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PR9838: Fix transform introduced in r127064 to not trigger when only one side of the icmp is an exact shift.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130954 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Friedman
2011-05-05 21:59:18 +00:00
parent 108709d4d1
commit b6e7cd655c
3 changed files with 13 additions and 2 deletions
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2
lib/Transforms/InstCombine/InstCombineCompares.cpp
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@@ -2400,7 +2400,7 @@ Instruction *InstCombiner::visitICmpInst(ICmpInst &I) {
// fall-through
case Instruction::SDiv:
case Instruction::AShr:
if (!BO0->isExact() && !BO1->isExact())
if (!BO0->isExact() || !BO1->isExact())
break;
return new ICmpInst(I.getPredicate(), BO0->getOperand(0),
BO1->getOperand(0));