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Revert maybe_ne -> known_ne change in vn_reference_lookup_3

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This reverts the change as discussed.

2022-07-01  Richard Biener  <rguenther@suse.de>

	* tree-ssa-sccvn.cc (vn_reference_lookup_3): Revert
	back to using maybe_ne (off, -1).
This commit is contained in:
Richard Biener 2022-07-01 13:16:33 +02:00
parent 08ed796ed0
commit 2b0937946b
1 changed files with 2 additions and 2 deletions
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gcc/tree-ssa-sccvn.cc
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@ -3243,12 +3243,12 @@ vn_reference_lookup_3 (ao_ref *ref, tree vuse, void *data_,
poly_int64 extra_off = 0;
if (j == 0 && i >= 0
&& lhs_ops[0].opcode == MEM_REF
&& known_ne (lhs_ops[0].off, -1))
&& maybe_ne (lhs_ops[0].off, -1))
{
if (known_eq (lhs_ops[0].off, vr->operands[i].off))
i--, j--;
else if (vr->operands[i].opcode == MEM_REF
&& known_ne (vr->operands[i].off, -1))
&& maybe_ne (vr->operands[i].off, -1))
{
extra_off = vr->operands[i].off - lhs_ops[0].off;
i--, j--;