-@c Copyright (C) 1988,1989,1992,1993,1994,1996,1998,1999,2000,2001,2002,2003,2004
-@c Free Software Foundation, Inc.
+@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1996, 1998, 1999, 2000,
+@c 2001, 2002, 2003, 2004, 2005, 2006 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
* Conditionals:: Omitting the middle operand of a @samp{?:} expression.
* Long Long:: Double-word integers---@code{long long int}.
* Complex:: Data types for complex numbers.
+* Decimal Float:: Decimal Floating Point.
* Hex Floats:: Hexadecimal floating-point constants.
* Zero Length:: Zero-length arrays.
* Variable Length:: Arrays whose length is computed at run time.
* 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}.
+* Atomic Builtins:: Built-in functions for atomic memory access.
+* Object Size Checking:: Built-in functions for limited buffer overflow
+ checking.
* 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.
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;
header files using statement-expression that lead to precisely this
bug.)
+Jumping into a statement expression with @code{goto} or using a
+@code{switch} statement outside the statement expression with a
+@code{case} or @code{default} label inside the statement expression is
+not permitted. Jumping into a statement expression with a computed
+@code{goto} (@pxref{Labels as Values}) yields undefined behavior.
+Jumping out of a statement expression is permitted, but if the
+statement expression is part of a larger expression then it is
+unspecified which other subexpressions of that expression have been
+evaluated except where the language definition requires certain
+subexpressions to be evaluated before or after the statement
+expression. In any case, as with a function call the evaluation of a
+statement expression is not interleaved with the evaluation of other
+parts of the containing expression. For example,
+
+@smallexample
+ foo (), ((@{ bar1 (); goto a; 0; @}) + bar2 ()), baz();
+@end smallexample
+
+@noindent
+will call @code{foo} and @code{bar1} and will not call @code{baz} but
+may or may not call @code{bar2}. If @code{bar2} is called, it will be
+called after @code{foo} and before @code{bar1}
+
@node Local Labels
@section Locally Declared Labels
@cindex local labels
@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.
@end smallexample
Nested function definitions are permitted within functions in the places
-where variable definitions are allowed; that is, in any block, before
-the first statement in the block.
+where variable definitions are allowed; that is, in any block, mixed
+with the other declarations and statements in the block.
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:
@end group
@end smallexample
-A nested function always has internal linkage. Declaring one with
-@code{extern} is erroneous. If you need to declare the nested function
+A nested function always has no linkage. Declaring one with
+@code{extern} or @code{static} is erroneous. If you need to declare the nested function
before its definition, use @code{auto} (which is otherwise meaningless
for function declarations).
variables are named @code{foo$real} and @code{foo$imag}. You can
examine and set these two fictitious variables with your debugger.
+@node Decimal Float
+@section Decimal Floating Point
+@cindex decimal floating point
+@cindex @code{_Decimal32} data type
+@cindex @code{_Decimal64} data type
+@cindex @code{_Decimal128} data type
+@cindex @code{df} integer suffix
+@cindex @code{dd} integer suffix
+@cindex @code{dl} integer suffix
+@cindex @code{DF} integer suffix
+@cindex @code{DD} integer suffix
+@cindex @code{DL} integer suffix
+
+GNU C supports decimal floating point types in addition to the
+standard floating-point types. This extension supports decimal
+floating-point arithmetic as defined in IEEE-754R, the proposed
+revision of IEEE-754. The C language extension is defined in ISO/IEC
+DTR 24732, Draft 5. Support for this functionality will change when
+it is accepted into the C standard and might change for new drafts
+of the proposal. Calling conventions for any target might also change.
+Not all targets support decimal floating point.
+
+Support for decimal floating point includes the arithmetic operators
+add, subtract, multiply, divide; unary arithmetic operators;
+relational operators; equality operators; and conversions to and from
+integer and other floating-point types. Use a suffix @samp{df} or
+@samp{DF} in a literal constant of type @code{_Decimal32}, @samp{dd}
+or @samp{DD} for @code{_Decimal64}, and @samp{dl} or @samp{DL} for
+@code{_Decimal128}.
+
+Passing a decimal floating-point value as an argument to a function
+without a prototype is undefined.
+
+Types @code{_Decimal32}, @code{_Decimal64}, and @code{_Decimal128}
+are supported by the DWARF2 debug information format.
+
@node Hex Floats
@section Hex Floats
@cindex hex floats
@cindex function attributes
@cindex declaring attributes of functions
@cindex functions that never return
+@cindex functions that return more than once
@cindex functions that have no side effects
@cindex functions in arbitrary sections
@cindex functions that behave like malloc
attributes when making a declaration. This keyword is followed by an
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{noreturn}, @code{returns_twice}, @code{noinline}, @code{always_inline},
+@code{flatten}, @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},
-@code{alias}, @code{warn_unused_result} and @code{nonnull}. Several other
+@code{alias}, @code{warn_unused_result}, @code{nonnull}
+and @code{externally_visible}. Several other
attributes are defined for functions on particular target systems. Other
attributes, including @code{section} are supported for variables declarations
(@pxref{Variable Attributes}) and for types (@pxref{Type Attributes}).
attributes.
@table @code
-@c Keep this table alphabetized by attribute name. Treat _ as space.
+@c Keep this table alphabetized by attribute name. Treat _ as space.
@item alias ("@var{target}")
@cindex @code{alias} attribute
void f () __attribute__ ((weak, alias ("__f")));
@end smallexample
-declares @samp{f} to be a weak alias for @samp{__f}. In C++, the
-mangled name for the target must be used.
+defines @samp{f} to be a weak alias for @samp{__f}. In C++, the
+mangled name for the target must be used. It is an error if @samp{__f}
+is not defined in the same translation unit.
Not all target machines support this attribute.
For functions declared inline, this attribute inlines the function even
if no optimization level was specified.
+@cindex @code{flatten} function attribute
+@item flatten
+Generally, inlining into a function is limited. For a function marked with
+this attribute, every call inside this function will be inlined, if possible.
+Whether the function itself is considered for inlining depends on its size and
+the current inlining parameters. The @code{flatten} attribute only works
+reliably in unit-at-a-time mode.
+
@item cdecl
@cindex functions that do pop the argument stack on the 386
@opindex mrtd
@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
+more strict class than the @code{pure} attribute below, since function is not
allowed to read global memory.
@cindex pointer arguments
@item dllexport
@cindex @code{__declspec(dllexport)}
-On Microsoft 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
+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.
-On cygwin, mingw and arm-pe targets, @code{__declspec(dllexport)} is
-recognized as a synonym for @code{__attribute__ ((dllexport))} for
-compatibility with other Microsoft Windows compilers.
-
-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.
+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 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 Microsoft Windows dll library. The pointer
-name is formed by combining @code{_imp__} and the function or variable
-name. The attribute implies @code{extern} storage.
-
-Currently, the attribute is ignored for inlined functions. If the
+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.
attribute is ignored for virtual methods to allow creation of vtables
using thunks.
-On cygwin, mingw and arm-pe targets, @code{__declspec(dllimport)} is
-recognized as a synonym for @code{__attribute__ ((dllimport))} for
-compatibility with other Microsoft Windows compilers.
-
-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.
-
-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.
+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
You must use GAS and GLD from GNU binutils version 2.7 or later for
this attribute to work correctly.
+@item exception_handler
+@cindex exception handler functions on the Blackfin processor
+Use this attribute on the Blackfin to indicate that the specified function
+is an exception handler. The compiler will generate function entry and
+exit sequences suitable for use in an exception handler when this
+attribute is present.
+
@item far
@cindex functions which handle memory bank switching
On 68HC11 and 68HC12 the @code{far} attribute causes the compiler to
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}.
+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
+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
+pass the first argument (if of integral type) in the register ECX and
+the second argument (if of integral type) in the register EDX@. Subsequent
+and other typed 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})
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 function_vector
@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.
+Use this attribute on the ARM, AVR, C4x, CRX, M32C, M32R/D, MS1, 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.
-Note, interrupt handlers for the m68k, H8/300, H8/300H, H8S, and SH processors
-can be specified via the @code{interrupt_handler} attribute.
+Note, interrupt handlers for the Blackfin, 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.
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.
+@cindex interrupt handler functions on the Blackfin, m68k, H8/300 and SH processors
+Use this attribute on the Blackfin, 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 kspisusp
+@cindex User stack pointer in interrupts on the Blackfin
+When used together with @code{interrupt_handler}, @code{exception_handler}
+or @code{nmi_handler}, code will be generated to load the stack pointer
+from the USP register in the function prologue.
@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
+@code{long_call} attribute indicates that the function might be far
+away from the call site and require a different (more expensive)
+calling sequence. 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.
+On the Blackfin, RS/6000 and PowerPC, the @code{longcall} attribute
+indicates that the function might be far away from the call site and
+require a different (more expensive) calling sequence. The
+@code{shortcall} attribute indicates that the function is always close
+enough for the shorter calling sequence to be used. These attributes
+override both the @option{-mlongcall} switch and, on the RS/6000 and
+PowerPC, the @code{#pragma longcall} setting.
@xref{RS/6000 and PowerPC Options}, for more information on whether long
calls are necessary.
+@item long_call
+@cindex indirect calls on MIPS
+This attribute specifies how a particular function is called on MIPS@.
+The attribute overrides the @option{-mlong-calls} (@pxref{MIPS Options})
+command line switch. This 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.
+
@item malloc
@cindex @code{malloc} attribute
The @code{malloc} attribute is used to tell the compiler that a function
This attribute can be used to cancel the effect of the @option{-mlong-calls}
option.
+@item nesting
+@cindex Allow nesting in an interrupt handler on the Blackfin processor.
+Use this attribute together with @code{interrupt_handler},
+@code{exception_handler} or @code{nmi_handler} to indicate that the function
+entry code should enable nested interrupts or exceptions.
+
+@item nmi_handler
+@cindex NMI handler functions on the Blackfin processor
+Use this attribute on the Blackfin to indicate that the specified function
+is an NMI handler. The compiler will generate function entry and
+exit sequences suitable for use in an NMI handler when this
+attribute is present.
+
@item no_instrument_function
@cindex @code{no_instrument_function} function attribute
@opindex finstrument-functions
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.
+by throwing an exception or calling @code{longjmp}.
Do not assume that registers saved by the calling function are
restored before calling the @code{noreturn} function.
volatile voidfn fatal;
@end smallexample
+This approach does not work in GNU C++.
+
@item nothrow
@cindex @code{nothrow} function attribute
The @code{nothrow} attribute is used to inform the compiler that a
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.
+implemented in GCC versions earlier than 3.3.
@item pure
@cindex @code{pure} function attribute
@cindex @code{regparm} attribute
@cindex functions that are passed arguments in registers on the 386
On the Intel 386, the @code{regparm} attribute causes the compiler to
-pass up to @var{number} integer arguments in registers EAX,
-EDX, and ECX instead of on the stack. Functions that take a
-variable number of arguments will continue to be passed all of their
+pass arguments number one to @var{number} if they are of integral type
+in registers EAX, EDX, and ECX instead of on the stack. Functions that
+take a variable number of arguments will continue to be passed all of their
arguments on the stack.
Beware that on some ELF systems this attribute is unsuitable for
disabled with the linker or the loader if desired, to avoid the
problem.)
+@item sseregparm
+@cindex @code{sseregparm} attribute
+On the Intel 386 with SSE support, the @code{sseregparm} attribute
+causes the compiler to pass up to 8 floating point arguments in
+SSE registers instead of on the stack. Functions that take a
+variable number of arguments will continue to pass all of their
+floating point arguments on the stack.
+
+@item force_align_arg_pointer
+@cindex @code{force_align_arg_pointer} attribute
+On the Intel x86, the @code{force_align_arg_pointer} attribute may be
+applied to individual function definitions, generating an alternate
+prologue and epilogue that realigns the runtime stack. This supports
+mixing legacy codes that run with a 4-byte aligned stack with modern
+codes that keep a 16-byte stack for SSE compatibility. The alternate
+prologue and epilogue are slower and bigger than the regular ones, and
+the alternate prologue requires a scratch register; this lowers the
+number of registers available if used in conjunction with the
+@code{regparm} attribute. The @code{force_align_arg_pointer}
+attribute is incompatible with nested functions; this is considered a
+hard error.
+
+@item returns_twice
+@cindex @code{returns_twice} attribute
+The @code{returns_twice} attribute tells the compiler that a function may
+return more than one time. The compiler will ensure that all registers
+are dead before calling such a function and will emit a warning about
+the variables that may be clobbered after the second return from the
+function. Examples of such functions are @code{setjmp} and @code{vfork}.
+The @code{longjmp}-like counterpart of such function, if any, might need
+to be marked with the @code{noreturn} attribute.
+
@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
+@cindex save all registers on the Blackfin, H8/300, H8/300H, and H8S
+Use this attribute on the Blackfin, 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.
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
+__attribute__ ((sentinel))
+is equivalent to
+__attribute__ ((sentinel(0)))
+@end smallexample
+
+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.
+
+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 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.
+This attribute affects the linkage of the declaration to which it is attached.
+There are four supported @var{visibility_type} values: default,
+hidden, protected or internal visibility.
@smallexample
void __attribute__ ((visibility ("protected")))
int i __attribute__ ((visibility ("hidden")));
@end smallexample
-See the ELF gABI for complete details, but the short story is:
+The possible values of @var{visibility_type} correspond to the
+visibility settings in the ELF gABI.
@table @dfn
-@c keep this list of visibilies in alphabetical order.
+@c keep this list of visibilities in alphabetical order.
@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.
+Default visibility is the normal case for the object file format.
+This value is available for the visibility attribute to override other
+options that may change the assumed visibility of entities.
+
+On ELF, default visibility means that the declaration is visible to other
+modules and, in shared libraries, means that the declared entity may be
+overridden.
+
+On Darwin, default visibility means that the declaration is visible to
+other modules.
+
+Default visibility corresponds to ``external linkage'' in the language.
@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.
+Hidden visibility indicates that the entity declared will have a new
+form of linkage, which we'll call ``hidden linkage''. Two
+declarations of an object with hidden linkage refer to the same object
+if they are in the same shared object.
@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.
+processor specific semantics. Unless otherwise specified by the
+psABI, GCC defines internal visibility to mean that a function is
+@emph{never} called from another module. Compare this with hidden
+functions which, while they cannot be referenced directly by other
+modules, can be referenced indirectly via function pointers. By
+indicating that a function 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.
@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.
+Protected visibility is like default visibility except that it
+indicates that references within the defining module will bind to the
+definition in that module. That is, the declared entity cannot be
+overridden by another module.
@end table
-Not all ELF targets support this attribute.
+All visibilities are supported on many, but not all, ELF targets
+(supported when the assembler supports the @samp{.visibility}
+pseudo-op). Default visibility is supported everywhere. Hidden
+visibility is supported on Darwin targets.
+
+The visibility attribute should be applied only to declarations which
+would otherwise have external linkage. The attribute should be applied
+consistently, so that the same entity should not be declared with
+different settings of the attribute.
+
+In C++, the visibility attribute applies to types as well as functions
+and objects, because in C++ types have linkage. A class must not have
+greater visibility than its non-static data member types and bases,
+and class members default to the visibility of their class. Also, a
+declaration without explicit visibility is limited to the visibility
+of its type.
+
+In C++, you can mark member functions and static member variables of a
+class with the visibility attribute. This is useful if if you know a
+particular method or static member variable should only be used from
+one shared object; then you can mark it hidden while the rest of the
+class has default visibility. Care must be taken to avoid breaking
+the One Definition Rule; for example, it is usually not useful to mark
+an inline method as hidden without marking the whole class as hidden.
+
+A C++ namespace declaration can also have the visibility attribute.
+This attribute applies only to the particular namespace body, not to
+other definitions of the same namespace; it is equivalent to using
+@samp{#pragma GCC visibility} before and after the namespace
+definition (@pxref{Visibility Pragmas}).
+
+In C++, if a template argument has limited visibility, this
+restriction is implicitly propagated to the template instantiation.
+Otherwise, template instantiations and specializations default to the
+visibility of their template.
+
+If both the template and enclosing class have explicit visibility, the
+visibility from the template is used.
@item warn_unused_result
@cindex @code{warn_unused_result} attribute
for ELF targets, and also for a.out targets when using the GNU assembler
and linker.
+@item weakref
+@itemx weakref ("@var{target}")
+@cindex @code{weakref} attribute
+The @code{weakref} attribute marks a declaration as a weak reference.
+Without arguments, it should be accompanied by an @code{alias} attribute
+naming the target symbol. Optionally, the @var{target} may be given as
+an argument to @code{weakref} itself. In either case, @code{weakref}
+implicitly marks the declaration as @code{weak}. Without a
+@var{target}, given as an argument to @code{weakref} or to @code{alias},
+@code{weakref} is equivalent to @code{weak}.
+
+@smallexample
+static int x() __attribute__ ((weakref ("y")));
+/* is equivalent to... */
+static int x() __attribute__ ((weak, weakref, alias ("y")));
+/* and to... */
+static int x() __attribute__ ((weakref));
+static int x() __attribute__ ((alias ("y")));
+@end smallexample
+
+A weak reference is an alias that does not by itself require a
+definition to be given for the target symbol. If the target symbol is
+only referenced through weak references, then the becomes a @code{weak}
+undefined symbol. If it is directly referenced, however, then such
+strong references prevail, and a definition will be required for the
+symbol, not necessarily in the same translation unit.
+
+The effect is equivalent to moving all references to the alias to a
+separate translation unit, renaming the alias to the aliased symbol,
+declaring it as weak, compiling the two separate translation units and
+performing a reloadable link on them.
+
+At present, a declaration to which @code{weakref} is attached can
+only be @code{static}.
+
+@item externally_visible
+@cindex @code{externally_visible} attribute.
+This attribute, attached to a global variable or function nullify
+effect of @option{-fwhole-program} command line option, so the object
+remain visible outside the current compilation unit
+
@end table
You can specify multiple attributes in a declaration by separating them
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},
@code{union} or @code{enum} specifier. It may go either immediately
after the @code{struct}, @code{union} or @code{enum} keyword, or after
-the closing brace. It is ignored if the content of the structure, union
-or enumerated type is not defined in the specifier in which the
-attribute specifier list is used---that is, in usages such as
-@code{struct __attribute__((foo)) bar} with no following opening brace.
+the closing brace. The former syntax is preferred.
Where attribute specifiers follow the closing brace, they are considered
to relate to the structure, union or enumerated type defined, not to any
enclosing declaration the type specifier appears in, and the type
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
/* @r{Old-style function definition.} */
int
-isroot (x) /* ??? lossage here ??? */
+isroot (x) /* @r{??? lossage here ???} */
uid_t x;
@{
return x == 0;
@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
@option{-fno-common} and @option{-fcommon} flags respectively.
main()
@{
- /* Initialize stack pointer */
+ /* @r{Initialize stack pointer} */
init_sp (stack + sizeof (stack));
- /* Initialize initialized data */
+ /* @r{Initialize initialized data} */
memcpy (&init_data, &data, &edata - &data);
- /* Turn on the serial ports */
+ /* @r{Turn on the serial ports} */
init_duart (&a);
init_duart (&b);
@}
int
main()
@{
- /* Read and write foo. All running
- copies see the same value. */
+ /* @r{Read and write foo. All running
+ copies see the same value.} */
return 0;
@}
@end smallexample
@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}.
Not all targets support this attribute.
-@item transparent_union
-This attribute, attached to a function parameter which is a union, means
-that the corresponding argument may have the type of any union member,
-but the argument is passed as if its type were that of the first union
-member. For more details see @xref{Type Attributes}. You can also use
-this attribute on a @code{typedef} for a union data type; then it
-applies to all function parameters with that type.
-
@item unused
This attribute, attached to a variable, means that the variable is meant
to be possibly unused. GCC will not produce a warning for this
is invalid even if the size of the structure is the same as the size of
the @code{int}.
+@item selectany
+The @code{selectany} attribute causes an initialized global variable to
+have link-once semantics. When multiple definitions of the variable are
+encountered by the linker, the first is selected and the remainder are
+discarded. Following usage by the Microsoft compiler, the linker is told
+@emph{not} to warn about size or content differences of the multiple
+definitions.
+
+Although the primary usage of this attribute is for POD types, the
+attribute can also be applied to global C++ objects that are initialized
+by a constructor. In this case, the static initialization and destruction
+code for the object is emitted in each translation defining the object,
+but the calls to the constructor and destructor are protected by a
+link-once guard variable.
+
+The @code{selectany} attribute is only available on Microsoft Windows
+targets. You can use @code{__declspec (selectany)} as a synonym for
+@code{__attribute__ ((selectany))} for compatibility with other
+compilers.
+
@item weak
The @code{weak} attribute is described in @xref{Function Attributes}.
@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})
addresses).
@end table
+@anchor{i386 Variable Attributes}
@subsection i386 Variable Attributes
Two attributes are currently defined for i386 configurations:
Currently @option{-m[no-]ms-bitfields} is provided for the Microsoft Windows X86
compilers to match the native Microsoft compiler.
-@end table
-@node Type Attributes
-@section Specifying Attributes of Types
-@cindex attribute of types
-@cindex type attributes
+The Microsoft structure layout algorithm is fairly simple with the exception
+of the bitfield packing:
-The keyword @code{__attribute__} allows you to specify special
-attributes of @code{struct} and @code{union} types when you define such
-types. This keyword is followed by an attribute specification inside
-double parentheses. Six attributes are currently defined for types:
-@code{aligned}, @code{packed}, @code{transparent_union}, @code{unused},
-@code{deprecated} and @code{may_alias}. Other attributes are defined for
-functions (@pxref{Function Attributes}) and for variables
-(@pxref{Variable Attributes}).
+The padding and alignment of members of structures and whether a bit field
+can straddle a storage-unit boundary
-You may also specify any one of these attributes with @samp{__}
-preceding and following its keyword. This allows you to use these
-attributes in header files without being concerned about a possible
-macro of the same name. For example, you may use @code{__aligned__}
-instead of @code{aligned}.
+@enumerate
+@item Structure members are stored sequentially in the order in which they are
+declared: the first member has the lowest memory address and the last member
+the highest.
+
+@item Every data object has an alignment-requirement. The alignment-requirement
+for all data except structures, unions, and arrays is either the size of the
+object or the current packing size (specified with either the aligned attribute
+or the pack pragma), whichever is less. For structures, unions, and arrays,
+the alignment-requirement is the largest alignment-requirement of its members.
+Every object is allocated an offset so that:
+
+offset % alignment-requirement == 0
+
+@item Adjacent bit fields are packed into the same 1-, 2-, or 4-byte allocation
+unit if the integral types are the same size and if the next bit field fits
+into the current allocation unit without crossing the boundary imposed by the
+common alignment requirements of the bit fields.
+@end enumerate
-You may specify the @code{aligned} and @code{transparent_union}
-attributes either in a @code{typedef} declaration or just past the
-closing curly brace of a complete enum, struct or union type
-@emph{definition} and the @code{packed} attribute only past the closing
-brace of a definition.
+Handling of zero-length bitfields:
-You may also specify attributes between the enum, struct or union
-tag and the name of the type rather than after the closing brace.
+MSVC interprets zero-length bitfields in the following ways:
-@xref{Attribute Syntax}, for details of the exact syntax for using
-attributes.
+@enumerate
+@item If a zero-length bitfield is inserted between two bitfields that would
+normally be coalesced, the bitfields will not be coalesced.
-@table @code
-@cindex @code{aligned} attribute
-@item aligned (@var{alignment})
-This attribute specifies a minimum alignment (in bytes) for variables
-of the specified type. For example, the declarations:
+For example:
@smallexample
-struct S @{ short f[3]; @} __attribute__ ((aligned (8)));
-typedef int more_aligned_int __attribute__ ((aligned (8)));
+struct
+ @{
+ unsigned long bf_1 : 12;
+ unsigned long : 0;
+ unsigned long bf_2 : 12;
+ @} t1;
@end smallexample
-@noindent
-force the compiler to insure (as far as it can) that each variable whose
-type is @code{struct S} or @code{more_aligned_int} will be allocated and
-aligned @emph{at least} on a 8-byte boundary. On a SPARC, having all
-variables of type @code{struct S} aligned to 8-byte boundaries allows
+The size of @code{t1} would be 8 bytes with the zero-length bitfield. If the
+zero-length bitfield were removed, @code{t1}'s size would be 4 bytes.
+
+@item If a zero-length bitfield is inserted after a bitfield, @code{foo}, and the
+alignment of the zero-length bitfield is greater than the member that follows it,
+@code{bar}, @code{bar} will be aligned as the type of the zero-length bitfield.
+
+For example:
+
+@smallexample
+struct
+ @{
+ char foo : 4;
+ short : 0;
+ char bar;
+ @} t2;
+
+struct
+ @{
+ char foo : 4;
+ short : 0;
+ double bar;
+ @} t3;
+@end smallexample
+
+For @code{t2}, @code{bar} will be placed at offset 2, rather than offset 1.
+Accordingly, the size of @code{t2} will be 4. For @code{t3}, the zero-length
+bitfield will not affect the alignment of @code{bar} or, as a result, the size
+of the structure.
+
+Taking this into account, it is important to note the following:
+
+@enumerate
+@item If a zero-length bitfield follows a normal bitfield, the type of the
+zero-length bitfield may affect the alignment of the structure as whole. For
+example, @code{t2} has a size of 4 bytes, since the zero-length bitfield follows a
+normal bitfield, and is of type short.
+
+@item Even if a zero-length bitfield is not followed by a normal bitfield, it may
+still affect the alignment of the structure:
+
+@smallexample
+struct
+ @{
+ char foo : 6;
+ long : 0;
+ @} t4;
+@end smallexample
+
+Here, @code{t4} will take up 4 bytes.
+@end enumerate
+
+@item Zero-length bitfields following non-bitfield members are ignored:
+
+@smallexample
+struct
+ @{
+ char foo;
+ long : 0;
+ char bar;
+ @} t5;
+@end smallexample
+
+Here, @code{t5} will take up 2 bytes.
+@end enumerate
+@end table
+
+@subsection PowerPC Variable Attributes
+
+Three attributes currently are defined for PowerPC configurations:
+@code{altivec}, @code{ms_struct} and @code{gcc_struct}.
+
+For full documentation of the struct attributes please see the
+documentation in the @xref{i386 Variable Attributes}, section.
+
+For documentation of @code{altivec} attribute please see the
+documentation in the @xref{PowerPC Type Attributes}, section.
+
+@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
+@cindex type attributes
+
+The keyword @code{__attribute__} allows you to specify special
+attributes of @code{struct} and @code{union} types when you define
+such types. This keyword is followed by an attribute specification
+inside double parentheses. Seven attributes are currently defined for
+types: @code{aligned}, @code{packed}, @code{transparent_union},
+@code{unused}, @code{deprecated}, @code{visibility}, and
+@code{may_alias}. Other attributes are defined for functions
+(@pxref{Function Attributes}) and for variables (@pxref{Variable
+Attributes}).
+
+You may also specify any one of these attributes with @samp{__}
+preceding and following its keyword. This allows you to use these
+attributes in header files without being concerned about a possible
+macro of the same name. For example, you may use @code{__aligned__}
+instead of @code{aligned}.
+
+You may specify type attributes either in a @code{typedef} declaration
+or in an enum, struct or union type declaration or definition.
+
+For an enum, struct or union type, you may specify attributes either
+between the enum, struct or union tag and the name of the type, or
+just past the closing curly brace of the @emph{definition}. The
+former syntax is preferred.
+
+@xref{Attribute Syntax}, for details of the exact syntax for using
+attributes.
+
+@table @code
+@cindex @code{aligned} attribute
+@item aligned (@var{alignment})
+This attribute specifies a minimum alignment (in bytes) for variables
+of the specified type. For example, the declarations:
+
+@smallexample
+struct S @{ short f[3]; @} __attribute__ ((aligned (8)));
+typedef int more_aligned_int __attribute__ ((aligned (8)));
+@end smallexample
+
+@noindent
+force the compiler to insure (as far as it can) that each variable whose
+type is @code{struct S} or @code{more_aligned_int} will be allocated and
+aligned @emph{at least} on a 8-byte boundary. On a SPARC, having all
+variables of type @code{struct S} aligned to 8-byte boundaries allows
the compiler to use the @code{ldd} and @code{std} (doubleword load and
store) instructions when copying one variable of type @code{struct S} to
another, thus improving run-time efficiency.
@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}
-definition, it indicates that the smallest integral type should be used.
+definition, specifies that each member (other than zero-width bitfields)
+of the structure or union is 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
Specifying this attribute for @code{struct} and @code{union} types is
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
int i;
@};
-struct my_packed_struct __attribute__ ((__packed__))
+struct __attribute__ ((__packed__)) my_packed_struct
@{
char c;
int i;
@option{-fstrict-aliasing}, which is on by default at @option{-O2} or
above in recent GCC versions.
+@item visibility
+In C++, attribute visibility (@pxref{Function Attributes}) can also be
+applied to class, struct, union and enum types. Unlike other type
+attributes, the attribute must appear between the initial keyword and
+the name of the type; it cannot appear after the body of the type.
+
+Note that the type visibility is applied to vague linkage entities
+associated with the class (vtable, typeinfo node, etc.). In
+particular, if a class is thrown as an exception in one shared object
+and caught in another, the class must have default visibility.
+Otherwise the two shared objects will be unable to use the same
+typeinfo node and exception handling will break.
+
+@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}.)
+
+@anchor{i386 Type Attributes}
@subsection i386 Type Attributes
Two attributes are currently defined for i386 configurations:
double parentheses: for example, @samp{__attribute__ ((aligned (16),
packed))}.
+@anchor{PowerPC Type Attributes}
+@subsection PowerPC Type Attributes
+
+Three attributes currently are defined for PowerPC configurations:
+@code{altivec}, @code{ms_struct} and @code{gcc_struct}.
+
+For full documentation of the struct attributes please see the
+documentation in the @xref{i386 Type Attributes}, section.
+
+The @code{altivec} attribute allows one to declare AltiVec vector data
+types supported by the AltiVec Programming Interface Manual. The
+attribute requires an argument to specify one of three vector types:
+@code{vector__}, @code{pixel__} (always followed by unsigned short),
+and @code{bool__} (always followed by unsigned).
+
+@smallexample
+__attribute__((altivec(vector__)))
+__attribute__((altivec(pixel__))) unsigned short
+__attribute__((altivec(bool__))) unsigned
+@end smallexample
+
+These attributes mainly are intended to support the @code{__vector},
+@code{__pixel}, and @code{__bool} AltiVec keywords.
+
@node Inline
@section An Inline Function is As Fast As a Macro
@cindex inline functions
the @samp{always_inline} attribute for the function, like this:
@smallexample
-/* Prototype. */
+/* @r{Prototype.} */
inline void foo (const char) __attribute__((always_inline));
@end smallexample
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
: "r" (test), "r"(new), "[result]"(old));
@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
@smallexample
asm volatile ("movc3 %0,%1,%2"
- : /* no outputs */
+ : /* @r{no outputs} */
: "g" (from), "g" (to), "g" (count)
: "r0", "r1", "r2", "r3", "r4", "r5");
@end smallexample
@samp{memory}. As an example, if you access ten bytes of a string, you
can use a memory input like:
-@example
+@smallexample
@{"m"( (@{ struct @{ char x[10]; @} *p = (void *)ptr ; *p; @}) )@}.
-@end example
+@end smallexample
Note that in the following example the memory input is necessary,
otherwise GCC might optimize the store to @code{x} away:
-@example
+@smallexample
int foo ()
@{
int x = 42;
int result;
asm ("magic stuff accessing an 'int' pointed to by '%1'"
"=&d" (r) : "a" (y), "m" (*y));
- return result;
+ return result;
@}
-@end example
+@end smallexample
You can put multiple assembler instructions together in a single
@code{asm} template, separated by the characters normally used in assembly
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:
@smallexample
@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:
@smallexample
-*(volatile int *)addr = foo;
-asm volatile ("eieio" : : );
+ 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
@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
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
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
may be dependent. In either case, @var{member} may consist of a single
identifier, or a sequence of member accesses and array references.
+@node Atomic Builtins
+@section Built-in functions for atomic memory access
+
+The following builtins are intended to be compatible with those described
+in the @cite{Intel Itanium Processor-specific Application Binary Interface},
+section 7.4. As such, they depart from the normal GCC practice of using
+the ``__builtin_'' prefix, and further that they are overloaded such that
+they work on multiple types.
+
+The definition given in the Intel documentation allows only for the use of
+the types @code{int}, @code{long}, @code{long long} as well as their unsigned
+counterparts. GCC will allow any integral scalar or pointer type that is
+1, 2, 4 or 8 bytes in length.
+
+Not all operations are supported by all target processors. If a particular
+operation cannot be implemented on the target processor, a warning will be
+generated and a call an external function will be generated. The external
+function will carry the same name as the builtin, with an additional suffix
+@samp{_@var{n}} where @var{n} is the size of the data type.
+
+@c ??? Should we have a mechanism to suppress this warning? This is almost
+@c useful for implementing the operation under the control of an external
+@c mutex.
+
+In most cases, these builtins are considered a @dfn{full barrier}. That is,
+no memory operand will be moved across the operation, either forward or
+backward. Further, instructions will be issued as necessary to prevent the
+processor from speculating loads across the operation and from queuing stores
+after the operation.
+
+All of the routines are are described in the Intel documentation to take
+``an optional list of variables protected by the memory barrier''. It's
+not clear what is meant by that; it could mean that @emph{only} the
+following variables are protected, or it could mean that these variables
+should in addition be protected. At present GCC ignores this list and
+protects all variables which are globally accessible. If in the future
+we make some use of this list, an empty list will continue to mean all
+globally accessible variables.
+
+@table @code
+@item @var{type} __sync_fetch_and_add (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_fetch_and_sub (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_fetch_and_or (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_fetch_and_and (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_fetch_and_xor (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_fetch_and_nand (@var{type} *ptr, @var{type} value, ...)
+@findex __sync_fetch_and_add
+@findex __sync_fetch_and_sub
+@findex __sync_fetch_and_or
+@findex __sync_fetch_and_and
+@findex __sync_fetch_and_xor
+@findex __sync_fetch_and_nand
+These builtins perform the operation suggested by the name, and
+returns the value that had previously been in memory. That is,
+
+@smallexample
+@{ tmp = *ptr; *ptr @var{op}= value; return tmp; @}
+@{ tmp = *ptr; *ptr = ~tmp & value; return tmp; @} // nand
+@end smallexample
+
+@item @var{type} __sync_add_and_fetch (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_sub_and_fetch (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_or_and_fetch (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_and_and_fetch (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_xor_and_fetch (@var{type} *ptr, @var{type} value, ...)
+@itemx @var{type} __sync_nand_and_fetch (@var{type} *ptr, @var{type} value, ...)
+@findex __sync_add_and_fetch
+@findex __sync_sub_and_fetch
+@findex __sync_or_and_fetch
+@findex __sync_and_and_fetch
+@findex __sync_xor_and_fetch
+@findex __sync_nand_and_fetch
+These builtins perform the operation suggested by the name, and
+return the new value. That is,
+
+@smallexample
+@{ *ptr @var{op}= value; return *ptr; @}
+@{ *ptr = ~*ptr & value; return *ptr; @} // nand
+@end smallexample
+
+@item bool __sync_bool_compare_and_swap (@var{type} *ptr, @var{type} oldval @var{type} newval, ...)
+@itemx @var{type} __sync_val_compare_and_swap (@var{type} *ptr, @var{type} oldval @var{type} newval, ...)
+@findex __sync_bool_compare_and_swap
+@findex __sync_val_compare_and_swap
+These builtins perform an atomic compare and swap. That is, if the current
+value of @code{*@var{ptr}} is @var{oldval}, then write @var{newval} into
+@code{*@var{ptr}}.
+
+The ``bool'' version returns true if the comparison is successful and
+@var{newval} was written. The ``val'' version returns the contents
+of @code{*@var{ptr}} before the operation.
+
+@item __sync_synchronize (...)
+@findex __sync_synchronize
+This builtin issues a full memory barrier.
+
+@item @var{type} __sync_lock_test_and_set (@var{type} *ptr, @var{type} value, ...)
+@findex __sync_lock_test_and_set
+This builtin, as described by Intel, is not a traditional test-and-set
+operation, but rather an atomic exchange operation. It writes @var{value}
+into @code{*@var{ptr}}, and returns the previous contents of
+@code{*@var{ptr}}.
+
+Many targets have only minimal support for such locks, and do not support
+a full exchange operation. In this case, a target may support reduced
+functionality here by which the @emph{only} valid value to store is the
+immediate constant 1. The exact value actually stored in @code{*@var{ptr}}
+is implementation defined.
+
+This builtin is not a full barrier, but rather an @dfn{acquire barrier}.
+This means that references after the builtin cannot move to (or be
+speculated to) before the builtin, but previous memory stores may not
+be globally visible yet, and previous memory loads may not yet be
+satisfied.
+
+@item void __sync_lock_release (@var{type} *ptr, ...)
+@findex __sync_lock_release
+This builtin releases the lock acquired by @code{__sync_lock_test_and_set}.
+Normally this means writing the constant 0 to @code{*@var{ptr}}.
+
+This builtin is not a full barrier, but rather a @dfn{release barrier}.
+This means that all previous memory stores are globally visible, and all
+previous memory loads have been satisfied, but following memory reads
+are not prevented from being speculated to before the barrier.
+@end table
+
+@node Object Size Checking
+@section Object Size Checking Builtins
+@findex __builtin_object_size
+@findex __builtin___memcpy_chk
+@findex __builtin___mempcpy_chk
+@findex __builtin___memmove_chk
+@findex __builtin___memset_chk
+@findex __builtin___strcpy_chk
+@findex __builtin___stpcpy_chk
+@findex __builtin___strncpy_chk
+@findex __builtin___strcat_chk
+@findex __builtin___strncat_chk
+@findex __builtin___sprintf_chk
+@findex __builtin___snprintf_chk
+@findex __builtin___vsprintf_chk
+@findex __builtin___vsnprintf_chk
+@findex __builtin___printf_chk
+@findex __builtin___vprintf_chk
+@findex __builtin___fprintf_chk
+@findex __builtin___vfprintf_chk
+
+GCC implements a limited buffer overflow protection mechanism
+that can prevent some buffer overflow attacks.
+
+@deftypefn {Built-in Function} {size_t} __builtin_object_size (void * @var{ptr}, int @var{type})
+is a built-in construct that returns a constant number of bytes from
+@var{ptr} to the end of the object @var{ptr} pointer points to
+(if known at compile time). @code{__builtin_object_size} never evaluates
+its arguments for side-effects. If there are any side-effects in them, it
+returns @code{(size_t) -1} for @var{type} 0 or 1 and @code{(size_t) 0}
+for @var{type} 2 or 3. If there are multiple objects @var{ptr} can
+point to and all of them are known at compile time, the returned number
+is the maximum of remaining byte counts in those objects if @var{type} & 2 is
+0 and minimum if nonzero. If it is not possible to determine which objects
+@var{ptr} points to at compile time, @code{__builtin_object_size} should
+return @code{(size_t) -1} for @var{type} 0 or 1 and @code{(size_t) 0}
+for @var{type} 2 or 3.
+
+@var{type} is an integer constant from 0 to 3. If the least significant
+bit is clear, objects are whole variables, if it is set, a closest
+surrounding subobject is considered the object a pointer points to.
+The second bit determines if maximum or minimum of remaining bytes
+is computed.
+
+@smallexample
+struct V @{ char buf1[10]; int b; char buf2[10]; @} var;
+char *p = &var.buf1[1], *q = &var.b;
+
+/* Here the object p points to is var. */
+assert (__builtin_object_size (p, 0) == sizeof (var) - 1);
+/* The subobject p points to is var.buf1. */
+assert (__builtin_object_size (p, 1) == sizeof (var.buf1) - 1);
+/* The object q points to is var. */
+assert (__builtin_object_size (q, 0)
+ == (char *) (&var + 1) - (char *) &var.b);
+/* The subobject q points to is var.b. */
+assert (__builtin_object_size (q, 1) == sizeof (var.b));
+@end smallexample
+@end deftypefn
+
+There are built-in functions added for many common string operation
+functions, e.g. for @code{memcpy} @code{__builtin___memcpy_chk}
+built-in is provided. This built-in has an additional last argument,
+which is the number of bytes remaining in object the @var{dest}
+argument points to or @code{(size_t) -1} if the size is not known.
+
+The built-in functions are optimized into the normal string functions
+like @code{memcpy} if the last argument is @code{(size_t) -1} or if
+it is known at compile time that the destination object will not
+be overflown. If the compiler can determine at compile time the
+object will be always overflown, it issues a warning.
+
+The intended use can be e.g.
+
+@smallexample
+#undef memcpy
+#define bos0(dest) __builtin_object_size (dest, 0)
+#define memcpy(dest, src, n) \
+ __builtin___memcpy_chk (dest, src, n, bos0 (dest))
+
+char *volatile p;
+char buf[10];
+/* It is unknown what object p points to, so this is optimized
+ into plain memcpy - no checking is possible. */
+memcpy (p, "abcde", n);
+/* Destination is known and length too. It is known at compile
+ time there will be no overflow. */
+memcpy (&buf[5], "abcde", 5);
+/* Destination is known, but the length is not known at compile time.
+ This will result in __memcpy_chk call that can check for overflow
+ at runtime. */
+memcpy (&buf[5], "abcde", n);
+/* Destination is known and it is known at compile time there will
+ be overflow. There will be a warning and __memcpy_chk call that
+ will abort the program at runtime. */
+memcpy (&buf[6], "abcde", 5);
+@end smallexample
+
+Such built-in functions are provided for @code{memcpy}, @code{mempcpy},
+@code{memmove}, @code{memset}, @code{strcpy}, @code{stpcpy}, @code{strncpy},
+@code{strcat} and @code{strncat}.
+
+There are also checking built-in functions for formatted output functions.
+@smallexample
+int __builtin___sprintf_chk (char *s, int flag, size_t os, const char *fmt, ...);
+int __builtin___snprintf_chk (char *s, size_t maxlen, int flag, size_t os,
+ const char *fmt, ...);
+int __builtin___vsprintf_chk (char *s, int flag, size_t os, const char *fmt,
+ va_list ap);
+int __builtin___vsnprintf_chk (char *s, size_t maxlen, int flag, size_t os,
+ const char *fmt, va_list ap);
+@end smallexample
+
+The added @var{flag} argument is passed unchanged to @code{__sprintf_chk}
+etc. functions and can contain implementation specific flags on what
+additional security measures the checking function might take, such as
+handling @code{%n} differently.
+
+The @var{os} argument is the object size @var{s} points to, like in the
+other built-in functions. There is a small difference in the behavior
+though, if @var{os} is @code{(size_t) -1}, the built-in functions are
+optimized into the non-checking functions only if @var{flag} is 0, otherwise
+the checking function is called with @var{os} argument set to
+@code{(size_t) -1}.
+
+In addition to this, there are checking built-in functions
+@code{__builtin___printf_chk}, @code{__builtin___vprintf_chk},
+@code{__builtin___fprintf_chk} and @code{__builtin___vfprintf_chk}.
+These have just one additional argument, @var{flag}, right before
+format string @var{fmt}. If the compiler is able to optimize them to
+@code{fputc} etc. functions, it will, otherwise the checking function
+should be called and the @var{flag} argument passed to it.
+
@node Other Builtins
@section Other built-in functions provided by GCC
@cindex built-in functions
@findex __builtin_islessequal
@findex __builtin_islessgreater
@findex __builtin_isunordered
+@findex __builtin_powi
+@findex __builtin_powif
+@findex __builtin_powil
@findex _Exit
@findex _exit
@findex abort
@findex cimag
@findex cimagf
@findex cimagl
+@findex clog
+@findex clogf
+@findex clogl
@findex conj
@findex conjf
@findex conjl
@findex sqrtl
@findex sscanf
@findex stpcpy
+@findex stpncpy
+@findex strcasecmp
@findex strcat
@findex strchr
@findex strcmp
@findex strfmon
@findex strftime
@findex strlen
+@findex strncasecmp
@findex strncat
@findex strncmp
@findex strncpy
+@findex strndup
@findex strpbrk
@findex strrchr
@findex strspn
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{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{toascii}, @code{y0f}, @code{y0l},
-@code{y0}, @code{y1f}, @code{y1l}, @code{y1}, @code{ynf}, @code{ynl} and
-@code{yn}
+@code{stpncpy}, @code{strcasecmp}, @code{strdup}, @code{strfmon},
+@code{strncasecmp}, @code{strndup}, @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{isblank}, @code{iswblank}, @code{lgammaf}, @code{lgammal},
-@code{lgamma}, @code{llabs}, @code{llrintf}, @code{llrintl},
+@code{cimagl}, @code{cimag}, @code{clogf}, @code{clogl}, @code{clog},
+@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},
@})
@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.
@deftypefn {Built-in Function} double __builtin_inf (void)
Similar to @code{__builtin_huge_val}, except a warning is generated
if the target floating-point format does not support infinities.
-This function is suitable for implementing the ISO C99 macro @code{INFINITY}.
+@end deftypefn
+
+@deftypefn {Built-in Function} _Decimal32 __builtin_infd32 (void)
+Similar to @code{__builtin_inf}, except the return type is @code{_Decimal32}.
+@end deftypefn
+
+@deftypefn {Built-in Function} _Decimal64 __builtin_infd64 (void)
+Similar to @code{__builtin_inf}, except the return type is @code{_Decimal64}.
+@end deftypefn
+
+@deftypefn {Built-in Function} _Decimal128 __builtin_infd128 (void)
+Similar to @code{__builtin_inf}, except the return type is @code{_Decimal128}.
@end deftypefn
@deftypefn {Built-in Function} float __builtin_inff (void)
Similar to @code{__builtin_inf}, except the return type is @code{float}.
+This function is suitable for implementing the ISO C99 macro @code{INFINITY}.
@end deftypefn
@deftypefn {Built-in Function} {long double} __builtin_infl (void)
in the significand such that the least significant bit of the number
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 all of which would have been
+consumed by strtol, is evaluated early enough that it is considered a
+compile-time constant.
+@end deftypefn
+
+@deftypefn {Built-in Function} _Decimal32 __builtin_nand32 (const char *str)
+Similar to @code{__builtin_nan}, except the return type is @code{_Decimal32}.
+@end deftypefn
+
+@deftypefn {Built-in Function} _Decimal64 __builtin_nand64 (const char *str)
+Similar to @code{__builtin_nan}, except the return type is @code{_Decimal64}.
+@end deftypefn
-This function, if given a string literal, is evaluated early enough
-that it is considered a compile-time constant.
+@deftypefn {Built-in Function} _Decimal128 __builtin_nand128 (const char *str)
+Similar to @code{__builtin_nan}, except the return type is @code{_Decimal128}.
@end deftypefn
@deftypefn {Built-in Function} float __builtin_nanf (const char *str)
@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
+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
@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
@code{unsigned long long}.
@end deftypefn
+@deftypefn {Built-in Function} double __builtin_powi (double, int)
+Returns the first argument raised to the power of the second. Unlike the
+@code{pow} function no guarantees about precision and rounding are made.
+@end deftypefn
+
+@deftypefn {Built-in Function} float __builtin_powif (float, int)
+Similar to @code{__builtin_powi}, except the argument and return types
+are @code{float}.
+@end deftypefn
+
+@deftypefn {Built-in Function} {long double} __builtin_powil (long double, int)
+Similar to @code{__builtin_powi}, except the argument and return types
+are @code{long double}.
+@end deftypefn
+
@node Target Builtins
@section Built-in Functions Specific to Particular Target Machines
@menu
* Alpha Built-in Functions::
* ARM Built-in Functions::
+* Blackfin Built-in Functions::
+* FR-V Built-in Functions::
* X86 Built-in Functions::
+* MIPS DSP Built-in Functions::
+* MIPS Paired-Single Support::
* PowerPC AltiVec Built-in Functions::
+* SPARC VIS Built-in Functions::
@end menu
@node Alpha Built-in Functions
long long __builtin_arm_wzero ()
@end smallexample
+@node Blackfin Built-in Functions
+@subsection Blackfin Built-in Functions
+
+Currently, there are two Blackfin-specific built-in functions. These are
+used for generating @code{CSYNC} and @code{SSYNC} machine insns without
+using inline assembly; by using these built-in functions the compiler can
+automatically add workarounds for hardware errata involving these
+instructions. These functions are named as follows:
+
+@smallexample
+void __builtin_bfin_csync (void)
+void __builtin_bfin_ssync (void)
+@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::
+* Raw read/write 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 Raw read/write Functions
+@subsubsection Raw read/write Functions
+
+This sections describes built-in functions related to read and write
+instructions to access memory. These functions generate
+@code{membar} instructions to flush the I/O load and stores where
+appropriate, as described in Fujitsu's manual described above.
+
+@table @code
+
+@item unsigned char __builtin_read8 (void *@var{data})
+@item unsigned short __builtin_read16 (void *@var{data})
+@item unsigned long __builtin_read32 (void *@var{data})
+@item unsigned long long __builtin_read64 (void *@var{data})
+
+@item void __builtin_write8 (void *@var{data}, unsigned char @var{datum})
+@item void __builtin_write16 (void *@var{data}, unsigned short @var{datum})
+@item void __builtin_write32 (void *@var{data}, unsigned long @var{datum})
+@item void __builtin_write64 (void *@var{data}, unsigned long long @var{datum})
+@end table
+
+@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
These built-in functions are available for the i386 and x86-64 family
of computers, depending on the command-line switches used.
+Note that, if you specify command-line switches such as @option{-msse},
+the compiler could use the extended instruction sets even if the built-ins
+are not used explicitly in the program. For this reason, applications
+which perform runtime CPU detection must compile separate files for each
+supported architecture, using the appropriate flags. In particular,
+the file containing the CPU detection code should be compiled without
+these options.
+
The following machine modes are available for use with MMX built-in functions
(@pxref{Vector Extensions}): @code{V2SI} for a vector of two 32-bit integers,
@code{V4HI} for a vector of four 16-bit integers, and @code{V8QI} for a
v2si __builtin_ia32_pswapdsi (v2si)
@end smallexample
-@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.
+@node MIPS DSP Built-in Functions
+@subsection MIPS DSP Built-in Functions
-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.
+The MIPS DSP Application-Specific Extension (ASE) includes new
+instructions that are designed to improve the performance of DSP and
+media applications. It provides instructions that operate on packed
+8-bit integer data, Q15 fractional data and Q31 fractional data.
-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.
+GCC supports MIPS DSP 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{-mdsp} command-line option.
-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:
+At present, GCC only provides support for operations on 32-bit
+vectors. The vector type associated with 8-bit integer data is
+usually called @code{v4i8} and the vector type associated with Q15 is
+usually called @code{v2q15}. They can be defined in C as follows:
+
+@smallexample
+typedef char v4i8 __attribute__ ((vector_size(4)));
+typedef short v2q15 __attribute__ ((vector_size(4)));
+@end smallexample
+
+@code{v4i8} and @code{v2q15} values are initialized in the same way as
+aggregates. For example:
+
+@smallexample
+v4i8 a = @{1, 2, 3, 4@};
+v4i8 b;
+b = (v4i8) @{5, 6, 7, 8@};
+
+v2q15 c = @{0x0fcb, 0x3a75@};
+v2q15 d;
+d = (v2q15) @{0.1234 * 0x1.0p15, 0.4567 * 0x1.0p15@};
+@end smallexample
+
+@emph{Note:} The CPU's endianness determines the order in which values
+are packed. On little-endian targets, the first value is the least
+significant and the last value is the most significant. The opposite
+order applies to big-endian targets. For example, the code above will
+set the lowest byte of @code{a} to @code{1} on little-endian targets
+and @code{4} on big-endian targets.
+
+@emph{Note:} Q15 and Q31 values must be initialized with their integer
+representation. As shown in this example, the integer representation
+of a Q15 value can be obtained by multiplying the fractional value by
+@code{0x1.0p15}. The equivalent for Q31 values is to multiply by
+@code{0x1.0p31}.
+
+The table below lists the @code{v4i8} and @code{v2q15} operations for which
+hardware support exists. @code{a} and @code{b} are @code{v4i8} values,
+and @code{c} and @code{d} are @code{v2q15} values.
+
+@multitable @columnfractions .50 .50
+@item C code @tab MIPS instruction
+@item @code{a + b} @tab @code{addu.qb}
+@item @code{c + d} @tab @code{addq.ph}
+@item @code{a - b} @tab @code{subu.qb}
+@item @code{c - d} @tab @code{subq.ph}
+@end multitable
+
+It is easier to describe the DSP built-in functions if we first define
+the following types:
+
+@smallexample
+typedef int q31;
+typedef int i32;
+typedef long long a64;
+@end smallexample
+
+@code{q31} and @code{i32} are actually the same as @code{int}, but we
+use @code{q31} to indicate a Q31 fractional value and @code{i32} to
+indicate a 32-bit integer value. Similarly, @code{a64} is the same as
+@code{long long}, but we use @code{a64} to indicate values that will
+be placed in one of the four DSP accumulators (@code{$ac0},
+@code{$ac1}, @code{$ac2} or @code{$ac3}).
+
+Also, some built-in functions prefer or require immediate numbers as
+parameters, because the corresponding DSP instructions accept both immediate
+numbers and register operands, or accept immediate numbers only. The
+immediate parameters are listed as follows.
+
+@smallexample
+imm0_7: 0 to 7.
+imm0_15: 0 to 15.
+imm0_31: 0 to 31.
+imm0_63: 0 to 63.
+imm0_255: 0 to 255.
+imm_n32_31: -32 to 31.
+imm_n512_511: -512 to 511.
+@end smallexample
+
+The following built-in functions map directly to a particular MIPS DSP
+instruction. Please refer to the architecture specification
+for details on what each instruction does.
+
+@smallexample
+v2q15 __builtin_mips_addq_ph (v2q15, v2q15)
+v2q15 __builtin_mips_addq_s_ph (v2q15, v2q15)
+q31 __builtin_mips_addq_s_w (q31, q31)
+v4i8 __builtin_mips_addu_qb (v4i8, v4i8)
+v4i8 __builtin_mips_addu_s_qb (v4i8, v4i8)
+v2q15 __builtin_mips_subq_ph (v2q15, v2q15)
+v2q15 __builtin_mips_subq_s_ph (v2q15, v2q15)
+q31 __builtin_mips_subq_s_w (q31, q31)
+v4i8 __builtin_mips_subu_qb (v4i8, v4i8)
+v4i8 __builtin_mips_subu_s_qb (v4i8, v4i8)
+i32 __builtin_mips_addsc (i32, i32)
+i32 __builtin_mips_addwc (i32, i32)
+i32 __builtin_mips_modsub (i32, i32)
+i32 __builtin_mips_raddu_w_qb (v4i8)
+v2q15 __builtin_mips_absq_s_ph (v2q15)
+q31 __builtin_mips_absq_s_w (q31)
+v4i8 __builtin_mips_precrq_qb_ph (v2q15, v2q15)
+v2q15 __builtin_mips_precrq_ph_w (q31, q31)
+v2q15 __builtin_mips_precrq_rs_ph_w (q31, q31)
+v4i8 __builtin_mips_precrqu_s_qb_ph (v2q15, v2q15)
+q31 __builtin_mips_preceq_w_phl (v2q15)
+q31 __builtin_mips_preceq_w_phr (v2q15)
+v2q15 __builtin_mips_precequ_ph_qbl (v4i8)
+v2q15 __builtin_mips_precequ_ph_qbr (v4i8)
+v2q15 __builtin_mips_precequ_ph_qbla (v4i8)
+v2q15 __builtin_mips_precequ_ph_qbra (v4i8)
+v2q15 __builtin_mips_preceu_ph_qbl (v4i8)
+v2q15 __builtin_mips_preceu_ph_qbr (v4i8)
+v2q15 __builtin_mips_preceu_ph_qbla (v4i8)
+v2q15 __builtin_mips_preceu_ph_qbra (v4i8)
+v4i8 __builtin_mips_shll_qb (v4i8, imm0_7)
+v4i8 __builtin_mips_shll_qb (v4i8, i32)
+v2q15 __builtin_mips_shll_ph (v2q15, imm0_15)
+v2q15 __builtin_mips_shll_ph (v2q15, i32)
+v2q15 __builtin_mips_shll_s_ph (v2q15, imm0_15)
+v2q15 __builtin_mips_shll_s_ph (v2q15, i32)
+q31 __builtin_mips_shll_s_w (q31, imm0_31)
+q31 __builtin_mips_shll_s_w (q31, i32)
+v4i8 __builtin_mips_shrl_qb (v4i8, imm0_7)
+v4i8 __builtin_mips_shrl_qb (v4i8, i32)
+v2q15 __builtin_mips_shra_ph (v2q15, imm0_15)
+v2q15 __builtin_mips_shra_ph (v2q15, i32)
+v2q15 __builtin_mips_shra_r_ph (v2q15, imm0_15)
+v2q15 __builtin_mips_shra_r_ph (v2q15, i32)
+q31 __builtin_mips_shra_r_w (q31, imm0_31)
+q31 __builtin_mips_shra_r_w (q31, i32)
+v2q15 __builtin_mips_muleu_s_ph_qbl (v4i8, v2q15)
+v2q15 __builtin_mips_muleu_s_ph_qbr (v4i8, v2q15)
+v2q15 __builtin_mips_mulq_rs_ph (v2q15, v2q15)
+q31 __builtin_mips_muleq_s_w_phl (v2q15, v2q15)
+q31 __builtin_mips_muleq_s_w_phr (v2q15, v2q15)
+a64 __builtin_mips_dpau_h_qbl (a64, v4i8, v4i8)
+a64 __builtin_mips_dpau_h_qbr (a64, v4i8, v4i8)
+a64 __builtin_mips_dpsu_h_qbl (a64, v4i8, v4i8)
+a64 __builtin_mips_dpsu_h_qbr (a64, v4i8, v4i8)
+a64 __builtin_mips_dpaq_s_w_ph (a64, v2q15, v2q15)
+a64 __builtin_mips_dpaq_sa_l_w (a64, q31, q31)
+a64 __builtin_mips_dpsq_s_w_ph (a64, v2q15, v2q15)
+a64 __builtin_mips_dpsq_sa_l_w (a64, q31, q31)
+a64 __builtin_mips_mulsaq_s_w_ph (a64, v2q15, v2q15)
+a64 __builtin_mips_maq_s_w_phl (a64, v2q15, v2q15)
+a64 __builtin_mips_maq_s_w_phr (a64, v2q15, v2q15)
+a64 __builtin_mips_maq_sa_w_phl (a64, v2q15, v2q15)
+a64 __builtin_mips_maq_sa_w_phr (a64, v2q15, v2q15)
+i32 __builtin_mips_bitrev (i32)
+i32 __builtin_mips_insv (i32, i32)
+v4i8 __builtin_mips_repl_qb (imm0_255)
+v4i8 __builtin_mips_repl_qb (i32)
+v2q15 __builtin_mips_repl_ph (imm_n512_511)
+v2q15 __builtin_mips_repl_ph (i32)
+void __builtin_mips_cmpu_eq_qb (v4i8, v4i8)
+void __builtin_mips_cmpu_lt_qb (v4i8, v4i8)
+void __builtin_mips_cmpu_le_qb (v4i8, v4i8)
+i32 __builtin_mips_cmpgu_eq_qb (v4i8, v4i8)
+i32 __builtin_mips_cmpgu_lt_qb (v4i8, v4i8)
+i32 __builtin_mips_cmpgu_le_qb (v4i8, v4i8)
+void __builtin_mips_cmp_eq_ph (v2q15, v2q15)
+void __builtin_mips_cmp_lt_ph (v2q15, v2q15)
+void __builtin_mips_cmp_le_ph (v2q15, v2q15)
+v4i8 __builtin_mips_pick_qb (v4i8, v4i8)
+v2q15 __builtin_mips_pick_ph (v2q15, v2q15)
+v2q15 __builtin_mips_packrl_ph (v2q15, v2q15)
+i32 __builtin_mips_extr_w (a64, imm0_31)
+i32 __builtin_mips_extr_w (a64, i32)
+i32 __builtin_mips_extr_r_w (a64, imm0_31)
+i32 __builtin_mips_extr_s_h (a64, i32)
+i32 __builtin_mips_extr_rs_w (a64, imm0_31)
+i32 __builtin_mips_extr_rs_w (a64, i32)
+i32 __builtin_mips_extr_s_h (a64, imm0_31)
+i32 __builtin_mips_extr_r_w (a64, i32)
+i32 __builtin_mips_extp (a64, imm0_31)
+i32 __builtin_mips_extp (a64, i32)
+i32 __builtin_mips_extpdp (a64, imm0_31)
+i32 __builtin_mips_extpdp (a64, i32)
+a64 __builtin_mips_shilo (a64, imm_n32_31)
+a64 __builtin_mips_shilo (a64, i32)
+a64 __builtin_mips_mthlip (a64, i32)
+void __builtin_mips_wrdsp (i32, imm0_63)
+i32 __builtin_mips_rddsp (imm0_63)
+i32 __builtin_mips_lbux (void *, i32)
+i32 __builtin_mips_lhx (void *, i32)
+i32 __builtin_mips_lwx (void *, i32)
+i32 __builtin_mips_bposge32 (void)
+@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
- vec_add ((vector signed int)@{1, 2, 3, 4@}, foo);
+v2sf a = @{1.5, 9.1@};
+v2sf b;
+float e, f;
+b = (v2sf) @{e, f@};
@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.
+@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.
-@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.
+@menu
+* Paired-Single Arithmetic::
+* Paired-Single Built-in Functions::
+* MIPS-3D Built-in Functions::
+@end menu
-@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);
+@node Paired-Single Arithmetic
+@subsubsection Paired-Single Arithmetic
-vector signed char vec_abss (vector signed char, vector signed char);
-vector signed short vec_abss (vector signed short, vector signed short);
+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.
-vector signed char vec_add (vector signed char, vector signed char);
-vector unsigned char vec_add (vector signed char, vector unsigned char);
+@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
-vector unsigned char vec_add (vector unsigned char, vector signed char);
+Note that the multiply-accumulate instructions can be disabled
+using the command-line option @code{-mno-fused-madd}.
-vector unsigned char vec_add (vector unsigned char,
- vector unsigned char);
-vector signed short vec_add (vector signed short, vector signed short);
-vector unsigned short vec_add (vector signed short,
- vector unsigned short);
-vector unsigned short vec_add (vector unsigned short,
- vector signed short);
-vector unsigned short vec_add (vector unsigned short,
- vector unsigned short);
-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 unsigned int, vector unsigned int);
-vector float vec_add (vector float, vector float);
+@node Paired-Single Built-in Functions
+@subsubsection Paired-Single Built-in Functions
-vector unsigned int vec_addc (vector unsigned int, vector unsigned int);
+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.
-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 unsigned char,
- vector unsigned char);
-vector signed char vec_adds (vector signed char, vector signed char);
-vector unsigned short vec_adds (vector signed short,
- vector unsigned short);
-vector unsigned short vec_adds (vector unsigned short,
- vector signed short);
-vector unsigned short vec_adds (vector unsigned short,
- vector unsigned short);
-vector signed short vec_adds (vector signed short, vector signed short);
+@table @code
+@item v2sf __builtin_mips_pll_ps (v2sf, v2sf)
+Pair lower lower (@code{pll.ps}).
-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 unsigned int, vector unsigned int);
+@item v2sf __builtin_mips_pul_ps (v2sf, v2sf)
+Pair upper lower (@code{pul.ps}).
-vector signed int vec_adds (vector signed int, vector signed int);
+@item v2sf __builtin_mips_plu_ps (v2sf, v2sf)
+Pair lower upper (@code{plu.ps}).
-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 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 unsigned int, vector unsigned int);
-vector signed short vec_and (vector signed short, vector signed short);
-vector unsigned short vec_and (vector signed short,
- vector unsigned short);
-vector unsigned short vec_and (vector unsigned short,
- vector signed short);
-vector unsigned short vec_and (vector unsigned short,
- vector unsigned short);
-vector signed char vec_and (vector signed char, vector signed char);
-vector unsigned char vec_and (vector signed char, vector unsigned char);
+@item v2sf __builtin_mips_puu_ps (v2sf, v2sf)
+Pair upper upper (@code{puu.ps}).
-vector unsigned char vec_and (vector unsigned char, vector signed char);
+@item v2sf __builtin_mips_cvt_ps_s (float, float)
+Convert pair to paired single (@code{cvt.ps.s}).
-vector unsigned char vec_and (vector unsigned char,
- vector unsigned char);
+@item float __builtin_mips_cvt_s_pl (v2sf)
+Convert pair lower to single (@code{cvt.s.pl}).
-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 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 unsigned int, vector unsigned int);
+@item float __builtin_mips_cvt_s_pu (v2sf)
+Convert pair upper to single (@code{cvt.s.pu}).
-vector signed short vec_andc (vector signed short, vector signed short);
+@item v2sf __builtin_mips_abs_ps (v2sf)
+Absolute value (@code{abs.ps}).
-vector unsigned short vec_andc (vector signed short,
- vector unsigned short);
-vector unsigned short vec_andc (vector unsigned short,
- vector signed short);
-vector unsigned short vec_andc (vector unsigned short,
- vector unsigned short);
-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 unsigned char,
- vector unsigned char);
+@item v2sf __builtin_mips_alnv_ps (v2sf, v2sf, int)
+Align variable (@code{alnv.ps}).
-vector unsigned char vec_avg (vector unsigned char,
- vector unsigned char);
-vector signed char vec_avg (vector signed char, vector signed char);
-vector unsigned short vec_avg (vector unsigned short,
- vector unsigned short);
-vector signed short vec_avg (vector signed short, vector signed short);
-vector unsigned int vec_avg (vector unsigned int, vector unsigned int);
-vector signed int vec_avg (vector signed int, vector signed int);
+@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
-vector float vec_ceil (vector float);
+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}.
-vector signed int vec_cmpb (vector float, vector float);
+@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}).
-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);
+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
+
+@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}).
+
+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:
+
+@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
+
+@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 @code{movt} functions return the value @var{x} computed by:
+
+@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
+
+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
+
+GCC's implementation of the high-level language interface available from
+C and C++ code differs from Motorola's documentation in several ways.
+
+@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.
+
+@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 @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
-vector signed int vec_cmpge (vector float, vector float);
+@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.
+
+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.
+
+Arguments that are documented as @code{const int} require literal
+integral values within the range required for that operation.
+
+@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 signed char vec_cmpgt (vector unsigned 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 char vec_cmpgt (vector signed char, vector signed char);
-vector signed short vec_cmpgt (vector unsigned short,
+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 bool 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 unsigned short vec_add (vector unsigned 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 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 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 bool short,
+ vector unsigned short);
+vector unsigned short vec_adds (vector unsigned 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 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_cmple (vector float, vector float);
+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 signed char vec_cmplt (vector unsigned char,
+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 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 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 bool short,
+ vector unsigned short);
+vector unsigned short vec_and (vector unsigned 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 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 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 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 bool short,
+ vector unsigned short);
+vector unsigned short vec_andc (vector unsigned 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 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 char vec_avg (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 signed char vec_avg (vector signed char, vector signed char);
+vector unsigned short vec_avg (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 signed short vec_avg (vector signed short, vector signed short);
+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 float vec_ctf (vector unsigned int, const char);
-vector float vec_ctf (vector signed int, const char);
+vector unsigned int vec_vavguw (vector unsigned int,
+ vector unsigned int);
+
+vector signed short vec_vavgsh (vector signed short,
+ vector signed short);
-vector signed int vec_cts (vector float, const char);
+vector unsigned short vec_vavguh (vector unsigned short,
+ vector unsigned short);
+
+vector signed char vec_vavgsb (vector signed char, vector signed char);
-vector unsigned int vec_ctu (vector float, const char);
+vector unsigned char vec_vavgub (vector unsigned char,
+ vector unsigned char);
-void vec_dss (const char);
+vector float vec_ceil (vector float);
+
+vector signed int vec_cmpb (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 bool int vec_vcmpeqfp (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 bool short vec_vcmpequh (vector signed short,
+ vector signed short);
+vector bool short vec_vcmpequh (vector unsigned short,
+ vector unsigned short);
+
+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_vcfsx (vector signed int, const int);
+
+vector float vec_vcfux (vector unsigned int, const int);
+
+vector signed int vec_cts (vector float, const int);
+
+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 unsigned char vec_min (vector signed char, vector unsigned char);
+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 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_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 char vec_splat_s8 (const char);
+vector signed char vec_splat_s8 (const int);
-vector signed short vec_splat_s16 (const char);
+vector signed short vec_splat_s16 (const int);
-vector signed int vec_splat_s32 (const char);
+vector signed int vec_splat_s32 (const int);
-vector unsigned char vec_splat_u8 (const char);
+vector unsigned char vec_splat_u8 (const int);
-vector unsigned short vec_splat_u16 (const char);
+vector unsigned short vec_splat_u16 (const int);
-vector unsigned int vec_splat_u32 (const char);
+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);
+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
+
+@node SPARC VIS Built-in Functions
+@subsection SPARC VIS Built-in Functions
+
+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_nan (vector float);
-
-vector signed int vec_any_ne (vector signed char, vector unsigned char);
+@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)));
-vector signed int vec_any_ne (vector signed char, vector signed char);
-vector signed int vec_any_ne (vector unsigned char, vector signed char);
+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);
-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);
+v4hi __builtin_vis_fexpand (v4qi);
-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);
+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);
-vector signed int vec_any_ne (vector float, vector float);
+v4qi __builtin_vis_fpack16 (v4hi);
+v8qi __builtin_vis_fpack32 (v2si, v2si);
+v2hi __builtin_vis_fpackfix (v2si);
+v8qi __builtin_vis_fpmerge (v4qi, v4qi);
-vector signed int vec_any_nge (vector float, vector float);
+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
@menu
* ARM Pragmas::
+* M32C Pragmas::
* RS/6000 and PowerPC Pragmas::
* Darwin Pragmas::
+* Solaris Pragmas::
* Symbol-Renaming Pragmas::
+* Structure-Packing Pragmas::
+* Weak Pragmas::
+* Diagnostic Pragmas::
+* Visibility Pragmas::
@end menu
@node ARM Pragmas
subsequent functions.
@end table
+@node M32C Pragmas
+@subsection M32C Pragmas
+
+@table @code
+@item memregs @var{number}
+@cindex pragma, memregs
+Overrides the command line option @code{-memregs=} for the current
+file. Use with care! This pragma must be before any function in the
+file, and mixing different memregs values in different objects may
+make them incompatible. This pragma is useful when a
+performance-critical function uses a memreg for temporary values,
+as it may allow you to reduce the number of memregs used.
+
+@end table
+
@node RS/6000 and PowerPC Pragmas
@subsection RS/6000 and PowerPC Pragmas
anywhere within the variables' scopes.
@end table
+@node Solaris Pragmas
+@subsection Solaris Pragmas
+
+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 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.
+
+@end table
+
@node Symbol-Renaming Pragmas
@subsection Symbol-Renaming Pragmas
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).
+available (currently only on Tru64 UNIX)@.
@end table
These pragmas and the asm labels extension interact in a complicated
way of knowing that that happened.)
@end enumerate
+@node Structure-Packing Pragmas
+@subsection Structure-Packing Pragmas
+
+For compatibility with Win32, GCC supports a set of @code{#pragma}
+directives which change the maximum alignment of members of structures
+(other than zero-width bitfields), 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
+
+Some targets, e.g. i386 and powerpc, support the @code{ms_struct}
+@code{#pragma} which lays out a structure as the documented
+@code{__attribute__ ((ms_struct))}.
+@enumerate
+@item @code{#pragma ms_struct on} turns on the layout for structures
+declared.
+@item @code{#pragma ms_struct off} turns off the layout for structures
+declared.
+@item @code{#pragma ms_struct reset} goes back to the default layout.
+@end enumerate
+
+@node Weak Pragmas
+@subsection Weak Pragmas
+
+For compatibility with SVR4, GCC supports a set of @code{#pragma}
+directives for declaring symbols to be weak, and defining weak
+aliases.
+
+@table @code
+@item #pragma weak @var{symbol}
+@cindex pragma, weak
+This pragma declares @var{symbol} to be weak, as if the declaration
+had the attribute of the same name. The pragma may appear before
+or after the declaration of @var{symbol}, but must appear before
+either its first use or its definition. It is not an error for
+@var{symbol} to never be defined at all.
+
+@item #pragma weak @var{symbol1} = @var{symbol2}
+This pragma declares @var{symbol1} to be a weak alias of @var{symbol2}.
+It is an error if @var{symbol2} is not defined in the current
+translation unit.
+@end table
+
+@node Diagnostic Pragmas
+@subsection Diagnostic Pragmas
+
+GCC allows the user to selectively enable or disable certain types of
+diagnostics, and change the kind of the diagnostic. For example, a
+project's policy might require that all sources compile with
+@option{-Werror} but certain files might have exceptions allowing
+specific types of warnings. Or, a project might selectively enable
+diagnostics and treat them as errors depending on which preprocessor
+macros are defined.
+
+@table @code
+@item #pragma GCC diagnostic @var{kind} @var{option}
+@cindex pragma, diagnostic
+
+Modifies the disposition of a diagnostic. Note that not all
+diagnostics are modifyiable; at the moment only warnings (normally
+controlled by @samp{-W...}) can be controlled, and not all of them.
+Use @option{-fdiagnostics-show-option} to determine which diagnostics
+are controllable and which option controls them.
+
+@var{kind} is @samp{error} to treat this diagnostic as an error,
+@samp{warning} to treat it like a warning (even if @option{-Werror} is
+in effect), or @samp{ignored} if the diagnostic is to be ignored.
+@var{option} is a double quoted string which matches the command line
+option.
+
+@example
+#pragma GCC diagnostic warning "-Wformat"
+#pragma GCC diagnostic error "-Walways-true"
+#pragma GCC diagnostic ignored "-Walways-true"
+@end example
+
+Note that these pragmas override any command line options. Also,
+while it is syntactically valid to put these pragmas anywhere in your
+sources, the only supported location for them is before any data or
+functions are defined. Doing otherwise may result in unpredictable
+results depending on how the optimizer manages your sources. If the
+same option is listed multiple times, the last one specified is the
+one that is in effect. This pragma is not intended to be a general
+purpose replacement for command line options, but for implementing
+strict control over project policies.
+
+@end table
+
+@node Visibility Pragmas
+@subsection Visibility Pragmas
+
+@table @code
+@item #pragma GCC visibility push(@var{visibility})
+@itemx #pragma GCC visibility pop
+@cindex pragma, visibility
+
+This pragma allows the user to set the visibility for multiple
+declarations without having to give each a visibility attribute
+@xref{Function Attributes}, for more information about visibility and
+the attribute syntax.
+
+In C++, @samp{#pragma GCC visibility} affects only namespace-scope
+declarations. Class members and template specializations are not
+affected; if you want to override the visibility for a particular
+member or instantiation, you must use an attribute.
+
+@end table
+
@node Unnamed Fields
-@section Unnamed struct/union fields within structs/unions.
+@section Unnamed struct/union fields within structs/unions
@cindex struct
@cindex union
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
Predefined Macros,cpp,The GNU C Preprocessor}).
@menu
-* Min and Max:: C++ Minimum and maximum operators.
* Volatiles:: What constitutes an access to a volatile object.
* Restricted Pointers:: C99 restricted pointers and references.
* Vague Linkage:: Where G++ puts inlines, vtables and such.
* Bound member functions:: You can extract a function pointer to the
method denoted by a @samp{->*} or @samp{.*} expression.
* C++ Attributes:: Variable, function, and type attributes for C++ only.
-* Strong Using:: Strong using-directives for namespace composition.
+* Namespace Association:: Strong using-directives for namespace association.
* Java Exceptions:: Tweaking exception handling to work with Java.
* Deprecated Features:: Things will disappear from g++.
* Backwards Compatibility:: Compatibilities with earlier definitions of C++.
@end menu
-@node Min and Max
-@section Minimum and Maximum Operators in C++
-
-It is very convenient to have operators which return the ``minimum'' or the
-``maximum'' of two arguments. In GNU C++ (but not in GNU C),
-
-@table @code
-@item @var{a} <? @var{b}
-@findex <?
-@cindex minimum operator
-is the @dfn{minimum}, returning the smaller of the numeric values
-@var{a} and @var{b};
-
-@item @var{a} >? @var{b}
-@findex >?
-@cindex maximum operator
-is the @dfn{maximum}, returning the larger of the numeric values @var{a}
-and @var{b}.
-@end table
-
-These operations are not primitive in ordinary C++, since you can
-use a macro to return the minimum of two things in C++, as in the
-following example.
-
-@smallexample
-#define MIN(X,Y) ((X) < (Y) ? : (X) : (Y))
-@end smallexample
-
-@noindent
-You might then use @w{@samp{int min = MIN (i, j);}} to set @var{min} to
-the minimum value of variables @var{i} and @var{j}.
-
-However, side effects in @code{X} or @code{Y} may cause unintended
-behavior. For example, @code{MIN (i++, j++)} will fail, incrementing
-the smaller counter twice. The GNU C @code{typeof} extension allows you
-to write safe macros that avoid this kind of problem (@pxref{Typeof}).
-However, writing @code{MIN} and @code{MAX} as macros also forces you to
-use function-call notation for a fundamental arithmetic operation.
-Using GNU C++ extensions, you can write @w{@samp{int min = i <? j;}}
-instead.
-
-Since @code{<?} and @code{>?} are built into the compiler, they properly
-handle expressions with side-effects; @w{@samp{int min = i++ <? j++;}}
-works correctly.
-
@node Volatiles
@section When is a Volatile Object Accessed?
@cindex accessing volatiles
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
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
@end table
-See also @xref{Strong Using}.
+See also @xref{Namespace Association}.
-@node Strong Using
-@section Strong Using
+@node Namespace Association
+@section Namespace Association
@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++.
+extension will be removed in future versions of G++.
A using-directive with @code{__attribute ((strong))} is stronger
than a normal using-directive in two ways:
@itemize @bullet
@item
-Templates from the used namespace can be specialized as though they were members of the using namespace.
+Templates from the used namespace can be specialized and explicitly
+instantiated as though they were members of the using namespace.
@item
The using namespace is considered an associated namespace of all
name lookup.
@end itemize
+The used namespace must be nested within the using namespace so that
+normal unqualified lookup works properly.
+
This is useful for composing a namespace transparently from
implementation namespaces. For example:
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;
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 G++ minimum and maximum operators (@samp{<?} and @samp{>?}) and
+their compound forms (@samp{<?=}) and @samp{>?=}) have been deprecated
+and will be removed in a future version. Code using these operators
+should be modified to use @code{std::min} and @code{std::max} instead.
+
The named return value extension has been deprecated, and is now
removed from G++.
and other places where they are not permitted by the standard is
deprecated and will be removed from a future version of G++.
+G++ allows floating-point literals to appear in integral constant expressions,
+e.g. @samp{ enum E @{ e = int(2.2 * 3.7) @} }
+This extension is deprecated and will be removed from a future version.
+
+G++ allows static data members of const floating-point type to be declared
+with an initializer in a class definition. The standard only allows
+initializers for static members of const integral types and const
+enumeration types so this extension has been deprecated and will be removed
+from a future version.
+
@node Backwards Compatibility
@section Backwards Compatibility
@cindex Backwards Compatibility
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