diff options
Diffstat (limited to 'lib/Transforms/Scalar/InstructionCombining.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index f631d61457..1f80444632 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -6582,7 +6582,8 @@ Instruction *InstCombiner::visitICmpInstWithInstAndIntCst(ICmpInst &ICI, // preferable because it allows the C<<Y expression to be hoisted out // of a loop if Y is invariant and X is not. if (Shift && Shift->hasOneUse() && RHSV == 0 && - ICI.isEquality() && !Shift->isArithmeticShift()) { + ICI.isEquality() && !Shift->isArithmeticShift() && + !isa<Constant>(Shift->getOperand(0))) { // Compute C << Y. Value *NS; if (Shift->getOpcode() == Instruction::LShr) { |