diff options
Diffstat (limited to 'lib/Target/Mips/MipsSEInstrInfo.cpp')
| -rw-r--r-- | lib/Target/Mips/MipsSEInstrInfo.cpp | 266 |
1 files changed, 150 insertions, 116 deletions
diff --git a/lib/Target/Mips/MipsSEInstrInfo.cpp b/lib/Target/Mips/MipsSEInstrInfo.cpp index 9521043..02931a3 100644 --- a/lib/Target/Mips/MipsSEInstrInfo.cpp +++ b/lib/Target/Mips/MipsSEInstrInfo.cpp @@ -24,11 +24,6 @@ using namespace llvm; -static cl::opt<bool> NoDPLoadStore("mno-ldc1-sdc1", cl::init(false), - cl::desc("Expand double precision loads and " - "stores to their single precision " - "counterparts.")); - MipsSEInstrInfo::MipsSEInstrInfo(MipsTargetMachine &tm) : MipsInstrInfo(tm, tm.getRelocationModel() == Reloc::PIC_ ? Mips::B : Mips::J), @@ -49,10 +44,8 @@ isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const { unsigned Opc = MI->getOpcode(); - if ((Opc == Mips::LW) || (Opc == Mips::LW_P8) || (Opc == Mips::LD) || - (Opc == Mips::LD_P8) || (Opc == Mips::LWC1) || (Opc == Mips::LWC1_P8) || - (Opc == Mips::LDC1) || (Opc == Mips::LDC164) || - (Opc == Mips::LDC164_P8)) { + if ((Opc == Mips::LW) || (Opc == Mips::LD) || + (Opc == Mips::LWC1) || (Opc == Mips::LDC1) || (Opc == Mips::LDC164)) { if ((MI->getOperand(1).isFI()) && // is a stack slot (MI->getOperand(2).isImm()) && // the imm is zero (isZeroImm(MI->getOperand(2)))) { @@ -74,10 +67,8 @@ isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const { unsigned Opc = MI->getOpcode(); - if ((Opc == Mips::SW) || (Opc == Mips::SW_P8) || (Opc == Mips::SD) || - (Opc == Mips::SD_P8) || (Opc == Mips::SWC1) || (Opc == Mips::SWC1_P8) || - (Opc == Mips::SDC1) || (Opc == Mips::SDC164) || - (Opc == Mips::SDC164_P8)) { + if ((Opc == Mips::SW) || (Opc == Mips::SD) || + (Opc == Mips::SWC1) || (Opc == Mips::SDC1) || (Opc == Mips::SDC164)) { if ((MI->getOperand(1).isFI()) && // is a stack slot (MI->getOperand(2).isImm()) && // the imm is zero (isZeroImm(MI->getOperand(2)))) { @@ -101,32 +92,34 @@ void MipsSEInstrInfo::copyPhysReg(MachineBasicBlock &MBB, Opc = Mips::CFC1; else if (Mips::FGR32RegClass.contains(SrcReg)) Opc = Mips::MFC1; - else if (Mips::HIRegsRegClass.contains(SrcReg)) + else if (Mips::HI32RegClass.contains(SrcReg)) Opc = Mips::MFHI, SrcReg = 0; - else if (Mips::LORegsRegClass.contains(SrcReg)) + else if (Mips::LO32RegClass.contains(SrcReg)) Opc = Mips::MFLO, SrcReg = 0; - else if (Mips::HIRegsDSPRegClass.contains(SrcReg)) + else if (Mips::HI32DSPRegClass.contains(SrcReg)) Opc = Mips::MFHI_DSP; - else if (Mips::LORegsDSPRegClass.contains(SrcReg)) + else if (Mips::LO32DSPRegClass.contains(SrcReg)) Opc = Mips::MFLO_DSP; else if (Mips::DSPCCRegClass.contains(SrcReg)) { BuildMI(MBB, I, DL, get(Mips::RDDSP), DestReg).addImm(1 << 4) .addReg(SrcReg, RegState::Implicit | getKillRegState(KillSrc)); return; } + else if (Mips::MSACtrlRegClass.contains(SrcReg)) + Opc = Mips::CFCMSA; } else if (Mips::GPR32RegClass.contains(SrcReg)) { // Copy from CPU Reg. if (Mips::CCRRegClass.contains(DestReg)) Opc = Mips::CTC1; else if (Mips::FGR32RegClass.contains(DestReg)) Opc = Mips::MTC1; - else if (Mips::HIRegsRegClass.contains(DestReg)) + else if (Mips::HI32RegClass.contains(DestReg)) Opc = Mips::MTHI, DestReg = 0; - else if (Mips::LORegsRegClass.contains(DestReg)) + else if (Mips::LO32RegClass.contains(DestReg)) Opc = Mips::MTLO, DestReg = 0; - else if (Mips::HIRegsDSPRegClass.contains(DestReg)) + else if (Mips::HI32DSPRegClass.contains(DestReg)) Opc = Mips::MTHI_DSP; - else if (Mips::LORegsDSPRegClass.contains(DestReg)) + else if (Mips::LO32DSPRegClass.contains(DestReg)) Opc = Mips::MTLO_DSP; else if (Mips::DSPCCRegClass.contains(DestReg)) { BuildMI(MBB, I, DL, get(Mips::WRDSP)) @@ -134,6 +127,8 @@ void MipsSEInstrInfo::copyPhysReg(MachineBasicBlock &MBB, .addReg(DestReg, RegState::ImplicitDefine); return; } + else if (Mips::MSACtrlRegClass.contains(DestReg)) + Opc = Mips::CTCMSA; } else if (Mips::FGR32RegClass.contains(DestReg, SrcReg)) Opc = Mips::FMOV_S; @@ -144,21 +139,25 @@ void MipsSEInstrInfo::copyPhysReg(MachineBasicBlock &MBB, else if (Mips::GPR64RegClass.contains(DestReg)) { // Copy to CPU64 Reg. if (Mips::GPR64RegClass.contains(SrcReg)) Opc = Mips::DADDu, ZeroReg = Mips::ZERO_64; - else if (Mips::HIRegs64RegClass.contains(SrcReg)) + else if (Mips::HI64RegClass.contains(SrcReg)) Opc = Mips::MFHI64, SrcReg = 0; - else if (Mips::LORegs64RegClass.contains(SrcReg)) + else if (Mips::LO64RegClass.contains(SrcReg)) Opc = Mips::MFLO64, SrcReg = 0; else if (Mips::FGR64RegClass.contains(SrcReg)) Opc = Mips::DMFC1; } else if (Mips::GPR64RegClass.contains(SrcReg)) { // Copy from CPU64 Reg. - if (Mips::HIRegs64RegClass.contains(DestReg)) + if (Mips::HI64RegClass.contains(DestReg)) Opc = Mips::MTHI64, DestReg = 0; - else if (Mips::LORegs64RegClass.contains(DestReg)) + else if (Mips::LO64RegClass.contains(DestReg)) Opc = Mips::MTLO64, DestReg = 0; else if (Mips::FGR64RegClass.contains(DestReg)) Opc = Mips::DMTC1; } + else if (Mips::MSA128BRegClass.contains(DestReg)) { // Copy to MSA reg + if (Mips::MSA128BRegClass.contains(SrcReg)) + Opc = Mips::MOVE_V; + } assert(Opc && "Cannot copy registers"); @@ -186,23 +185,31 @@ storeRegToStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned Opc = 0; if (Mips::GPR32RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::SW_P8 : Mips::SW; + Opc = Mips::SW; else if (Mips::GPR64RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::SD_P8 : Mips::SD; - else if (Mips::ACRegsRegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::STORE_AC64_P8 : Mips::STORE_AC64; - else if (Mips::ACRegsDSPRegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::STORE_AC_DSP_P8 : Mips::STORE_AC_DSP; - else if (Mips::ACRegs128RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::STORE_AC128_P8 : Mips::STORE_AC128; + Opc = Mips::SD; + else if (Mips::ACC64RegClass.hasSubClassEq(RC)) + Opc = Mips::STORE_ACC64; + else if (Mips::ACC64DSPRegClass.hasSubClassEq(RC)) + Opc = Mips::STORE_ACC64DSP; + else if (Mips::ACC128RegClass.hasSubClassEq(RC)) + Opc = Mips::STORE_ACC128; else if (Mips::DSPCCRegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::STORE_CCOND_DSP_P8 : Mips::STORE_CCOND_DSP; + Opc = Mips::STORE_CCOND_DSP; else if (Mips::FGR32RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::SWC1_P8 : Mips::SWC1; + Opc = Mips::SWC1; else if (Mips::AFGR64RegClass.hasSubClassEq(RC)) Opc = Mips::SDC1; else if (Mips::FGR64RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::SDC164_P8 : Mips::SDC164; + Opc = Mips::SDC164; + else if (RC->hasType(MVT::v16i8)) + Opc = Mips::ST_B; + else if (RC->hasType(MVT::v8i16) || RC->hasType(MVT::v8f16)) + Opc = Mips::ST_H; + else if (RC->hasType(MVT::v4i32) || RC->hasType(MVT::v4f32)) + Opc = Mips::ST_W; + else if (RC->hasType(MVT::v2i64) || RC->hasType(MVT::v2f64)) + Opc = Mips::ST_D; assert(Opc && "Register class not handled!"); BuildMI(MBB, I, DL, get(Opc)).addReg(SrcReg, getKillRegState(isKill)) @@ -219,23 +226,31 @@ loadRegFromStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned Opc = 0; if (Mips::GPR32RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LW_P8 : Mips::LW; + Opc = Mips::LW; else if (Mips::GPR64RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LD_P8 : Mips::LD; - else if (Mips::ACRegsRegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LOAD_AC64_P8 : Mips::LOAD_AC64; - else if (Mips::ACRegsDSPRegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LOAD_AC_DSP_P8 : Mips::LOAD_AC_DSP; - else if (Mips::ACRegs128RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LOAD_AC128_P8 : Mips::LOAD_AC128; + Opc = Mips::LD; + else if (Mips::ACC64RegClass.hasSubClassEq(RC)) + Opc = Mips::LOAD_ACC64; + else if (Mips::ACC64DSPRegClass.hasSubClassEq(RC)) + Opc = Mips::LOAD_ACC64DSP; + else if (Mips::ACC128RegClass.hasSubClassEq(RC)) + Opc = Mips::LOAD_ACC128; else if (Mips::DSPCCRegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LOAD_CCOND_DSP_P8 : Mips::LOAD_CCOND_DSP; + Opc = Mips::LOAD_CCOND_DSP; else if (Mips::FGR32RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LWC1_P8 : Mips::LWC1; + Opc = Mips::LWC1; else if (Mips::AFGR64RegClass.hasSubClassEq(RC)) Opc = Mips::LDC1; else if (Mips::FGR64RegClass.hasSubClassEq(RC)) - Opc = IsN64 ? Mips::LDC164_P8 : Mips::LDC164; + Opc = Mips::LDC164; + else if (RC->hasType(MVT::v16i8)) + Opc = Mips::LD_B; + else if (RC->hasType(MVT::v8i16) || RC->hasType(MVT::v8f16)) + Opc = Mips::LD_H; + else if (RC->hasType(MVT::v4i32) || RC->hasType(MVT::v4f32)) + Opc = Mips::LD_W; + else if (RC->hasType(MVT::v2i64) || RC->hasType(MVT::v2f64)) + Opc = Mips::LD_D; assert(Opc && "Register class not handled!"); BuildMI(MBB, I, DL, get(Opc), DestReg).addFrameIndex(FI).addImm(Offset) @@ -251,6 +266,27 @@ bool MipsSEInstrInfo::expandPostRAPseudo(MachineBasicBlock::iterator MI) const { case Mips::RetRA: expandRetRA(MBB, MI, Mips::RET); break; + case Mips::PseudoMFHI: + expandPseudoMFHiLo(MBB, MI, Mips::MFHI); + break; + case Mips::PseudoMFLO: + expandPseudoMFHiLo(MBB, MI, Mips::MFLO); + break; + case Mips::PseudoMFHI64: + expandPseudoMFHiLo(MBB, MI, Mips::MFHI64); + break; + case Mips::PseudoMFLO64: + expandPseudoMFHiLo(MBB, MI, Mips::MFLO64); + break; + case Mips::PseudoMTLOHI: + expandPseudoMTLoHi(MBB, MI, Mips::MTLO, Mips::MTHI, false); + break; + case Mips::PseudoMTLOHI64: + expandPseudoMTLoHi(MBB, MI, Mips::MTLO64, Mips::MTHI64, false); + break; + case Mips::PseudoMTLOHI_DSP: + expandPseudoMTLoHi(MBB, MI, Mips::MTLO_DSP, Mips::MTHI_DSP, true); + break; case Mips::PseudoCVT_S_W: expandCvtFPInt(MBB, MI, Mips::CVT_S_W, Mips::MTC1, false); break; @@ -267,16 +303,16 @@ bool MipsSEInstrInfo::expandPostRAPseudo(MachineBasicBlock::iterator MI) const { expandCvtFPInt(MBB, MI, Mips::CVT_D64_L, Mips::DMTC1, true); break; case Mips::BuildPairF64: - expandBuildPairF64(MBB, MI); + expandBuildPairF64(MBB, MI, false); break; - case Mips::ExtractElementF64: - expandExtractElementF64(MBB, MI); + case Mips::BuildPairF64_64: + expandBuildPairF64(MBB, MI, true); break; - case Mips::PseudoLDC1: - expandDPLoadStore(MBB, MI, Mips::LDC1, Mips::LWC1); + case Mips::ExtractElementF64: + expandExtractElementF64(MBB, MI, false); break; - case Mips::PseudoSDC1: - expandDPLoadStore(MBB, MI, Mips::SDC1, Mips::SWC1); + case Mips::ExtractElementF64_64: + expandExtractElementF64(MBB, MI, true); break; case Mips::MIPSeh_return32: case Mips::MIPSeh_return64: @@ -399,6 +435,41 @@ MipsSEInstrInfo::compareOpndSize(unsigned Opc, return std::make_pair(DstRegSize > SrcRegSize, DstRegSize < SrcRegSize); } +void MipsSEInstrInfo::expandPseudoMFHiLo(MachineBasicBlock &MBB, + MachineBasicBlock::iterator I, + unsigned NewOpc) const { + BuildMI(MBB, I, I->getDebugLoc(), get(NewOpc), I->getOperand(0).getReg()); +} + +void MipsSEInstrInfo::expandPseudoMTLoHi(MachineBasicBlock &MBB, + MachineBasicBlock::iterator I, + unsigned LoOpc, + unsigned HiOpc, + bool HasExplicitDef) const { + // Expand + // lo_hi pseudomtlohi $gpr0, $gpr1 + // to these two instructions: + // mtlo $gpr0 + // mthi $gpr1 + + DebugLoc DL = I->getDebugLoc(); + const MachineOperand &SrcLo = I->getOperand(1), &SrcHi = I->getOperand(2); + MachineInstrBuilder LoInst = BuildMI(MBB, I, DL, get(LoOpc)); + MachineInstrBuilder HiInst = BuildMI(MBB, I, DL, get(HiOpc)); + LoInst.addReg(SrcLo.getReg(), getKillRegState(SrcLo.isKill())); + HiInst.addReg(SrcHi.getReg(), getKillRegState(SrcHi.isKill())); + + // Add lo/hi registers if the mtlo/hi instructions created have explicit + // def registers. + if (HasExplicitDef) { + unsigned DstReg = I->getOperand(0).getReg(); + unsigned DstLo = getRegisterInfo().getSubReg(DstReg, Mips::sub_lo); + unsigned DstHi = getRegisterInfo().getSubReg(DstReg, Mips::sub_hi); + LoInst.addReg(DstLo, RegState::Define); + HiInst.addReg(DstHi, RegState::Define); + } +} + void MipsSEInstrInfo::expandCvtFPInt(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned CvtOpc, unsigned MovOpc, @@ -408,100 +479,63 @@ void MipsSEInstrInfo::expandCvtFPInt(MachineBasicBlock &MBB, unsigned DstReg = Dst.getReg(), SrcReg = Src.getReg(), TmpReg = DstReg; unsigned KillSrc = getKillRegState(Src.isKill()); DebugLoc DL = I->getDebugLoc(); - unsigned SubIdx = (IsI64 ? Mips::sub_32 : Mips::sub_fpeven); bool DstIsLarger, SrcIsLarger; tie(DstIsLarger, SrcIsLarger) = compareOpndSize(CvtOpc, *MBB.getParent()); if (DstIsLarger) - TmpReg = getRegisterInfo().getSubReg(DstReg, SubIdx); + TmpReg = getRegisterInfo().getSubReg(DstReg, Mips::sub_lo); if (SrcIsLarger) - DstReg = getRegisterInfo().getSubReg(DstReg, SubIdx); + DstReg = getRegisterInfo().getSubReg(DstReg, Mips::sub_lo); BuildMI(MBB, I, DL, MovDesc, TmpReg).addReg(SrcReg, KillSrc); BuildMI(MBB, I, DL, CvtDesc, DstReg).addReg(TmpReg, RegState::Kill); } void MipsSEInstrInfo::expandExtractElementF64(MachineBasicBlock &MBB, - MachineBasicBlock::iterator I) const { + MachineBasicBlock::iterator I, + bool FP64) const { unsigned DstReg = I->getOperand(0).getReg(); unsigned SrcReg = I->getOperand(1).getReg(); unsigned N = I->getOperand(2).getImm(); - const MCInstrDesc& Mfc1Tdd = get(Mips::MFC1); DebugLoc dl = I->getDebugLoc(); assert(N < 2 && "Invalid immediate"); - unsigned SubIdx = N ? Mips::sub_fpodd : Mips::sub_fpeven; + unsigned SubIdx = N ? Mips::sub_hi : Mips::sub_lo; unsigned SubReg = getRegisterInfo().getSubReg(SrcReg, SubIdx); - BuildMI(MBB, I, dl, Mfc1Tdd, DstReg).addReg(SubReg); + if (SubIdx == Mips::sub_hi && FP64) + BuildMI(MBB, I, dl, get(Mips::MFHC1), DstReg).addReg(SubReg); + else + BuildMI(MBB, I, dl, get(Mips::MFC1), DstReg).addReg(SubReg); } void MipsSEInstrInfo::expandBuildPairF64(MachineBasicBlock &MBB, - MachineBasicBlock::iterator I) const { + MachineBasicBlock::iterator I, + bool FP64) const { unsigned DstReg = I->getOperand(0).getReg(); unsigned LoReg = I->getOperand(1).getReg(), HiReg = I->getOperand(2).getReg(); const MCInstrDesc& Mtc1Tdd = get(Mips::MTC1); DebugLoc dl = I->getDebugLoc(); const TargetRegisterInfo &TRI = getRegisterInfo(); - // mtc1 Lo, $fp - // mtc1 Hi, $fp + 1 - BuildMI(MBB, I, dl, Mtc1Tdd, TRI.getSubReg(DstReg, Mips::sub_fpeven)) - .addReg(LoReg); - BuildMI(MBB, I, dl, Mtc1Tdd, TRI.getSubReg(DstReg, Mips::sub_fpodd)) - .addReg(HiReg); -} - -/// Add 4 to the displacement of operand MO. -static void fixDisp(MachineOperand &MO) { - switch (MO.getType()) { - default: - llvm_unreachable("Unhandled operand type."); - case MachineOperand::MO_Immediate: - MO.setImm(MO.getImm() + 4); - break; - case MachineOperand::MO_GlobalAddress: - case MachineOperand::MO_ConstantPoolIndex: - case MachineOperand::MO_BlockAddress: - case MachineOperand::MO_TargetIndex: - case MachineOperand::MO_ExternalSymbol: - MO.setOffset(MO.getOffset() + 4); - break; - } -} - -void MipsSEInstrInfo::expandDPLoadStore(MachineBasicBlock &MBB, - MachineBasicBlock::iterator I, - unsigned OpcD, unsigned OpcS) const { - // If NoDPLoadStore is false, just change the opcode. - if (!NoDPLoadStore) { - genInstrWithNewOpc(OpcD, I); - return; - } + // For FP32 mode: + // mtc1 Lo, $fp + // mtc1 Hi, $fp + 1 + // For FP64 mode: + // mtc1 Lo, $fp + // mthc1 Hi, $fp - // Expand a double precision FP load or store to two single precision - // instructions. + BuildMI(MBB, I, dl, Mtc1Tdd, TRI.getSubReg(DstReg, Mips::sub_lo)) + .addReg(LoReg); - const TargetRegisterInfo &TRI = getRegisterInfo(); - const MachineOperand &ValReg = I->getOperand(0); - unsigned LoReg = TRI.getSubReg(ValReg.getReg(), Mips::sub_fpeven); - unsigned HiReg = TRI.getSubReg(ValReg.getReg(), Mips::sub_fpodd); - - if (!TM.getSubtarget<MipsSubtarget>().isLittle()) - std::swap(LoReg, HiReg); - - // Create an instruction which loads from or stores to the lower memory - // address. - MachineInstrBuilder MIB = genInstrWithNewOpc(OpcS, I); - MIB->getOperand(0).setReg(LoReg); - - // Create an instruction which loads from or stores to the higher memory - // address. - MIB = genInstrWithNewOpc(OpcS, I); - MIB->getOperand(0).setReg(HiReg); - fixDisp(MIB->getOperand(2)); + if (FP64) + BuildMI(MBB, I, dl, get(Mips::MTHC1), TRI.getSubReg(DstReg, Mips::sub_hi)) + .addReg(HiReg); + else + BuildMI(MBB, I, dl, Mtc1Tdd, TRI.getSubReg(DstReg, Mips::sub_hi)) + .addReg(HiReg); } void MipsSEInstrInfo::expandEhReturn(MachineBasicBlock &MBB, |