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Fix wrong code in ldost-strlen-1.c

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gcc/ChangeLog:

	PR tree-optimization/102720
	* tree-ssa-structalias.c (compute_points_to_sets): Fix producing
	of call used and clobbered sets.
This commit is contained in:
Jan Hubicka 2021-10-16 14:45:06 +02:00
parent 93d183a5ff
commit 99b287b8ef
1 changed files with 12 additions and 10 deletions
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22
gcc/tree-ssa-structalias.c
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@ -7541,17 +7541,18 @@ compute_points_to_sets (void)
determine_global_memory_access (stmt, NULL,
&reads_global_memory,
&uses_global_memory);
if (!uses_global_memory)
;
else if ((vi = lookup_call_use_vi (stmt)) != NULL)
if ((vi = lookup_call_use_vi (stmt)) != NULL)
{
*pt = find_what_var_points_to (cfun->decl, vi);
/* Escaped (and thus nonlocal) variables are always
implicitly used by calls. */
/* ??? ESCAPED can be empty even though NONLOCAL
always escaped. */
pt->nonlocal = uses_global_memory;
pt->escaped = uses_global_memory;
if (uses_global_memory)
{
pt->nonlocal = uses_global_memory;
pt->escaped = uses_global_memory;
}
}
else if (uses_global_memory)
{
@ -7572,17 +7573,18 @@ compute_points_to_sets (void)
determine_global_memory_access (stmt, &writes_global_memory,
NULL, NULL);
if (!writes_global_memory)
;
else if ((vi = lookup_call_clobber_vi (stmt)) != NULL)
if ((vi = lookup_call_clobber_vi (stmt)) != NULL)
{
*pt = find_what_var_points_to (cfun->decl, vi);
/* Escaped (and thus nonlocal) variables are always
implicitly clobbered by calls. */
/* ??? ESCAPED can be empty even though NONLOCAL
always escaped. */
pt->nonlocal = writes_global_memory;
pt->escaped = writes_global_memory;
if (writes_global_memory)
{
pt->nonlocal = writes_global_memory;
pt->escaped = writes_global_memory;
}
}
else if (writes_global_memory)
{