diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp index 30861bfe6c5..7939bbf5ca6 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp @@ -1319,6 +1319,8 @@ Instruction *InstCombiner::visitURem(BinaryOperator &I) { Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1); Type *Ty = I.getType(); if (isKnownToBeAPowerOfTwo(Op1, /*OrZero*/ true, 0, &I)) { + // This may increase instruction count, we don't enforce that Y is a + // constant. Constant *N1 = Constant::getAllOnesValue(Ty); Value *Add = Builder.CreateAdd(Op1, N1); return BinaryOperator::CreateAnd(Op0, Add); |
