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tree-ssa-structalias.c (get_constraint_for_component_ref): Never override with anything constraint.

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2006-01-10  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (get_constraint_for_component_ref):
	Never override with anything constraint.

From-SVN: r109544
This commit is contained in:
Richard Guenther 2006-01-10 14:55:59 +00:00 committed by Richard Biener
parent 56b04af731
commit a555a02ce6
2 changed files with 8 additions and 14 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2006-01-10 Richard Guenther <rguenther@suse.de>
* tree-ssa-structalias.c (get_constraint_for_component_ref):
Never override with anything constraint.
2006-01-10 Jan Beulich <jbeulich@novell.com>
* config/i386/i386.c (ix86_data_alignment): Don't force alignment to

17
gcc/tree-ssa-structalias.c
View File

@ -2373,25 +2373,14 @@ get_constraint_for_component_ref (tree t, VEC(ce_s, heap) **results)
t = get_ref_base_and_extent (t, &bitpos, &bitsize, &bitmaxsize);
get_constraint_for (t, results);
result = VEC_last (ce_s, *results);
result->offset = bitpos;
gcc_assert (beforelength + 1 == VEC_length (ce_s, *results));
/* This can also happen due to weird offsetof type macros. */
if (TREE_CODE (t) != ADDR_EXPR && result->type == ADDRESSOF)
result->type = SCALAR;
/* If we know where this goes, then yay. Otherwise, booo. */
if (bitmaxsize != -1
&& bitsize == bitmaxsize)
{
result->offset = bitpos;
}
else
{
result->var = anything_id;
result->offset = 0;
}
if (result->type == SCALAR)
{
/* In languages like C, you can access one past the end of an
@ -2409,7 +2398,7 @@ get_constraint_for_component_ref (tree t, VEC(ce_s, heap) **results)
for (curr = get_varinfo (result->var); curr; curr = curr->next)
{
if (offset_overlaps_with_access (curr->offset, curr->size,
result->offset, bitsize))
result->offset, bitmaxsize))
{
result->var = curr->id;
break;