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Simplify code a bit. No functional change intended.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157044 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2012-05-18 07:07:36 +00:00
parent b82b5abf78
commit be97ae9e89
1 changed files with 8 additions and 14 deletions
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22
lib/Target/X86/X86ISelLowering.cpp
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@ -5644,13 +5644,10 @@ X86TargetLowering::LowerVECTOR_SHUFFLEv8i16(SDValue Op,
bool TwoInputs = V1Used && V2Used;
for (unsigned i = 0; i != 8; ++i) {
int EltIdx = MaskVals[i] * 2;
if (TwoInputs && (EltIdx >= 16)) {
pshufbMask.push_back(DAG.getConstant(0x80, MVT::i8));
pshufbMask.push_back(DAG.getConstant(0x80, MVT::i8));
continue;
}
pshufbMask.push_back(DAG.getConstant(EltIdx, MVT::i8));
pshufbMask.push_back(DAG.getConstant(EltIdx+1, MVT::i8));
int Idx0 = (TwoInputs && (EltIdx >= 16)) ? 0x80 : EltIdx;
int Idx1 = (TwoInputs && (EltIdx >= 16)) ? 0x80 : EltIdx+1;
pshufbMask.push_back(DAG.getConstant(Idx0, MVT::i8));
pshufbMask.push_back(DAG.getConstant(Idx1, MVT::i8));
}
V1 = DAG.getNode(ISD::BITCAST, dl, MVT::v16i8, V1);
V1 = DAG.getNode(X86ISD::PSHUFB, dl, MVT::v16i8, V1,
@ -5664,13 +5661,10 @@ X86TargetLowering::LowerVECTOR_SHUFFLEv8i16(SDValue Op,
pshufbMask.clear();
for (unsigned i = 0; i != 8; ++i) {
int EltIdx = MaskVals[i] * 2;
if (EltIdx < 16) {
pshufbMask.push_back(DAG.getConstant(0x80, MVT::i8));
pshufbMask.push_back(DAG.getConstant(0x80, MVT::i8));
continue;
}
pshufbMask.push_back(DAG.getConstant(EltIdx - 16, MVT::i8));
pshufbMask.push_back(DAG.getConstant(EltIdx - 15, MVT::i8));
int Idx0 = (EltIdx < 16) ? 0x80 : EltIdx - 16;
int Idx1 = (EltIdx < 16) ? 0x80 : EltIdx - 15;
pshufbMask.push_back(DAG.getConstant(Idx0, MVT::i8));
pshufbMask.push_back(DAG.getConstant(Idx1, MVT::i8));
}
V2 = DAG.getNode(ISD::BITCAST, dl, MVT::v16i8, V2);
V2 = DAG.getNode(X86ISD::PSHUFB, dl, MVT::v16i8, V2,