diff options
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 41ed449958..5f22fd7ae2 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -3090,11 +3090,17 @@ Instruction *InstCombiner::visitSRem(BinaryOperator &I) { } // If it's a constant vector, flip any negative values positive. - if (isa<VectorType>(I.getType())) { - if (ConstantVector *RHSV = dyn_cast<ConstantVector>(Op1)) { - unsigned VWidth = RHSV->getNumOperands(); - std::vector<Constant *> Elts(VWidth); + if (ConstantVector *RHSV = dyn_cast<ConstantVector>(Op1)) { + unsigned VWidth = RHSV->getNumOperands(); + + bool hasNegative = false; + for (unsigned i = 0; !hasNegative && i != VWidth; ++i) + if (ConstantInt *RHS = dyn_cast<ConstantInt>(RHSV->getOperand(i))) + if (RHS->getValue().isNegative()) + hasNegative = true; + if (hasNegative) { + std::vector<Constant *> Elts(VWidth); for (unsigned i = 0; i != VWidth; ++i) { if (ConstantInt *RHS = dyn_cast<ConstantInt>(RHSV->getOperand(i))) { if (RHS->getValue().isNegative()) |