sro (vector float, vector unsigned char);
vector signed int vec_sro (vector signed int, vector unsigned char);
vector unsigned int vec_sro (vector unsigned int, vector signed char);
vector unsigned int vec_sro (vector unsigned int, vector unsigned char);
-
vector signed short vec_sro (vector signed short, vector signed char);
vector signed short vec_sro (vector signed short, vector unsigned char);
-
vector unsigned short vec_sro (vector unsigned short,
vector signed char);
vector unsigned short vec_sro (vector unsigned short,
vector unsigned char);
+vector pixel vec_sro (vector pixel, vector signed char);
+vector pixel vec_sro (vector pixel, vector unsigned char);
vector signed char vec_sro (vector signed char, vector signed char);
vector signed char vec_sro (vector signed char, vector unsigned char);
vector unsigned char vec_sro (vector unsigned char, vector signed char);
-
vector unsigned char vec_sro (vector unsigned char,
vector unsigned char);
-void vec_st (vector float, int, float *);
void vec_st (vector float, int, vector float *);
+void vec_st (vector float, int, float *);
+void vec_st (vector signed int, int, vector signed int *);
void vec_st (vector signed int, int, int *);
-void vec_st (vector signed int, int, unsigned int *);
-void vec_st (vector unsigned int, int, unsigned int *);
void vec_st (vector unsigned int, int, vector unsigned int *);
-void vec_st (vector signed short, int, short *);
-void vec_st (vector signed short, int, vector unsigned short *);
+void vec_st (vector unsigned int, int, unsigned int *);
+void vec_st (vector bool int, int, vector bool int *);
+void vec_st (vector bool int, int, unsigned int *);
+void vec_st (vector bool int, int, int *);
void vec_st (vector signed short, int, vector signed short *);
-void vec_st (vector unsigned short, int, unsigned short *);
+void vec_st (vector signed short, int, short *);
void vec_st (vector unsigned short, int, vector unsigned short *);
-void vec_st (vector signed char, int, signed char *);
-void vec_st (vector signed char, int, unsigned char *);
+void vec_st (vector unsigned short, int, unsigned short *);
+void vec_st (vector bool short, int, vector bool short *);
+void vec_st (vector bool short, int, unsigned short *);
+void vec_st (vector pixel, int, vector pixel *);
+void vec_st (vector pixel, int, unsigned short *);
+void vec_st (vector pixel, int, short *);
+void vec_st (vector bool short, int, short *);
void vec_st (vector signed char, int, vector signed char *);
-void vec_st (vector unsigned char, int, unsigned char *);
+void vec_st (vector signed char, int, signed char *);
void vec_st (vector unsigned char, int, vector unsigned char *);
+void vec_st (vector unsigned char, int, unsigned char *);
+void vec_st (vector bool char, int, vector bool char *);
+void vec_st (vector bool char, int, unsigned char *);
+void vec_st (vector bool char, int, signed char *);
-void vec_ste (vector signed char, int, unsigned char *);
void vec_ste (vector signed char, int, signed char *);
void vec_ste (vector unsigned char, int, unsigned char *);
+void vec_ste (vector bool char, int, signed char *);
+void vec_ste (vector bool char, int, unsigned char *);
void vec_ste (vector signed short, int, short *);
-void vec_ste (vector signed short, int, unsigned short *);
-void vec_ste (vector unsigned short, int, void *);
-void vec_ste (vector signed int, int, unsigned int *);
+void vec_ste (vector unsigned short, int, unsigned short *);
+void vec_ste (vector bool short, int, short *);
+void vec_ste (vector bool short, int, unsigned short *);
+void vec_ste (vector pixel, int, short *);
+void vec_ste (vector pixel, int, unsigned short *);
+void vec_ste (vector float, int, float *);
void vec_ste (vector signed int, int, int *);
void vec_ste (vector unsigned int, int, unsigned int *);
-void vec_ste (vector float, int, float *);
+void vec_ste (vector bool int, int, int *);
+void vec_ste (vector bool int, int, unsigned int *);
+
+void vec_stvewx (vector float, int, float *);
+void vec_stvewx (vector signed int, int, int *);
+void vec_stvewx (vector unsigned int, int, unsigned int *);
+void vec_stvewx (vector bool int, int, int *);
+void vec_stvewx (vector bool int, int, unsigned int *);
+
+void vec_stvehx (vector signed short, int, short *);
+void vec_stvehx (vector unsigned short, int, unsigned short *);
+void vec_stvehx (vector bool short, int, short *);
+void vec_stvehx (vector bool short, int, unsigned short *);
+void vec_stvehx (vector pixel, int, short *);
+void vec_stvehx (vector pixel, int, unsigned short *);
+
+void vec_stvebx (vector signed char, int, signed char *);
+void vec_stvebx (vector unsigned char, int, unsigned char *);
+void vec_stvebx (vector bool char, int, signed char *);
+void vec_stvebx (vector bool char, int, unsigned char *);
void vec_stl (vector float, int, vector float *);
void vec_stl (vector float, int, float *);
void vec_stl (vector signed int, int, vector signed int *);
void vec_stl (vector signed int, int, int *);
-void vec_stl (vector signed int, int, unsigned int *);
void vec_stl (vector unsigned int, int, vector unsigned int *);
void vec_stl (vector unsigned int, int, unsigned int *);
-void vec_stl (vector signed short, int, short *);
-void vec_stl (vector signed short, int, unsigned short *);
+void vec_stl (vector bool int, int, vector bool int *);
+void vec_stl (vector bool int, int, unsigned int *);
+void vec_stl (vector bool int, int, int *);
void vec_stl (vector signed short, int, vector signed short *);
+void vec_stl (vector signed short, int, short *);
+void vec_stl (vector unsigned short, int, vector unsigned short *);
void vec_stl (vector unsigned short, int, unsigned short *);
-void vec_stl (vector unsigned short, int, vector signed short *);
-void vec_stl (vector signed char, int, signed char *);
-void vec_stl (vector signed char, int, unsigned char *);
+void vec_stl (vector bool short, int, vector bool short *);
+void vec_stl (vector bool short, int, unsigned short *);
+void vec_stl (vector bool short, int, short *);
+void vec_stl (vector pixel, int, vector pixel *);
+void vec_stl (vector pixel, int, unsigned short *);
+void vec_stl (vector pixel, int, short *);
void vec_stl (vector signed char, int, vector signed char *);
-void vec_stl (vector unsigned char, int, unsigned char *);
+void vec_stl (vector signed char, int, signed char *);
void vec_stl (vector unsigned char, int, vector unsigned char *);
+void vec_stl (vector unsigned char, int, unsigned char *);
+void vec_stl (vector bool char, int, vector bool char *);
+void vec_stl (vector bool char, int, unsigned char *);
+void vec_stl (vector bool char, int, signed char *);
+vector signed char vec_sub (vector bool char, vector signed char);
+vector signed char vec_sub (vector signed char, vector bool char);
vector signed char vec_sub (vector signed char, vector signed char);
-vector unsigned char vec_sub (vector signed char, vector unsigned char);
-
-vector unsigned char vec_sub (vector unsigned char, vector signed char);
-
+vector unsigned char vec_sub (vector bool char, vector unsigned char);
+vector unsigned char vec_sub (vector unsigned char, vector bool char);
vector unsigned char vec_sub (vector unsigned char,
vector unsigned char);
+vector signed short vec_sub (vector bool short, vector signed short);
+vector signed short vec_sub (vector signed short, vector bool short);
vector signed short vec_sub (vector signed short, vector signed short);
-vector unsigned short vec_sub (vector signed short,
+vector unsigned short vec_sub (vector bool short,
vector unsigned short);
vector unsigned short vec_sub (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_sub (vector unsigned short,
vector unsigned short);
+vector signed int vec_sub (vector bool int, vector signed int);
+vector signed int vec_sub (vector signed int, vector bool int);
vector signed int vec_sub (vector signed int, vector signed int);
-vector unsigned int vec_sub (vector signed int, vector unsigned int);
-vector unsigned int vec_sub (vector unsigned int, vector signed int);
+vector unsigned int vec_sub (vector bool int, vector unsigned int);
+vector unsigned int vec_sub (vector unsigned int, vector bool int);
vector unsigned int vec_sub (vector unsigned int, vector unsigned int);
vector float vec_sub (vector float, vector float);
+vector float vec_vsubfp (vector float, vector float);
+
+vector signed int vec_vsubuwm (vector bool int, vector signed int);
+vector signed int vec_vsubuwm (vector signed int, vector bool int);
+vector signed int vec_vsubuwm (vector signed int, vector signed int);
+vector unsigned int vec_vsubuwm (vector bool int, vector unsigned int);
+vector unsigned int vec_vsubuwm (vector unsigned int, vector bool int);
+vector unsigned int vec_vsubuwm (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vsubuhm (vector bool short,
+ vector signed short);
+vector signed short vec_vsubuhm (vector signed short,
+ vector bool short);
+vector signed short vec_vsubuhm (vector signed short,
+ vector signed short);
+vector unsigned short vec_vsubuhm (vector bool short,
+ vector unsigned short);
+vector unsigned short vec_vsubuhm (vector unsigned short,
+ vector bool short);
+vector unsigned short vec_vsubuhm (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vsububm (vector bool char, vector signed char);
+vector signed char vec_vsububm (vector signed char, vector bool char);
+vector signed char vec_vsububm (vector signed char, vector signed char);
+vector unsigned char vec_vsububm (vector bool char,
+ vector unsigned char);
+vector unsigned char vec_vsububm (vector unsigned char,
+ vector bool char);
+vector unsigned char vec_vsububm (vector unsigned char,
+ vector unsigned char);
+
vector unsigned int vec_subc (vector unsigned int, vector unsigned int);
-vector unsigned char vec_subs (vector signed char,
- vector unsigned char);
-vector unsigned char vec_subs (vector unsigned char,
- vector signed char);
+vector unsigned char vec_subs (vector bool char, vector unsigned char);
+vector unsigned char vec_subs (vector unsigned char, vector bool char);
vector unsigned char vec_subs (vector unsigned char,
vector unsigned char);
+vector signed char vec_subs (vector bool char, vector signed char);
+vector signed char vec_subs (vector signed char, vector bool char);
vector signed char vec_subs (vector signed char, vector signed char);
-vector unsigned short vec_subs (vector signed short,
+vector unsigned short vec_subs (vector bool short,
vector unsigned short);
vector unsigned short vec_subs (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_subs (vector unsigned short,
vector unsigned short);
+vector signed short vec_subs (vector bool short, vector signed short);
+vector signed short vec_subs (vector signed short, vector bool short);
vector signed short vec_subs (vector signed short, vector signed short);
-
-vector unsigned int vec_subs (vector signed int, vector unsigned int);
-vector unsigned int vec_subs (vector unsigned int, vector signed int);
+vector unsigned int vec_subs (vector bool int, vector unsigned int);
+vector unsigned int vec_subs (vector unsigned int, vector bool int);
vector unsigned int vec_subs (vector unsigned int, vector unsigned int);
-
+vector signed int vec_subs (vector bool int, vector signed int);
+vector signed int vec_subs (vector signed int, vector bool int);
vector signed int vec_subs (vector signed int, vector signed int);
+vector signed int vec_vsubsws (vector bool int, vector signed int);
+vector signed int vec_vsubsws (vector signed int, vector bool int);
+vector signed int vec_vsubsws (vector signed int, vector signed int);
+
+vector unsigned int vec_vsubuws (vector bool int, vector unsigned int);
+vector unsigned int vec_vsubuws (vector unsigned int, vector bool int);
+vector unsigned int vec_vsubuws (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vsubshs (vector bool short,
+ vector signed short);
+vector signed short vec_vsubshs (vector signed short,
+ vector bool short);
+vector signed short vec_vsubshs (vector signed short,
+ vector signed short);
+
+vector unsigned short vec_vsubuhs (vector bool short,
+ vector unsigned short);
+vector unsigned short vec_vsubuhs (vector unsigned short,
+ vector bool short);
+vector unsigned short vec_vsubuhs (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vsubsbs (vector bool char, vector signed char);
+vector signed char vec_vsubsbs (vector signed char, vector bool char);
+vector signed char vec_vsubsbs (vector signed char, vector signed char);
+
+vector unsigned char vec_vsububs (vector bool char,
+ vector unsigned char);
+vector unsigned char vec_vsububs (vector unsigned char,
+ vector bool char);
+vector unsigned char vec_vsububs (vector unsigned char,
+ vector unsigned char);
+
vector unsigned int vec_sum4s (vector unsigned char,
vector unsigned int);
vector signed int vec_sum4s (vector signed char, vector signed int);
vector signed int vec_sum4s (vector signed short, vector signed int);
+vector signed int vec_vsum4shs (vector signed short, vector signed int);
+
+vector signed int vec_vsum4sbs (vector signed char, vector signed int);
+
+vector unsigned int vec_vsum4ubs (vector unsigned char,
+ vector unsigned int);
+
vector signed int vec_sum2s (vector signed int, vector signed int);
vector signed int vec_sums (vector signed int, vector signed int);
vector float vec_trunc (vector float);
vector signed short vec_unpackh (vector signed char);
-vector unsigned int vec_unpackh (vector signed short);
+vector bool short vec_unpackh (vector bool char);
vector signed int vec_unpackh (vector signed short);
+vector bool int vec_unpackh (vector bool short);
+vector unsigned int vec_unpackh (vector pixel);
+
+vector bool int vec_vupkhsh (vector bool short);
+vector signed int vec_vupkhsh (vector signed short);
+
+vector unsigned int vec_vupkhpx (vector pixel);
+
+vector bool short vec_vupkhsb (vector bool char);
+vector signed short vec_vupkhsb (vector signed char);
vector signed short vec_unpackl (vector signed char);
-vector unsigned int vec_unpackl (vector signed short);
+vector bool short vec_unpackl (vector bool char);
+vector unsigned int vec_unpackl (vector pixel);
vector signed int vec_unpackl (vector signed short);
+vector bool int vec_unpackl (vector bool short);
+
+vector unsigned int vec_vupklpx (vector pixel);
+
+vector bool int vec_vupklsh (vector bool short);
+vector signed int vec_vupklsh (vector signed short);
+
+vector bool short vec_vupklsb (vector bool char);
+vector signed short vec_vupklsb (vector signed char);
vector float vec_xor (vector float, vector float);
-vector float vec_xor (vector float, vector signed int);
-vector float vec_xor (vector signed int, vector float);
+vector float vec_xor (vector float, vector bool int);
+vector float vec_xor (vector bool int, vector float);
+vector bool int vec_xor (vector bool int, vector bool int);
+vector signed int vec_xor (vector bool int, vector signed int);
+vector signed int vec_xor (vector signed int, vector bool int);
vector signed int vec_xor (vector signed int, vector signed int);
-vector unsigned int vec_xor (vector signed int, vector unsigned int);
-vector unsigned int vec_xor (vector unsigned int, vector signed int);
+vector unsigned int vec_xor (vector bool int, vector unsigned int);
+vector unsigned int vec_xor (vector unsigned int, vector bool int);
vector unsigned int vec_xor (vector unsigned int, vector unsigned int);
+vector bool short vec_xor (vector bool short, vector bool short);
+vector signed short vec_xor (vector bool short, vector signed short);
+vector signed short vec_xor (vector signed short, vector bool short);
vector signed short vec_xor (vector signed short, vector signed short);
-vector unsigned short vec_xor (vector signed short,
+vector unsigned short vec_xor (vector bool short,
vector unsigned short);
vector unsigned short vec_xor (vector unsigned short,
- vector signed short);
+ vector bool short);
vector unsigned short vec_xor (vector unsigned short,
vector unsigned short);
+vector signed char vec_xor (vector bool char, vector signed char);
+vector bool char vec_xor (vector bool char, vector bool char);
+vector signed char vec_xor (vector signed char, vector bool char);
vector signed char vec_xor (vector signed char, vector signed char);
-vector unsigned char vec_xor (vector signed char, vector unsigned char);
-
-vector unsigned char vec_xor (vector unsigned char, vector signed char);
-
+vector unsigned char vec_xor (vector bool char, vector unsigned char);
+vector unsigned char vec_xor (vector unsigned char, vector bool char);
vector unsigned char vec_xor (vector unsigned char,
vector unsigned char);
-vector signed int vec_all_eq (vector signed char, vector unsigned char);
-
-vector signed int vec_all_eq (vector signed char, vector signed char);
-vector signed int vec_all_eq (vector unsigned char, vector signed char);
-
-vector signed int vec_all_eq (vector unsigned char,
- vector unsigned char);
-vector signed int vec_all_eq (vector signed short,
- vector unsigned short);
-vector signed int vec_all_eq (vector signed short, vector signed short);
-
-vector signed int vec_all_eq (vector unsigned short,
- vector signed short);
-vector signed int vec_all_eq (vector unsigned short,
- vector unsigned short);
-vector signed int vec_all_eq (vector signed int, vector unsigned int);
-vector signed int vec_all_eq (vector signed int, vector signed int);
-vector signed int vec_all_eq (vector unsigned int, vector signed int);
-vector signed int vec_all_eq (vector unsigned int, vector unsigned int);
-
-vector signed int vec_all_eq (vector float, vector float);
-
-vector signed int vec_all_ge (vector signed char, vector unsigned char);
-
-vector signed int vec_all_ge (vector unsigned char, vector signed char);
-
-vector signed int vec_all_ge (vector unsigned char,
- vector unsigned char);
-vector signed int vec_all_ge (vector signed char, vector signed char);
-vector signed int vec_all_ge (vector signed short,
- vector unsigned short);
-vector signed int vec_all_ge (vector unsigned short,
- vector signed short);
-vector signed int vec_all_ge (vector unsigned short,
- vector unsigned short);
-vector signed int vec_all_ge (vector signed short, vector signed short);
-
-vector signed int vec_all_ge (vector signed int, vector unsigned int);
-vector signed int vec_all_ge (vector unsigned int, vector signed int);
-vector signed int vec_all_ge (vector unsigned int, vector unsigned int);
-
-vector signed int vec_all_ge (vector signed int, vector signed int);
-vector signed int vec_all_ge (vector float, vector float);
-
-vector signed int vec_all_gt (vector signed char, vector unsigned char);
-
-vector signed int vec_all_gt (vector unsigned char, vector signed char);
-
-vector signed int vec_all_gt (vector unsigned char,
- vector unsigned char);
-vector signed int vec_all_gt (vector signed char, vector signed char);
-vector signed int vec_all_gt (vector signed short,
- vector unsigned short);
-vector signed int vec_all_gt (vector unsigned short,
- vector signed short);
-vector signed int vec_all_gt (vector unsigned short,
- vector unsigned short);
-vector signed int vec_all_gt (vector signed short, vector signed short);
-
-vector signed int vec_all_gt (vector signed int, vector unsigned int);
-vector signed int vec_all_gt (vector unsigned int, vector signed int);
-vector signed int vec_all_gt (vector unsigned int, vector unsigned int);
-
-vector signed int vec_all_gt (vector signed int, vector signed int);
-vector signed int vec_all_gt (vector float, vector float);
-
-vector signed int vec_all_in (vector float, vector float);
-
-vector signed int vec_all_le (vector signed char, vector unsigned char);
-
-vector signed int vec_all_le (vector unsigned char, vector signed char);
-
-vector signed int vec_all_le (vector unsigned char,
- vector unsigned char);
-vector signed int vec_all_le (vector signed char, vector signed char);
-vector signed int vec_all_le (vector signed short,
- vector unsigned short);
-vector signed int vec_all_le (vector unsigned short,
- vector signed short);
-vector signed int vec_all_le (vector unsigned short,
- vector unsigned short);
-vector signed int vec_all_le (vector signed short, vector signed short);
-
-vector signed int vec_all_le (vector signed int, vector unsigned int);
-vector signed int vec_all_le (vector unsigned int, vector signed int);
-vector signed int vec_all_le (vector unsigned int, vector unsigned int);
-
-vector signed int vec_all_le (vector signed int, vector signed int);
-vector signed int vec_all_le (vector float, vector float);
-
-vector signed int vec_all_lt (vector signed char, vector unsigned char);
-
-vector signed int vec_all_lt (vector unsigned char, vector signed char);
-
-vector signed int vec_all_lt (vector unsigned char,
- vector unsigned char);
-vector signed int vec_all_lt (vector signed char, vector signed char);
-vector signed int vec_all_lt (vector signed short,
- vector unsigned short);
-vector signed int vec_all_lt (vector unsigned short,
- vector signed short);
-vector signed int vec_all_lt (vector unsigned short,
- vector unsigned short);
-vector signed int vec_all_lt (vector signed short, vector signed short);
-
-vector signed int vec_all_lt (vector signed int, vector unsigned int);
-vector signed int vec_all_lt (vector unsigned int, vector signed int);
-vector signed int vec_all_lt (vector unsigned int, vector unsigned int);
-
-vector signed int vec_all_lt (vector signed int, vector signed int);
-vector signed int vec_all_lt (vector float, vector float);
-
-vector signed int vec_all_nan (vector float);
-
-vector signed int vec_all_ne (vector signed char, vector unsigned char);
-
-vector signed int vec_all_ne (vector signed char, vector signed char);
-vector signed int vec_all_ne (vector unsigned char, vector signed char);
-
-vector signed int vec_all_ne (vector unsigned char,
- vector unsigned char);
-vector signed int vec_all_ne (vector signed short,
- vector unsigned short);
-vector signed int vec_all_ne (vector signed short, vector signed short);
-
-vector signed int vec_all_ne (vector unsigned short,
- vector signed short);
-vector signed int vec_all_ne (vector unsigned short,
- vector unsigned short);
-vector signed int vec_all_ne (vector signed int, vector unsigned int);
-vector signed int vec_all_ne (vector signed int, vector signed int);
-vector signed int vec_all_ne (vector unsigned int, vector signed int);
-vector signed int vec_all_ne (vector unsigned int, vector unsigned int);
-
-vector signed int vec_all_ne (vector float, vector float);
-
-vector signed int vec_all_nge (vector float, vector float);
-
-vector signed int vec_all_ngt (vector float, vector float);
-
-vector signed int vec_all_nle (vector float, vector float);
-
-vector signed int vec_all_nlt (vector float, vector float);
-
-vector signed int vec_all_numeric (vector float);
-
-vector signed int vec_any_eq (vector signed char, vector unsigned char);
-
-vector signed int vec_any_eq (vector signed char, vector signed char);
-vector signed int vec_any_eq (vector unsigned char, vector signed char);
-
-vector signed int vec_any_eq (vector unsigned char,
- vector unsigned char);
-vector signed int vec_any_eq (vector signed short,
- vector unsigned short);
-vector signed int vec_any_eq (vector signed short, vector signed short);
-
-vector signed int vec_any_eq (vector unsigned short,
- vector signed short);
-vector signed int vec_any_eq (vector unsigned short,
- vector unsigned short);
-vector signed int vec_any_eq (vector signed int, vector unsigned int);
-vector signed int vec_any_eq (vector signed int, vector signed int);
-vector signed int vec_any_eq (vector unsigned int, vector signed int);
-vector signed int vec_any_eq (vector unsigned int, vector unsigned int);
-
-vector signed int vec_any_eq (vector float, vector float);
-
-vector signed int vec_any_ge (vector signed char, vector unsigned char);
-
-vector signed int vec_any_ge (vector unsigned char, vector signed char);
-
-vector signed int vec_any_ge (vector unsigned char,
- vector unsigned char);
-vector signed int vec_any_ge (vector signed char, vector signed char);
-vector signed int vec_any_ge (vector signed short,
- vector unsigned short);
-vector signed int vec_any_ge (vector unsigned short,
- vector signed short);
-vector signed int vec_any_ge (vector unsigned short,
- vector unsigned short);
-vector signed int vec_any_ge (vector signed short, vector signed short);
-
-vector signed int vec_any_ge (vector signed int, vector unsigned int);
-vector signed int vec_any_ge (vector unsigned int, vector signed int);
-vector signed int vec_any_ge (vector unsigned int, vector unsigned int);
-
-vector signed int vec_any_ge (vector signed int, vector signed int);
-vector signed int vec_any_ge (vector float, vector float);
-
-vector signed int vec_any_gt (vector signed char, vector unsigned char);
-
-vector signed int vec_any_gt (vector unsigned char, vector signed char);
-
-vector signed int vec_any_gt (vector unsigned char,
- vector unsigned char);
-vector signed int vec_any_gt (vector signed char, vector signed char);
-vector signed int vec_any_gt (vector signed short,
- vector unsigned short);
-vector signed int vec_any_gt (vector unsigned short,
- vector signed short);
-vector signed int vec_any_gt (vector unsigned short,
- vector unsigned short);
-vector signed int vec_any_gt (vector signed short, vector signed short);
-
-vector signed int vec_any_gt (vector signed int, vector unsigned int);
-vector signed int vec_any_gt (vector unsigned int, vector signed int);
-vector signed int vec_any_gt (vector unsigned int, vector unsigned int);
-
-vector signed int vec_any_gt (vector signed int, vector signed int);
-vector signed int vec_any_gt (vector float, vector float);
-
-vector signed int vec_any_le (vector signed char, vector unsigned char);
-
-vector signed int vec_any_le (vector unsigned char, vector signed char);
-
-vector signed int vec_any_le (vector unsigned char,
- vector unsigned char);
-vector signed int vec_any_le (vector signed char, vector signed char);
-vector signed int vec_any_le (vector signed short,
- vector unsigned short);
-vector signed int vec_any_le (vector unsigned short,
- vector signed short);
-vector signed int vec_any_le (vector unsigned short,
- vector unsigned short);
-vector signed int vec_any_le (vector signed short, vector signed short);
-
-vector signed int vec_any_le (vector signed int, vector unsigned int);
-vector signed int vec_any_le (vector unsigned int, vector signed int);
-vector signed int vec_any_le (vector unsigned int, vector unsigned int);
-
-vector signed int vec_any_le (vector signed int, vector signed int);
-vector signed int vec_any_le (vector float, vector float);
-
-vector signed int vec_any_lt (vector signed char, vector unsigned char);
-
-vector signed int vec_any_lt (vector unsigned char, vector signed char);
-
-vector signed int vec_any_lt (vector unsigned char,
- vector unsigned char);
-vector signed int vec_any_lt (vector signed char, vector signed char);
-vector signed int vec_any_lt (vector signed short,
- vector unsigned short);
-vector signed int vec_any_lt (vector unsigned short,
- vector signed short);
-vector signed int vec_any_lt (vector unsigned short,
- vector unsigned short);
-vector signed int vec_any_lt (vector signed short, vector signed short);
-
-vector signed int vec_any_lt (vector signed int, vector unsigned int);
-vector signed int vec_any_lt (vector unsigned int, vector signed int);
-vector signed int vec_any_lt (vector unsigned int, vector unsigned int);
-
-vector signed int vec_any_lt (vector signed int, vector signed int);
-vector signed int vec_any_lt (vector float, vector float);
-
-vector signed int vec_any_nan (vector float);
-
-vector signed int vec_any_ne (vector signed char, vector unsigned char);
-
-vector signed int vec_any_ne (vector signed char, vector signed char);
-vector signed int vec_any_ne (vector unsigned char, vector signed char);
-
-vector signed int vec_any_ne (vector unsigned char,
- vector unsigned char);
-vector signed int vec_any_ne (vector signed short,
- vector unsigned short);
-vector signed int vec_any_ne (vector signed short, vector signed short);
+int vec_all_eq (vector signed char, vector bool char);
+int vec_all_eq (vector signed char, vector signed char);
+int vec_all_eq (vector unsigned char, vector bool char);
+int vec_all_eq (vector unsigned char, vector unsigned char);
+int vec_all_eq (vector bool char, vector bool char);
+int vec_all_eq (vector bool char, vector unsigned char);
+int vec_all_eq (vector bool char, vector signed char);
+int vec_all_eq (vector signed short, vector bool short);
+int vec_all_eq (vector signed short, vector signed short);
+int vec_all_eq (vector unsigned short, vector bool short);
+int vec_all_eq (vector unsigned short, vector unsigned short);
+int vec_all_eq (vector bool short, vector bool short);
+int vec_all_eq (vector bool short, vector unsigned short);
+int vec_all_eq (vector bool short, vector signed short);
+int vec_all_eq (vector pixel, vector pixel);
+int vec_all_eq (vector signed int, vector bool int);
+int vec_all_eq (vector signed int, vector signed int);
+int vec_all_eq (vector unsigned int, vector bool int);
+int vec_all_eq (vector unsigned int, vector unsigned int);
+int vec_all_eq (vector bool int, vector bool int);
+int vec_all_eq (vector bool int, vector unsigned int);
+int vec_all_eq (vector bool int, vector signed int);
+int vec_all_eq (vector float, vector float);
+
+int vec_all_ge (vector bool char, vector unsigned char);
+int vec_all_ge (vector unsigned char, vector bool char);
+int vec_all_ge (vector unsigned char, vector unsigned char);
+int vec_all_ge (vector bool char, vector signed char);
+int vec_all_ge (vector signed char, vector bool char);
+int vec_all_ge (vector signed char, vector signed char);
+int vec_all_ge (vector bool short, vector unsigned short);
+int vec_all_ge (vector unsigned short, vector bool short);
+int vec_all_ge (vector unsigned short, vector unsigned short);
+int vec_all_ge (vector signed short, vector signed short);
+int vec_all_ge (vector bool short, vector signed short);
+int vec_all_ge (vector signed short, vector bool short);
+int vec_all_ge (vector bool int, vector unsigned int);
+int vec_all_ge (vector unsigned int, vector bool int);
+int vec_all_ge (vector unsigned int, vector unsigned int);
+int vec_all_ge (vector bool int, vector signed int);
+int vec_all_ge (vector signed int, vector bool int);
+int vec_all_ge (vector signed int, vector signed int);
+int vec_all_ge (vector float, vector float);
+
+int vec_all_gt (vector bool char, vector unsigned char);
+int vec_all_gt (vector unsigned char, vector bool char);
+int vec_all_gt (vector unsigned char, vector unsigned char);
+int vec_all_gt (vector bool char, vector signed char);
+int vec_all_gt (vector signed char, vector bool char);
+int vec_all_gt (vector signed char, vector signed char);
+int vec_all_gt (vector bool short, vector unsigned short);
+int vec_all_gt (vector unsigned short, vector bool short);
+int vec_all_gt (vector unsigned short, vector unsigned short);
+int vec_all_gt (vector bool short, vector signed short);
+int vec_all_gt (vector signed short, vector bool short);
+int vec_all_gt (vector signed short, vector signed short);
+int vec_all_gt (vector bool int, vector unsigned int);
+int vec_all_gt (vector unsigned int, vector bool int);
+int vec_all_gt (vector unsigned int, vector unsigned int);
+int vec_all_gt (vector bool int, vector signed int);
+int vec_all_gt (vector signed int, vector bool int);
+int vec_all_gt (vector signed int, vector signed int);
+int vec_all_gt (vector float, vector float);
+
+int vec_all_in (vector float, vector float);
+
+int vec_all_le (vector bool char, vector unsigned char);
+int vec_all_le (vector unsigned char, vector bool char);
+int vec_all_le (vector unsigned char, vector unsigned char);
+int vec_all_le (vector bool char, vector signed char);
+int vec_all_le (vector signed char, vector bool char);
+int vec_all_le (vector signed char, vector signed char);
+int vec_all_le (vector bool short, vector unsigned short);
+int vec_all_le (vector unsigned short, vector bool short);
+int vec_all_le (vector unsigned short, vector unsigned short);
+int vec_all_le (vector bool short, vector signed short);
+int vec_all_le (vector signed short, vector bool short);
+int vec_all_le (vector signed short, vector signed short);
+int vec_all_le (vector bool int, vector unsigned int);
+int vec_all_le (vector unsigned int, vector bool int);
+int vec_all_le (vector unsigned int, vector unsigned int);
+int vec_all_le (vector bool int, vector signed int);
+int vec_all_le (vector signed int, vector bool int);
+int vec_all_le (vector signed int, vector signed int);
+int vec_all_le (vector float, vector float);
+
+int vec_all_lt (vector bool char, vector unsigned char);
+int vec_all_lt (vector unsigned char, vector bool char);
+int vec_all_lt (vector unsigned char, vector unsigned char);
+int vec_all_lt (vector bool char, vector signed char);
+int vec_all_lt (vector signed char, vector bool char);
+int vec_all_lt (vector signed char, vector signed char);
+int vec_all_lt (vector bool short, vector unsigned short);
+int vec_all_lt (vector unsigned short, vector bool short);
+int vec_all_lt (vector unsigned short, vector unsigned short);
+int vec_all_lt (vector bool short, vector signed short);
+int vec_all_lt (vector signed short, vector bool short);
+int vec_all_lt (vector signed short, vector signed short);
+int vec_all_lt (vector bool int, vector unsigned int);
+int vec_all_lt (vector unsigned int, vector bool int);
+int vec_all_lt (vector unsigned int, vector unsigned int);
+int vec_all_lt (vector bool int, vector signed int);
+int vec_all_lt (vector signed int, vector bool int);
+int vec_all_lt (vector signed int, vector signed int);
+int vec_all_lt (vector float, vector float);
+
+int vec_all_nan (vector float);
+
+int vec_all_ne (vector signed char, vector bool char);
+int vec_all_ne (vector signed char, vector signed char);
+int vec_all_ne (vector unsigned char, vector bool char);
+int vec_all_ne (vector unsigned char, vector unsigned char);
+int vec_all_ne (vector bool char, vector bool char);
+int vec_all_ne (vector bool char, vector unsigned char);
+int vec_all_ne (vector bool char, vector signed char);
+int vec_all_ne (vector signed short, vector bool short);
+int vec_all_ne (vector signed short, vector signed short);
+int vec_all_ne (vector unsigned short, vector bool short);
+int vec_all_ne (vector unsigned short, vector unsigned short);
+int vec_all_ne (vector bool short, vector bool short);
+int vec_all_ne (vector bool short, vector unsigned short);
+int vec_all_ne (vector bool short, vector signed short);
+int vec_all_ne (vector pixel, vector pixel);
+int vec_all_ne (vector signed int, vector bool int);
+int vec_all_ne (vector signed int, vector signed int);
+int vec_all_ne (vector unsigned int, vector bool int);
+int vec_all_ne (vector unsigned int, vector unsigned int);
+int vec_all_ne (vector bool int, vector bool int);
+int vec_all_ne (vector bool int, vector unsigned int);
+int vec_all_ne (vector bool int, vector signed int);
+int vec_all_ne (vector float, vector float);
+
+int vec_all_nge (vector float, vector float);
+
+int vec_all_ngt (vector float, vector float);
+
+int vec_all_nle (vector float, vector float);
+
+int vec_all_nlt (vector float, vector float);
+
+int vec_all_numeric (vector float);
+
+int vec_any_eq (vector signed char, vector bool char);
+int vec_any_eq (vector signed char, vector signed char);
+int vec_any_eq (vector unsigned char, vector bool char);
+int vec_any_eq (vector unsigned char, vector unsigned char);
+int vec_any_eq (vector bool char, vector bool char);
+int vec_any_eq (vector bool char, vector unsigned char);
+int vec_any_eq (vector bool char, vector signed char);
+int vec_any_eq (vector signed short, vector bool short);
+int vec_any_eq (vector signed short, vector signed short);
+int vec_any_eq (vector unsigned short, vector bool short);
+int vec_any_eq (vector unsigned short, vector unsigned short);
+int vec_any_eq (vector bool short, vector bool short);
+int vec_any_eq (vector bool short, vector unsigned short);
+int vec_any_eq (vector bool short, vector signed short);
+int vec_any_eq (vector pixel, vector pixel);
+int vec_any_eq (vector signed int, vector bool int);
+int vec_any_eq (vector signed int, vector signed int);
+int vec_any_eq (vector unsigned int, vector bool int);
+int vec_any_eq (vector unsigned int, vector unsigned int);
+int vec_any_eq (vector bool int, vector bool int);
+int vec_any_eq (vector bool int, vector unsigned int);
+int vec_any_eq (vector bool int, vector signed int);
+int vec_any_eq (vector float, vector float);
+
+int vec_any_ge (vector signed char, vector bool char);
+int vec_any_ge (vector unsigned char, vector bool char);
+int vec_any_ge (vector unsigned char, vector unsigned char);
+int vec_any_ge (vector signed char, vector signed char);
+int vec_any_ge (vector bool char, vector unsigned char);
+int vec_any_ge (vector bool char, vector signed char);
+int vec_any_ge (vector unsigned short, vector bool short);
+int vec_any_ge (vector unsigned short, vector unsigned short);
+int vec_any_ge (vector signed short, vector signed short);
+int vec_any_ge (vector signed short, vector bool short);
+int vec_any_ge (vector bool short, vector unsigned short);
+int vec_any_ge (vector bool short, vector signed short);
+int vec_any_ge (vector signed int, vector bool int);
+int vec_any_ge (vector unsigned int, vector bool int);
+int vec_any_ge (vector unsigned int, vector unsigned int);
+int vec_any_ge (vector signed int, vector signed int);
+int vec_any_ge (vector bool int, vector unsigned int);
+int vec_any_ge (vector bool int, vector signed int);
+int vec_any_ge (vector float, vector float);
+
+int vec_any_gt (vector bool char, vector unsigned char);
+int vec_any_gt (vector unsigned char, vector bool char);
+int vec_any_gt (vector unsigned char, vector unsigned char);
+int vec_any_gt (vector bool char, vector signed char);
+int vec_any_gt (vector signed char, vector bool char);
+int vec_any_gt (vector signed char, vector signed char);
+int vec_any_gt (vector bool short, vector unsigned short);
+int vec_any_gt (vector unsigned short, vector bool short);
+int vec_any_gt (vector unsigned short, vector unsigned short);
+int vec_any_gt (vector bool short, vector signed short);
+int vec_any_gt (vector signed short, vector bool short);
+int vec_any_gt (vector signed short, vector signed short);
+int vec_any_gt (vector bool int, vector unsigned int);
+int vec_any_gt (vector unsigned int, vector bool int);
+int vec_any_gt (vector unsigned int, vector unsigned int);
+int vec_any_gt (vector bool int, vector signed int);
+int vec_any_gt (vector signed int, vector bool int);
+int vec_any_gt (vector signed int, vector signed int);
+int vec_any_gt (vector float, vector float);
+
+int vec_any_le (vector bool char, vector unsigned char);
+int vec_any_le (vector unsigned char, vector bool char);
+int vec_any_le (vector unsigned char, vector unsigned char);
+int vec_any_le (vector bool char, vector signed char);
+int vec_any_le (vector signed char, vector bool char);
+int vec_any_le (vector signed char, vector signed char);
+int vec_any_le (vector bool short, vector unsigned short);
+int vec_any_le (vector unsigned short, vector bool short);
+int vec_any_le (vector unsigned short, vector unsigned short);
+int vec_any_le (vector bool short, vector signed short);
+int vec_any_le (vector signed short, vector bool short);
+int vec_any_le (vector signed short, vector signed short);
+int vec_any_le (vector bool int, vector unsigned int);
+int vec_any_le (vector unsigned int, vector bool int);
+int vec_any_le (vector unsigned int, vector unsigned int);
+int vec_any_le (vector bool int, vector signed int);
+int vec_any_le (vector signed int, vector bool int);
+int vec_any_le (vector signed int, vector signed int);
+int vec_any_le (vector float, vector float);
+
+int vec_any_lt (vector bool char, vector unsigned char);
+int vec_any_lt (vector unsigned char, vector bool char);
+int vec_any_lt (vector unsigned char, vector unsigned char);
+int vec_any_lt (vector bool char, vector signed char);
+int vec_any_lt (vector signed char, vector bool char);
+int vec_any_lt (vector signed char, vector signed char);
+int vec_any_lt (vector bool short, vector unsigned short);
+int vec_any_lt (vector unsigned short, vector bool short);
+int vec_any_lt (vector unsigned short, vector unsigned short);
+int vec_any_lt (vector bool short, vector signed short);
+int vec_any_lt (vector signed short, vector bool short);
+int vec_any_lt (vector signed short, vector signed short);
+int vec_any_lt (vector bool int, vector unsigned int);
+int vec_any_lt (vector unsigned int, vector bool int);
+int vec_any_lt (vector unsigned int, vector unsigned int);
+int vec_any_lt (vector bool int, vector signed int);
+int vec_any_lt (vector signed int, vector bool int);
+int vec_any_lt (vector signed int, vector signed int);
+int vec_any_lt (vector float, vector float);
+
+int vec_any_nan (vector float);
+
+int vec_any_ne (vector signed char, vector bool char);
+int vec_any_ne (vector signed char, vector signed char);
+int vec_any_ne (vector unsigned char, vector bool char);
+int vec_any_ne (vector unsigned char, vector unsigned char);
+int vec_any_ne (vector bool char, vector bool char);
+int vec_any_ne (vector bool char, vector unsigned char);
+int vec_any_ne (vector bool char, vector signed char);
+int vec_any_ne (vector signed short, vector bool short);
+int vec_any_ne (vector signed short, vector signed short);
+int vec_any_ne (vector unsigned short, vector bool short);
+int vec_any_ne (vector unsigned short, vector unsigned short);
+int vec_any_ne (vector bool short, vector bool short);
+int vec_any_ne (vector bool short, vector unsigned short);
+int vec_any_ne (vector bool short, vector signed short);
+int vec_any_ne (vector pixel, vector pixel);
+int vec_any_ne (vector signed int, vector bool int);
+int vec_any_ne (vector signed int, vector signed int);
+int vec_any_ne (vector unsigned int, vector bool int);
+int vec_any_ne (vector unsigned int, vector unsigned int);
+int vec_any_ne (vector bool int, vector bool int);
+int vec_any_ne (vector bool int, vector unsigned int);
+int vec_any_ne (vector bool int, vector signed int);
+int vec_any_ne (vector float, vector float);
+
+int vec_any_nge (vector float, vector float);
+
+int vec_any_ngt (vector float, vector float);
+
+int vec_any_nle (vector float, vector float);
+
+int vec_any_nlt (vector float, vector float);
+
+int vec_any_numeric (vector float);
+
+int vec_any_out (vector float, vector float);
+@end smallexample
-vector signed int vec_any_ne (vector unsigned short,
- vector signed short);
-vector signed int vec_any_ne (vector unsigned short,
- vector unsigned short);
-vector signed int vec_any_ne (vector signed int, vector unsigned int);
-vector signed int vec_any_ne (vector signed int, vector signed int);
-vector signed int vec_any_ne (vector unsigned int, vector signed int);
-vector signed int vec_any_ne (vector unsigned int, vector unsigned int);
+@node SPARC VIS Built-in Functions
+@subsection SPARC VIS Built-in Functions
-vector signed int vec_any_ne (vector float, vector float);
+GCC supports SIMD operations on the SPARC using both the generic vector
+extensions (@pxref{Vector Extensions}) as well as built-in functions for
+the SPARC Visual Instruction Set (VIS). When you use the @option{-mvis}
+switch, the VIS extension is exposed as the following built-in functions:
-vector signed int vec_any_nge (vector float, vector float);
+@smallexample
+typedef int v2si __attribute__ ((vector_size (8)));
+typedef short v4hi __attribute__ ((vector_size (8)));
+typedef short v2hi __attribute__ ((vector_size (4)));
+typedef char v8qi __attribute__ ((vector_size (8)));
+typedef char v4qi __attribute__ ((vector_size (4)));
+
+void * __builtin_vis_alignaddr (void *, long);
+int64_t __builtin_vis_faligndatadi (int64_t, int64_t);
+v2si __builtin_vis_faligndatav2si (v2si, v2si);
+v4hi __builtin_vis_faligndatav4hi (v4si, v4si);
+v8qi __builtin_vis_faligndatav8qi (v8qi, v8qi);
+
+v4hi __builtin_vis_fexpand (v4qi);
+
+v4hi __builtin_vis_fmul8x16 (v4qi, v4hi);
+v4hi __builtin_vis_fmul8x16au (v4qi, v4hi);
+v4hi __builtin_vis_fmul8x16al (v4qi, v4hi);
+v4hi __builtin_vis_fmul8sux16 (v8qi, v4hi);
+v4hi __builtin_vis_fmul8ulx16 (v8qi, v4hi);
+v2si __builtin_vis_fmuld8sux16 (v4qi, v2hi);
+v2si __builtin_vis_fmuld8ulx16 (v4qi, v2hi);
+
+v4qi __builtin_vis_fpack16 (v4hi);
+v8qi __builtin_vis_fpack32 (v2si, v2si);
+v2hi __builtin_vis_fpackfix (v2si);
+v8qi __builtin_vis_fpmerge (v4qi, v4qi);
+
+int64_t __builtin_vis_pdist (v8qi, v8qi, int64_t);
+@end smallexample
-vector signed int vec_any_ngt (vector float, vector float);
+@node Target Format Checks
+@section Format Checks Specific to Particular Target Machines
-vector signed int vec_any_nle (vector float, vector float);
+For some target machines, GCC supports additional options to the
+format attribute
+(@pxref{Function Attributes,,Declaring Attributes of Functions}).
-vector signed int vec_any_nlt (vector float, vector float);
+@menu
+* Solaris Format Checks::
+@end menu
-vector signed int vec_any_numeric (vector float);
+@node Solaris Format Checks
+@subsection Solaris Format Checks
-vector signed int vec_any_out (vector float, vector float);
-@end smallexample
+Solaris targets support the @code{cmn_err} (or @code{__cmn_err__}) format
+check. @code{cmn_err} accepts a subset of the standard @code{printf}
+conversions, and the two-argument @code{%b} conversion for displaying
+bit-fields. See the Solaris man page for @code{cmn_err} for more information.
@node Pragmas
@section Pragmas Accepted by GCC
* RS/6000 and PowerPC Pragmas::
* Darwin Pragmas::
* Solaris Pragmas::
-* Tru64 Pragmas::
+* Symbol-Renaming Pragmas::
+* Structure-Packing Pragmas::
@end menu
@node ARM Pragmas
@c Describe c4x pragmas here.
@c Describe h8300 pragmas here.
-@c Describe i370 pragmas here.
-@c Describe i960 pragmas here.
@c Describe sh pragmas here.
@c Describe v850 pragmas here.
@node Solaris Pragmas
@subsection Solaris Pragmas
-For compatibility with the SunPRO compiler, the following pragma
-is supported.
+The Solaris target supports @code{#pragma redefine_extname}
+(@pxref{Symbol-Renaming Pragmas}). It also supports additional
+@code{#pragma} directives for compatibility with the system compiler.
@table @code
-@item redefine_extname @var{oldname} @var{newname}
-@cindex pragma, redefine_extname
+@item align @var{alignment} (@var{variable} [, @var{variable}]...)
+@cindex pragma, align
+
+Increase the minimum alignment of each @var{variable} to @var{alignment}.
+This is the same as GCC's @code{aligned} attribute @pxref{Variable
+Attributes}). Macro expansion occurs on the arguments to this pragma
+when compiling C and Objective-C. It does not currently occur when
+compiling C++, but this is a bug which may be fixed in a future
+release.
+
+@item fini (@var{function} [, @var{function}]...)
+@cindex pragma, fini
+
+This pragma causes each listed @var{function} to be called after
+main, or during shared module unloading, by adding a call to the
+@code{.fini} section.
+
+@item init (@var{function} [, @var{function}]...)
+@cindex pragma, init
+
+This pragma causes each listed @var{function} to be called during
+initialization (before @code{main}) or during shared module loading, by
+adding a call to the @code{.init} section.
-This pragma gives the C function @var{oldname} the assembler label
-@var{newname}. The pragma must appear before the function declaration.
-This pragma is equivalent to the asm labels extension (@pxref{Asm
-Labels}). The preprocessor defines @code{__PRAGMA_REDEFINE_EXTNAME}
-if the pragma is available.
@end table
-@node Tru64 Pragmas
-@subsection Tru64 Pragmas
+@node Symbol-Renaming Pragmas
+@subsection Symbol-Renaming Pragmas
-For compatibility with the Compaq C compiler, the following pragma
-is supported.
+For compatibility with the Solaris and Tru64 UNIX system headers, GCC
+supports two @code{#pragma} directives which change the name used in
+assembly for a given declaration. These pragmas are only available on
+platforms whose system headers need them. To get this effect on all
+platforms supported by GCC, use the asm labels extension (@pxref{Asm
+Labels}).
@table @code
+@item redefine_extname @var{oldname} @var{newname}
+@cindex pragma, redefine_extname
+
+This pragma gives the C function @var{oldname} the assembly symbol
+@var{newname}. The preprocessor macro @code{__PRAGMA_REDEFINE_EXTNAME}
+will be defined if this pragma is available (currently only on
+Solaris).
+
@item extern_prefix @var{string}
@cindex pragma, extern_prefix
-This pragma renames all subsequent function and variable declarations
-such that @var{string} is prepended to the name. This effect may be
-terminated by using another @code{extern_prefix} pragma with the
-empty string.
-
-This pragma is similar in intent to to the asm labels extension
-(@pxref{Asm Labels}) in that the system programmer wants to change
-the assembly-level ABI without changing the source-level API. The
-preprocessor defines @code{__PRAGMA_EXTERN_PREFIX} if the pragma is
-available.
+This pragma causes all subsequent external function and variable
+declarations to have @var{string} prepended to their assembly symbols.
+This effect may be terminated with another @code{extern_prefix} pragma
+whose argument is an empty string. The preprocessor macro
+@code{__PRAGMA_EXTERN_PREFIX} will be defined if this pragma is
+available (currently only on Tru64 UNIX)@.
@end table
+These pragmas and the asm labels extension interact in a complicated
+manner. Here are some corner cases you may want to be aware of.
+
+@enumerate
+@item Both pragmas silently apply only to declarations with external
+linkage. Asm labels do not have this restriction.
+
+@item In C++, both pragmas silently apply only to declarations with
+``C'' linkage. Again, asm labels do not have this restriction.
+
+@item If any of the three ways of changing the assembly name of a
+declaration is applied to a declaration whose assembly name has
+already been determined (either by a previous use of one of these
+features, or because the compiler needed the assembly name in order to
+generate code), and the new name is different, a warning issues and
+the name does not change.
+
+@item The @var{oldname} used by @code{#pragma redefine_extname} is
+always the C-language name.
+
+@item If @code{#pragma extern_prefix} is in effect, and a declaration
+occurs with an asm label attached, the prefix is silently ignored for
+that declaration.
+
+@item If @code{#pragma extern_prefix} and @code{#pragma redefine_extname}
+apply to the same declaration, whichever triggered first wins, and a
+warning issues if they contradict each other. (We would like to have
+@code{#pragma redefine_extname} always win, for consistency with asm
+labels, but if @code{#pragma extern_prefix} triggers first we have no
+way of knowing that that happened.)
+@end enumerate
+
+@node Structure-Packing Pragmas
+@subsection Structure-Packing Pragmas
+
+For compatibility with Win32, GCC supports as set of @code{#pragma}
+directives which change the maximum alignment of members of structures,
+unions, and classes subsequently defined. The @var{n} value below always
+is required to be a small power of two and specifies the new alignment
+in bytes.
+
+@enumerate
+@item @code{#pragma pack(@var{n})} simply sets the new alignment.
+@item @code{#pragma pack()} sets the alignment to the one that was in
+effect when compilation started (see also command line option
+@option{-fpack-struct[=<n>]} @pxref{Code Gen Options}).
+@item @code{#pragma pack(push[,@var{n}])} pushes the current alignment
+setting on an internal stack and then optionally sets the new alignment.
+@item @code{#pragma pack(pop)} restores the alignment setting to the one
+saved at the top of the internal stack (and removes that stack entry).
+Note that @code{#pragma pack([@var{n}])} does not influence this internal
+stack; thus it is possible to have @code{#pragma pack(push)} followed by
+multiple @code{#pragma pack(@var{n})} instances and finalized by a single
+@code{#pragma pack(pop)}.
+@end enumerate
+
@node Unnamed Fields
-@section Unnamed struct/union fields within structs/unions.
+@section Unnamed struct/union fields within structs/unions
@cindex struct
@cindex union
a structure or union that contains, as fields, structures and unions
without names. For example:
-@example
+@smallexample
struct @{
int a;
union @{
@};
int d;
@} foo;
-@end example
+@end smallexample
In this example, the user would be able to access members of the unnamed
union with code like @samp{foo.b}. Note that only unnamed structs and
You must never create such structures that cause ambiguous field definitions.
For example, this structure:
-@example
+@smallexample
struct @{
int a;
struct @{
int a;
@};
@} foo;
-@end example
+@end smallexample
It is ambiguous which @code{a} is being referred to with @samp{foo.a}.
Such constructs are not supported and must be avoided. In the future,
such constructs may be detected and treated as compilation errors.
+@opindex fms-extensions
+Unless @option{-fms-extensions} is used, the unnamed field must be a
+structure or union definition without a tag (for example, @samp{struct
+@{ int a; @};}). If @option{-fms-extensions} is used, the field may
+also be a definition with a tag such as @samp{struct foo @{ int a;
+@};}, a reference to a previously defined structure or union such as
+@samp{struct foo;}, or a reference to a @code{typedef} name for a
+previously defined structure or union type.
+
@node Thread-Local
@section Thread-Local Storage
@cindex Thread-Local Storage
At the user level, the extension is visible with a new storage
class keyword: @code{__thread}. For example:
-@example
+@smallexample
__thread int i;
extern __thread struct state s;
static __thread char *p;
-@end example
+@end smallexample
The @code{__thread} specifier may be used alone, with the @code{extern}
or @code{static} specifiers, but with no other storage class specifier.
use a macro to return the minimum of two things in C++, as in the
following example.
-@example
+@smallexample
#define MIN(X,Y) ((X) < (Y) ? : (X) : (Y))
-@end example
+@end smallexample
@noindent
You might then use @w{@samp{int min = MIN (i, j);}} to set @var{min} to
In most expressions, it is intuitively obvious what is a read and what is
a write. For instance
-@example
+@smallexample
volatile int *dst = @var{somevalue};
volatile int *src = @var{someothervalue};
*dst = *src;
-@end example
+@end smallexample
@noindent
will cause a read of the volatile object pointed to by @var{src} and stores the
Less obvious expressions are where something which looks like an access
is used in a void context. An example would be,
-@example
+@smallexample
volatile int *src = @var{somevalue};
*src;
-@end example
+@end smallexample
With C, such expressions are rvalues, and as rvalues cause a read of
the object, GCC interprets this as a read of the volatile being pointed
of the object. When the object has incomplete type, G++ issues a
warning.
-@example
+@smallexample
struct S;
struct T @{int m;@};
volatile S *ptr1 = @var{somevalue};
volatile T *ptr2 = @var{somevalue};
*ptr1;
*ptr2;
-@end example
+@end smallexample
In this example, a warning is issued for @code{*ptr1}, and @code{*ptr2}
causes a read of the object pointed to. If you wish to force an error on
@cindex restricted references
@cindex restricted this pointer
-As with gcc, g++ understands the C99 feature of restricted pointers,
+As with the C front end, G++ understands the C99 feature of restricted pointers,
specified with the @code{__restrict__}, or @code{__restrict} type
qualifier. Because you cannot compile C++ by specifying the @option{-std=c99}
language flag, @code{restrict} is not a keyword in C++.
references, which indicate that the reference is not aliased in the local
context.
-@example
+@smallexample
void fn (int *__restrict__ rptr, int &__restrict__ rref)
@{
/* @r{@dots{}} */
@}
-@end example
+@end smallexample
@noindent
In the body of @code{fn}, @var{rptr} points to an unaliased integer and
You may also specify whether a member function's @var{this} pointer is
unaliased by using @code{__restrict__} as a member function qualifier.
-@example
+@smallexample
void T::fn () __restrict__
@{
/* @r{@dots{}} */
@}
-@end example
+@end smallexample
@noindent
Within the body of @code{T::fn}, @var{this} will have the effective
@end table
When used with GNU ld version 2.8 or later on an ELF system such as
-Linux/GNU or Solaris 2, or on Microsoft Windows, duplicate copies of
+GNU/Linux or Solaris 2, or on Microsoft Windows, duplicate copies of
these constructs will be discarded at link time. This is known as
COMDAT support.
another way to control placement of these constructs.
@node C++ Interface
-@section Declarations and Definitions in One Header
+@section #pragma interface and implementation
@cindex interface and implementation headers, C++
@cindex C++ interface and implementation headers
-C++ object definitions can be quite complex. In principle, your source
-code will need two kinds of things for each object that you use across
-more than one source file. First, you need an @dfn{interface}
-specification, describing its structure with type declarations and
-function prototypes. Second, you need the @dfn{implementation} itself.
-It can be tedious to maintain a separate interface description in a
-header file, in parallel to the actual implementation. It is also
-dangerous, since separate interface and implementation definitions may
-not remain parallel.
-
@cindex pragmas, interface and implementation
-With GNU C++, you can use a single header file for both purposes.
-@quotation
-@emph{Warning:} The mechanism to specify this is in transition. For the
-nonce, you must use one of two @code{#pragma} commands; in a future
-release of GNU C++, an alternative mechanism will make these
-@code{#pragma} commands unnecessary.
-@end quotation
+@code{#pragma interface} and @code{#pragma implementation} provide the
+user with a way of explicitly directing the compiler to emit entities
+with vague linkage (and debugging information) in a particular
+translation unit.
-The header file contains the full definitions, but is marked with
-@samp{#pragma interface} in the source code. This allows the compiler
-to use the header file only as an interface specification when ordinary
-source files incorporate it with @code{#include}. In the single source
-file where the full implementation belongs, you can use either a naming
-convention or @samp{#pragma implementation} to indicate this alternate
-use of the header file.
+@emph{Note:} As of GCC 2.7.2, these @code{#pragma}s are not useful in
+most cases, because of COMDAT support and the ``key method'' heuristic
+mentioned in @ref{Vague Linkage}. Using them can actually cause your
+program to grow due to unnecessary out-of-line copies of inline
+functions. Currently (3.4) the only benefit of these
+@code{#pragma}s is reduced duplication of debugging information, and
+that should be addressed soon on DWARF 2 targets with the use of
+COMDAT groups.
@table @code
@item #pragma interface
implementation}. This was deemed to be more trouble than it was worth,
however, and disabled.
-If you use an explicit @samp{#pragma implementation}, it must appear in
-your source file @emph{before} you include the affected header files.
-
Use the string argument if you want a single implementation file to
include code from multiple header files. (You must also use
@samp{#include} to include the header file; @samp{#pragma
effect on function inlining.
If you define a class in a header file marked with @samp{#pragma
-interface}, the effect on a function defined in that class is similar to
-an explicit @code{extern} declaration---the compiler emits no code at
-all to define an independent version of the function. Its definition
-is used only for inlining with its callers.
+interface}, the effect on an inline function defined in that class is
+similar to an explicit @code{extern} declaration---the compiler emits
+no code at all to define an independent version of the function. Its
+definition is used only for inlining with its callers.
@opindex fno-implement-inlines
Conversely, when you include the same header file in a main source file
system. Somehow the compiler and linker have to make sure that each
template instance occurs exactly once in the executable if it is needed,
and not at all otherwise. There are two basic approaches to this
-problem, which I will refer to as the Borland model and the Cfront model.
+problem, which are referred to as the Borland model and the Cfront model.
@table @asis
@item Borland model
@end table
When used with GNU ld version 2.8 or later on an ELF system such as
-Linux/GNU or Solaris 2, or on Microsoft Windows, g++ supports the
-Borland model. On other systems, g++ implements neither automatic
+GNU/Linux or Solaris 2, or on Microsoft Windows, G++ supports the
+Borland model. On other systems, G++ implements neither automatic
model.
-A future version of g++ will support a hybrid model whereby the compiler
+A future version of G++ will support a hybrid model whereby the compiler
will emit any instantiations for which the template definition is
included in the compile, and store template definitions and
instantiation context information into the object file for the rest.
instantiations you need into one big file; or you can create small files
like
-@example
+@smallexample
#include "Foo.h"
#include "Foo.cc"
template class Foo<int>;
template ostream& operator <<
(ostream&, const Foo<int>&);
-@end example
+@end smallexample
for each of the instances you need, and create a template instantiation
library from those.
instances required by your explicit instantiations (but not by any
other files) without having to specify them as well.
-g++ has extended the template instantiation syntax given in the ISO
+G++ has extended the template instantiation syntax given in the ISO
standard to allow forward declaration of explicit instantiations
(with @code{extern}), instantiation of the compiler support data for a
template class (i.e.@: the vtable) without instantiating any of its
members of a template class, without the support data or member
functions (with (@code{static}):
-@example
+@smallexample
extern template int max (int, int);
inline template class Foo<int>;
static template class Foo<int>;
-@end example
+@end smallexample
@item
-Do nothing. Pretend g++ does implement automatic instantiation
+Do nothing. Pretend G++ does implement automatic instantiation
management. Code written for the Borland model will work fine, but
each translation unit will contain instances of each of the templates it
uses. In a large program, this can lead to an unacceptable amount of code
duplication.
-
-@xref{C++ Interface,,Declarations and Definitions in One Header}, for
-more discussion of these pragmas.
@end enumerate
@node Bound member functions
The syntax for this extension is
-@example
+@smallexample
extern A a;
extern int (A::*fp)();
typedef int (*fptr)(A *);
fptr p = (fptr)(a.*fp);
-@end example
+@end smallexample
For PMF constants (i.e.@: expressions of the form @samp{&Klasse::Member}),
no object is needed to obtain the address of the function. They can be
converted to function pointers directly:
-@example
+@smallexample
fptr p1 = (fptr)(&A::foo);
-@end example
+@end smallexample
@opindex Wno-pmf-conversions
You must specify @option{-Wno-pmf-conversions} to use this extension.
@node Strong Using
@section Strong Using
+@strong{Caution:} The semantics of this extension are not fully
+defined. Users should refrain from using this extension as its
+semantics may change subtly over time. It is possible that this
+extension wil be removed in future versions of G++.
+
A using-directive with @code{__attribute ((strong))} is stronger
than a normal using-directive in two ways:
template <class T> struct A @{ @};
@}
using namespace debug __attribute ((__strong__));
- template <> struct A<int> @{ @}; // ok to specialize
+ template <> struct A<int> @{ @}; // @r{ok to specialize}
template <class T> void f (A<T>);
@}
int main()
@{
- f (std::A<float>()); // lookup finds std::f
+ f (std::A<float>()); // @r{lookup finds} std::f
f (std::A<int>());
@}
@end smallexample
@smallexample
struct S @{ ~S(); @};
- extern void bar(); // is written in Java, and may throw exceptions
+ extern void bar(); // @r{is written in Java, and may throw exceptions}
void foo()
@{
S s;
@table @code
@item -fexternal-templates
@itemx -falt-external-templates
-These are two of the many ways for g++ to implement template
+These are two of the many ways for G++ to implement template
instantiation. @xref{Template Instantiation}. The C++ standard clearly
defines how template definitions have to be organized across
-implementation units. g++ has an implicit instantiation mechanism that
+implementation units. G++ has an implicit instantiation mechanism that
should work just fine for standard-conforming code.
@item -fstrict-prototype
it is required for backwards compatibility @xref{Backwards Compatibility}.
@end table
+G++ allows a virtual function returning @samp{void *} to be overridden
+by one returning a different pointer type. This extension to the
+covariant return type rules is now deprecated and will be removed from a
+future version.
+
The named return value extension has been deprecated, and is now
-removed from g++.
+removed from G++.
The use of initializer lists with new expressions has been deprecated,
-and is now removed from g++.
+and is now removed from G++.
Floating and complex non-type template parameters have been deprecated,
-and are now removed from g++.
+and are now removed from G++.
The implicit typename extension has been deprecated and is now
-removed from g++.
+removed from G++.
The use of default arguments in function pointers, function typedefs and
and other places where they are not permitted by the standard is
-deprecated and will be removed from a future version of g++.
+deprecated and will be removed from a future version of G++.
@node Backwards Compatibility
@section Backwards Compatibility
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