namespace {
typedef MachineBasicBlock::iterator Iter;
-/// Helper class to expand accumulator pseudos.
-class ExpandACCPseudo {
+static std::pair<unsigned, unsigned> getMFHiLoOpc(unsigned Src) {
+ if (Mips::ACC64RegClass.contains(Src))
+ return std::make_pair((unsigned)Mips::PseudoMFHI,
+ (unsigned)Mips::PseudoMFLO);
+
+ if (Mips::ACC64DSPRegClass.contains(Src))
+ return std::make_pair((unsigned)Mips::MFHI_DSP, (unsigned)Mips::MFLO_DSP);
+
+ if (Mips::ACC128RegClass.contains(Src))
+ return std::make_pair((unsigned)Mips::PseudoMFHI64,
+ (unsigned)Mips::PseudoMFLO64);
+
+ return std::make_pair(0, 0);
+}
+
+/// Helper class to expand pseudos.
+class ExpandPseudo {
public:
- ExpandACCPseudo(MachineFunction &MF);
+ ExpandPseudo(MachineFunction &MF);
bool expand();
private:
bool expandInstr(MachineBasicBlock &MBB, Iter I);
- void expandLoad(MachineBasicBlock &MBB, Iter I, unsigned RegSize);
- void expandStore(MachineBasicBlock &MBB, Iter I, unsigned RegSize);
- void expandCopy(MachineBasicBlock &MBB, Iter I, unsigned RegSize);
+ void expandLoadCCond(MachineBasicBlock &MBB, Iter I);
+ void expandStoreCCond(MachineBasicBlock &MBB, Iter I);
+ void expandLoadACC(MachineBasicBlock &MBB, Iter I, unsigned RegSize);
+ void expandStoreACC(MachineBasicBlock &MBB, Iter I, unsigned MFHiOpc,
+ unsigned MFLoOpc, unsigned RegSize);
+ bool expandCopy(MachineBasicBlock &MBB, Iter I);
+ bool expandCopyACC(MachineBasicBlock &MBB, Iter I, unsigned MFHiOpc,
+ unsigned MFLoOpc);
MachineFunction &MF;
- const MipsSEInstrInfo &TII;
- const MipsRegisterInfo &RegInfo;
MachineRegisterInfo &MRI;
};
}
-ExpandACCPseudo::ExpandACCPseudo(MachineFunction &MF_)
- : MF(MF_),
- TII(*static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo())),
- RegInfo(TII.getRegisterInfo()), MRI(MF.getRegInfo()) {}
+ExpandPseudo::ExpandPseudo(MachineFunction &MF_)
+ : MF(MF_), MRI(MF.getRegInfo()) {}
-bool ExpandACCPseudo::expand() {
+bool ExpandPseudo::expand() {
bool Expanded = false;
for (MachineFunction::iterator BB = MF.begin(), BBEnd = MF.end();
return Expanded;
}
-bool ExpandACCPseudo::expandInstr(MachineBasicBlock &MBB, Iter I) {
+bool ExpandPseudo::expandInstr(MachineBasicBlock &MBB, Iter I) {
switch(I->getOpcode()) {
- case Mips::LOAD_AC64:
- case Mips::LOAD_AC64_P8:
- case Mips::LOAD_AC_DSP:
- case Mips::LOAD_AC_DSP_P8:
- expandLoad(MBB, I, 4);
+ case Mips::LOAD_CCOND_DSP:
+ expandLoadCCond(MBB, I);
+ break;
+ case Mips::STORE_CCOND_DSP:
+ expandStoreCCond(MBB, I);
+ break;
+ case Mips::LOAD_ACC64:
+ case Mips::LOAD_ACC64DSP:
+ expandLoadACC(MBB, I, 4);
break;
- case Mips::LOAD_AC128:
- case Mips::LOAD_AC128_P8:
- expandLoad(MBB, I, 8);
+ case Mips::LOAD_ACC128:
+ expandLoadACC(MBB, I, 8);
break;
- case Mips::STORE_AC64:
- case Mips::STORE_AC64_P8:
- case Mips::STORE_AC_DSP:
- case Mips::STORE_AC_DSP_P8:
- expandStore(MBB, I, 4);
+ case Mips::STORE_ACC64:
+ expandStoreACC(MBB, I, Mips::PseudoMFHI, Mips::PseudoMFLO, 4);
break;
- case Mips::STORE_AC128:
- case Mips::STORE_AC128_P8:
- expandStore(MBB, I, 8);
+ case Mips::STORE_ACC64DSP:
+ expandStoreACC(MBB, I, Mips::MFHI_DSP, Mips::MFLO_DSP, 4);
break;
- case Mips::COPY_AC64:
- case Mips::COPY_AC_DSP:
- expandCopy(MBB, I, 4);
+ case Mips::STORE_ACC128:
+ expandStoreACC(MBB, I, Mips::PseudoMFHI64, Mips::PseudoMFLO64, 8);
break;
- case Mips::COPY_AC128:
- expandCopy(MBB, I, 8);
+ case TargetOpcode::COPY:
+ if (!expandCopy(MBB, I))
+ return false;
break;
default:
return false;
return true;
}
-void ExpandACCPseudo::expandLoad(MachineBasicBlock &MBB, Iter I,
+void ExpandPseudo::expandLoadCCond(MachineBasicBlock &MBB, Iter I) {
+ // load $vr, FI
+ // copy ccond, $vr
+
+ assert(I->getOperand(0).isReg() && I->getOperand(1).isFI());
+
+ const MipsSEInstrInfo &TII =
+ *static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+ const MipsRegisterInfo &RegInfo =
+ *static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
+ const TargetRegisterClass *RC = RegInfo.intRegClass(4);
+ unsigned VR = MRI.createVirtualRegister(RC);
+ unsigned Dst = I->getOperand(0).getReg(), FI = I->getOperand(1).getIndex();
+
+ TII.loadRegFromStack(MBB, I, VR, FI, RC, &RegInfo, 0);
+ BuildMI(MBB, I, I->getDebugLoc(), TII.get(TargetOpcode::COPY), Dst)
+ .addReg(VR, RegState::Kill);
+}
+
+void ExpandPseudo::expandStoreCCond(MachineBasicBlock &MBB, Iter I) {
+ // copy $vr, ccond
+ // store $vr, FI
+
+ assert(I->getOperand(0).isReg() && I->getOperand(1).isFI());
+
+ const MipsSEInstrInfo &TII =
+ *static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+ const MipsRegisterInfo &RegInfo =
+ *static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
+ const TargetRegisterClass *RC = RegInfo.intRegClass(4);
+ unsigned VR = MRI.createVirtualRegister(RC);
+ unsigned Src = I->getOperand(0).getReg(), FI = I->getOperand(1).getIndex();
+
+ BuildMI(MBB, I, I->getDebugLoc(), TII.get(TargetOpcode::COPY), VR)
+ .addReg(Src, getKillRegState(I->getOperand(0).isKill()));
+ TII.storeRegToStack(MBB, I, VR, true, FI, RC, &RegInfo, 0);
+}
+
+void ExpandPseudo::expandLoadACC(MachineBasicBlock &MBB, Iter I,
unsigned RegSize) {
// load $vr0, FI
// copy lo, $vr0
assert(I->getOperand(0).isReg() && I->getOperand(1).isFI());
+ const MipsSEInstrInfo &TII =
+ *static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+ const MipsRegisterInfo &RegInfo =
+ *static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
const TargetRegisterClass *RC = RegInfo.intRegClass(RegSize);
unsigned VR0 = MRI.createVirtualRegister(RC);
unsigned VR1 = MRI.createVirtualRegister(RC);
BuildMI(MBB, I, DL, Desc, Hi).addReg(VR1, RegState::Kill);
}
-void ExpandACCPseudo::expandStore(MachineBasicBlock &MBB, Iter I,
+void ExpandPseudo::expandStoreACC(MachineBasicBlock &MBB, Iter I,
+ unsigned MFHiOpc, unsigned MFLoOpc,
unsigned RegSize) {
- // copy $vr0, lo
+ // mflo $vr0, src
// store $vr0, FI
- // copy $vr1, hi
+ // mfhi $vr1, src
// store $vr1, FI + 4
assert(I->getOperand(0).isReg() && I->getOperand(1).isFI());
+ const MipsSEInstrInfo &TII =
+ *static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+ const MipsRegisterInfo &RegInfo =
+ *static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
const TargetRegisterClass *RC = RegInfo.intRegClass(RegSize);
unsigned VR0 = MRI.createVirtualRegister(RC);
unsigned VR1 = MRI.createVirtualRegister(RC);
unsigned Src = I->getOperand(0).getReg(), FI = I->getOperand(1).getIndex();
unsigned SrcKill = getKillRegState(I->getOperand(0).isKill());
- unsigned Lo = RegInfo.getSubReg(Src, Mips::sub_lo);
- unsigned Hi = RegInfo.getSubReg(Src, Mips::sub_hi);
DebugLoc DL = I->getDebugLoc();
- BuildMI(MBB, I, DL, TII.get(TargetOpcode::COPY), VR0).addReg(Lo, SrcKill);
+ BuildMI(MBB, I, DL, TII.get(MFLoOpc), VR0).addReg(Src);
TII.storeRegToStack(MBB, I, VR0, true, FI, RC, &RegInfo, 0);
- BuildMI(MBB, I, DL, TII.get(TargetOpcode::COPY), VR1).addReg(Hi, SrcKill);
+ BuildMI(MBB, I, DL, TII.get(MFHiOpc), VR1).addReg(Src, SrcKill);
TII.storeRegToStack(MBB, I, VR1, true, FI, RC, &RegInfo, RegSize);
}
-void ExpandACCPseudo::expandCopy(MachineBasicBlock &MBB, Iter I,
- unsigned RegSize) {
- // copy $vr0, src_lo
+bool ExpandPseudo::expandCopy(MachineBasicBlock &MBB, Iter I) {
+ unsigned Src = I->getOperand(1).getReg();
+ std::pair<unsigned, unsigned> Opcodes = getMFHiLoOpc(Src);
+
+ if (!Opcodes.first)
+ return false;
+
+ return expandCopyACC(MBB, I, Opcodes.first, Opcodes.second);
+}
+
+bool ExpandPseudo::expandCopyACC(MachineBasicBlock &MBB, Iter I,
+ unsigned MFHiOpc, unsigned MFLoOpc) {
+ // mflo $vr0, src
// copy dst_lo, $vr0
- // copy $vr1, src_hi
+ // mfhi $vr1, src
// copy dst_hi, $vr1
- const TargetRegisterClass *RC = RegInfo.intRegClass(RegSize);
+ const MipsSEInstrInfo &TII =
+ *static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+ const MipsRegisterInfo &RegInfo =
+ *static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
+ unsigned Dst = I->getOperand(0).getReg(), Src = I->getOperand(1).getReg();
+ unsigned VRegSize = RegInfo.getMinimalPhysRegClass(Dst)->getSize() / 2;
+ const TargetRegisterClass *RC = RegInfo.intRegClass(VRegSize);
unsigned VR0 = MRI.createVirtualRegister(RC);
unsigned VR1 = MRI.createVirtualRegister(RC);
- unsigned Dst = I->getOperand(0).getReg(), Src = I->getOperand(1).getReg();
unsigned SrcKill = getKillRegState(I->getOperand(1).isKill());
unsigned DstLo = RegInfo.getSubReg(Dst, Mips::sub_lo);
unsigned DstHi = RegInfo.getSubReg(Dst, Mips::sub_hi);
- unsigned SrcLo = RegInfo.getSubReg(Src, Mips::sub_lo);
- unsigned SrcHi = RegInfo.getSubReg(Src, Mips::sub_hi);
DebugLoc DL = I->getDebugLoc();
- BuildMI(MBB, I, DL, TII.get(TargetOpcode::COPY), VR0).addReg(SrcLo, SrcKill);
+ BuildMI(MBB, I, DL, TII.get(MFLoOpc), VR0).addReg(Src);
BuildMI(MBB, I, DL, TII.get(TargetOpcode::COPY), DstLo)
.addReg(VR0, RegState::Kill);
- BuildMI(MBB, I, DL, TII.get(TargetOpcode::COPY), VR1).addReg(SrcHi, SrcKill);
+ BuildMI(MBB, I, DL, TII.get(MFHiOpc), VR1).addReg(Src, SrcKill);
BuildMI(MBB, I, DL, TII.get(TargetOpcode::COPY), DstHi)
.addReg(VR1, RegState::Kill);
+ return true;
}
unsigned MipsSEFrameLowering::ehDataReg(unsigned I) const {
MachineBasicBlock &MBB = MF.front();
MachineFrameInfo *MFI = MF.getFrameInfo();
MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
- const MipsRegisterInfo *RegInfo =
- static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
const MipsSEInstrInfo &TII =
*static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+ const MipsRegisterInfo &RegInfo =
+ *static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
MachineBasicBlock::iterator MBBI = MBB.begin();
DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
unsigned SP = STI.isABI_N64() ? Mips::SP_64 : Mips::SP;
if (StackSize == 0 && !MFI->adjustsStack()) return;
MachineModuleInfo &MMI = MF.getMMI();
- std::vector<MachineMove> &Moves = MMI.getFrameMoves();
+ const MCRegisterInfo *MRI = MMI.getContext().getRegisterInfo();
MachineLocation DstML, SrcML;
// Adjust stack.
TII.adjustStackPtr(SP, -StackSize, MBB, MBBI);
// emit ".cfi_def_cfa_offset StackSize"
- MCSymbol *AdjustSPLabel = MMI.getContext().CreateTempSymbol();
- BuildMI(MBB, MBBI, dl,
- TII.get(TargetOpcode::PROLOG_LABEL)).addSym(AdjustSPLabel);
- DstML = MachineLocation(MachineLocation::VirtualFP);
- SrcML = MachineLocation(MachineLocation::VirtualFP, -StackSize);
- Moves.push_back(MachineMove(AdjustSPLabel, DstML, SrcML));
+ unsigned CFIIndex = MMI.addFrameInst(
+ MCCFIInstruction::createDefCfaOffset(nullptr, -StackSize));
+ BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
const std::vector<CalleeSavedInfo> &CSI = MFI->getCalleeSavedInfo();
// Iterate over list of callee-saved registers and emit .cfi_offset
// directives.
- MCSymbol *CSLabel = MMI.getContext().CreateTempSymbol();
- BuildMI(MBB, MBBI, dl,
- TII.get(TargetOpcode::PROLOG_LABEL)).addSym(CSLabel);
-
for (std::vector<CalleeSavedInfo>::const_iterator I = CSI.begin(),
E = CSI.end(); I != E; ++I) {
int64_t Offset = MFI->getObjectOffset(I->getFrameIdx());
// If Reg is a double precision register, emit two cfa_offsets,
// one for each of the paired single precision registers.
if (Mips::AFGR64RegClass.contains(Reg)) {
- MachineLocation DstML0(MachineLocation::VirtualFP, Offset);
- MachineLocation DstML1(MachineLocation::VirtualFP, Offset + 4);
- MachineLocation SrcML0(RegInfo->getSubReg(Reg, Mips::sub_fpeven));
- MachineLocation SrcML1(RegInfo->getSubReg(Reg, Mips::sub_fpodd));
+ unsigned Reg0 =
+ MRI->getDwarfRegNum(RegInfo.getSubReg(Reg, Mips::sub_lo), true);
+ unsigned Reg1 =
+ MRI->getDwarfRegNum(RegInfo.getSubReg(Reg, Mips::sub_hi), true);
if (!STI.isLittle())
- std::swap(SrcML0, SrcML1);
+ std::swap(Reg0, Reg1);
- Moves.push_back(MachineMove(CSLabel, DstML0, SrcML0));
- Moves.push_back(MachineMove(CSLabel, DstML1, SrcML1));
+ unsigned CFIIndex = MMI.addFrameInst(
+ MCCFIInstruction::createOffset(nullptr, Reg0, Offset));
+ BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
+
+ CFIIndex = MMI.addFrameInst(
+ MCCFIInstruction::createOffset(nullptr, Reg1, Offset + 4));
+ BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
} else {
- // Reg is either in CPURegs or FGR32.
- DstML = MachineLocation(MachineLocation::VirtualFP, Offset);
- SrcML = MachineLocation(Reg);
- Moves.push_back(MachineMove(CSLabel, DstML, SrcML));
+ // Reg is either in GPR32 or FGR32.
+ unsigned CFIIndex = MMI.addFrameInst(MCCFIInstruction::createOffset(
+ nullptr, MRI->getDwarfRegNum(Reg, 1), Offset));
+ BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
}
}
}
if (MipsFI->callsEhReturn()) {
const TargetRegisterClass *RC = STI.isABI_N64() ?
- &Mips::CPU64RegsRegClass : &Mips::CPURegsRegClass;
+ &Mips::GPR64RegClass : &Mips::GPR32RegClass;
// Insert instructions that spill eh data registers.
for (int I = 0; I < 4; ++I) {
if (!MBB.isLiveIn(ehDataReg(I)))
MBB.addLiveIn(ehDataReg(I));
TII.storeRegToStackSlot(MBB, MBBI, ehDataReg(I), false,
- MipsFI->getEhDataRegFI(I), RC, RegInfo);
+ MipsFI->getEhDataRegFI(I), RC, &RegInfo);
}
// Emit .cfi_offset directives for eh data registers.
- MCSymbol *CSLabel2 = MMI.getContext().CreateTempSymbol();
- BuildMI(MBB, MBBI, dl,
- TII.get(TargetOpcode::PROLOG_LABEL)).addSym(CSLabel2);
for (int I = 0; I < 4; ++I) {
int64_t Offset = MFI->getObjectOffset(MipsFI->getEhDataRegFI(I));
- DstML = MachineLocation(MachineLocation::VirtualFP, Offset);
- SrcML = MachineLocation(ehDataReg(I));
- Moves.push_back(MachineMove(CSLabel2, DstML, SrcML));
+ unsigned Reg = MRI->getDwarfRegNum(ehDataReg(I), true);
+ unsigned CFIIndex = MMI.addFrameInst(
+ MCCFIInstruction::createOffset(nullptr, Reg, Offset));
+ BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
}
}
// if framepointer enabled, set it to point to the stack pointer.
if (hasFP(MF)) {
// Insert instruction "move $fp, $sp" at this location.
- BuildMI(MBB, MBBI, dl, TII.get(ADDu), FP).addReg(SP).addReg(ZERO);
+ BuildMI(MBB, MBBI, dl, TII.get(ADDu), FP).addReg(SP).addReg(ZERO)
+ .setMIFlag(MachineInstr::FrameSetup);
// emit ".cfi_def_cfa_register $fp"
- MCSymbol *SetFPLabel = MMI.getContext().CreateTempSymbol();
- BuildMI(MBB, MBBI, dl,
- TII.get(TargetOpcode::PROLOG_LABEL)).addSym(SetFPLabel);
- DstML = MachineLocation(FP);
- SrcML = MachineLocation(MachineLocation::VirtualFP);
- Moves.push_back(MachineMove(SetFPLabel, DstML, SrcML));
+ unsigned CFIIndex = MMI.addFrameInst(MCCFIInstruction::createDefCfaRegister(
+ nullptr, MRI->getDwarfRegNum(FP, true)));
+ BuildMI(MBB, MBBI, dl, TII.get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
}
}
MachineBasicBlock::iterator MBBI = MBB.getLastNonDebugInstr();
MachineFrameInfo *MFI = MF.getFrameInfo();
MipsFunctionInfo *MipsFI = MF.getInfo<MipsFunctionInfo>();
- const MipsRegisterInfo *RegInfo =
- static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
const MipsSEInstrInfo &TII =
*static_cast<const MipsSEInstrInfo*>(MF.getTarget().getInstrInfo());
+ const MipsRegisterInfo &RegInfo =
+ *static_cast<const MipsRegisterInfo*>(MF.getTarget().getRegisterInfo());
+
DebugLoc dl = MBBI->getDebugLoc();
unsigned SP = STI.isABI_N64() ? Mips::SP_64 : Mips::SP;
unsigned FP = STI.isABI_N64() ? Mips::FP_64 : Mips::FP;
if (MipsFI->callsEhReturn()) {
const TargetRegisterClass *RC = STI.isABI_N64() ?
- &Mips::CPU64RegsRegClass : &Mips::CPURegsRegClass;
+ &Mips::GPR64RegClass : &Mips::GPR32RegClass;
// Find first instruction that restores a callee-saved register.
MachineBasicBlock::iterator I = MBBI;
// Insert instructions that restore eh data registers.
for (int J = 0; J < 4; ++J) {
TII.loadRegFromStackSlot(MBB, I, ehDataReg(J), MipsFI->getEhDataRegFI(J),
- RC, RegInfo);
+ RC, &RegInfo);
}
}
// Expand pseudo instructions which load, store or copy accumulators.
// Add an emergency spill slot if a pseudo was expanded.
- if (ExpandACCPseudo(MF).expand()) {
+ if (ExpandPseudo(MF).expand()) {
// The spill slot should be half the size of the accumulator. If target is
// mips64, it should be 64-bit, otherwise it should be 32-bt.
const TargetRegisterClass *RC = STI.hasMips64() ?
- &Mips::CPU64RegsRegClass : &Mips::CPURegsRegClass;
+ &Mips::GPR64RegClass : &Mips::GPR32RegClass;
int FI = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
RC->getAlignment(), false);
RS->addScavengingFrameIndex(FI);
return;
const TargetRegisterClass *RC = STI.isABI_N64() ?
- &Mips::CPU64RegsRegClass : &Mips::CPURegsRegClass;
+ &Mips::GPR64RegClass : &Mips::GPR32RegClass;
int FI = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
RC->getAlignment(), false);
RS->addScavengingFrameIndex(FI);
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