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re PR tree-optimization/20926 (ICE: tree check, in recent builds)

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2005-04-11  Daniel Berlin  <dberlin@dberlin.org>

	Fix PR tree-optimization/20926

	* tree-ssa-alias.c (add_type_alias): Handle subvars.

From-SVN: r97982
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Daniel Berlin 2005-04-11 20:15:33 +00:00 • committed by Daniel Berlin
parent 19f1ebc794
commit 9458912079
2 changed files with 19 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2005-04-11 Daniel Berlin <dberlin@dberlin.org>
Fix PR tree-optimization/20926
* tree-ssa-alias.c (add_type_alias): Handle subvars.
2005-04-11 Devang Patel <dpatel@apple.com>
* config/rs6000.c (rs6000_emit_vector_select): Fix vector select

14
gcc/tree-ssa-alias.c
View file

@ -2704,6 +2704,7 @@ add_type_alias (tree ptr, tree var)
varray_type aliases;
tree tag;
var_ann_t ann = var_ann (ptr);
subvar_t svars;
if (ann->type_mem_tag == NULL_TREE)
{
@ -2748,7 +2749,18 @@ found_tag:
for PTR's type tag. */
gcc_assert (var_ann (var)->type_mem_tag == NOT_A_TAG);
tag = ann->type_mem_tag;
add_may_alias (tag, var);
/* If VAR has subvars, add the subvars to the tag instead of the
actual var. */
if (var_can_have_subvars (var)
&& (svars = get_subvars_for_var (var)))
{
subvar_t sv;
for (sv = svars; sv; sv = sv->next)
add_may_alias (tag, sv->var);
}
else
add_may_alias (tag, var);
/* TAG and its set of aliases need to be marked for renaming. */
mark_sym_for_renaming (tag);