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-rw-r--r--llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
index 2e2116c60e6..4f1f1949976 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp
@@ -861,7 +861,7 @@ static bool checkRippleForAdd(const APInt &Op0KnownZero,
// Find the most significant known 0 other than the sign bit.
int BitWidth = Op0KnownZero.getBitWidth();
APInt Op0KnownZeroTemp(Op0KnownZero);
- Op0KnownZeroTemp.clearBit(BitWidth - 1);
+ Op0KnownZeroTemp.clearSignBit();
int Op0ZeroPosition = BitWidth - Op0KnownZeroTemp.countLeadingZeros() - 1;
int Op1OnePosition = BitWidth - Op1MaybeOne.countLeadingZeros() - 1;
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