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SCEV: Actually set overflow flags on add expressions.

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setFlags doesn't modify its arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145007 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-11-20 10:24:36 +00:00
parent 2901243fda
commit 13c3c75176
1 changed files with 2 additions and 2 deletions
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4
lib/Analysis/ScalarEvolution.cpp
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@ -3601,9 +3601,9 @@ const SCEV *ScalarEvolution::createSCEV(Value *V) {
SCEV::NoWrapFlags Flags = SCEV::FlagAnyWrap;
OverflowingBinaryOperator *OBO = cast<OverflowingBinaryOperator>(V);
if (OBO->hasNoSignedWrap())
setFlags(Flags, SCEV::FlagNSW);
Flags = setFlags(Flags, SCEV::FlagNSW);
if (OBO->hasNoUnsignedWrap())
setFlags(Flags, SCEV::FlagNUW);
Flags = setFlags(Flags, SCEV::FlagNUW);
return getAddExpr(AddOps, Flags);
}
case Instruction::Mul: {