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Tidy up by removing some 'else' after 'return'

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llvm-svn: 155336
This commit is contained in:
Craig Topper 2012-04-23 06:57:04 +00:00
parent c315e7b6db
commit f9811e8f28
1 changed files with 60 additions and 44 deletions
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104
lib/Target/X86/X86ISelLowering.cpp
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@ -3048,10 +3048,12 @@ static unsigned TranslateX86CC(ISD::CondCode SetCCOpcode, bool isFP,
// X > -1 -> X == 0, jump !sign.
RHS = DAG.getConstant(0, RHS.getValueType());
return X86::COND_NS;
} else if (SetCCOpcode == ISD::SETLT && RHSC->isNullValue()) {
}
if (SetCCOpcode == ISD::SETLT && RHSC->isNullValue()) {
// X < 0 -> X == 0, jump on sign.
return X86::COND_S;
} else if (SetCCOpcode == ISD::SETLT && RHSC->getZExtValue() == 1) {
}
if (SetCCOpcode == ISD::SETLT && RHSC->getZExtValue() == 1) {
// X < 1 -> X <= 0
RHS = DAG.getConstant(0, RHS.getValueType());
return X86::COND_LE;
@ -4857,8 +4859,9 @@ static SDValue EltsFromConsecutiveLoads(EVT VT, SmallVectorImpl<SDValue> &Elts,
LDBase->getPointerInfo(),
LDBase->isVolatile(), LDBase->isNonTemporal(),
LDBase->isInvariant(), LDBase->getAlignment());
} else if (NumElems == 4 && LastLoadedElt == 1 &&
DAG.getTargetLoweringInfo().isTypeLegal(MVT::v2i64)) {
}
if (NumElems == 4 && LastLoadedElt == 1 &&
DAG.getTargetLoweringInfo().isTypeLegal(MVT::v2i64)) {
SDVTList Tys = DAG.getVTList(MVT::v2i64, MVT::Other);
SDValue Ops[] = { LDBase->getChain(), LDBase->getBasePtr() };
SDValue ResNode =
@ -6081,7 +6084,9 @@ LowerVECTOR_SHUFFLE_128v4(ShuffleVectorSDNode *SVOp, SelectionDAG &DAG) {
}
return DAG.getVectorShuffle(VT, dl, V1, V1, &Mask2[0]);
} else if (NumLo == 3 || NumHi == 3) {
}
if (NumLo == 3 || NumHi == 3) {
// Otherwise, we must have three elements from one vector, call it X, and
// one element from the other, call it Y. First, use a shufps to build an
// intermediate vector with the one element from Y and the element from X
@ -6117,17 +6122,17 @@ LowerVECTOR_SHUFFLE_128v4(ShuffleVectorSDNode *SVOp, SelectionDAG &DAG) {
Mask1[2] = HiIndex & 1 ? 6 : 4;
Mask1[3] = HiIndex & 1 ? 4 : 6;
return DAG.getVectorShuffle(VT, dl, V1, V2, &Mask1[0]);
} else {
Mask1[0] = HiIndex & 1 ? 2 : 0;
Mask1[1] = HiIndex & 1 ? 0 : 2;
Mask1[2] = PermMask[2];
Mask1[3] = PermMask[3];
if (Mask1[2] >= 0)
Mask1[2] += 4;
if (Mask1[3] >= 0)
Mask1[3] += 4;
return DAG.getVectorShuffle(VT, dl, V2, V1, &Mask1[0]);
}
Mask1[0] = HiIndex & 1 ? 2 : 0;
Mask1[1] = HiIndex & 1 ? 0 : 2;
Mask1[2] = PermMask[2];
Mask1[3] = PermMask[3];
if (Mask1[2] >= 0)
Mask1[2] += 4;
if (Mask1[3] >= 0)
Mask1[3] += 4;
return DAG.getVectorShuffle(VT, dl, V2, V1, &Mask1[0]);
}
// Break it into (shuffle shuffle_hi, shuffle_lo).
@ -6538,11 +6543,10 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
// new vector_shuffle with the corrected mask.p
SmallVector<int, 8> NewMask(M.begin(), M.end());
NormalizeMask(NewMask, NumElems);
if (isUNPCKLMask(NewMask, VT, HasAVX2, true)) {
if (isUNPCKLMask(NewMask, VT, HasAVX2, true))
return getTargetShuffleNode(X86ISD::UNPCKL, dl, VT, V1, V2, DAG);
} else if (isUNPCKHMask(NewMask, VT, HasAVX2, true)) {
if (isUNPCKHMask(NewMask, VT, HasAVX2, true))
return getTargetShuffleNode(X86ISD::UNPCKH, dl, VT, V1, V2, DAG);
}
}
if (Commuted) {
@ -6688,7 +6692,9 @@ X86TargetLowering::LowerEXTRACT_VECTOR_ELT_SSE4(SDValue Op,
SDValue Assert = DAG.getNode(ISD::AssertZext, dl, MVT::i32, Extract,
DAG.getValueType(VT));
return DAG.getNode(ISD::TRUNCATE, dl, VT, Assert);
} else if (VT.getSizeInBits() == 16) {
}
if (VT.getSizeInBits() == 16) {
unsigned Idx = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
// If Idx is 0, it's cheaper to do a move instead of a pextrw.
if (Idx == 0)
@ -6703,7 +6709,9 @@ X86TargetLowering::LowerEXTRACT_VECTOR_ELT_SSE4(SDValue Op,
SDValue Assert = DAG.getNode(ISD::AssertZext, dl, MVT::i32, Extract,
DAG.getValueType(VT));
return DAG.getNode(ISD::TRUNCATE, dl, VT, Assert);
} else if (VT == MVT::f32) {
}
if (VT == MVT::f32) {
// EXTRACTPS outputs to a GPR32 register which will require a movd to copy
// the result back to FR32 register. It's only worth matching if the
// result has a single use which is a store or a bitcast to i32. And in
@ -6723,7 +6731,9 @@ X86TargetLowering::LowerEXTRACT_VECTOR_ELT_SSE4(SDValue Op,
Op.getOperand(0)),
Op.getOperand(1));
return DAG.getNode(ISD::BITCAST, dl, MVT::f32, Extract);
} else if (VT == MVT::i32 || VT == MVT::i64) {
}
if (VT == MVT::i32 || VT == MVT::i64) {
// ExtractPS/pextrq works with constant index.
if (isa<ConstantSDNode>(Op.getOperand(1)))
return Op;
@ -6784,7 +6794,9 @@ X86TargetLowering::LowerEXTRACT_VECTOR_ELT(SDValue Op,
SDValue Assert = DAG.getNode(ISD::AssertZext, dl, EltVT, Extract,
DAG.getValueType(VT));
return DAG.getNode(ISD::TRUNCATE, dl, VT, Assert);
} else if (VT.getSizeInBits() == 32) {
}
if (VT.getSizeInBits() == 32) {
unsigned Idx = cast<ConstantSDNode>(Op.getOperand(1))->getZExtValue();
if (Idx == 0)
return Op;
@ -6796,7 +6808,9 @@ X86TargetLowering::LowerEXTRACT_VECTOR_ELT(SDValue Op,
DAG.getUNDEF(VVT), Mask);
return DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, VT, Vec,
DAG.getIntPtrConstant(0));
} else if (VT.getSizeInBits() == 64) {
}
if (VT.getSizeInBits() == 64) {
// FIXME: .td only matches this for <2 x f64>, not <2 x i64> on 32b
// FIXME: seems like this should be unnecessary if mov{h,l}pd were taught
// to match extract_elt for f64.
@ -6849,7 +6863,9 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT_SSE4(SDValue Op,
if (N2.getValueType() != MVT::i32)
N2 = DAG.getIntPtrConstant(cast<ConstantSDNode>(N2)->getZExtValue());
return DAG.getNode(Opc, dl, VT, N0, N1, N2);
} else if (EltVT == MVT::f32 && isa<ConstantSDNode>(N2)) {
}
if (EltVT == MVT::f32 && isa<ConstantSDNode>(N2)) {
// Bits [7:6] of the constant are the source select. This will always be
// zero here. The DAG Combiner may combine an extract_elt index into these
// bits. For example (insert (extract, 3), 2) could be matched by putting
@ -6862,8 +6878,9 @@ X86TargetLowering::LowerINSERT_VECTOR_ELT_SSE4(SDValue Op,
// Create this as a scalar to vector..
N1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, MVT::v4f32, N1);
return DAG.getNode(X86ISD::INSERTPS, dl, VT, N0, N1, N2);
} else if ((EltVT == MVT::i32 || EltVT == MVT::i64) &&
isa<ConstantSDNode>(N2)) {
}
if ((EltVT == MVT::i32 || EltVT == MVT::i64) && isa<ConstantSDNode>(N2)) {
// PINSR* works with constant index.
return Op;
}
@ -7673,12 +7690,11 @@ SDValue X86TargetLowering::LowerUINT_TO_FP_i32(SDValue Op,
// Handle final rounding.
EVT DestVT = Op.getValueType();
if (DestVT.bitsLT(MVT::f64)) {
if (DestVT.bitsLT(MVT::f64))
return DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub,
DAG.getIntPtrConstant(0));
} else if (DestVT.bitsGT(MVT::f64)) {
if (DestVT.bitsGT(MVT::f64))
return DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub);
}
// Handle final rounding.
return Sub;
@ -7699,10 +7715,9 @@ SDValue X86TargetLowering::LowerUINT_TO_FP(SDValue Op,
EVT DstVT = Op.getValueType();
if (SrcVT == MVT::i64 && DstVT == MVT::f64 && X86ScalarSSEf64)
return LowerUINT_TO_FP_i64(Op, DAG);
else if (SrcVT == MVT::i32 && X86ScalarSSEf64)
if (SrcVT == MVT::i32 && X86ScalarSSEf64)
return LowerUINT_TO_FP_i32(Op, DAG);
else if (Subtarget->is64Bit() &&
SrcVT == MVT::i64 && DstVT == MVT::f32)
if (Subtarget->is64Bit() && SrcVT == MVT::i64 && DstVT == MVT::f32)
return SDValue();
// Make a 64-bit buffer, and use it to build an FILD.
@ -7879,9 +7894,9 @@ SDValue X86TargetLowering::LowerFP_TO_SINT(SDValue Op,
return DAG.getLoad(Op.getValueType(), Op.getDebugLoc(),
FIST, StackSlot, MachinePointerInfo(),
false, false, false, 0);
else
// The node is the result.
return FIST;
// The node is the result.
return FIST;
}
SDValue X86TargetLowering::LowerFP_TO_UINT(SDValue Op,
@ -7896,9 +7911,9 @@ SDValue X86TargetLowering::LowerFP_TO_UINT(SDValue Op,
return DAG.getLoad(Op.getValueType(), Op.getDebugLoc(),
FIST, StackSlot, MachinePointerInfo(),
false, false, false, 0);
else
// The node is the result.
return FIST;
// The node is the result.
return FIST;
}
SDValue X86TargetLowering::LowerFABS(SDValue Op,
@ -7948,12 +7963,12 @@ SDValue X86TargetLowering::LowerFNEG(SDValue Op, SelectionDAG &DAG) const {
MVT XORVT = VT.getSizeInBits() == 128 ? MVT::v2i64 : MVT::v4i64;
return DAG.getNode(ISD::BITCAST, dl, VT,
DAG.getNode(ISD::XOR, dl, XORVT,
DAG.getNode(ISD::BITCAST, dl, XORVT,
Op.getOperand(0)),
DAG.getNode(ISD::BITCAST, dl, XORVT, Mask)));
} else {
return DAG.getNode(X86ISD::FXOR, dl, VT, Op.getOperand(0), Mask);
DAG.getNode(ISD::BITCAST, dl, XORVT,
Op.getOperand(0)),
DAG.getNode(ISD::BITCAST, dl, XORVT, Mask)));
}
return DAG.getNode(X86ISD::FXOR, dl, VT, Op.getOperand(0), Mask);
}
SDValue X86TargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const {
@ -8415,7 +8430,8 @@ SDValue X86TargetLowering::LowerVSETCC(SDValue Op, SelectionDAG &DAG) const {
EQ = DAG.getNode(X86ISD::CMPP, dl, VT, Op0, Op1,
DAG.getConstant(0, MVT::i8));
return DAG.getNode(ISD::OR, dl, VT, UNORD, EQ);
} else if (SetCCOpcode == ISD::SETONE) {
}
if (SetCCOpcode == ISD::SETONE) {
SDValue ORD, NEQ;
ORD = DAG.getNode(X86ISD::CMPP, dl, VT, Op0, Op1,
DAG.getConstant(7, MVT::i8));