diff options
Diffstat (limited to 'gcc/tree-ssa-alias.c')
| -rw-r--r-- | gcc/tree-ssa-alias.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index fe84baf..e64011d 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -2925,7 +2925,9 @@ call_may_clobber_ref_p_1 (gcall *call, ao_ref *ref, bool tbaa_p) modref_summary *summary = get_modref_function_summary (node); if (summary) { - if (!modref_may_conflict (call, summary->stores, ref, tbaa_p)) + if (!modref_may_conflict (call, summary->stores, ref, tbaa_p) + && (!summary->writes_errno + || !targetm.ref_may_alias_errno (ref))) { alias_stats.modref_clobber_no_alias++; if (dump_file && (dump_flags & TDF_DETAILS)) |