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re PR rtl-optimization/80491 (Compiler regression for long-add case.)

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PR rtl-optimization/80491
	* alias.c (memory_modified_in_insn_p): Return true for CALL_INSNs.

From-SVN: r247409
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Jakub Jelinek 2017-04-29 18:17:13 +02:00 • committed by Jakub Jelinek
parent 4212aecdf8
commit bc36c711da
2 changed files with 9 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-04-29 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/80491
* alias.c (memory_modified_in_insn_p): Return true for CALL_INSNs.
2017-04-29 Marc Glisse <marc.glisse@inria.fr>
PR tree-optimization/80487

4
gcc/alias.c
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@ -3221,6 +3221,10 @@ memory_modified_in_insn_p (const_rtx mem, const_rtx insn)
{
if (!INSN_P (insn))
return false;
/* Conservatively assume all non-readonly MEMs might be modified in
calls. */
if (CALL_P (insn))
return true;
memory_modified = false;
note_stores (PATTERN (insn), memory_modified_1, CONST_CAST_RTX(mem));
return memory_modified;