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This is the correct fix for PR1427. This fixes mmx-shuffle.ll and doesn't

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cause other regressions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37160 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-05-17 17:13:13 +00:00
parent f840202953
commit 07c70cd866
1 changed files with 5 additions and 2 deletions
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7
lib/Target/X86/X86ISelLowering.cpp
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@ -2675,7 +2675,8 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDOperand Op, SelectionDAG &DAG) {
return Op;
}
if (X86::isSHUFPMask(PermMask.Val))
if (X86::isSHUFPMask(PermMask.Val) &&
MVT::getSizeInBits(VT) != 64) // Don't do this for MMX.
return Op;
// Handle v8i16 shuffle high / low shuffle node pair.
@ -2712,7 +2713,9 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDOperand Op, SelectionDAG &DAG) {
}
}
if (NumElems == 4) {
if (NumElems == 4 &&
// Don't do this for MMX.
MVT::getSizeInBits(VT) != 64) {
MVT::ValueType MaskVT = PermMask.getValueType();
MVT::ValueType MaskEVT = MVT::getVectorBaseType(MaskVT);
SmallVector<std::pair<int, int>, 8> Locs;