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tree-ssa-structalias.c (find_what_p_points_to): Return false for ref-all pointers that point-to anything.

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* tree-ssa-structalias.c (find_what_p_points_to): Return false
	for ref-all pointers that point-to anything.

From-SVN: r125620
This commit is contained in:
Eric Botcazou 2007-06-11 15:40:52 +00:00 committed by Eric Botcazou
parent afcc986d03
commit 73fd4ad6cd
2 changed files with 16 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2007-06-11 Eric Botcazou <ebotcazou@adacore.com>
* tree-ssa-structalias.c (find_what_p_points_to): Return false
for ref-all pointers that point-to anything.
2007-06-11 Joseph Myers <joseph@codesourcery.com>
* config/arm/arm.c (arm_output_dwarf_dtprel,

15
gcc/tree-ssa-structalias.c
View File

@ -4540,12 +4540,19 @@ find_what_p_points_to (tree p)
finished_solution = BITMAP_GGC_ALLOC ();
stats.points_to_sets_created++;
/* Instead of using pt_anything, we instead merge in the SMT
aliases for the underlying SMT. In addition, if they
could have pointed to anything, they could point to
global memory. */
/* Instead of using pt_anything, we merge in the SMT aliases
for the underlying SMT. In addition, if they could have
pointed to anything, they could point to global memory.
But we cannot do that for ref-all pointers because these
aliases have not been computed yet. */
if (was_pt_anything)
{
if (PTR_IS_REF_ALL (p))
{
pi->pt_anything = 1;
return false;
}
merge_smts_into (p, finished_solution);
pi->pt_global_mem = 1;
}