bool SimplifyAddress(Address &Addr, MVT VT, int64_t ScaleFactor,
bool UseUnscaled);
void AddLoadStoreOperands(Address &Addr, const MachineInstrBuilder &MIB,
- unsigned Flags, bool UseUnscaled);
+ unsigned Flags, MachineMemOperand *MMO,
+ bool UseUnscaled);
bool IsMemCpySmall(uint64_t Len, unsigned Alignment);
bool TryEmitSmallMemCpy(Address Dest, Address Src, uint64_t Len,
unsigned Alignment);
// Emit functions.
bool EmitCmp(Value *Src1Value, Value *Src2Value, bool isZExt);
bool EmitLoad(MVT VT, unsigned &ResultReg, Address Addr,
- bool UseUnscaled = false);
+ MachineMemOperand *MMO = nullptr, bool UseUnscaled = false);
bool EmitStore(MVT VT, unsigned SrcReg, Address Addr,
- bool UseUnscaled = false);
+ MachineMemOperand *MMO = nullptr, bool UseUnscaled = false);
unsigned EmitIntExt(MVT SrcVT, unsigned SrcReg, MVT DestVT, bool isZExt);
unsigned Emiti1Ext(unsigned SrcReg, MVT DestVT, bool isZExt);
unsigned Emit_MUL_rr(MVT RetVT, unsigned Op0, bool Op0IsKill,
unsigned Emit_LSR_ri(MVT RetVT, unsigned Op0, bool Op0IsKill, uint64_t Imm);
unsigned Emit_ASR_ri(MVT RetVT, unsigned Op0, bool Op0IsKill, uint64_t Imm);
+ unsigned AArch64MaterializeInt(const ConstantInt *CI, MVT VT);
unsigned AArch64MaterializeFP(const ConstantFP *CFP, MVT VT);
unsigned AArch64MaterializeGV(const GlobalValue *GV);
return 0;
}
+unsigned AArch64FastISel::AArch64MaterializeInt(const ConstantInt *CI, MVT VT) {
+ if (VT > MVT::i64)
+ return 0;
+ return FastEmit_i(VT, VT, ISD::Constant, CI->getZExtValue());
+}
+
unsigned AArch64FastISel::AArch64MaterializeFP(const ConstantFP *CFP, MVT VT) {
if (VT != MVT::f32 && VT != MVT::f64)
return 0;
const APFloat Val = CFP->getValueAPF();
- bool is64bit = (VT == MVT::f64);
+ bool Is64Bit = (VT == MVT::f64);
// This checks to see if we can use FMOV instructions to materialize
// a constant, otherwise we have to materialize via the constant pool.
if (TLI.isFPImmLegal(Val, VT)) {
- int Imm;
- unsigned Opc;
- if (is64bit) {
- Imm = AArch64_AM::getFP64Imm(Val);
- Opc = AArch64::FMOVDi;
- } else {
- Imm = AArch64_AM::getFP32Imm(Val);
- Opc = AArch64::FMOVSi;
- }
unsigned ResultReg = createResultReg(TLI.getRegClassFor(VT));
+ // Positive zero (+0.0) has to be materialized with a fmov from the zero
+ // register, because the immediate version of fmov cannot encode zero.
+ if (Val.isPosZero()) {
+ unsigned ZReg = Is64Bit ? AArch64::XZR : AArch64::WZR;
+ unsigned Opc = Is64Bit ? AArch64::FMOVDr : AArch64::FMOVSr;
+ BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ResultReg)
+ .addReg(ZReg, getKillRegState(true));
+ return ResultReg;
+ }
+ int Imm = Is64Bit ? AArch64_AM::getFP64Imm(Val)
+ : AArch64_AM::getFP32Imm(Val);
+ unsigned Opc = Is64Bit ? AArch64::FMOVDi : AArch64::FMOVSi;
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ResultReg)
- .addImm(Imm);
+ .addImm(Imm);
return ResultReg;
}
if (Align == 0)
Align = DL.getTypeAllocSize(CFP->getType());
- unsigned Idx = MCP.getConstantPoolIndex(cast<Constant>(CFP), Align);
+ unsigned CPI = MCP.getConstantPoolIndex(cast<Constant>(CFP), Align);
unsigned ADRPReg = createResultReg(&AArch64::GPR64commonRegClass);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(AArch64::ADRP),
- ADRPReg).addConstantPoolIndex(Idx, 0, AArch64II::MO_PAGE);
+ ADRPReg)
+ .addConstantPoolIndex(CPI, 0, AArch64II::MO_PAGE);
- unsigned Opc = is64bit ? AArch64::LDRDui : AArch64::LDRSui;
+ unsigned Opc = Is64Bit ? AArch64::LDRDui : AArch64::LDRSui;
unsigned ResultReg = createResultReg(TLI.getRegClassFor(VT));
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ResultReg)
- .addReg(ADRPReg)
- .addConstantPoolIndex(Idx, 0, AArch64II::MO_PAGEOFF | AArch64II::MO_NC);
+ .addReg(ADRPReg)
+ .addConstantPoolIndex(CPI, 0, AArch64II::MO_PAGEOFF | AArch64II::MO_NC);
return ResultReg;
}
// ADRP + LDRX
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(AArch64::ADRP),
ADRPReg)
- .addGlobalAddress(GV, 0, AArch64II::MO_GOT | AArch64II::MO_PAGE);
+ .addGlobalAddress(GV, 0, AArch64II::MO_GOT | AArch64II::MO_PAGE);
ResultReg = createResultReg(&AArch64::GPR64RegClass);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(AArch64::LDRXui),
ResultReg)
- .addReg(ADRPReg)
- .addGlobalAddress(GV, 0, AArch64II::MO_GOT | AArch64II::MO_PAGEOFF |
- AArch64II::MO_NC);
+ .addReg(ADRPReg)
+ .addGlobalAddress(GV, 0, AArch64II::MO_GOT | AArch64II::MO_PAGEOFF |
+ AArch64II::MO_NC);
} else {
// ADRP + ADDX
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(AArch64::ADRP),
- ADRPReg).addGlobalAddress(GV, 0, AArch64II::MO_PAGE);
+ ADRPReg)
+ .addGlobalAddress(GV, 0, AArch64II::MO_PAGE);
ResultReg = createResultReg(&AArch64::GPR64spRegClass);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(AArch64::ADDXri),
ResultReg)
- .addReg(ADRPReg)
- .addGlobalAddress(GV, 0, AArch64II::MO_PAGEOFF | AArch64II::MO_NC)
- .addImm(0);
+ .addReg(ADRPReg)
+ .addGlobalAddress(GV, 0, AArch64II::MO_PAGEOFF | AArch64II::MO_NC)
+ .addImm(0);
}
return ResultReg;
}
return 0;
MVT VT = CEVT.getSimpleVT();
- // FIXME: Handle ConstantInt.
- if (const ConstantFP *CFP = dyn_cast<ConstantFP>(C))
+ if (const auto *CI = dyn_cast<ConstantInt>(C))
+ return AArch64MaterializeInt(CI, VT);
+ else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(C))
return AArch64MaterializeFP(CFP, VT);
else if (const GlobalValue *GV = dyn_cast<GlobalValue>(C))
return AArch64MaterializeGV(GV);
void AArch64FastISel::AddLoadStoreOperands(Address &Addr,
const MachineInstrBuilder &MIB,
- unsigned Flags, bool UseUnscaled) {
+ unsigned Flags,
+ MachineMemOperand *MMO,
+ bool UseUnscaled) {
int64_t Offset = Addr.getOffset();
// Frame base works a bit differently. Handle it separately.
if (Addr.getKind() == Address::FrameIndexBase) {
int FI = Addr.getFI();
// FIXME: We shouldn't be using getObjectSize/getObjectAlignment. The size
// and alignment should be based on the VT.
- MachineMemOperand *MMO = FuncInfo.MF->getMachineMemOperand(
- MachinePointerInfo::getFixedStack(FI, Offset), Flags,
- MFI.getObjectSize(FI), MFI.getObjectAlignment(FI));
+ MMO = FuncInfo.MF->getMachineMemOperand(
+ MachinePointerInfo::getFixedStack(FI, Offset), Flags,
+ MFI.getObjectSize(FI), MFI.getObjectAlignment(FI));
// Now add the rest of the operands.
- MIB.addFrameIndex(FI).addImm(Offset).addMemOperand(MMO);
+ MIB.addFrameIndex(FI).addImm(Offset);
} else {
// Now add the rest of the operands.
MIB.addReg(Addr.getReg());
MIB.addImm(Offset);
}
+
+ if (MMO)
+ MIB.addMemOperand(MMO);
}
bool AArch64FastISel::EmitLoad(MVT VT, unsigned &ResultReg, Address Addr,
- bool UseUnscaled) {
+ MachineMemOperand *MMO, bool UseUnscaled) {
// Negative offsets require unscaled, 9-bit, signed immediate offsets.
// Otherwise, we try using scaled, 12-bit, unsigned immediate offsets.
if (!UseUnscaled && Addr.getOffset() < 0)
int64_t Offset = Addr.getOffset();
if (Offset & (ScaleFactor - 1))
// Retry using an unscaled, 9-bit, signed immediate offset.
- return EmitLoad(VT, ResultReg, Addr, /*UseUnscaled*/ true);
+ return EmitLoad(VT, ResultReg, Addr, MMO, /*UseUnscaled*/ true);
Addr.setOffset(Offset / ScaleFactor);
}
ResultReg = createResultReg(RC);
MachineInstrBuilder MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc,
TII.get(Opc), ResultReg);
- AddLoadStoreOperands(Addr, MIB, MachineMemOperand::MOLoad, UseUnscaled);
+ AddLoadStoreOperands(Addr, MIB, MachineMemOperand::MOLoad, MMO, UseUnscaled);
// Loading an i1 requires special handling.
if (VTIsi1) {
return false;
unsigned ResultReg;
- if (!EmitLoad(VT, ResultReg, Addr))
+ if (!EmitLoad(VT, ResultReg, Addr, createMachineMemOperandFor(I)))
return false;
UpdateValueMap(I, ResultReg);
}
bool AArch64FastISel::EmitStore(MVT VT, unsigned SrcReg, Address Addr,
- bool UseUnscaled) {
+ MachineMemOperand *MMO, bool UseUnscaled) {
// Negative offsets require unscaled, 9-bit, signed immediate offsets.
// Otherwise, we try using scaled, 12-bit, unsigned immediate offsets.
if (!UseUnscaled && Addr.getOffset() < 0)
int64_t Offset = Addr.getOffset();
if (Offset & (ScaleFactor - 1))
// Retry using an unscaled, 9-bit, signed immediate offset.
- return EmitStore(VT, SrcReg, Addr, /*UseUnscaled*/ true);
+ return EmitStore(VT, SrcReg, Addr, MMO, /*UseUnscaled*/ true);
Addr.setOffset(Offset / ScaleFactor);
}
// Create the base instruction, then add the operands.
MachineInstrBuilder MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc,
TII.get(StrOpc)).addReg(SrcReg);
- AddLoadStoreOperands(Addr, MIB, MachineMemOperand::MOStore, UseUnscaled);
+ AddLoadStoreOperands(Addr, MIB, MachineMemOperand::MOStore, MMO, UseUnscaled);
+
return true;
}
if (!ComputeAddress(I->getOperand(1), Addr))
return false;
- if (!EmitStore(VT, SrcReg, Addr))
+ if (!EmitStore(VT, SrcReg, Addr, createMachineMemOperandFor(I)))
return false;
return true;
}
Addr.setReg(AArch64::SP);
Addr.setOffset(VA.getLocMemOffset() + BEAlign);
- if (!EmitStore(ArgVT, ArgReg, Addr))
+ unsigned Alignment = DL.getABITypeAlignment(ArgVal->getType());
+ MachineMemOperand *MMO = FuncInfo.MF->getMachineMemOperand(
+ MachinePointerInfo::getStack(Addr.getOffset()),
+ MachineMemOperand::MOStore, ArgVT.getStoreSize(), Alignment);
+
+ if (!EmitStore(ArgVT, ArgReg, Addr, MMO))
return false;
}
}
bool AArch64FastISel::FastLowerCall(CallLoweringInfo &CLI) {
CallingConv::ID CC = CLI.CallConv;
+ bool IsTailCall = CLI.IsTailCall;
bool IsVarArg = CLI.IsVarArg;
const Value *Callee = CLI.Callee;
const char *SymName = CLI.SymName;
+ // Allow SelectionDAG isel to handle tail calls.
+ if (IsTailCall)
+ return false;
+
CodeModel::Model CM = TM.getCodeModel();
// Only support the small and large code model.
if (CM != CodeModel::Small && CM != CodeModel::Large)
projects / oota-llvm.git / blobdiff