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[x86] fix formatting; NFC

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llvm-svn: 288045
This commit is contained in:
Sanjay Patel 2016-11-28 17:39:21 +00:00
parent 4f50e2021b
commit 07d0147189
1 changed files with 14 additions and 16 deletions
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30
lib/Target/X86/X86ISelLowering.cpp
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@ -30007,7 +30007,7 @@ static SDValue combineOr(SDNode *N, SelectionDAG &DAG,
return SDValue();
}
// Generate NEG and CMOV for integer abs.
/// Generate NEG and CMOV for integer abs.
static SDValue combineIntegerAbs(SDNode *N, SelectionDAG &DAG) {
EVT VT = N->getValueType(0);
@ -30023,21 +30023,19 @@ static SDValue combineIntegerAbs(SDNode *N, SelectionDAG &DAG) {
// Check pattern of XOR(ADD(X,Y), Y) where Y is SRA(X, size(X)-1)
// and change it to SUB and CMOV.
if (VT.isInteger() && N->getOpcode() == ISD::XOR &&
N0.getOpcode() == ISD::ADD &&
N0.getOperand(1) == N1 &&
N1.getOpcode() == ISD::SRA &&
N1.getOperand(0) == N0.getOperand(0))
if (ConstantSDNode *Y1C = dyn_cast<ConstantSDNode>(N1.getOperand(1)))
if (Y1C->getAPIntValue() == VT.getSizeInBits()-1) {
// Generate SUB & CMOV.
SDValue Neg = DAG.getNode(X86ISD::SUB, DL, DAG.getVTList(VT, MVT::i32),
DAG.getConstant(0, DL, VT), N0.getOperand(0));
SDValue Ops[] = { N0.getOperand(0), Neg,
DAG.getConstant(X86::COND_GE, DL, MVT::i8),
SDValue(Neg.getNode(), 1) };
return DAG.getNode(X86ISD::CMOV, DL, DAG.getVTList(VT, MVT::Glue), Ops);
}
N0.getOpcode() == ISD::ADD && N0.getOperand(1) == N1 &&
N1.getOpcode() == ISD::SRA && N1.getOperand(0) == N0.getOperand(0)) {
auto *Y1C = dyn_cast<ConstantSDNode>(N1.getOperand(1));
if (Y1C && Y1C->getAPIntValue() == VT.getSizeInBits() - 1) {
// Generate SUB & CMOV.
SDValue Neg = DAG.getNode(X86ISD::SUB, DL, DAG.getVTList(VT, MVT::i32),
DAG.getConstant(0, DL, VT), N0.getOperand(0));
SDValue Ops[] = {N0.getOperand(0), Neg,
DAG.getConstant(X86::COND_GE, DL, MVT::i8),
SDValue(Neg.getNode(), 1)};
return DAG.getNode(X86ISD::CMOV, DL, DAG.getVTList(VT, MVT::Glue), Ops);
}
}
return SDValue();
}