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[InstCombine] FoldShiftByConstant - create Scalar/Vector constant with ConstantInt::get(). NFCI. 

There's no need to create constant vector splats manually - missed this one in rG24dd0cd1edd5
This commit is contained in:
Simon Pilgrim 2020-10-12 18:39:30 +01:00
parent 1b962fdd5f
commit 4ff7136268
1 changed files with 1 additions and 4 deletions
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5
llvm/lib/Transforms/InstCombine/InstCombineShifts.cpp
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@ -776,11 +776,8 @@ Instruction *InstCombinerImpl::FoldShiftByConstant(Value *Op0, Constant *Op1,
Value *X = Builder.CreateBinOp(Op0BO->getOpcode(), V1, YS,
Op0BO->getOperand(0)->getName());
unsigned Op1Val = Op1C->getLimitedValue(TypeBits);
APInt Bits = APInt::getHighBitsSet(TypeBits, TypeBits - Op1Val);
Constant *Mask = ConstantInt::get(I.getContext(), Bits);
if (VectorType *VT = dyn_cast<VectorType>(X->getType()))
Mask = ConstantVector::getSplat(VT->getElementCount(), Mask);
Constant *Mask = ConstantInt::get(Ty, Bits);
return BinaryOperator::CreateAnd(X, Mask);
}