diff options
| -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 c3d6f1465e..7a3b97783b 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -3988,7 +3988,8 @@ Instruction *InstCombiner::visitSetCondInst(SetCondInst &I) { // 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() && CI->isNullValue() && - I.isEquality() && !Shift->isArithmeticShift()) { + I.isEquality() && !Shift->isArithmeticShift() && + isa<Instruction>(Shift->getOperand(0))) { // Compute C << Y. Value *NS; if (Shift->getOpcode() == Instruction::Shr) { |