diff options
Diffstat (limited to 'lib/Transforms/InstCombine/InstCombineShifts.cpp')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineShifts.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineShifts.cpp b/lib/Transforms/InstCombine/InstCombineShifts.cpp index 988f29e..395d79d 100644 --- a/lib/Transforms/InstCombine/InstCombineShifts.cpp +++ b/lib/Transforms/InstCombine/InstCombineShifts.cpp @@ -617,13 +617,16 @@ Instruction *InstCombiner::FoldShiftByConstant(Value *Op0, ConstantInt *Op1, } Instruction *InstCombiner::visitShl(BinaryOperator &I) { - if (Value *V = SimplifyShlInst(I.getOperand(0), I.getOperand(1), TD)) + if (Value *V = SimplifyShlInst(I.getOperand(0), I.getOperand(1), + I.hasNoSignedWrap(), I.hasNoUnsignedWrap(), + TD)) return ReplaceInstUsesWith(I, V); return commonShiftTransforms(I); } Instruction *InstCombiner::visitLShr(BinaryOperator &I) { - if (Value *V = SimplifyLShrInst(I.getOperand(0), I.getOperand(1), TD)) + if (Value *V = SimplifyLShrInst(I.getOperand(0), I.getOperand(1), + I.isExact(), TD)) return ReplaceInstUsesWith(I, V); if (Instruction *R = commonShiftTransforms(I)) @@ -652,7 +655,8 @@ Instruction *InstCombiner::visitLShr(BinaryOperator &I) { } Instruction *InstCombiner::visitAShr(BinaryOperator &I) { - if (Value *V = SimplifyAShrInst(I.getOperand(0), I.getOperand(1), TD)) + if (Value *V = SimplifyAShrInst(I.getOperand(0), I.getOperand(1), + I.isExact(), TD)) return ReplaceInstUsesWith(I, V); if (Instruction *R = commonShiftTransforms(I)) |