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path: root/lib/Transforms/InstCombine/InstCombineAddSub.cpp
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-rw-r--r--lib/Transforms/InstCombine/InstCombineAddSub.cpp5
1 files changed, 0 insertions, 5 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/lib/Transforms/InstCombine/InstCombineAddSub.cpp
index 00f9974125..99b62f8d05 100644
--- a/lib/Transforms/InstCombine/InstCombineAddSub.cpp
+++ b/lib/Transforms/InstCombine/InstCombineAddSub.cpp
@@ -544,11 +544,6 @@ Instruction *InstCombiner::visitSub(BinaryOperator &I) {
if (Instruction *R = FoldOpIntoSelect(I, SI))
return R;
- // C - zext(bool) -> bool ? C - 1 : C
- if (ZExtInst *ZI = dyn_cast<ZExtInst>(Op1))
- if (ZI->getSrcTy()->isIntegerTy(1))
- return SelectInst::Create(ZI->getOperand(0), SubOne(C), C);
-
// C-(X+C2) --> (C-C2)-X
ConstantInt *C2;
if (match(Op1, m_Add(m_Value(X), m_ConstantInt(C2))))