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Make LowerVSETCC a static function and use MVT instead of EVT.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172969 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2013-01-20 09:02:22 +00:00
parent 0c8607ba6a
commit 26827f3dc5
2 changed files with 65 additions and 63 deletions
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127
lib/Target/X86/X86ISelLowering.cpp
View File

@ -9136,65 +9136,10 @@ SDValue X86TargetLowering::LowerToBT(SDValue And, ISD::CondCode CC,
return SDValue();
}
SDValue X86TargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const {
if (Op.getValueType().isVector()) return LowerVSETCC(Op, DAG);
assert(Op.getValueType() == MVT::i8 && "SetCC type must be 8-bit integer");
SDValue Op0 = Op.getOperand(0);
SDValue Op1 = Op.getOperand(1);
DebugLoc dl = Op.getDebugLoc();
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
// Optimize to BT if possible.
// Lower (X & (1 << N)) == 0 to BT(X, N).
// Lower ((X >>u N) & 1) != 0 to BT(X, N).
// Lower ((X >>s N) & 1) != 0 to BT(X, N).
if (Op0.getOpcode() == ISD::AND && Op0.hasOneUse() &&
Op1.getOpcode() == ISD::Constant &&
cast<ConstantSDNode>(Op1)->isNullValue() &&
(CC == ISD::SETEQ || CC == ISD::SETNE)) {
SDValue NewSetCC = LowerToBT(Op0, CC, dl, DAG);
if (NewSetCC.getNode())
return NewSetCC;
}
// Look for X == 0, X == 1, X != 0, or X != 1. We can simplify some forms of
// these.
if (Op1.getOpcode() == ISD::Constant &&
(cast<ConstantSDNode>(Op1)->getZExtValue() == 1 ||
cast<ConstantSDNode>(Op1)->isNullValue()) &&
(CC == ISD::SETEQ || CC == ISD::SETNE)) {
// If the input is a setcc, then reuse the input setcc or use a new one with
// the inverted condition.
if (Op0.getOpcode() == X86ISD::SETCC) {
X86::CondCode CCode = (X86::CondCode)Op0.getConstantOperandVal(0);
bool Invert = (CC == ISD::SETNE) ^
cast<ConstantSDNode>(Op1)->isNullValue();
if (!Invert) return Op0;
CCode = X86::GetOppositeBranchCondition(CCode);
return DAG.getNode(X86ISD::SETCC, dl, MVT::i8,
DAG.getConstant(CCode, MVT::i8), Op0.getOperand(1));
}
}
bool isFP = Op1.getValueType().isFloatingPoint();
unsigned X86CC = TranslateX86CC(CC, isFP, Op0, Op1, DAG);
if (X86CC == X86::COND_INVALID)
return SDValue();
SDValue EFLAGS = EmitCmp(Op0, Op1, X86CC, DAG);
EFLAGS = ConvertCmpIfNecessary(EFLAGS, DAG);
return DAG.getNode(X86ISD::SETCC, dl, MVT::i8,
DAG.getConstant(X86CC, MVT::i8), EFLAGS);
}
// Lower256IntVSETCC - Break a VSETCC 256-bit integer VSETCC into two new 128
// ones, and then concatenate the result back.
static SDValue Lower256IntVSETCC(SDValue Op, SelectionDAG &DAG) {
EVT VT = Op.getValueType();
MVT VT = Op.getValueType().getSimpleVT();
assert(VT.is256BitVector() && Op.getOpcode() == ISD::SETCC &&
"Unsupported value type for operation");
@ -9214,26 +9159,27 @@ static SDValue Lower256IntVSETCC(SDValue Op, SelectionDAG &DAG) {
SDValue RHS2 = Extract128BitVector(RHS, NumElems/2, DAG, dl);
// Issue the operation on the smaller types and concatenate the result back
MVT EltVT = VT.getVectorElementType().getSimpleVT();
EVT NewVT = MVT::getVectorVT(EltVT, NumElems/2);
MVT EltVT = VT.getVectorElementType();
MVT NewVT = MVT::getVectorVT(EltVT, NumElems/2);
return DAG.getNode(ISD::CONCAT_VECTORS, dl, VT,
DAG.getNode(Op.getOpcode(), dl, NewVT, LHS1, RHS1, CC),
DAG.getNode(Op.getOpcode(), dl, NewVT, LHS2, RHS2, CC));
}
SDValue X86TargetLowering::LowerVSETCC(SDValue Op, SelectionDAG &DAG) const {
static SDValue LowerVSETCC(SDValue Op, const X86Subtarget *Subtarget,
SelectionDAG &DAG) {
SDValue Cond;
SDValue Op0 = Op.getOperand(0);
SDValue Op1 = Op.getOperand(1);
SDValue CC = Op.getOperand(2);
EVT VT = Op.getValueType();
MVT VT = Op.getValueType().getSimpleVT();
ISD::CondCode SetCCOpcode = cast<CondCodeSDNode>(CC)->get();
bool isFP = Op.getOperand(1).getValueType().isFloatingPoint();
bool isFP = Op.getOperand(1).getValueType().getSimpleVT().isFloatingPoint();
DebugLoc dl = Op.getDebugLoc();
if (isFP) {
#ifndef NDEBUG
EVT EltVT = Op0.getValueType().getVectorElementType();
MVT EltVT = Op0.getValueType().getVectorElementType().getSimpleVT();
assert(EltVT == MVT::f32 || EltVT == MVT::f64);
#endif
@ -9374,6 +9320,63 @@ SDValue X86TargetLowering::LowerVSETCC(SDValue Op, SelectionDAG &DAG) const {
return Result;
}
SDValue X86TargetLowering::LowerSETCC(SDValue Op, SelectionDAG &DAG) const {
MVT VT = Op.getValueType().getSimpleVT();
if (VT.isVector()) return LowerVSETCC(Op, Subtarget, DAG);
assert(VT == MVT::i8 && "SetCC type must be 8-bit integer");
SDValue Op0 = Op.getOperand(0);
SDValue Op1 = Op.getOperand(1);
DebugLoc dl = Op.getDebugLoc();
ISD::CondCode CC = cast<CondCodeSDNode>(Op.getOperand(2))->get();
// Optimize to BT if possible.
// Lower (X & (1 << N)) == 0 to BT(X, N).
// Lower ((X >>u N) & 1) != 0 to BT(X, N).
// Lower ((X >>s N) & 1) != 0 to BT(X, N).
if (Op0.getOpcode() == ISD::AND && Op0.hasOneUse() &&
Op1.getOpcode() == ISD::Constant &&
cast<ConstantSDNode>(Op1)->isNullValue() &&
(CC == ISD::SETEQ || CC == ISD::SETNE)) {
SDValue NewSetCC = LowerToBT(Op0, CC, dl, DAG);
if (NewSetCC.getNode())
return NewSetCC;
}
// Look for X == 0, X == 1, X != 0, or X != 1. We can simplify some forms of
// these.
if (Op1.getOpcode() == ISD::Constant &&
(cast<ConstantSDNode>(Op1)->getZExtValue() == 1 ||
cast<ConstantSDNode>(Op1)->isNullValue()) &&
(CC == ISD::SETEQ || CC == ISD::SETNE)) {
// If the input is a setcc, then reuse the input setcc or use a new one with
// the inverted condition.
if (Op0.getOpcode() == X86ISD::SETCC) {
X86::CondCode CCode = (X86::CondCode)Op0.getConstantOperandVal(0);
bool Invert = (CC == ISD::SETNE) ^
cast<ConstantSDNode>(Op1)->isNullValue();
if (!Invert) return Op0;
CCode = X86::GetOppositeBranchCondition(CCode);
return DAG.getNode(X86ISD::SETCC, dl, MVT::i8,
DAG.getConstant(CCode, MVT::i8), Op0.getOperand(1));
}
}
bool isFP = Op1.getValueType().getSimpleVT().isFloatingPoint();
unsigned X86CC = TranslateX86CC(CC, isFP, Op0, Op1, DAG);
if (X86CC == X86::COND_INVALID)
return SDValue();
SDValue EFLAGS = EmitCmp(Op0, Op1, X86CC, DAG);
EFLAGS = ConvertCmpIfNecessary(EFLAGS, DAG);
return DAG.getNode(X86ISD::SETCC, dl, MVT::i8,
DAG.getConstant(X86CC, MVT::i8), EFLAGS);
}
// isX86LogicalCmp - Return true if opcode is a X86 logical comparison.
static bool isX86LogicalCmp(SDValue Op) {
unsigned Opc = Op.getNode()->getOpcode();

1
lib/Target/X86/X86ISelLowering.h
View File

@ -822,7 +822,6 @@ namespace llvm {
SDValue LowerToBT(SDValue And, ISD::CondCode CC,
DebugLoc dl, SelectionDAG &DAG) const;
SDValue LowerSETCC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerVSETCC(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerBRCOND(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerMEMSET(SDValue Op, SelectionDAG &DAG) const;