#include "llvm/Target/TargetLoweringObjectFile.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Target/TargetSubtarget.h"
#include "llvm/GlobalVariable.h"
#include "llvm/DerivedTypes.h"
#include "llvm/CodeGen/MachineFrameInfo.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";
Names[RTLIB::MEMMOVE] = "memmove";
Names[RTLIB::MEMSET] = "memset";
Names[RTLIB::UNWIND_RESUME] = "_Unwind_Resume";
+ Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_1] = "__sync_val_compare_and_swap_1";
+ Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2] = "__sync_val_compare_and_swap_2";
+ Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4] = "__sync_val_compare_and_swap_4";
+ Names[RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8] = "__sync_val_compare_and_swap_8";
+ Names[RTLIB::SYNC_LOCK_TEST_AND_SET_1] = "__sync_lock_test_and_set_1";
+ Names[RTLIB::SYNC_LOCK_TEST_AND_SET_2] = "__sync_lock_test_and_set_2";
+ Names[RTLIB::SYNC_LOCK_TEST_AND_SET_4] = "__sync_lock_test_and_set_4";
+ Names[RTLIB::SYNC_LOCK_TEST_AND_SET_8] = "__sync_lock_test_and_set_8";
+ Names[RTLIB::SYNC_FETCH_AND_ADD_1] = "__sync_fetch_and_add_1";
+ Names[RTLIB::SYNC_FETCH_AND_ADD_2] = "__sync_fetch_and_add_2";
+ Names[RTLIB::SYNC_FETCH_AND_ADD_4] = "__sync_fetch_and_add_4";
+ Names[RTLIB::SYNC_FETCH_AND_ADD_8] = "__sync_fetch_and_add_8";
+ Names[RTLIB::SYNC_FETCH_AND_SUB_1] = "__sync_fetch_and_sub_1";
+ Names[RTLIB::SYNC_FETCH_AND_SUB_2] = "__sync_fetch_and_sub_2";
+ Names[RTLIB::SYNC_FETCH_AND_SUB_4] = "__sync_fetch_and_sub_4";
+ Names[RTLIB::SYNC_FETCH_AND_SUB_8] = "__sync_fetch_and_sub_8";
+ Names[RTLIB::SYNC_FETCH_AND_AND_1] = "__sync_fetch_and_and_1";
+ Names[RTLIB::SYNC_FETCH_AND_AND_2] = "__sync_fetch_and_and_2";
+ Names[RTLIB::SYNC_FETCH_AND_AND_4] = "__sync_fetch_and_and_4";
+ Names[RTLIB::SYNC_FETCH_AND_AND_8] = "__sync_fetch_and_and_8";
+ Names[RTLIB::SYNC_FETCH_AND_OR_1] = "__sync_fetch_and_or_1";
+ Names[RTLIB::SYNC_FETCH_AND_OR_2] = "__sync_fetch_and_or_2";
+ Names[RTLIB::SYNC_FETCH_AND_OR_4] = "__sync_fetch_and_or_4";
+ Names[RTLIB::SYNC_FETCH_AND_OR_8] = "__sync_fetch_and_or_8";
+ Names[RTLIB::SYNC_FETCH_AND_XOR_1] = "__sync_fetch_and_xor_1";
+ Names[RTLIB::SYNC_FETCH_AND_XOR_2] = "__sync_fetch_and_xor_2";
+ Names[RTLIB::SYNC_FETCH_AND_XOR_4] = "__sync_fetch_and-xor_4";
+ Names[RTLIB::SYNC_FETCH_AND_XOR_8] = "__sync_fetch_and_xor_8";
+ Names[RTLIB::SYNC_FETCH_AND_NAND_1] = "__sync_fetch_and_nand_1";
+ Names[RTLIB::SYNC_FETCH_AND_NAND_2] = "__sync_fetch_and_nand_2";
+ Names[RTLIB::SYNC_FETCH_AND_NAND_4] = "__sync_fetch_and_nand_4";
+ Names[RTLIB::SYNC_FETCH_AND_NAND_8] = "__sync_fetch_and_nand_8";
}
/// InitLibcallCallingConvs - Set default libcall CallingConvs.
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.
ExceptionPointerRegister = 0;
ExceptionSelectorRegister = 0;
BooleanContents = UndefinedBooleanContent;
- SchedPreferenceInfo = SchedulingForLatency;
+ SchedPreferenceInfo = Sched::Latency;
JumpBufSize = 0;
JumpBufAlignment = 0;
- IfCvtBlockSizeLimit = 2;
- IfCvtDupBlockSizeLimit = 0;
PrefLoopAlignment = 0;
+ ShouldFoldAtomicFences = false;
InitLibcallNames(LibcallRoutineNames);
InitCmpLibcallCCs(CmpLibcallCCs);
static unsigned getVectorTypeBreakdownMVT(MVT VT, MVT &IntermediateVT,
- unsigned &NumIntermediates,
- EVT &RegisterVT,
- TargetLowering* TLI) {
+ unsigned &NumIntermediates,
+ EVT &RegisterVT,
+ TargetLowering *TLI) {
// Figure out the right, legal destination reg to copy into.
unsigned NumElts = VT.getVectorNumElements();
MVT EltTy = VT.getVectorElementType();
EVT DestVT = TLI->getRegisterType(NewVT);
RegisterVT = DestVT;
- if (EVT(DestVT).bitsLT(NewVT)) {
- // Value is expanded, e.g. i64 -> i16.
+ if (EVT(DestVT).bitsLT(NewVT)) // Value is expanded, e.g. i64 -> i16.
return NumVectorRegs*(NewVT.getSizeInBits()/DestVT.getSizeInBits());
- } else {
- // Otherwise, promotion or legal types use the same number of registers as
- // the vector decimated to the appropriate level.
- return NumVectorRegs;
- }
- return 1;
+ // Otherwise, promotion or legal types use the same number of registers as
+ // the vector decimated to the appropriate level.
+ return NumVectorRegs;
}
/// computeRegisterProperties - Once all of the register classes are added,
for (unsigned i = MVT::FIRST_VECTOR_VALUETYPE;
i <= (unsigned)MVT::LAST_VECTOR_VALUETYPE; ++i) {
MVT VT = (MVT::SimpleValueType)i;
- if (!isTypeLegal(VT)) {
- MVT IntermediateVT;
- EVT RegisterVT;
- unsigned NumIntermediates;
- NumRegistersForVT[i] =
- getVectorTypeBreakdownMVT(VT, IntermediateVT, NumIntermediates,
- RegisterVT, this);
- RegisterTypeForVT[i] = RegisterVT;
-
- // Determine if there is a legal wider type.
- bool IsLegalWiderType = false;
- EVT EltVT = VT.getVectorElementType();
- 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 && NElts != 1) {
- TransformToType[i] = SVT;
- ValueTypeActions.setTypeAction(VT, Promote);
- IsLegalWiderType = true;
- break;
- }
+ if (isTypeLegal(VT)) continue;
+
+ MVT IntermediateVT;
+ EVT RegisterVT;
+ unsigned NumIntermediates;
+ NumRegistersForVT[i] =
+ getVectorTypeBreakdownMVT(VT, IntermediateVT, NumIntermediates,
+ RegisterVT, this);
+ RegisterTypeForVT[i] = RegisterVT;
+
+ // Determine if there is a legal wider type.
+ bool IsLegalWiderType = false;
+ EVT EltVT = VT.getVectorElementType();
+ unsigned NElts = VT.getVectorNumElements();
+ for (unsigned nVT = i+1; nVT <= MVT::LAST_VECTOR_VALUETYPE; ++nVT) {
+ EVT SVT = (MVT::SimpleValueType)nVT;
+ if (isTypeSynthesizable(SVT) && SVT.getVectorElementType() == EltVT &&
+ SVT.getVectorNumElements() > NElts && NElts != 1) {
+ TransformToType[i] = SVT;
+ ValueTypeActions.setTypeAction(VT, Promote);
+ IsLegalWiderType = true;
+ break;
}
- if (!IsLegalWiderType) {
- EVT NVT = VT.getPow2VectorType();
- if (NVT == VT) {
- // Type is already a power of 2. The default action is to split.
- TransformToType[i] = MVT::Other;
- ValueTypeActions.setTypeAction(VT, Expand);
- } else {
- TransformToType[i] = NVT;
- ValueTypeActions.setTypeAction(VT, Promote);
- }
+ }
+ if (!IsLegalWiderType) {
+ EVT NVT = VT.getPow2VectorType();
+ if (NVT == VT) {
+ // Type is already a power of 2. The default action is to split.
+ TransformToType[i] = MVT::Other;
+ ValueTypeActions.setTypeAction(VT, Expand);
+ } else {
+ TransformToType[i] = NVT;
+ ValueTypeActions.setTypeAction(VT, Promote);
}
}
}
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.
if (TLO.ShrinkDemandedConstant(Op, ~KnownZero2 & NewMask))
return true;
// If the operation can be done in a smaller type, do so.
- if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (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.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (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.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (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();
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(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)));
- }
+ 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;
}
break;
}
case ISD::AssertZext: {
- EVT VT = cast<VTSDNode>(Op.getOperand(1))->getVT();
- APInt InMask = APInt::getLowBitsSet(BitWidth,
- VT.getSizeInBits());
- if (SimplifyDemandedBits(Op.getOperand(0), InMask & NewMask,
+ // Demand all the bits of the input that are demanded in the output.
+ // The low bits are obvious; the high bits are demanded because we're
+ // asserting that they're zero here.
+ if (SimplifyDemandedBits(Op.getOperand(0), NewMask,
KnownZero, KnownOne, TLO, Depth+1))
return true;
assert((KnownZero & KnownOne) == 0 && "Bits known to be one AND zero?");
+
+ EVT VT = cast<VTSDNode>(Op.getOperand(1))->getVT();
+ APInt InMask = APInt::getLowBitsSet(BitWidth,
+ VT.getSizeInBits());
KnownZero |= ~InMask & NewMask;
break;
}
KnownOne2, TLO, Depth+1))
return true;
// See if the operation should be performed at a smaller bit width.
- if (TLO.ShrinkOps && TLO.ShrinkDemandedOp(Op, BitWidth, NewMask, dl))
+ if (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);
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)
+ if (Op0.getValueType().bitsGT(VT))
Op0 = DAG.getNode(ISD::AND, dl, VT,
DAG.getNode(ISD::TRUNCATE, dl, VT, Op0.getOperand(0)),
DAG.getConstant(1, VT));
+ else if (Op0.getValueType().bitsLT(VT))
+ Op0 = DAG.getNode(ISD::AND, dl, VT,
+ DAG.getNode(ISD::ANY_EXTEND, 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);
/// 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);
/// vector. If it is invalid, don't add anything to Ops.
void TargetLowering::LowerAsmOperandForConstraint(SDValue Op,
char ConstraintLetter,
- bool hasMemory,
std::vector<SDValue> &Ops,
SelectionDAG &DAG) const {
switch (ConstraintLetter) {
if (ConstraintLetter != 'n') {
int64_t Offs = GA->getOffset();
if (C) Offs += C->getZExtValue();
- Ops.push_back(DAG.getTargetGlobalAddress(GA->getGlobal(),
+ Ops.push_back(DAG.getTargetGlobalAddress(GA->getGlobal(),
+ C->getDebugLoc(),
Op.getValueType(), Offs));
return;
}
getRegForInlineAsmConstraint(const std::string &Constraint,
EVT VT) const {
if (Constraint[0] != '{')
- return std::pair<unsigned, const TargetRegisterClass*>(0, 0);
+ return std::make_pair(0u, static_cast<TargetRegisterClass*>(0));
assert(*(Constraint.end()-1) == '}' && "Not a brace enclosed constraint?");
// Remove the braces from around the name.
}
}
- return std::pair<unsigned, const TargetRegisterClass*>(0, 0);
+ return std::make_pair(0u, static_cast<const TargetRegisterClass*>(0));
}
//===----------------------------------------------------------------------===//
/// 'm' over 'r', for example.
///
static void ChooseConstraint(TargetLowering::AsmOperandInfo &OpInfo,
- bool hasMemory, const TargetLowering &TLI,
+ const TargetLowering &TLI,
SDValue Op, SelectionDAG *DAG) {
assert(OpInfo.Codes.size() > 1 && "Doesn't have multiple constraint options");
unsigned BestIdx = 0;
TargetLowering::ConstraintType BestType = TargetLowering::C_Unknown;
int BestGenerality = -1;
-
+
// Loop over the options, keeping track of the most general one.
for (unsigned i = 0, e = OpInfo.Codes.size(); i != e; ++i) {
TargetLowering::ConstraintType CType =
TLI.getConstraintType(OpInfo.Codes[i]);
-
+
// If this is an 'other' constraint, see if the operand is valid for it.
// For example, on X86 we might have an 'rI' constraint. If the operand
// is an integer in the range [0..31] we want to use I (saving a load
assert(OpInfo.Codes[i].size() == 1 &&
"Unhandled multi-letter 'other' constraint");
std::vector<SDValue> ResultOps;
- TLI.LowerAsmOperandForConstraint(Op, OpInfo.Codes[i][0], hasMemory,
+ TLI.LowerAsmOperandForConstraint(Op, OpInfo.Codes[i][0],
ResultOps, *DAG);
if (!ResultOps.empty()) {
BestType = CType;
}
}
+ // Things with matching constraints can only be registers, per gcc
+ // documentation. This mainly affects "g" constraints.
+ if (CType == TargetLowering::C_Memory && OpInfo.hasMatchingInput())
+ continue;
+
// This constraint letter is more general than the previous one, use it.
int Generality = getConstraintGenerality(CType);
if (Generality > BestGenerality) {
/// OpInfo.ConstraintCode and OpInfo.ConstraintType.
void TargetLowering::ComputeConstraintToUse(AsmOperandInfo &OpInfo,
SDValue Op,
- bool hasMemory,
SelectionDAG *DAG) const {
assert(!OpInfo.Codes.empty() && "Must have at least one constraint");
OpInfo.ConstraintCode = OpInfo.Codes[0];
OpInfo.ConstraintType = getConstraintType(OpInfo.ConstraintCode);
} else {
- ChooseConstraint(OpInfo, hasMemory, *this, Op, DAG);
+ ChooseConstraint(OpInfo, *this, Op, DAG);
}
// 'X' matches anything.
projects / oota-llvm.git / blobdiff