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Simplify vector splat code. No functionality change. 

llvm-svn: 171350
This commit is contained in:
Benjamin Kramer 2013-01-01 20:08:10 +00:00
parent 614b5e85b9
commit 7a14bc0f4c
1 changed files with 2 additions and 18 deletions
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20
clang/lib/CodeGen/CGExprScalar.cpp
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@ -712,17 +712,9 @@ Value *ScalarExprEmitter::EmitScalarConversion(Value *Src, QualType SrcType,
QualType EltTy = DstType->getAs<ExtVectorType>()->getElementType();
llvm::Value *Elt = EmitScalarConversion(Src, SrcType, EltTy);
// Insert the element in element zero of an undef vector
llvm::Value *UnV = llvm::UndefValue::get(DstTy);
llvm::Value *Idx = Builder.getInt32(0);
UnV = Builder.CreateInsertElement(UnV, Elt, Idx);
// Splat the element across to all elements
unsigned NumElements = cast<llvm::VectorType>(DstTy)->getNumElements();
llvm::Constant *Mask = llvm::ConstantVector::getSplat(NumElements,
Builder.getInt32(0));
llvm::Value *Yay = Builder.CreateShuffleVector(UnV, UnV, Mask, "splat");
return Yay;
return Builder.CreateVectorSplat(NumElements, Elt, "splat");
}
// Allow bitcast from vector to integer/fp of the same size.
@ -1355,17 +1347,9 @@ Value *ScalarExprEmitter::VisitCastExpr(CastExpr *CE) {
Elt = EmitScalarConversion(Elt, E->getType(),
DestTy->getAs<VectorType>()->getElementType());
// Insert the element in element zero of an undef vector
llvm::Value *UnV = llvm::UndefValue::get(DstTy);
llvm::Value *Idx = Builder.getInt32(0);
UnV = Builder.CreateInsertElement(UnV, Elt, Idx);
// Splat the element across to all elements
unsigned NumElements = cast<llvm::VectorType>(DstTy)->getNumElements();
llvm::Constant *Zero = Builder.getInt32(0);
llvm::Constant *Mask = llvm::ConstantVector::getSplat(NumElements, Zero);
llvm::Value *Yay = Builder.CreateShuffleVector(UnV, UnV, Mask, "splat");
return Yay;
return Builder.CreateVectorSplat(NumElements, Elt, "splat");;
}
case CK_IntegralCast: