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re PR pch/13689 (GGC PCH breaks aliasing)

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PR pch/13689
	* alias.c (struct alias_set_entry): Mark for GC.
	(alias_sets): Make static, mark for GC.
	(record_alias_subset): Use GC to allocate alias structures.
	* varray.c (element): Make generic varrays GCed.

From-SVN: r75962
This commit is contained in:
Geoffrey Keating 2004-01-16 07:28:11 +00:00 committed by Geoffrey Keating
parent a6dd409400
commit b604074cad
3 changed files with 16 additions and 9 deletions
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6
gcc/ChangeLog
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@ -1,5 +1,11 @@
2004-01-15 Geoffrey Keating <geoffk@apple.com>
PR pch/13689
* alias.c (struct alias_set_entry): Mark for GC.
(alias_sets): Make static, mark for GC.
(record_alias_subset): Use GC to allocate alias structures.
* varray.c (element): Make generic varrays GCed.
PR pch/13361
* c-typeck.c (constructor_asmspec): Delete.
(struct initializer_stack): Delete field 'asmspec'.

13
gcc/alias.c
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@ -74,7 +74,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
However, this is no actual entry for alias set zero. It is an
error to attempt to explicitly construct a subset of zero. */
typedef struct alias_set_entry
struct alias_set_entry GTY(())
{
/* The alias set number, as stored in MEM_ALIAS_SET. */
HOST_WIDE_INT alias_set;
@ -86,12 +86,13 @@ typedef struct alias_set_entry
continuing our example above, the children here will be all of
`int', `double', `float', and `struct S'. */
splay_tree children;
splay_tree GTY((param1_is (int), param2_is (int))) children;
/* Nonzero if would have a child of zero: this effectively makes this
alias set the same as alias set zero. */
int has_zero_child;
} *alias_set_entry;
};
typedef struct alias_set_entry *alias_set_entry;
static int rtx_equal_for_memref_p (rtx, rtx);
static rtx find_symbolic_term (rtx);
@ -206,7 +207,7 @@ char *reg_known_equiv_p;
static bool copying_arguments;
/* The splay-tree used to store the various alias set entries. */
varray_type alias_sets;
static GTY ((param_is (struct alias_set_entry))) varray_type alias_sets;
/* Returns a pointer to the alias set entry for ALIAS_SET, if there is
such an entry, or NULL otherwise. */
@ -640,10 +641,10 @@ record_alias_subset (HOST_WIDE_INT superset, HOST_WIDE_INT subset)
{
/* Create an entry for the SUPERSET, so that we have a place to
attach the SUBSET. */
superset_entry = xmalloc (sizeof (struct alias_set_entry));
superset_entry = ggc_alloc (sizeof (struct alias_set_entry));
superset_entry->alias_set = superset;
superset_entry->children
= splay_tree_new (splay_tree_compare_ints, 0, 0);
= splay_tree_new_ggc (splay_tree_compare_ints);
superset_entry->has_zero_child = 0;
VARRAY_GENERIC_PTR (alias_sets, superset) = superset_entry;
}

6
gcc/varray.c
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@ -30,8 +30,8 @@
#define VARRAY_HDR_SIZE (sizeof (struct varray_head_tag) - sizeof (varray_data))
/* Do not add any more non-GC items here. Please either remove or GC those items that
are not GCed. */
/* Do not add any more non-GC items here. Please either remove or GC
those items that are not GCed. */
static const struct {
unsigned char size;
@ -47,7 +47,7 @@ static const struct {
{ sizeof (unsigned long), 1 },
{ sizeof (HOST_WIDE_INT), 1 },
{ sizeof (unsigned HOST_WIDE_INT), 1 },
{ sizeof (void *), 0 },
{ sizeof (void *), 1 },
{ sizeof (char *), 1 },
{ sizeof (struct rtx_def *), 1 },
{ sizeof (struct rtvec_def *), 1 },