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Teach getTypeToTransformTo to return something

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sensible for vectors being scalarized.  Note
that this method can't return anything very
sensible when splitting non-power-of-two vectors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57839 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2008-10-20 16:24:25 +00:00
parent b5f68e241f
commit 9a2c1d3c46
1 changed files with 5 additions and 4 deletions

9
include/llvm/Target/TargetLowering.h

@ -209,10 +209,11 @@ public:
return NVT;
}
if (VT.isVector())
return MVT::getVectorVT(VT.getVectorElementType(),
VT.getVectorNumElements() / 2);
if (VT.isInteger()) {
if (VT.isVector()) {
unsigned NumElts = VT.getVectorNumElements();
MVT EltVT = VT.getVectorElementType();
return (NumElts == 1) ? EltVT : MVT::getVectorVT(EltVT, NumElts / 2);
} else if (VT.isInteger()) {
MVT NVT = VT.getRoundIntegerType();
if (NVT == VT)
// Size is a power of two - expand to half the size.