/* Language-independent node constructors for parse phase of GNU compiler.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of GCC.
#include "hashtab.h"
#include "output.h"
#include "target.h"
+#include "langhooks.h"
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
/* obstack.[ch] explicitly declined to prototype this. */
extern int _obstack_allocated_p PARAMS ((struct obstack *h, PTR obj));
-static void unsave_expr_now_r PARAMS ((tree));
-
/* Objects allocated on this obstack last forever. */
struct obstack permanent_obstack;
-/* Table indexed by tree code giving a string containing a character
- classifying the tree code. Possibilities are
- t, d, s, c, r, <, 1, 2 and e. See tree.def for details. */
-
-#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
-
-char tree_code_type[MAX_TREE_CODES] = {
-#include "tree.def"
-};
-#undef DEFTREECODE
-
-/* Table indexed by tree code giving number of expression
- operands beyond the fixed part of the node structure.
- Not used for types or decls. */
-
-#define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
-
-int tree_code_length[MAX_TREE_CODES] = {
-#include "tree.def"
-};
-#undef DEFTREECODE
-
-/* Names of tree components.
- Used for printing out the tree and error messages. */
-#define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
-
-const char *tree_code_name[MAX_TREE_CODES] = {
-#include "tree.def"
-};
-#undef DEFTREECODE
-
/* Statistics-gathering stuff. */
typedef enum
{
int tree_node_counts[(int) all_kinds];
int tree_node_sizes[(int) all_kinds];
-int id_string_size = 0;
static const char * const tree_node_kind_names[] = {
"decls",
htab_t type_hash_table;
-static void build_real_from_int_cst_1 PARAMS ((PTR));
static void set_type_quals PARAMS ((tree, int));
static void append_random_chars PARAMS ((char *));
static int type_hash_eq PARAMS ((const void*, const void*));
static unsigned int type_hash_hash PARAMS ((const void*));
static void print_type_hash_statistics PARAMS((void));
static void finish_vector_type PARAMS((tree));
+static tree make_vector PARAMS ((enum machine_mode, tree, int));
static int type_hash_marked_p PARAMS ((const void *));
static void type_hash_mark PARAMS ((const void *));
static int mark_tree_hashtable_entry PARAMS((void **, void *));
/* If non-null, these are language-specific helper functions for
- unsave_expr_now. If present, LANG_UNSAVE is called before its
- argument (an UNSAVE_EXPR) is to be unsaved, and all other
- processing in unsave_expr_now is aborted. LANG_UNSAVE_EXPR_NOW is
- called from unsave_expr_1 for language-specific tree codes. */
-void (*lang_unsave) PARAMS ((tree *));
-void (*lang_unsave_expr_now) PARAMS ((tree));
-
-/* If non-null, these are language-specific helper functions for
unsafe_for_reeval. Return negative to not handle some tree. */
int (*lang_unsafe_for_reeval) PARAMS ((tree));
make_node (code)
enum tree_code code;
{
- register tree t;
- register int type = TREE_CODE_CLASS (code);
- register size_t length;
+ tree t;
+ int type = TREE_CODE_CLASS (code);
+ size_t length;
#ifdef GATHER_STATISTICS
- register tree_node_kind kind;
+ tree_node_kind kind;
#endif
struct tree_common ttmp;
copy_node (node)
tree node;
{
- register tree t;
- register enum tree_code code = TREE_CODE (node);
- register size_t length;
+ tree t;
+ enum tree_code code = TREE_CODE (node);
+ size_t length;
length = tree_size (node);
t = ggc_alloc_tree (length);
tree list;
{
tree head;
- register tree prev, next;
+ tree prev, next;
if (list == 0)
return 0;
unsigned HOST_WIDE_INT low;
HOST_WIDE_INT hi;
{
- register tree t = make_node (INTEGER_CST);
+ tree t = make_node (INTEGER_CST);
TREE_INT_CST_LOW (t) = low;
TREE_INT_CST_HIGH (t) = hi;
return t;
}
+/* Return a new VECTOR_CST node whose type is TYPE and whose values
+ are in a list pointed by VALS. */
+
+tree
+build_vector (type, vals)
+ tree type, vals;
+{
+ tree v = make_node (VECTOR_CST);
+ int over1 = 0, over2 = 0;
+ tree link;
+
+ TREE_VECTOR_CST_ELTS (v) = vals;
+ TREE_TYPE (v) = type;
+
+ /* Iterate through elements and check for overflow. */
+ for (link = vals; link; link = TREE_CHAIN (link))
+ {
+ tree value = TREE_VALUE (link);
+
+ over1 |= TREE_OVERFLOW (value);
+ over2 |= TREE_CONSTANT_OVERFLOW (value);
+ }
+
+ TREE_OVERFLOW (v) = over1;
+ TREE_CONSTANT_OVERFLOW (v) = over2;
+
+ return v;
+}
+
/* Return a new REAL_CST node whose type is TYPE and value is D. */
tree
/* Return a new REAL_CST node whose type is TYPE
and whose value is the integer value of the INTEGER_CST node I. */
-#if !defined (REAL_IS_NOT_DOUBLE) || defined (REAL_ARITHMETIC)
-
REAL_VALUE_TYPE
real_value_from_int_cst (type, i)
tree type ATTRIBUTE_UNUSED, i;
{
REAL_VALUE_TYPE d;
-#ifdef REAL_ARITHMETIC
/* Clear all bits of the real value type so that we can later do
bitwise comparisons to see if two values are the same. */
memset ((char *) &d, 0, sizeof d);
else
REAL_VALUE_FROM_UNSIGNED_INT (d, TREE_INT_CST_LOW (i),
TREE_INT_CST_HIGH (i), TYPE_MODE (type));
-#else /* not REAL_ARITHMETIC */
- /* Some 386 compilers mishandle unsigned int to float conversions,
- so introduce a temporary variable E to avoid those bugs. */
- if (TREE_INT_CST_HIGH (i) < 0 && ! TREE_UNSIGNED (TREE_TYPE (i)))
- {
- REAL_VALUE_TYPE e;
-
- d = (double) (~TREE_INT_CST_HIGH (i));
- e = ((double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2))
- * (double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2)));
- d *= e;
- e = (double) (~TREE_INT_CST_LOW (i));
- d += e;
- d = (- d - 1.0);
- }
- else
- {
- REAL_VALUE_TYPE e;
-
- d = (double) (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (i);
- e = ((double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2))
- * (double) ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT / 2)));
- d *= e;
- e = (double) TREE_INT_CST_LOW (i);
- d += e;
- }
-#endif /* not REAL_ARITHMETIC */
return d;
}
-/* Args to pass to and from build_real_from_int_cst_1. */
-
-struct brfic_args
-{
- tree type; /* Input: type to conver to. */
- tree i; /* Input: operand to convert. */
- REAL_VALUE_TYPE d; /* Output: floating point value. */
-};
-
-/* Convert an integer to a floating point value while protected by a floating
- point exception handler. */
-
-static void
-build_real_from_int_cst_1 (data)
- PTR data;
-{
- struct brfic_args *args = (struct brfic_args *) data;
-
-#ifdef REAL_ARITHMETIC
- args->d = real_value_from_int_cst (args->type, args->i);
-#else
- args->d
- = REAL_VALUE_TRUNCATE (TYPE_MODE (args->type),
- real_value_from_int_cst (args->type, args->i));
-#endif
-}
-
/* Given a tree representing an integer constant I, return a tree
- representing the same value as a floating-point constant of type TYPE.
- We cannot perform this operation if there is no way of doing arithmetic
- on floating-point values. */
+ representing the same value as a floating-point constant of type TYPE. */
tree
build_real_from_int_cst (type, i)
tree v;
int overflow = TREE_OVERFLOW (i);
REAL_VALUE_TYPE d;
- struct brfic_args args;
v = make_node (REAL_CST);
TREE_TYPE (v) = type;
- /* Setup input for build_real_from_int_cst_1() */
- args.type = type;
- args.i = i;
-
- if (do_float_handler (build_real_from_int_cst_1, (PTR) &args))
- /* Receive output from build_real_from_int_cst_1() */
- d = args.d;
- else
- {
- /* We got an exception from build_real_from_int_cst_1() */
- d = dconst0;
- overflow = 1;
- }
+ d = real_value_from_int_cst (type, i);
/* Check for valid float value for this type on this target machine. */
-
#ifdef CHECK_FLOAT_VALUE
CHECK_FLOAT_VALUE (TYPE_MODE (type), d, overflow);
#endif
return v;
}
-#endif /* not REAL_IS_NOT_DOUBLE, or REAL_ARITHMETIC */
-
/* Return a newly constructed STRING_CST node whose value is
the LEN characters at STR.
The TREE_TYPE is not initialized. */
int len;
const char *str;
{
- register tree s = make_node (STRING_CST);
+ tree s = make_node (STRING_CST);
TREE_STRING_LENGTH (s) = len;
TREE_STRING_POINTER (s) = ggc_alloc_string (str, len);
tree type;
tree real, imag;
{
- register tree t = make_node (COMPLEX_CST);
+ tree t = make_node (COMPLEX_CST);
TREE_REALPART (t) = real;
TREE_IMAGPART (t) = imag;
make_tree_vec (len)
int len;
{
- register tree t;
- register int length = (len-1) * sizeof (tree) + sizeof (struct tree_vec);
+ tree t;
+ int length = (len-1) * sizeof (tree) + sizeof (struct tree_vec);
#ifdef GATHER_STATISTICS
tree_node_counts[(int)vec_kind]++;
integer_all_onesp (expr)
tree expr;
{
- register int prec;
- register int uns;
+ int prec;
+ int uns;
STRIP_NOPS (expr);
list_length (t)
tree t;
{
- register tree tail;
- register int len = 0;
+ tree tail;
+ int len = 0;
for (tail = t; tail; tail = TREE_CHAIN (tail))
len++;
if (op1)
{
- register tree t1;
+ tree t1;
#ifdef ENABLE_TREE_CHECKING
- register tree t2;
+ tree t2;
#endif
for (t1 = op1; TREE_CHAIN (t1); t1 = TREE_CHAIN (t1))
tree
tree_last (chain)
- register tree chain;
+ tree chain;
{
- register tree next;
+ tree next;
if (chain)
while ((next = TREE_CHAIN (chain)))
chain = next;
nreverse (t)
tree t;
{
- register tree prev = 0, decl, next;
+ tree prev = 0, decl, next;
for (decl = t; decl; decl = next)
{
next = TREE_CHAIN (decl);
build_tree_list (parm, value)
tree parm, value;
{
- register tree t = make_node (TREE_LIST);
+ tree t = make_node (TREE_LIST);
TREE_PURPOSE (t) = parm;
TREE_VALUE (t) = value;
return t;
tree_cons (purpose, value, chain)
tree purpose, value, chain;
{
- register tree node;
+ tree node;
node = ggc_alloc_tree (sizeof (struct tree_list));
return staticp (TREE_OPERAND (arg, 0));
default:
- return 0;
+ if ((unsigned int) TREE_CODE (arg)
+ >= (unsigned int) LAST_AND_UNUSED_TREE_CODE)
+ return (*lang_hooks.staticp) (arg);
+ else
+ return 0;
}
}
\f
save_expr (expr)
tree expr;
{
- register tree t = fold (expr);
+ tree t = fold (expr);
+ tree inner;
/* We don't care about whether this can be used as an lvalue in this
context. */
while (TREE_CODE (t) == NON_LVALUE_EXPR)
t = TREE_OPERAND (t, 0);
+ /* If we have simple operations applied to a SAVE_EXPR or to a SAVE_EXPR and
+ a constant, it will be more efficient to not make another SAVE_EXPR since
+ it will allow better simplification and GCSE will be able to merge the
+ computations if they actualy occur. */
+ for (inner = t;
+ (TREE_CODE_CLASS (TREE_CODE (inner)) == '1'
+ || (TREE_CODE_CLASS (TREE_CODE (inner)) == '2'
+ && TREE_CONSTANT (TREE_OPERAND (inner, 1))));
+ inner = TREE_OPERAND (inner, 0))
+ ;
+
/* If the tree evaluates to a constant, then we don't want to hide that
fact (i.e. this allows further folding, and direct checks for constants).
However, a read-only object that has side effects cannot be bypassed.
Since it is no problem to reevaluate literals, we just return the
literal node. */
-
- if (TREE_CONSTANT (t) || (TREE_READONLY (t) && ! TREE_SIDE_EFFECTS (t))
- || TREE_CODE (t) == SAVE_EXPR || TREE_CODE (t) == ERROR_MARK)
+ if (TREE_CONSTANT (inner)
+ || (TREE_READONLY (inner) && ! TREE_SIDE_EFFECTS (inner))
+ || TREE_CODE (inner) == SAVE_EXPR || TREE_CODE (inner) == ERROR_MARK)
return t;
/* If T contains a PLACEHOLDER_EXPR, we must evaluate it each time, since
break;
default:
- if (lang_unsave_expr_now != 0)
- (*lang_unsave_expr_now) (expr);
break;
}
}
-/* Helper function for unsave_expr_now. */
+/* Default lang hook for "unsave_expr_now". */
-static void
-unsave_expr_now_r (expr)
+tree
+lhd_unsave_expr_now (expr)
tree expr;
{
enum tree_code code;
/* There's nothing to do for NULL_TREE. */
if (expr == 0)
- return;
+ return expr;
unsave_expr_1 (expr);
case 'x': /* miscellaneous: e.g., identifier, TREE_LIST or ERROR_MARK. */
if (code == TREE_LIST)
{
- unsave_expr_now_r (TREE_VALUE (expr));
- unsave_expr_now_r (TREE_CHAIN (expr));
+ lhd_unsave_expr_now (TREE_VALUE (expr));
+ lhd_unsave_expr_now (TREE_CHAIN (expr));
}
break;
int i;
for (i = first_rtl_op (code) - 1; i >= 0; i--)
- unsave_expr_now_r (TREE_OPERAND (expr, i));
+ lhd_unsave_expr_now (TREE_OPERAND (expr, i));
}
break;
default:
abort ();
}
-}
-
-/* Modify a tree in place so that all the evaluate only once things
- are cleared out. Return the EXPR given. */
-
-tree
-unsave_expr_now (expr)
- tree expr;
-{
- if (lang_unsave!= 0)
- (*lang_unsave) (&expr);
- else
- unsave_expr_now_r (expr);
return expr;
}
contains_placeholder_p (exp)
tree exp;
{
- register enum tree_code code;
+ enum tree_code code;
int result;
if (!exp)
stabilize_reference (ref)
tree ref;
{
- register tree result;
- register enum tree_code code = TREE_CODE (ref);
+ tree result;
+ enum tree_code code = TREE_CODE (ref);
switch (code)
{
stabilize_reference_1 (e)
tree e;
{
- register tree result;
- register enum tree_code code = TREE_CODE (e);
+ tree result;
+ enum tree_code code = TREE_CODE (e);
/* We cannot ignore const expressions because it might be a reference
to a const array but whose index contains side-effects. But we can
tree
build VPARAMS ((enum tree_code code, tree tt, ...))
{
- register tree t;
- register int length;
- register int i;
+ tree t;
+ int length;
+ int i;
int fro;
int constant;
if (length == 2)
{
/* This is equivalent to the loop below, but faster. */
- register tree arg0 = va_arg (p, tree);
- register tree arg1 = va_arg (p, tree);
+ tree arg0 = va_arg (p, tree);
+ tree arg1 = va_arg (p, tree);
TREE_OPERAND (t, 0) = arg0;
TREE_OPERAND (t, 1) = arg1;
}
else if (length == 1)
{
- register tree arg0 = va_arg (p, tree);
+ tree arg0 = va_arg (p, tree);
/* The only one-operand cases we handle here are those with side-effects.
Others are handled with build1. So don't bother checked if the
{
for (i = 0; i < length; i++)
{
- register tree operand = va_arg (p, tree);
+ tree operand = va_arg (p, tree);
TREE_OPERAND (t, i) = operand;
if (operand && fro > i)
tree type;
tree node;
{
- register int length;
+ int length;
#ifdef GATHER_STATISTICS
- register tree_node_kind kind;
+ tree_node_kind kind;
#endif
- register tree t;
+ tree t;
#ifdef GATHER_STATISTICS
if (TREE_CODE_CLASS (code) == 'r')
TREE_READONLY (t) = 0;
break;
+ case INDIRECT_REF:
+ /* Whether a dereference is readonly has nothing to do with whether
+ its operand is readonly. */
+ TREE_READONLY (t) = 0;
+ break;
+
default:
if (TREE_CODE_CLASS (code) == '1' && node && TREE_CONSTANT (node))
TREE_CONSTANT (t) = 1;
tree
build_nt VPARAMS ((enum tree_code code, ...))
{
- register tree t;
- register int length;
- register int i;
+ tree t;
+ int length;
+ int i;
VA_OPEN (p, code);
VA_FIXEDARG (p, enum tree_code, code);
enum tree_code code;
tree name, type;
{
- register tree t;
+ tree t;
t = make_node (code);
build_block (vars, tags, subblocks, supercontext, chain)
tree vars, tags ATTRIBUTE_UNUSED, subblocks, supercontext, chain;
{
- register tree block = make_node (BLOCK);
+ tree block = make_node (BLOCK);
BLOCK_VARS (block) = vars;
BLOCK_SUBBLOCKS (block) = subblocks;
{
static const char *last_file = 0;
static tree last_filenode = NULL_TREE;
- register tree wfl = make_node (EXPR_WITH_FILE_LOCATION);
+ tree wfl = make_node (EXPR_WITH_FILE_LOCATION);
EXPR_WFL_NODE (wfl) = node;
EXPR_WFL_SET_LINECOL (wfl, line, col);
return wfl;
}
\f
-/* Return a declaration like DDECL except that its DECL_MACHINE_ATTRIBUTE
+/* Return a declaration like DDECL except that its DECL_ATTRIBUTES
is ATTRIBUTE. */
tree
build_decl_attribute_variant (ddecl, attribute)
tree ddecl, attribute;
{
- DECL_MACHINE_ATTRIBUTES (ddecl) = attribute;
+ DECL_ATTRIBUTES (ddecl) = attribute;
return ddecl;
}
return ttype;
}
-/* Default value of targetm.valid_decl_attribute_p and
- targetm.valid_type_attribute_p that always returns false. */
-
-int
-default_valid_attribute_p (attr_name, attr_args, decl, type)
- tree attr_name ATTRIBUTE_UNUSED;
- tree attr_args ATTRIBUTE_UNUSED;
- tree decl ATTRIBUTE_UNUSED;
- tree type ATTRIBUTE_UNUSED;
-{
- return 0;
-}
-
/* Default value of targetm.comp_type_attributes that always returns 1. */
int
{
}
-/* Return 1 if ATTR_NAME and ATTR_ARGS is valid for either declaration
- DECL or type TYPE and 0 otherwise. Validity is determined the
- target functions valid_decl_attribute and valid_machine_attribute. */
-
-int
-valid_machine_attribute (attr_name, attr_args, decl, type)
- tree attr_name;
- tree attr_args;
- tree decl;
- tree type;
+/* Default value of targetm.attribute_table that is empty. */
+const struct attribute_spec default_target_attribute_table[] =
{
- tree type_attrs;
-
- if (TREE_CODE (attr_name) != IDENTIFIER_NODE)
- abort ();
-
- if (decl)
- {
- tree decl_attrs = DECL_MACHINE_ATTRIBUTES (decl);
-
- if ((*targetm.valid_decl_attribute) (decl, decl_attrs, attr_name,
- attr_args))
- {
- tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
- decl_attrs);
-
- if (attr != NULL_TREE)
- {
- /* Override existing arguments. Declarations are unique
- so we can modify this in place. */
- TREE_VALUE (attr) = attr_args;
- }
- else
- {
- decl_attrs = tree_cons (attr_name, attr_args, decl_attrs);
- decl = build_decl_attribute_variant (decl, decl_attrs);
- }
-
- /* Don't apply the attribute to both the decl and the type. */
- return 1;
- }
- }
-
- type_attrs = TYPE_ATTRIBUTES (type);
- if ((*targetm.valid_type_attribute) (type, type_attrs, attr_name,
- attr_args))
- {
- tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
- type_attrs);
-
- if (attr != NULL_TREE)
- {
- /* Override existing arguments. ??? This currently
- works since attribute arguments are not included in
- `attribute_hash_list'. Something more complicated
- may be needed in the future. */
- TREE_VALUE (attr) = attr_args;
- }
- else
- {
- /* If this is part of a declaration, create a type variant,
- otherwise, this is part of a type definition, so add it
- to the base type. */
- type_attrs = tree_cons (attr_name, attr_args, type_attrs);
- if (decl != 0)
- type = build_type_attribute_variant (type, type_attrs);
- else
- TYPE_ATTRIBUTES (type) = type_attrs;
- }
-
- if (decl)
- TREE_TYPE (decl) = type;
-
- return 1;
- }
- /* Handle putting a type attribute on pointer-to-function-type
- by putting the attribute on the function type. */
- else if (POINTER_TYPE_P (type)
- && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE
- && (*targetm.valid_type_attribute) (TREE_TYPE (type), type_attrs,
- attr_name, attr_args))
- {
- tree inner_type = TREE_TYPE (type);
- tree inner_attrs = TYPE_ATTRIBUTES (inner_type);
- tree attr = lookup_attribute (IDENTIFIER_POINTER (attr_name),
- type_attrs);
-
- if (attr != NULL_TREE)
- TREE_VALUE (attr) = attr_args;
- else
- {
- inner_attrs = tree_cons (attr_name, attr_args, inner_attrs);
- inner_type = build_type_attribute_variant (inner_type,
- inner_attrs);
- }
-
- if (decl)
- TREE_TYPE (decl) = build_pointer_type (inner_type);
- else
- {
- /* Clear TYPE_POINTER_TO for the old inner type, since
- `type' won't be pointing to it anymore. */
- TYPE_POINTER_TO (TREE_TYPE (type)) = NULL_TREE;
- TREE_TYPE (type) = inner_type;
- }
+ { NULL, 0, 0, false, false, false, NULL }
+};
- return 1;
- }
+/* Default value of targetm.function_attribute_inlinable_p that always
+ returns false. */
+bool
+default_function_attribute_inlinable_p (fndecl)
+ tree fndecl ATTRIBUTE_UNUSED;
+{
+ /* By default, functions with machine attributes cannot be inlined. */
+ return false;
+}
- return 0;
+/* Default value of targetm.ms_bitfield_layout_p that always returns
+ false. */
+bool
+default_ms_bitfield_layout_p (record)
+ tree record ATTRIBUTE_UNUSED;
+{
+ /* By default, GCC does not use the MS VC++ bitfield layout rules. */
+ return false;
}
/* Return non-zero if IDENT is a valid name for attribute ATTR,
/* Given an attribute name and a list of attributes, return a pointer to the
attribute's list element if the attribute is part of the list, or NULL_TREE
- if not found. */
+ if not found. If the attribute appears more than once, this only
+ returns the first occurrence; the TREE_CHAIN of the return value should
+ be passed back in if further occurrences are wanted. */
tree
lookup_attribute (attr_name, list)
tree
merge_attributes (a1, a2)
- register tree a1, a2;
+ tree a1, a2;
{
tree attributes;
else
{
/* Pick the longest list, and hang on the other list. */
- /* ??? For the moment we punt on the issue of attrs with args. */
if (list_length (a1) < list_length (a2))
attributes = a2, a2 = a1;
for (; a2 != 0; a2 = TREE_CHAIN (a2))
- if (lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (a2)),
- attributes) == NULL_TREE)
- {
- a1 = copy_node (a2);
- TREE_CHAIN (a1) = attributes;
- attributes = a1;
- }
+ {
+ tree a;
+ for (a = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (a2)),
+ attributes);
+ a != NULL_TREE;
+ a = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (a2)),
+ TREE_CHAIN (a)))
+ {
+ if (simple_cst_equal (TREE_VALUE (a), TREE_VALUE (a2)) == 1)
+ break;
+ }
+ if (a == NULL_TREE)
+ {
+ a1 = copy_node (a2);
+ TREE_CHAIN (a1) = attributes;
+ attributes = a1;
+ }
+ }
}
}
return attributes;
merge_decl_attributes (olddecl, newdecl)
tree olddecl, newdecl;
{
- return merge_attributes (DECL_MACHINE_ATTRIBUTES (olddecl),
- DECL_MACHINE_ATTRIBUTES (newdecl));
+ return merge_attributes (DECL_ATTRIBUTES (olddecl),
+ DECL_ATTRIBUTES (newdecl));
}
#ifdef TARGET_DLLIMPORT_DECL_ATTRIBUTES
tree a;
int delete_dllimport_p;
- old = DECL_MACHINE_ATTRIBUTES (old);
- new = DECL_MACHINE_ATTRIBUTES (new);
+ old = DECL_ATTRIBUTES (old);
+ new = DECL_ATTRIBUTES (new);
/* What we need to do here is remove from `old' dllimport if it doesn't
appear in `new'. dllimport behaves like extern: if a declaration is
if (delete_dllimport_p)
{
- tree prev,t;
+ tree prev, t;
/* Scan the list for dllimport and delete it. */
for (prev = NULL_TREE, t = a; t; prev = t, t = TREE_CHAIN (t))
build_type_copy (type)
tree type;
{
- register tree t, m = TYPE_MAIN_VARIANT (type);
+ tree t, m = TYPE_MAIN_VARIANT (type);
t = copy_node (type);
tree list;
{
unsigned int hashcode;
- register tree tail;
+ tree tail;
for (hashcode = 0, tail = list; tail; tail = TREE_CHAIN (tail))
hashcode += TYPE_HASH (TREE_VALUE (tail));
}
}
-/* See if the data pointed to by the type hash table is marked. */
+/* See if the data pointed to by the type hash table is marked. We consider
+ it marked if the type is marked or if a debug type number or symbol
+ table entry has been made for the type. This reduces the amount of
+ debugging output and eliminates that dependency of the debug output on
+ the number of garbage collections. */
static int
type_hash_marked_p (p)
const void *p;
{
- return ggc_marked_p (((struct type_hash *) p)->type);
+ tree type = ((struct type_hash *) p)->type;
+
+ return ggc_marked_p (type) || TYPE_SYMTAB_POINTER (type);
}
-/* Mark the entry in the type hash table the type it points to is marked. */
+/* Mark the entry in the type hash table the type it points to is marked.
+ Also mark the type in case we are considering this entry "marked" by
+ virtue of TYPE_SYMTAB_POINTER being set. */
static void
type_hash_mark (p)
const void *p;
{
ggc_mark (p);
+ ggc_mark_tree (((struct type_hash *) p)->type);
}
/* Mark the hashtable slot pointed to by ENTRY (which is really a
tree list;
{
unsigned int hashcode;
- register tree tail;
+ tree tail;
for (hashcode = 0, tail = list; tail; tail = TREE_CHAIN (tail))
/* ??? Do we want to add in TREE_VALUE too? */
attribute_list_contained (l1, l2)
tree l1, l2;
{
- register tree t1, t2;
+ tree t1, t2;
/* First check the obvious, maybe the lists are identical. */
if (l1 == l2)
/* Maybe the lists are equal. */
if (t1 == 0 && t2 == 0)
- return 1;
+ return 1;
for (; t2 != 0; t2 = TREE_CHAIN (t2))
{
- tree attr
- = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (t2)), l1);
+ tree attr;
+ for (attr = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (t2)), l1);
+ attr != NULL_TREE;
+ attr = lookup_attribute (IDENTIFIER_POINTER (TREE_PURPOSE (t2)),
+ TREE_CHAIN (attr)))
+ {
+ if (simple_cst_equal (TREE_VALUE (t2), TREE_VALUE (attr)) == 1)
+ break;
+ }
if (attr == 0)
return 0;
type_list_equal (l1, l2)
tree l1, l2;
{
- register tree t1, t2;
+ tree t1, t2;
for (t1 = l1, t2 = l2; t1 && t2; t1 = TREE_CHAIN (t1), t2 = TREE_CHAIN (t2))
if (TREE_VALUE (t1) != TREE_VALUE (t2)
return 0;
}
-/* Return 1 if T is an INTEGER_CST that can be represented in a single
- HOST_WIDE_INT value. If POS is nonzero, the result must be positive. */
+/* Return 1 if T is an INTEGER_CST that can be manipulated efficiently on
+ the host. If POS is zero, the value can be represented in a single
+ HOST_WIDE_INT. If POS is nonzero, the value must be positive and can
+ be represented in a single unsigned HOST_WIDE_INT. */
int
host_integerp (t, pos)
&& ((TREE_INT_CST_HIGH (t) == 0
&& (HOST_WIDE_INT) TREE_INT_CST_LOW (t) >= 0)
|| (! pos && TREE_INT_CST_HIGH (t) == -1
- && (HOST_WIDE_INT) TREE_INT_CST_LOW (t) < 0)
- || (! pos && TREE_INT_CST_HIGH (t) == 0
- && TREE_UNSIGNED (TREE_TYPE (t)))));
+ && (HOST_WIDE_INT) TREE_INT_CST_LOW (t) < 0
+ && ! TREE_UNSIGNED (TREE_TYPE (t)))
+ || (pos && TREE_INT_CST_HIGH (t) == 0)));
}
/* Return the HOST_WIDE_INT least significant bits of T if it is an
tree_int_cst_msb (t)
tree t;
{
- register int prec;
+ int prec;
HOST_WIDE_INT h;
unsigned HOST_WIDE_INT l;
simple_cst_equal (t1, t2)
tree t1, t2;
{
- register enum tree_code code1, code2;
+ enum tree_code code1, code2;
int cmp;
int i;
int
compare_tree_int (t, u)
tree t;
- unsigned int u;
+ unsigned HOST_WIDE_INT u;
{
if (tree_int_cst_sgn (t) < 0)
return -1;
build_pointer_type (to_type)
tree to_type;
{
- register tree t = TYPE_POINTER_TO (to_type);
+ tree t = TYPE_POINTER_TO (to_type);
/* First, if we already have a type for pointers to TO_TYPE, use it. */
build_reference_type (to_type)
tree to_type;
{
- register tree t = TYPE_REFERENCE_TO (to_type);
+ tree t = TYPE_REFERENCE_TO (to_type);
/* First, if we already have a type for pointers to TO_TYPE, use it. */
tree
build_type_no_quals (t)
- tree t;
+ tree t;
{
switch (TREE_CODE (t))
{
build_index_type (maxval)
tree maxval;
{
- register tree itype = make_node (INTEGER_TYPE);
+ tree itype = make_node (INTEGER_TYPE);
TREE_TYPE (itype) = sizetype;
TYPE_PRECISION (itype) = TYPE_PRECISION (sizetype);
build_range_type (type, lowval, highval)
tree type, lowval, highval;
{
- register tree itype = make_node (INTEGER_TYPE);
+ tree itype = make_node (INTEGER_TYPE);
TREE_TYPE (itype) = type;
if (type == NULL_TREE)
of just highval (maxval). */
tree
-build_index_2_type (lowval,highval)
+build_index_2_type (lowval, highval)
tree lowval, highval;
{
return build_range_type (sizetype, lowval, highval);
build_array_type (elt_type, index_type)
tree elt_type, index_type;
{
- register tree t;
+ tree t;
unsigned int hashcode;
if (TREE_CODE (elt_type) == FUNCTION_TYPE)
tree
get_inner_array_type (array)
- tree array;
+ tree array;
{
tree type = TREE_TYPE (array);
build_function_type (value_type, arg_types)
tree value_type, arg_types;
{
- register tree t;
+ tree t;
unsigned int hashcode;
if (TREE_CODE (value_type) == FUNCTION_TYPE)
build_method_type (basetype, type)
tree basetype, type;
{
- register tree t;
+ tree t;
unsigned int hashcode;
/* Make a node of the sort we want. */
build_offset_type (basetype, type)
tree basetype, type;
{
- register tree t;
+ tree t;
unsigned int hashcode;
/* Make a node of the sort we want. */
build_complex_type (component_type)
tree component_type;
{
- register tree t;
+ tree t;
unsigned int hashcode;
/* Make a node of the sort we want. */
/* If we are writing Dwarf2 output we need to create a name,
since complex is a fundamental type. */
- if (write_symbols == DWARF2_DEBUG && ! TYPE_NAME (t))
+ if ((write_symbols == DWARF2_DEBUG || write_symbols == VMS_AND_DWARF2_DEBUG)
+ && ! TYPE_NAME (t))
{
const char *name;
if (component_type == char_type_node)
tree
get_unwidened (op, for_type)
- register tree op;
+ tree op;
tree for_type;
{
/* Set UNS initially if converting OP to FOR_TYPE is a zero-extension. */
- register tree type = TREE_TYPE (op);
- register unsigned final_prec
+ tree type = TREE_TYPE (op);
+ unsigned final_prec
= TYPE_PRECISION (for_type != 0 ? for_type : type);
- register int uns
+ int uns
= (for_type != 0 && for_type != type
&& final_prec > TYPE_PRECISION (type)
&& TREE_UNSIGNED (type));
- register tree win = op;
+ tree win = op;
while (TREE_CODE (op) == NOP_EXPR)
{
- register int bitschange
+ int bitschange
= TYPE_PRECISION (TREE_TYPE (op))
- TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op, 0)));
tree
get_narrower (op, unsignedp_ptr)
- register tree op;
+ tree op;
int *unsignedp_ptr;
{
- register int uns = 0;
+ int uns = 0;
int first = 1;
- register tree win = op;
+ tree win = op;
while (TREE_CODE (op) == NOP_EXPR)
{
- register int bitschange
+ int bitschange
= (TYPE_PRECISION (TREE_TYPE (op))
- TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (op, 0))));
tree c, type;
{
/* If the bounds of the type are integers, we can check ourselves.
- Otherwise,. use force_fit_type, which checks against the precision. */
+ If not, but this type is a subtype, try checking against that.
+ Otherwise, use force_fit_type, which checks against the precision. */
if (TYPE_MAX_VALUE (type) != NULL_TREE
&& TYPE_MIN_VALUE (type) != NULL_TREE
&& TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST
&& ! (TREE_INT_CST_HIGH (c) < 0
&& TREE_UNSIGNED (TREE_TYPE (c))));
}
+ else if (TREE_CODE (type) == INTEGER_TYPE && TREE_TYPE (type) != 0)
+ return int_fits_type_p (c, TREE_TYPE (type));
else
{
c = copy_node (c);
total_nodes += tree_node_counts[i];
total_bytes += tree_node_sizes[i];
}
- fprintf (stderr, "%-20s %9d\n", "identifier names", id_string_size);
fprintf (stderr, "-------------------------------------\n");
fprintf (stderr, "%-20s %6d %9d\n", "Total", total_nodes, total_bytes);
fprintf (stderr, "-------------------------------------\n");
#endif
print_obstack_statistics ("permanent_obstack", &permanent_obstack);
print_type_hash_statistics ();
- print_lang_statistics ();
+ (*lang_hooks.print_statistics) ();
}
\f
#define FILE_FUNCTION_PREFIX_LEN 9
{
struct stat st;
- /* VALUE should be unique for each file and must
- not change between compiles since this can cause
- bootstrap comparison errors. */
+ /* VALUE should be unique for each file and must not change between
+ compiles since this can cause bootstrap comparison errors. */
if (stat (main_input_filename, &st) < 0)
- abort ();
-
- value = st.st_dev ^ st.st_ino ^ st.st_mtime;
+ {
+ /* This can happen when preprocessed text is shipped between
+ machines, e.g. with bug reports. Assume that uniqueness
+ isn't actually an issue. */
+ value = 1;
+ }
+ else
+ {
+ /* In VMS, ino is an array, so we have to use both values. We
+ conditionalize that. */
+#ifdef VMS
+#define INO_TO_INT(INO) ((int) (INO)[1] << 16 ^ (int) (INO)[2])
+#else
+#define INO_TO_INT(INO) INO
+#endif
+ value = st.st_dev ^ INO_TO_INT (st.st_ino) ^ st.st_mtime;
+ }
}
template += strlen (template);
char *p;
{
for (; *p; p++)
- if (! (ISDIGIT(*p)
+ if (! (ISALNUM (*p)
#ifndef NO_DOLLAR_IN_LABEL /* this for `$'; unlikely, but... -- kr */
|| *p == '$'
#endif
#ifndef NO_DOT_IN_LABEL /* this for `.'; unlikely, but... */
|| *p == '.'
#endif
- || ISUPPER (*p)
- || ISLOWER (*p)))
+ ))
*p = '_';
}
int line;
const char *function;
{
- internal_error ("Tree check: expected %s, have %s in %s, at %s:%d",
+ internal_error ("tree check: expected %s, have %s in %s, at %s:%d",
tree_code_name[code], tree_code_name[TREE_CODE (node)],
function, trim_filename (file), line);
}
const char *function;
{
internal_error
- ("Tree check: expected class '%c', have '%c' (%s) in %s, at %s:%d",
+ ("tree check: expected class '%c', have '%c' (%s) in %s, at %s:%d",
cl, TREE_CODE_CLASS (TREE_CODE (node)),
tree_code_name[TREE_CODE (node)], function, trim_filename (file), line);
}
va_list_type_node = t;
}
- V4SF_type_node = make_node (VECTOR_TYPE);
- TREE_TYPE (V4SF_type_node) = float_type_node;
- TYPE_MODE (V4SF_type_node) = V4SFmode;
- finish_vector_type (V4SF_type_node);
-
- V4SI_type_node = make_node (VECTOR_TYPE);
- TREE_TYPE (V4SI_type_node) = intSI_type_node;
- TYPE_MODE (V4SI_type_node) = V4SImode;
- finish_vector_type (V4SI_type_node);
-
- V2SI_type_node = make_node (VECTOR_TYPE);
- TREE_TYPE (V2SI_type_node) = intSI_type_node;
- TYPE_MODE (V2SI_type_node) = V2SImode;
- finish_vector_type (V2SI_type_node);
-
- V4HI_type_node = make_node (VECTOR_TYPE);
- TREE_TYPE (V4HI_type_node) = intHI_type_node;
- TYPE_MODE (V4HI_type_node) = V4HImode;
- finish_vector_type (V4HI_type_node);
-
- V8QI_type_node = make_node (VECTOR_TYPE);
- TREE_TYPE (V8QI_type_node) = intQI_type_node;
- TYPE_MODE (V8QI_type_node) = V8QImode;
- finish_vector_type (V8QI_type_node);
+ unsigned_V4SI_type_node
+ = make_vector (V4SImode, unsigned_intSI_type_node, 1);
+ unsigned_V2SI_type_node
+ = make_vector (V2SImode, unsigned_intSI_type_node, 1);
+ unsigned_V4HI_type_node
+ = make_vector (V4HImode, unsigned_intHI_type_node, 1);
+ unsigned_V8QI_type_node
+ = make_vector (V8QImode, unsigned_intQI_type_node, 1);
+ unsigned_V8HI_type_node
+ = make_vector (V8HImode, unsigned_intHI_type_node, 1);
+ unsigned_V16QI_type_node
+ = make_vector (V16QImode, unsigned_intQI_type_node, 1);
+
+ V16SF_type_node = make_vector (V16SFmode, float_type_node, 0);
+ V4SF_type_node = make_vector (V4SFmode, float_type_node, 0);
+ V4SI_type_node = make_vector (V4SImode, intSI_type_node, 0);
+ V2SI_type_node = make_vector (V2SImode, intSI_type_node, 0);
+ V4HI_type_node = make_vector (V4HImode, intHI_type_node, 0);
+ V8QI_type_node = make_vector (V8QImode, intQI_type_node, 0);
+ V8HI_type_node = make_vector (V8HImode, intHI_type_node, 0);
+ V2SF_type_node = make_vector (V2SFmode, float_type_node, 0);
+ V16QI_type_node = make_vector (V16QImode, intQI_type_node, 0);
+}
+
+/* Returns a vector tree node given a vector mode, the inner type, and
+ the signness. */
+
+static tree
+make_vector (mode, innertype, unsignedp)
+ enum machine_mode mode;
+ tree innertype;
+ int unsignedp;
+{
+ tree t;
+
+ t = make_node (VECTOR_TYPE);
+ TREE_TYPE (t) = innertype;
+ TYPE_MODE (t) = mode;
+ TREE_UNSIGNED (TREE_TYPE (t)) = unsignedp;
+ finish_vector_type (t);
+
+ return t;
+}
+
+/* Given an initializer INIT, return TRUE if INIT is zero or some
+ aggregate of zeros. Otherwise return FALSE. */
+
+bool
+initializer_zerop (init)
+ tree init;
+{
+ STRIP_NOPS (init);
+
+ switch (TREE_CODE (init))
+ {
+ case INTEGER_CST:
+ return integer_zerop (init);
+ case REAL_CST:
+ return real_zerop (init)
+ && ! REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (init));
+ case COMPLEX_CST:
+ return integer_zerop (init)
+ || (real_zerop (init)
+ && ! REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (TREE_REALPART (init)))
+ && ! REAL_VALUE_MINUS_ZERO (TREE_REAL_CST (TREE_IMAGPART (init))));
+ case CONSTRUCTOR:
+ {
+ if (AGGREGATE_TYPE_P (TREE_TYPE (init)))
+ {
+ tree aggr_init = TREE_OPERAND (init, 1);
+
+ while (aggr_init)
+ {
+ if (! initializer_zerop (TREE_VALUE (aggr_init)))
+ return false;
+ aggr_init = TREE_CHAIN (aggr_init);
+ }
+ return true;
+ }
+ return false;
+ }
+ default:
+ return false;
+ }
}
OSDN Git Service
