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tree-ssa-dse.c (valid_ao_ref_for_dse): Reject ao_refs with negative offsets.

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* tree-ssa-dse.c (valid_ao_ref_for_dse): Reject ao_refs with
	negative offsets.

From-SVN: r253691
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Jeff Law 2017-10-12 12:09:11 -06:00 committed by Jeff Law
parent 62e1c6780d
commit 8b48488fbe
2 changed files with 6 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2017-10-12 Jeff Law <law@redhat.com>
* tree-ssa-dse.c (valid_ao_ref_for_dse): Reject ao_refs with
negative offsets.
2017-10-12 Martin Sebor <msebor@redhat.com>
PR other/82301

1
gcc/tree-ssa-dse.c
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@ -131,6 +131,7 @@ valid_ao_ref_for_dse (ao_ref *ref)
&& ref->max_size != -1
&& ref->size != 0
&& ref->max_size == ref->size
&& ref->offset >= 0
&& (ref->offset % BITS_PER_UNIT) == 0
&& (ref->size % BITS_PER_UNIT) == 0
&& (ref->size != -1));