#include "llvm/Target/TargetLowering.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/GlobalVariable.h"
#include "llvm/DerivedTypes.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineJumpTableInfo.h"
+#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/ErrorHandling.h"
Names[RTLIB::FLOOR_F64] = "floor";
Names[RTLIB::FLOOR_F80] = "floorl";
Names[RTLIB::FLOOR_PPCF128] = "floorl";
+ Names[RTLIB::COPYSIGN_F32] = "copysignf";
+ Names[RTLIB::COPYSIGN_F64] = "copysign";
+ Names[RTLIB::COPYSIGN_F80] = "copysignl";
+ Names[RTLIB::COPYSIGN_PPCF128] = "copysignl";
Names[RTLIB::FPEXT_F32_F64] = "__extendsfdf2";
+ Names[RTLIB::FPEXT_F16_F32] = "__gnu_h2f_ieee";
+ Names[RTLIB::FPROUND_F32_F16] = "__gnu_f2h_ieee";
Names[RTLIB::FPROUND_F64_F32] = "__truncdfsf2";
Names[RTLIB::FPROUND_F80_F32] = "__truncxfsf2";
Names[RTLIB::FPROUND_PPCF128_F32] = "__trunctfsf2";
Names[RTLIB::FPROUND_F80_F64] = "__truncxfdf2";
Names[RTLIB::FPROUND_PPCF128_F64] = "__trunctfdf2";
- Names[RTLIB::FPTOSINT_F32_I8] = "__fixsfi8";
- Names[RTLIB::FPTOSINT_F32_I16] = "__fixsfi16";
+ Names[RTLIB::FPTOSINT_F32_I8] = "__fixsfqi";
+ Names[RTLIB::FPTOSINT_F32_I16] = "__fixsfhi";
Names[RTLIB::FPTOSINT_F32_I32] = "__fixsfsi";
Names[RTLIB::FPTOSINT_F32_I64] = "__fixsfdi";
Names[RTLIB::FPTOSINT_F32_I128] = "__fixsfti";
+ Names[RTLIB::FPTOSINT_F64_I8] = "__fixdfqi";
+ Names[RTLIB::FPTOSINT_F64_I16] = "__fixdfhi";
Names[RTLIB::FPTOSINT_F64_I32] = "__fixdfsi";
Names[RTLIB::FPTOSINT_F64_I64] = "__fixdfdi";
Names[RTLIB::FPTOSINT_F64_I128] = "__fixdfti";
Names[RTLIB::FPTOSINT_PPCF128_I32] = "__fixtfsi";
Names[RTLIB::FPTOSINT_PPCF128_I64] = "__fixtfdi";
Names[RTLIB::FPTOSINT_PPCF128_I128] = "__fixtfti";
- Names[RTLIB::FPTOUINT_F32_I8] = "__fixunssfi8";
- Names[RTLIB::FPTOUINT_F32_I16] = "__fixunssfi16";
+ Names[RTLIB::FPTOUINT_F32_I8] = "__fixunssfqi";
+ Names[RTLIB::FPTOUINT_F32_I16] = "__fixunssfhi";
Names[RTLIB::FPTOUINT_F32_I32] = "__fixunssfsi";
Names[RTLIB::FPTOUINT_F32_I64] = "__fixunssfdi";
Names[RTLIB::FPTOUINT_F32_I128] = "__fixunssfti";
+ Names[RTLIB::FPTOUINT_F64_I8] = "__fixunsdfqi";
+ Names[RTLIB::FPTOUINT_F64_I16] = "__fixunsdfhi";
Names[RTLIB::FPTOUINT_F64_I32] = "__fixunsdfsi";
Names[RTLIB::FPTOUINT_F64_I64] = "__fixunsdfdi";
Names[RTLIB::FPTOUINT_F64_I128] = "__fixunsdfti";
if (RetVT == MVT::f64)
return FPEXT_F32_F64;
}
+
return UNKNOWN_LIBCALL;
}
if (OpVT == MVT::ppcf128)
return FPROUND_PPCF128_F64;
}
+
return UNKNOWN_LIBCALL;
}
if (RetVT == MVT::i128)
return FPTOSINT_F32_I128;
} else if (OpVT == MVT::f64) {
+ if (RetVT == MVT::i8)
+ return FPTOSINT_F64_I8;
+ if (RetVT == MVT::i16)
+ return FPTOSINT_F64_I16;
if (RetVT == MVT::i32)
return FPTOSINT_F64_I32;
if (RetVT == MVT::i64)
if (RetVT == MVT::i128)
return FPTOUINT_F32_I128;
} else if (OpVT == MVT::f64) {
+ if (RetVT == MVT::i8)
+ return FPTOUINT_F64_I8;
+ if (RetVT == MVT::i16)
+ return FPTOUINT_F64_I16;
if (RetVT == MVT::i32)
return FPTOUINT_F64_I32;
if (RetVT == MVT::i64)
}
/// NOTE: The constructor takes ownership of TLOF.
-TargetLowering::TargetLowering(TargetMachine &tm,TargetLoweringObjectFile *tlof)
+TargetLowering::TargetLowering(const TargetMachine &tm,
+ const TargetLoweringObjectFile *tlof)
: TM(tm), TD(TM.getTargetData()), TLOF(*tlof) {
// All operations default to being supported.
memset(OpActions, 0, sizeof(OpActions));
memset(LoadExtActions, 0, sizeof(LoadExtActions));
memset(TruncStoreActions, 0, sizeof(TruncStoreActions));
memset(IndexedModeActions, 0, sizeof(IndexedModeActions));
- memset(ConvertActions, 0, sizeof(ConvertActions));
memset(CondCodeActions, 0, sizeof(CondCodeActions));
// Set default actions for various operations.
setOperationAction(ISD::TRAP, MVT::Other, Expand);
IsLittleEndian = TD->isLittleEndian();
- UsesGlobalOffsetTable = false;
ShiftAmountTy = PointerTy = MVT::getIntegerVT(8*TD->getPointerSize());
memset(RegClassForVT, 0,MVT::LAST_VALUETYPE*sizeof(TargetRegisterClass*));
memset(TargetDAGCombineArray, 0, array_lengthof(TargetDAGCombineArray));
InitLibcallNames(LibcallRoutineNames);
InitCmpLibcallCCs(CmpLibcallCCs);
InitLibcallCallingConvs(LibcallCallingConvs);
-
- // Tell Legalize whether the assembler supports DEBUG_LOC.
- const MCAsmInfo *TASM = TM.getMCAsmInfo();
- if (!TASM || !TASM->hasDotLocAndDotFile())
- setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
}
TargetLowering::~TargetLowering() {
delete &TLOF;
}
+/// canOpTrap - Returns true if the operation can trap for the value type.
+/// VT must be a legal type.
+bool TargetLowering::canOpTrap(unsigned Op, EVT VT) const {
+ assert(isTypeLegal(VT));
+ switch (Op) {
+ default:
+ return false;
+ case ISD::FDIV:
+ case ISD::FREM:
+ case ISD::SDIV:
+ case ISD::UDIV:
+ case ISD::SREM:
+ case ISD::UREM:
+ return true;
+ }
+}
+
+
static unsigned getVectorTypeBreakdownMVT(MVT VT, MVT &IntermediateVT,
unsigned &NumIntermediates,
EVT &RegisterVT,
unsigned NElts = VT.getVectorNumElements();
for (unsigned nVT = i+1; nVT <= MVT::LAST_VECTOR_VALUETYPE; ++nVT) {
EVT SVT = (MVT::SimpleValueType)nVT;
- if (isTypeLegal(SVT) && SVT.getVectorElementType() == EltVT &&
- SVT.getVectorNumElements() > NElts) {
+ if (isTypeSynthesizable(SVT) && SVT.getVectorElementType() == EltVT &&
+ SVT.getVectorNumElements() > NElts && NElts != 1) {
TransformToType[i] = SVT;
ValueTypeActions.setTypeAction(VT, Promote);
IsLegalWiderType = true;
return PointerTy.SimpleTy;
}
+MVT::SimpleValueType TargetLowering::getCmpLibcallReturnType() const {
+ return MVT::i32; // return the default value
+}
+
/// getVectorTypeBreakdown - Vector types are broken down into some number of
/// legal first class types. For example, MVT::v8f32 maps to 2 MVT::v4f32
/// with Altivec or SSE1, or 8 promoted MVT::f64 values with the X86 FP stack.
return 1;
}
-/// getWidenVectorType: given a vector type, returns the type to widen to
-/// (e.g., v7i8 to v8i8). If the vector type is legal, it returns itself.
-/// If there is no vector type that we want to widen to, returns MVT::Other
-/// When and where to widen is target dependent based on the cost of
-/// scalarizing vs using the wider vector type.
-EVT TargetLowering::getWidenVectorType(EVT VT) const {
- assert(VT.isVector());
- if (isTypeLegal(VT))
- return VT;
-
- // Default is not to widen until moved to LegalizeTypes
- return MVT::Other;
-}
-
/// getByValTypeAlignment - Return the desired alignment for ByVal aggregate
/// function arguments in the caller parameter area. This is the actual
/// alignment, not its logarithm.
return TD->getCallFrameTypeAlignment(Ty);
}
+/// getJumpTableEncoding - Return the entry encoding for a jump table in the
+/// current function. The returned value is a member of the
+/// MachineJumpTableInfo::JTEntryKind enum.
+unsigned TargetLowering::getJumpTableEncoding() const {
+ // In non-pic modes, just use the address of a block.
+ if (getTargetMachine().getRelocationModel() != Reloc::PIC_)
+ return MachineJumpTableInfo::EK_BlockAddress;
+
+ // In PIC mode, if the target supports a GPRel32 directive, use it.
+ if (getTargetMachine().getMCAsmInfo()->getGPRel32Directive() != 0)
+ return MachineJumpTableInfo::EK_GPRel32BlockAddress;
+
+ // Otherwise, use a label difference.
+ return MachineJumpTableInfo::EK_LabelDifference32;
+}
+
SDValue TargetLowering::getPICJumpTableRelocBase(SDValue Table,
SelectionDAG &DAG) const {
- if (usesGlobalOffsetTable())
+ // If our PIC model is GP relative, use the global offset table as the base.
+ if (getJumpTableEncoding() == MachineJumpTableInfo::EK_GPRel32BlockAddress)
return DAG.getGLOBAL_OFFSET_TABLE(getPointerTy());
return Table;
}
+/// getPICJumpTableRelocBaseExpr - This returns the relocation base for the
+/// given PIC jumptable, the same as getPICJumpTableRelocBase, but as an
+/// MCExpr.
+const MCExpr *
+TargetLowering::getPICJumpTableRelocBaseExpr(const MachineFunction *MF,
+ unsigned JTI,MCContext &Ctx) const{
+ // The normal PIC reloc base is the label at the start of the jump table.
+ return MCSymbolRefExpr::Create(MF->getJTISymbol(JTI, Ctx), Ctx);
+}
+
bool
TargetLowering::isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const {
// Assume that everything is safe in static mode.
TargetLoweringOpt &TLO,
unsigned Depth) const {
unsigned BitWidth = DemandedMask.getBitWidth();
- assert(Op.getValueSizeInBits() == BitWidth &&
+ assert(Op.getValueType().getScalarType().getSizeInBits() == BitWidth &&
"Mask size mismatches value type size!");
APInt NewMask = DemandedMask;
DebugLoc dl = Op.getDebugLoc();
if (TLO.ShrinkDemandedConstant(Op, ~KnownZero2 & NewMask))
return true;
// If the operation can be done in a smaller type, do so.
- if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
return true;
// Output known-1 bits are only known if set in both the LHS & RHS.
if (TLO.ShrinkDemandedConstant(Op, NewMask))
return true;
// If the operation can be done in a smaller type, do so.
- if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
return true;
// Output known-0 bits are only known if clear in both the LHS & RHS.
if ((KnownZero2 & NewMask) == NewMask)
return TLO.CombineTo(Op, Op.getOperand(1));
// If the operation can be done in a smaller type, do so.
- if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
return true;
// If all of the unknown bits are known to be zero on one side or the other
// variable. The low bit of the shift cannot be an input sign bit unless
// the shift amount is >= the size of the datatype, which is undefined.
if (DemandedMask == 1)
- return TLO.CombineTo(Op, TLO.DAG.getNode(ISD::SRL, dl, Op.getValueType(),
- Op.getOperand(0), Op.getOperand(1)));
+ return TLO.CombineTo(Op,
+ TLO.DAG.getNode(ISD::SRL, dl, Op.getValueType(),
+ Op.getOperand(0), Op.getOperand(1)));
if (ConstantSDNode *SA = dyn_cast<ConstantSDNode>(Op.getOperand(1))) {
EVT VT = Op.getValueType();
// demand the input sign bit.
APInt HighBits = APInt::getHighBitsSet(BitWidth, ShAmt);
if (HighBits.intersects(NewMask))
- InDemandedMask |= APInt::getSignBit(VT.getSizeInBits());
+ InDemandedMask |= APInt::getSignBit(VT.getScalarType().getSizeInBits());
if (SimplifyDemandedBits(Op.getOperand(0), InDemandedMask,
KnownZero, KnownOne, TLO, Depth+1))
// Sign extension. Compute the demanded bits in the result that are not
// present in the input.
- APInt NewBits = APInt::getHighBitsSet(BitWidth,
- BitWidth - EVT.getSizeInBits()) &
- NewMask;
+ APInt NewBits =
+ APInt::getHighBitsSet(BitWidth,
+ BitWidth - EVT.getScalarType().getSizeInBits()) &
+ NewMask;
// If none of the extended bits are demanded, eliminate the sextinreg.
if (NewBits == 0)
return TLO.CombineTo(Op, Op.getOperand(0));
- APInt InSignBit = APInt::getSignBit(EVT.getSizeInBits());
+ APInt InSignBit = APInt::getSignBit(EVT.getScalarType().getSizeInBits());
InSignBit.zext(BitWidth);
- APInt InputDemandedBits = APInt::getLowBitsSet(BitWidth,
- EVT.getSizeInBits()) &
- NewMask;
+ APInt InputDemandedBits =
+ APInt::getLowBitsSet(BitWidth,
+ EVT.getScalarType().getSizeInBits()) &
+ NewMask;
// Since the sign extended bits are demanded, we know that the sign
// bit is demanded.
break;
}
case ISD::ZERO_EXTEND: {
- unsigned OperandBitWidth = Op.getOperand(0).getValueSizeInBits();
+ unsigned OperandBitWidth =
+ Op.getOperand(0).getValueType().getScalarType().getSizeInBits();
APInt InMask = NewMask;
InMask.trunc(OperandBitWidth);
}
case ISD::SIGN_EXTEND: {
EVT InVT = Op.getOperand(0).getValueType();
- unsigned InBits = InVT.getSizeInBits();
+ unsigned InBits = InVT.getScalarType().getSizeInBits();
APInt InMask = APInt::getLowBitsSet(BitWidth, InBits);
APInt InSignBit = APInt::getBitsSet(BitWidth, InBits - 1, InBits);
APInt NewBits = ~InMask & NewMask;
break;
}
case ISD::ANY_EXTEND: {
- unsigned OperandBitWidth = Op.getOperand(0).getValueSizeInBits();
+ unsigned OperandBitWidth =
+ Op.getOperand(0).getValueType().getScalarType().getSizeInBits();
APInt InMask = NewMask;
InMask.trunc(OperandBitWidth);
if (SimplifyDemandedBits(Op.getOperand(0), InMask,
case ISD::TRUNCATE: {
// Simplify the input, using demanded bit information, and compute the known
// zero/one bits live out.
+ unsigned OperandBitWidth =
+ Op.getOperand(0).getValueType().getScalarType().getSizeInBits();
APInt TruncMask = NewMask;
- TruncMask.zext(Op.getOperand(0).getValueSizeInBits());
+ TruncMask.zext(OperandBitWidth);
if (SimplifyDemandedBits(Op.getOperand(0), TruncMask,
KnownZero, KnownOne, TLO, Depth+1))
return true;
// on the known demanded bits.
if (Op.getOperand(0).getNode()->hasOneUse()) {
SDValue In = Op.getOperand(0);
- unsigned InBitWidth = In.getValueSizeInBits();
switch (In.getOpcode()) {
default: break;
case ISD::SRL:
// Shrink SRL by a constant if none of the high bits shifted in are
// demanded.
- if (ConstantSDNode *ShAmt = dyn_cast<ConstantSDNode>(In.getOperand(1))){
- APInt HighBits = APInt::getHighBitsSet(InBitWidth,
- InBitWidth - BitWidth);
- HighBits = HighBits.lshr(ShAmt->getZExtValue());
- HighBits.trunc(BitWidth);
-
- if (ShAmt->getZExtValue() < BitWidth && !(HighBits & NewMask)) {
- // None of the shifted in bits are needed. Add a truncate of the
- // shift input, then shift it.
- SDValue NewTrunc = TLO.DAG.getNode(ISD::TRUNCATE, dl,
- Op.getValueType(),
- In.getOperand(0));
- return TLO.CombineTo(Op, TLO.DAG.getNode(ISD::SRL, dl,
- Op.getValueType(),
- NewTrunc,
- In.getOperand(1)));
- }
+ if (TLO.LegalTypes() &&
+ !isTypeDesirableForOp(ISD::SRL, Op.getValueType()))
+ // Do not turn (vt1 truncate (vt2 srl)) into (vt1 srl) if vt1 is
+ // undesirable.
+ break;
+ ConstantSDNode *ShAmt = dyn_cast<ConstantSDNode>(In.getOperand(1));
+ if (!ShAmt)
+ break;
+ APInt HighBits = APInt::getHighBitsSet(OperandBitWidth,
+ OperandBitWidth - BitWidth);
+ HighBits = HighBits.lshr(ShAmt->getZExtValue());
+ HighBits.trunc(BitWidth);
+
+ if (ShAmt->getZExtValue() < BitWidth && !(HighBits & NewMask)) {
+ // None of the shifted in bits are needed. Add a truncate of the
+ // shift input, then shift it.
+ SDValue NewTrunc = TLO.DAG.getNode(ISD::TRUNCATE, dl,
+ Op.getValueType(),
+ In.getOperand(0));
+ return TLO.CombineTo(Op, TLO.DAG.getNode(ISD::SRL, dl,
+ Op.getValueType(),
+ NewTrunc,
+ In.getOperand(1)));
}
break;
}
KnownOne2, TLO, Depth+1))
return true;
// See if the operation should be performed at a smaller bit width.
- if (TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
return true;
}
// FALL THROUGH
// Fall back to ComputeMaskedBits to catch other known cases.
EVT OpVT = Val.getValueType();
- unsigned BitWidth = OpVT.getSizeInBits();
+ unsigned BitWidth = OpVT.getScalarType().getSizeInBits();
APInt Mask = APInt::getAllOnesValue(BitWidth);
APInt KnownZero, KnownOne;
DAG.ComputeMaskedBits(Val, Mask, KnownZero, KnownOne);
if (N0.getOpcode() == ISD::SRL && (C1 == 0 || C1 == 1) &&
N0.getOperand(0).getOpcode() == ISD::CTLZ &&
N0.getOperand(1).getOpcode() == ISD::Constant) {
- unsigned ShAmt = cast<ConstantSDNode>(N0.getOperand(1))->getZExtValue();
+ const APInt &ShAmt
+ = cast<ConstantSDNode>(N0.getOperand(1))->getAPIntValue();
if ((Cond == ISD::SETEQ || Cond == ISD::SETNE) &&
ShAmt == Log2_32(N0.getValueType().getSizeInBits())) {
if ((C1 == 0) == (Cond == ISD::SETEQ)) {
N0.getOperand(0).getNode()->hasOneUse() &&
isa<ConstantSDNode>(N0.getOperand(1))) {
LoadSDNode *Lod = cast<LoadSDNode>(N0.getOperand(0));
- uint64_t bestMask = 0;
+ APInt bestMask;
unsigned bestWidth = 0, bestOffset = 0;
- if (!Lod->isVolatile() && Lod->isUnindexed() &&
- // FIXME: This uses getZExtValue() below so it only works on i64 and
- // below.
- N0.getValueType().getSizeInBits() <= 64) {
+ if (!Lod->isVolatile() && Lod->isUnindexed()) {
unsigned origWidth = N0.getValueType().getSizeInBits();
+ unsigned maskWidth = origWidth;
// We can narrow (e.g.) 16-bit extending loads on 32-bit target to
// 8 bits, but have to be careful...
if (Lod->getExtensionType() != ISD::NON_EXTLOAD)
origWidth = Lod->getMemoryVT().getSizeInBits();
- uint64_t Mask =cast<ConstantSDNode>(N0.getOperand(1))->getZExtValue();
+ const APInt &Mask =
+ cast<ConstantSDNode>(N0.getOperand(1))->getAPIntValue();
for (unsigned width = origWidth / 2; width>=8; width /= 2) {
- uint64_t newMask = (1ULL << width) - 1;
+ APInt newMask = APInt::getLowBitsSet(maskWidth, width);
for (unsigned offset=0; offset<origWidth/width; offset++) {
if ((newMask & Mask) == Mask) {
if (!TD->isLittleEndian())
bestOffset = (origWidth/width - offset - 1) * (width/8);
else
bestOffset = (uint64_t)offset * (width/8);
- bestMask = Mask >> (offset * (width/8) * 8);
+ bestMask = Mask.lshr(offset * (width/8) * 8);
bestWidth = width;
break;
}
SDValue NewLoad = DAG.getLoad(newVT, dl, Lod->getChain(), Ptr,
Lod->getSrcValue(),
Lod->getSrcValueOffset() + bestOffset,
- false, NewAlign);
+ false, false, NewAlign);
return DAG.getSetCC(dl, VT,
DAG.getNode(ISD::AND, dl, newVT, NewLoad,
- DAG.getConstant(bestMask, newVT)),
+ DAG.getConstant(bestMask.trunc(bestWidth),
+ newVT)),
DAG.getConstant(0LL, newVT), Cond);
}
}
break; // todo, be more careful with signed comparisons
}
} else if (N0.getOpcode() == ISD::SIGN_EXTEND_INREG &&
- (Cond == ISD::SETEQ || Cond == ISD::SETNE)) {
+ (Cond == ISD::SETEQ || Cond == ISD::SETNE)) {
EVT ExtSrcTy = cast<VTSDNode>(N0.getOperand(1))->getVT();
unsigned ExtSrcTyBits = ExtSrcTy.getSizeInBits();
EVT ExtDstTy = N0.getValueType();
Cond);
} else if ((N1C->isNullValue() || N1C->getAPIntValue() == 1) &&
(Cond == ISD::SETEQ || Cond == ISD::SETNE)) {
-
// SETCC (SETCC), [0|1], [EQ|NE] -> SETCC
- if (N0.getOpcode() == ISD::SETCC) {
- bool TrueWhenTrue = (Cond == ISD::SETEQ) ^ (N1C->getZExtValue() != 1);
+ if (N0.getOpcode() == ISD::SETCC &&
+ isTypeLegal(VT) && VT.bitsLE(N0.getValueType())) {
+ bool TrueWhenTrue = (Cond == ISD::SETEQ) ^ (N1C->getAPIntValue() != 1);
if (TrueWhenTrue)
- return N0;
-
+ return DAG.getNode(ISD::TRUNCATE, dl, VT, N0);
// Invert the condition.
ISD::CondCode CC = cast<CondCodeSDNode>(N0.getOperand(2))->get();
CC = ISD::getSetCCInverse(CC,
N0.getOperand(0).getValueType().isInteger());
return DAG.getSetCC(dl, VT, N0.getOperand(0), N0.getOperand(1), CC);
}
-
+
if ((N0.getOpcode() == ISD::XOR ||
- (N0.getOpcode() == ISD::AND &&
+ (N0.getOpcode() == ISD::AND &&
N0.getOperand(0).getOpcode() == ISD::XOR &&
N0.getOperand(1) == N0.getOperand(0).getOperand(1))) &&
isa<ConstantSDNode>(N0.getOperand(1)) &&
N0.getOperand(0).getOperand(0),
N0.getOperand(1));
}
+
return DAG.getSetCC(dl, VT, Val, N1,
Cond == ISD::SETEQ ? ISD::SETNE : ISD::SETEQ);
}
+ } else if (N1C->getAPIntValue() == 1 &&
+ (VT == MVT::i1 ||
+ getBooleanContents() == ZeroOrOneBooleanContent)) {
+ SDValue Op0 = N0;
+ if (Op0.getOpcode() == ISD::TRUNCATE)
+ Op0 = Op0.getOperand(0);
+
+ if ((Op0.getOpcode() == ISD::XOR) &&
+ Op0.getOperand(0).getOpcode() == ISD::SETCC &&
+ Op0.getOperand(1).getOpcode() == ISD::SETCC) {
+ // (xor (setcc), (setcc)) == / != 1 -> (setcc) != / == (setcc)
+ Cond = (Cond == ISD::SETEQ) ? ISD::SETNE : ISD::SETEQ;
+ return DAG.getSetCC(dl, VT, Op0.getOperand(0), Op0.getOperand(1),
+ Cond);
+ } else if (Op0.getOpcode() == ISD::AND &&
+ isa<ConstantSDNode>(Op0.getOperand(1)) &&
+ cast<ConstantSDNode>(Op0.getOperand(1))->getAPIntValue() == 1) {
+ // If this is (X&1) == / != 1, normalize it to (X&1) != / == 0.
+ if (Op0.getValueType() != VT)
+ Op0 = DAG.getNode(ISD::AND, dl, VT,
+ DAG.getNode(ISD::TRUNCATE, dl, VT, Op0.getOperand(0)),
+ DAG.getConstant(1, VT));
+ return DAG.getSetCC(dl, VT, Op0,
+ DAG.getConstant(0, Op0.getValueType()),
+ Cond == ISD::SETEQ ? ISD::SETNE : ISD::SETEQ);
+ }
}
}
// Fold bit comparisons when we can.
if ((Cond == ISD::SETEQ || Cond == ISD::SETNE) &&
- VT == N0.getValueType() && N0.getOpcode() == ISD::AND)
+ (VT == N0.getValueType() ||
+ (isTypeLegal(VT) && VT.bitsLE(N0.getValueType()))) &&
+ N0.getOpcode() == ISD::AND)
if (ConstantSDNode *AndRHS =
dyn_cast<ConstantSDNode>(N0.getOperand(1))) {
EVT ShiftTy = DCI.isBeforeLegalize() ?
getPointerTy() : getShiftAmountTy();
if (Cond == ISD::SETNE && C1 == 0) {// (X & 8) != 0 --> (X & 8) >> 3
// Perform the xform if the AND RHS is a single bit.
- if (isPowerOf2_64(AndRHS->getZExtValue())) {
- return DAG.getNode(ISD::SRL, dl, VT, N0,
- DAG.getConstant(Log2_64(AndRHS->getZExtValue()),
- ShiftTy));
+ if (AndRHS->getAPIntValue().isPowerOf2()) {
+ return DAG.getNode(ISD::TRUNCATE, dl, VT,
+ DAG.getNode(ISD::SRL, dl, N0.getValueType(), N0,
+ DAG.getConstant(AndRHS->getAPIntValue().logBase2(), ShiftTy)));
}
- } else if (Cond == ISD::SETEQ && C1 == AndRHS->getZExtValue()) {
+ } else if (Cond == ISD::SETEQ && C1 == AndRHS->getAPIntValue()) {
// (X & 8) == 8 --> (X & 8) >> 3
// Perform the xform if C1 is a single bit.
if (C1.isPowerOf2()) {
- return DAG.getNode(ISD::SRL, dl, VT, N0,
- DAG.getConstant(C1.logBase2(), ShiftTy));
+ return DAG.getNode(ISD::TRUNCATE, dl, VT,
+ DAG.getNode(ISD::SRL, dl, N0.getValueType(), N0,
+ DAG.getConstant(C1.logBase2(), ShiftTy)));
}
}
}
/// isGAPlusOffset - Returns true (and the GlobalValue and the offset) if the
/// node is a GlobalAddress + offset.
-bool TargetLowering::isGAPlusOffset(SDNode *N, GlobalValue* &GA,
+bool TargetLowering::isGAPlusOffset(SDNode *N, const GlobalValue* &GA,
int64_t &Offset) const {
if (isa<GlobalAddressSDNode>(N)) {
GlobalAddressSDNode *GASD = cast<GlobalAddressSDNode>(N);
}
-/// isConsecutiveLoad - Return true if LD is loading 'Bytes' bytes from a
-/// location that is 'Dist' units away from the location that the 'Base' load
-/// is loading from.
-bool TargetLowering::isConsecutiveLoad(LoadSDNode *LD, LoadSDNode *Base,
- unsigned Bytes, int Dist,
- const MachineFrameInfo *MFI) const {
- if (LD->getChain() != Base->getChain())
- return false;
- EVT VT = LD->getValueType(0);
- if (VT.getSizeInBits() / 8 != Bytes)
- return false;
-
- SDValue Loc = LD->getOperand(1);
- SDValue BaseLoc = Base->getOperand(1);
- if (Loc.getOpcode() == ISD::FrameIndex) {
- if (BaseLoc.getOpcode() != ISD::FrameIndex)
- return false;
- int FI = cast<FrameIndexSDNode>(Loc)->getIndex();
- int BFI = cast<FrameIndexSDNode>(BaseLoc)->getIndex();
- int FS = MFI->getObjectSize(FI);
- int BFS = MFI->getObjectSize(BFI);
- if (FS != BFS || FS != (int)Bytes) return false;
- return MFI->getObjectOffset(FI) == (MFI->getObjectOffset(BFI) + Dist*Bytes);
- }
- if (Loc.getOpcode() == ISD::ADD && Loc.getOperand(0) == BaseLoc) {
- ConstantSDNode *V = dyn_cast<ConstantSDNode>(Loc.getOperand(1));
- if (V && (V->getSExtValue() == Dist*Bytes))
- return true;
- }
-
- GlobalValue *GV1 = NULL;
- GlobalValue *GV2 = NULL;
- int64_t Offset1 = 0;
- int64_t Offset2 = 0;
- bool isGA1 = isGAPlusOffset(Loc.getNode(), GV1, Offset1);
- bool isGA2 = isGAPlusOffset(BaseLoc.getNode(), GV2, Offset2);
- if (isGA1 && isGA2 && GV1 == GV2)
- return Offset1 == (Offset2 + Dist*Bytes);
- return false;
-}
-
-
SDValue TargetLowering::
PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const {
// Default implementation: no optimization.
E = RI->regclass_end(); RCI != E; ++RCI) {
const TargetRegisterClass *RC = *RCI;
- // If none of the the value types for this register class are valid, we
+ // If none of the value types for this register class are valid, we
// can't use it. For example, 64-bit reg classes on 32-bit targets.
bool isLegal = false;
for (TargetRegisterClass::vt_iterator I = RC->vt_begin(), E = RC->vt_end();