[InstCombine] Call hasNoSignedWrap instead of hasNoUnsignedWrap to get the NSW flag when handling Add in SimplifyDemandedUseBits.

This is a typo from r311789.

This should fix PR34349.

llvm-svn: 311902

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
index 39d1dfe..cda2ce6 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@@ -426,7 +426,7 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
       return I->getOperand(1);
 
     // Otherwise just compute the known bits of the result.
-    bool NSW = cast<OverflowingBinaryOperator>(I)->hasNoUnsignedWrap();
+    bool NSW = cast<OverflowingBinaryOperator>(I)->hasNoSignedWrap();
     Known = KnownBits::computeForAddSub(I->getOpcode() == Instruction::Add,
                                         NSW, LHSKnown, RHSKnown);
     break;