X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FXCore%2FXCoreRegisterInfo.cpp;h=1b78b373fffa4ed29d9571ce4a330a3d7e59b23b;hb=cfc3fb57372b2ebd580b966469121cba2029bae9;hp=059a836c9e89e16444b8bfcd0a008c58e9bedac0;hpb=bd9ef18f74a361e0ed630d373677c6fc0ce3cad9;p=oota-llvm.git diff --git a/lib/Target/XCore/XCoreRegisterInfo.cpp b/lib/Target/XCore/XCoreRegisterInfo.cpp index 059a836c9e8..1b78b373fff 100644 --- a/lib/Target/XCore/XCoreRegisterInfo.cpp +++ b/lib/Target/XCore/XCoreRegisterInfo.cpp @@ -17,11 +17,10 @@ #include "llvm/CodeGen/MachineInstrBuilder.h" #include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineFrameInfo.h" -#include "llvm/CodeGen/MachineLocation.h" #include "llvm/CodeGen/MachineModuleInfo.h" #include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/RegisterScavenging.h" -#include "llvm/Target/TargetFrameInfo.h" +#include "llvm/Target/TargetFrameLowering.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetOptions.h" #include "llvm/Target/TargetInstrInfo.h" @@ -30,12 +29,16 @@ #include "llvm/ADT/BitVector.h" #include "llvm/ADT/STLExtras.h" #include "llvm/Support/Debug.h" +#include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/raw_ostream.h" + +#define GET_REGINFO_TARGET_DESC +#include "XCoreGenRegisterInfo.inc" using namespace llvm; XCoreRegisterInfo::XCoreRegisterInfo(const TargetInstrInfo &tii) - : XCoreGenRegisterInfo(XCore::ADJCALLSTACKDOWN, XCore::ADJCALLSTACKUP), - TII(tii) { + : XCoreGenRegisterInfo(XCore::LR), TII(tii) { } // helper functions @@ -65,13 +68,9 @@ unsigned XCoreRegisterInfo::getNumArgRegs(const MachineFunction *MF) return array_lengthof(XCore_ArgRegs); } -bool XCoreRegisterInfo::needsFrameMoves(const MachineFunction &MF) -{ - const MachineFrameInfo *MFI = MF.getFrameInfo(); - MachineModuleInfo *MMI = MFI->getMachineModuleInfo(); - return (MMI && MMI->hasDebugInfo()) || - !MF.getFunction()->doesNotThrow() || - UnwindTablesMandatory; +bool XCoreRegisterInfo::needsFrameMoves(const MachineFunction &MF) { + return MF.getMMI().hasDebugInfo() || + MF.getFunction()->needsUnwindTableEntry(); } const unsigned* XCoreRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) @@ -84,25 +83,15 @@ const unsigned* XCoreRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) return CalleeSavedRegs; } -const TargetRegisterClass* const* -XCoreRegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const { - static const TargetRegisterClass * const CalleeSavedRegClasses[] = { - XCore::GRRegsRegisterClass, XCore::GRRegsRegisterClass, - XCore::GRRegsRegisterClass, XCore::GRRegsRegisterClass, - XCore::GRRegsRegisterClass, XCore::GRRegsRegisterClass, - XCore::GRRegsRegisterClass, XCore::RRegsRegisterClass, - 0 - }; - return CalleeSavedRegClasses; -} - BitVector XCoreRegisterInfo::getReservedRegs(const MachineFunction &MF) const { BitVector Reserved(getNumRegs()); + const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering(); + Reserved.set(XCore::CP); Reserved.set(XCore::DP); Reserved.set(XCore::SP); Reserved.set(XCore::LR); - if (hasFP(MF)) { + if (TFI->hasFP(MF)) { Reserved.set(XCore::R10); } return Reserved; @@ -110,12 +99,15 @@ BitVector XCoreRegisterInfo::getReservedRegs(const MachineFunction &MF) const { bool XCoreRegisterInfo::requiresRegisterScavenging(const MachineFunction &MF) const { + const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering(); + // TODO can we estimate stack size? - return hasFP(MF); + return TFI->hasFP(MF); } -bool XCoreRegisterInfo::hasFP(const MachineFunction &MF) const { - return NoFramePointerElim || MF.getFrameInfo()->hasVarSizedObjects(); +bool +XCoreRegisterInfo::useFPForScavengingIndex(const MachineFunction &MF) const { + return false; } // This function eliminates ADJCALLSTACKDOWN, @@ -123,7 +115,9 @@ bool XCoreRegisterInfo::hasFP(const MachineFunction &MF) const { void XCoreRegisterInfo:: eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const { - if (!hasReservedCallFrame(MF)) { + const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering(); + + if (!TFI->hasReservedCallFrame(MF)) { // Turn the adjcallstackdown instruction into 'extsp ' and the // adjcallstackup instruction into 'ldaw sp, sp[]' MachineInstr *Old = I; @@ -132,19 +126,20 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, // We need to keep the stack aligned properly. To do this, we round the // amount of space needed for the outgoing arguments up to the next // alignment boundary. - unsigned Align = MF.getTarget().getFrameInfo()->getStackAlignment(); + unsigned Align = TFI->getStackAlignment(); Amount = (Amount+Align-1)/Align*Align; assert(Amount%4 == 0); Amount /= 4; - + bool isU6 = isImmU6(Amount); - if (!isU6 && !isImmU16(Amount)) { // FIX could emit multiple instructions in this case. - cerr << "eliminateCallFramePseudoInstr size too big: " - << Amount << "\n"; - abort(); +#ifndef NDEBUG + errs() << "eliminateCallFramePseudoInstr size too big: " + << Amount << "\n"; +#endif + llvm_unreachable(0); } MachineInstr *New; @@ -167,8 +162,9 @@ eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, MBB.erase(I); } -void XCoreRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, - int SPAdj, RegScavenger *RS) const { +void +XCoreRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, + int SPAdj, RegScavenger *RS) const { assert(SPAdj == 0 && "Unexpected"); MachineInstr &MI = *II; DebugLoc dl = MI.getDebugLoc(); @@ -183,35 +179,43 @@ void XCoreRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, int FrameIndex = FrameOp.getIndex(); MachineFunction &MF = *MI.getParent()->getParent(); + const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering(); int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex); int StackSize = MF.getFrameInfo()->getStackSize(); #ifndef NDEBUG - DOUT << "\nFunction : " << MF.getFunction()->getName() << "\n"; - DOUT << "<--------->\n"; - MI.print(DOUT); - DOUT << "FrameIndex : " << FrameIndex << "\n"; - DOUT << "FrameOffset : " << Offset << "\n"; - DOUT << "StackSize : " << StackSize << "\n"; + DEBUG(errs() << "\nFunction : " + << MF.getFunction()->getName() << "\n"); + DEBUG(errs() << "<--------->\n"); + DEBUG(MI.print(errs())); + DEBUG(errs() << "FrameIndex : " << FrameIndex << "\n"); + DEBUG(errs() << "FrameOffset : " << Offset << "\n"); + DEBUG(errs() << "StackSize : " << StackSize << "\n"); #endif Offset += StackSize; - + + unsigned FrameReg = getFrameRegister(MF); + + // Special handling of DBG_VALUE instructions. + if (MI.isDebugValue()) { + MI.getOperand(i).ChangeToRegister(FrameReg, false /*isDef*/); + MI.getOperand(i+1).ChangeToImmediate(Offset); + return; + } + // fold constant into offset. Offset += MI.getOperand(i + 1).getImm(); MI.getOperand(i + 1).ChangeToImmediate(0); assert(Offset%4 == 0 && "Misaligned stack offset"); - #ifndef NDEBUG - DOUT << "Offset : " << Offset << "\n"; - DOUT << "<--------->\n"; - #endif + DEBUG(errs() << "Offset : " << Offset << "\n" << "<--------->\n"); Offset/=4; - bool FP = hasFP(MF); - + bool FP = TFI->hasFP(MF); + unsigned Reg = MI.getOperand(0).getReg(); bool isKill = MI.getOpcode() == XCore::STWFI && MI.getOperand(0).isKill(); @@ -222,66 +226,61 @@ void XCoreRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, if (FP) { bool isUs = isImmUs(Offset); - unsigned FramePtr = XCore::R10; - MachineInstr *New = 0; if (!isUs) { - if (!RS) { - cerr << "eliminateFrameIndex Frame size too big: " << Offset << "\n"; - abort(); - } + if (!RS) + report_fatal_error("eliminateFrameIndex Frame size too big: " + + Twine(Offset)); unsigned ScratchReg = RS->scavengeRegister(XCore::GRRegsRegisterClass, II, SPAdj); loadConstant(MBB, II, ScratchReg, Offset, dl); switch (MI.getOpcode()) { case XCore::LDWFI: - New = BuildMI(MBB, II, dl, TII.get(XCore::LDW_3r), Reg) - .addReg(FramePtr) - .addReg(ScratchReg, false, false, true); + BuildMI(MBB, II, dl, TII.get(XCore::LDW_3r), Reg) + .addReg(FrameReg) + .addReg(ScratchReg, RegState::Kill); break; case XCore::STWFI: - New = BuildMI(MBB, II, dl, TII.get(XCore::STW_3r)) - .addReg(Reg, false, false, isKill) - .addReg(FramePtr) - .addReg(ScratchReg, false, false, true); + BuildMI(MBB, II, dl, TII.get(XCore::STW_3r)) + .addReg(Reg, getKillRegState(isKill)) + .addReg(FrameReg) + .addReg(ScratchReg, RegState::Kill); break; case XCore::LDAWFI: - New = BuildMI(MBB, II, dl, TII.get(XCore::LDAWF_l3r), Reg) - .addReg(FramePtr) - .addReg(ScratchReg, false, false, true); + BuildMI(MBB, II, dl, TII.get(XCore::LDAWF_l3r), Reg) + .addReg(FrameReg) + .addReg(ScratchReg, RegState::Kill); break; default: - assert(0 && "Unexpected Opcode\n"); + llvm_unreachable("Unexpected Opcode"); } } else { switch (MI.getOpcode()) { case XCore::LDWFI: - New = BuildMI(MBB, II, dl, TII.get(XCore::LDW_2rus), Reg) - .addReg(FramePtr) + BuildMI(MBB, II, dl, TII.get(XCore::LDW_2rus), Reg) + .addReg(FrameReg) .addImm(Offset); break; case XCore::STWFI: - New = BuildMI(MBB, II, dl, TII.get(XCore::STW_2rus)) - .addReg(Reg, false, false, isKill) - .addReg(FramePtr) + BuildMI(MBB, II, dl, TII.get(XCore::STW_2rus)) + .addReg(Reg, getKillRegState(isKill)) + .addReg(FrameReg) .addImm(Offset); break; case XCore::LDAWFI: - New = BuildMI(MBB, II, dl, TII.get(XCore::LDAWF_l2rus), Reg) - .addReg(FramePtr) + BuildMI(MBB, II, dl, TII.get(XCore::LDAWF_l2rus), Reg) + .addReg(FrameReg) .addImm(Offset); break; default: - assert(0 && "Unexpected Opcode\n"); + llvm_unreachable("Unexpected Opcode"); } } } else { bool isU6 = isImmU6(Offset); - if (!isU6 && !isImmU16(Offset)) { - // FIXME could make this work for LDWSP, LDAWSP. - cerr << "eliminateFrameIndex Frame size too big: " << Offset << "\n"; - abort(); - } + if (!isU6 && !isImmU16(Offset)) + report_fatal_error("eliminateFrameIndex Frame size too big: " + + Twine(Offset)); switch (MI.getOpcode()) { int NewOpcode; @@ -293,7 +292,7 @@ void XCoreRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, case XCore::STWFI: NewOpcode = (isU6) ? XCore::STWSP_ru6 : XCore::STWSP_lru6; BuildMI(MBB, II, dl, TII.get(NewOpcode)) - .addReg(Reg, false, false, isKill) + .addReg(Reg, getKillRegState(isKill)) .addImm(Offset); break; case XCore::LDAWFI: @@ -302,296 +301,27 @@ void XCoreRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II, .addImm(Offset); break; default: - assert(0 && "Unexpected Opcode\n"); + llvm_unreachable("Unexpected Opcode"); } } // Erase old instruction. MBB.erase(II); } -void -XCoreRegisterInfo::processFunctionBeforeCalleeSavedScan(MachineFunction &MF, - RegScavenger *RS) const { - MachineFrameInfo *MFI = MF.getFrameInfo(); - bool LRUsed = MF.getRegInfo().isPhysRegUsed(XCore::LR); - const TargetRegisterClass *RC = XCore::GRRegsRegisterClass; - XCoreFunctionInfo *XFI = MF.getInfo(); - if (LRUsed) { - MF.getRegInfo().setPhysRegUnused(XCore::LR); - - bool isVarArg = MF.getFunction()->isVarArg(); - int FrameIdx; - if (! isVarArg) { - // A fixed offset of 0 allows us to save / restore LR using entsp / retsp. - FrameIdx = MFI->CreateFixedObject(RC->getSize(), 0); - } else { - FrameIdx = MFI->CreateStackObject(RC->getSize(), RC->getAlignment()); - } - XFI->setUsesLR(FrameIdx); - XFI->setLRSpillSlot(FrameIdx); - } - if (requiresRegisterScavenging(MF)) { - // Reserve a slot close to SP or frame pointer. - RS->setScavengingFrameIndex(MFI->CreateStackObject(RC->getSize(), - RC->getAlignment())); - } - if (hasFP(MF)) { - // A callee save register is used to hold the FP. - // This needs saving / restoring in the epilogue / prologue. - XFI->setFPSpillSlot(MFI->CreateStackObject(RC->getSize(), - RC->getAlignment())); - } -} - -void XCoreRegisterInfo:: -processFunctionBeforeFrameFinalized(MachineFunction &MF) const { - -} - void XCoreRegisterInfo:: loadConstant(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, unsigned DstReg, int64_t Value, DebugLoc dl) const { // TODO use mkmsk if possible. if (!isImmU16(Value)) { // TODO use constant pool. - cerr << "loadConstant value too big " << Value << "\n"; - abort(); + report_fatal_error("loadConstant value too big " + Twine(Value)); } int Opcode = isImmU6(Value) ? XCore::LDC_ru6 : XCore::LDC_lru6; BuildMI(MBB, I, dl, TII.get(Opcode), DstReg).addImm(Value); } -void XCoreRegisterInfo:: -storeToStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, - unsigned SrcReg, int Offset, DebugLoc dl) const { - assert(Offset%4 == 0 && "Misaligned stack offset"); - Offset/=4; - bool isU6 = isImmU6(Offset); - if (!isU6 && !isImmU16(Offset)) { - cerr << "storeToStack offset too big " << Offset << "\n"; - abort(); - } - int Opcode = isU6 ? XCore::STWSP_ru6 : XCore::STWSP_lru6; - BuildMI(MBB, I, dl, TII.get(Opcode)) - .addReg(SrcReg) - .addImm(Offset); -} +unsigned XCoreRegisterInfo::getFrameRegister(const MachineFunction &MF) const { + const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering(); -void XCoreRegisterInfo:: -loadFromStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, - unsigned DstReg, int Offset, DebugLoc dl) const { - assert(Offset%4 == 0 && "Misaligned stack offset"); - Offset/=4; - bool isU6 = isImmU6(Offset); - if (!isU6 && !isImmU16(Offset)) { - cerr << "loadFromStack offset too big " << Offset << "\n"; - abort(); - } - int Opcode = isU6 ? XCore::LDWSP_ru6 : XCore::LDWSP_lru6; - BuildMI(MBB, I, dl, TII.get(Opcode), DstReg) - .addImm(Offset); + return TFI->hasFP(MF) ? XCore::R10 : XCore::SP; } - -void XCoreRegisterInfo::emitPrologue(MachineFunction &MF) const { - MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB - MachineBasicBlock::iterator MBBI = MBB.begin(); - MachineFrameInfo *MFI = MF.getFrameInfo(); - MachineModuleInfo *MMI = MFI->getMachineModuleInfo(); - XCoreFunctionInfo *XFI = MF.getInfo(); - DebugLoc dl = DebugLoc::getUnknownLoc(); - - bool FP = hasFP(MF); - - // Work out frame sizes. - int FrameSize = MFI->getStackSize(); - - assert(FrameSize%4 == 0 && "Misaligned frame size"); - - FrameSize/=4; - - bool isU6 = isImmU6(FrameSize); - - if (!isU6 && !isImmU16(FrameSize)) { - // FIXME could emit multiple instructions. - cerr << "emitPrologue Frame size too big: " << FrameSize << "\n"; - abort(); - } - bool emitFrameMoves = needsFrameMoves(MF); - - // Do we need to allocate space on the stack? - if (FrameSize) { - bool saveLR = XFI->getUsesLR(); - bool LRSavedOnEntry = false; - int Opcode; - if (saveLR && (MFI->getObjectOffset(XFI->getLRSpillSlot()) == 0)) { - Opcode = (isU6) ? XCore::ENTSP_u6 : XCore::ENTSP_lu6; - MBB.addLiveIn(XCore::LR); - saveLR = false; - LRSavedOnEntry = true; - } else { - Opcode = (isU6) ? XCore::EXTSP_u6 : XCore::EXTSP_lu6; - } - BuildMI(MBB, MBBI, dl, TII.get(Opcode)).addImm(FrameSize); - - if (emitFrameMoves) { - std::vector &Moves = MMI->getFrameMoves(); - - // Show update of SP. - unsigned FrameLabelId = MMI->NextLabelID(); - BuildMI(MBB, MBBI, dl, TII.get(XCore::DBG_LABEL)).addImm(FrameLabelId); - - MachineLocation SPDst(MachineLocation::VirtualFP); - MachineLocation SPSrc(MachineLocation::VirtualFP, -FrameSize * 4); - Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc)); - - if (LRSavedOnEntry) { - MachineLocation CSDst(MachineLocation::VirtualFP, 0); - MachineLocation CSSrc(XCore::LR); - Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc)); - } - } - if (saveLR) { - int LRSpillOffset = MFI->getObjectOffset(XFI->getLRSpillSlot()); - storeToStack(MBB, MBBI, XCore::LR, LRSpillOffset + FrameSize*4, dl); - MBB.addLiveIn(XCore::LR); - - if (emitFrameMoves) { - unsigned SaveLRLabelId = MMI->NextLabelID(); - BuildMI(MBB, MBBI, dl, TII.get(XCore::DBG_LABEL)).addImm(SaveLRLabelId); - MachineLocation CSDst(MachineLocation::VirtualFP, LRSpillOffset); - MachineLocation CSSrc(XCore::LR); - MMI->getFrameMoves().push_back(MachineMove(SaveLRLabelId, - CSDst, CSSrc)); - } - } - } - - if (FP) { - // Save R10 to the stack. - int FPSpillOffset = MFI->getObjectOffset(XFI->getFPSpillSlot()); - storeToStack(MBB, MBBI, XCore::R10, FPSpillOffset + FrameSize*4, dl); - // R10 is live-in. It is killed at the spill. - MBB.addLiveIn(XCore::R10); - if (emitFrameMoves) { - unsigned SaveR10LabelId = MMI->NextLabelID(); - BuildMI(MBB, MBBI, dl, TII.get(XCore::DBG_LABEL)).addImm(SaveR10LabelId); - MachineLocation CSDst(MachineLocation::VirtualFP, FPSpillOffset); - MachineLocation CSSrc(XCore::R10); - MMI->getFrameMoves().push_back(MachineMove(SaveR10LabelId, - CSDst, CSSrc)); - } - // Set the FP from the SP. - unsigned FramePtr = XCore::R10; - BuildMI(MBB, MBBI, dl, TII.get(XCore::LDAWSP_ru6), FramePtr) - .addImm(0); - if (emitFrameMoves) { - // Show FP is now valid. - unsigned FrameLabelId = MMI->NextLabelID(); - BuildMI(MBB, MBBI, dl, TII.get(XCore::DBG_LABEL)).addImm(FrameLabelId); - MachineLocation SPDst(FramePtr); - MachineLocation SPSrc(MachineLocation::VirtualFP); - MMI->getFrameMoves().push_back(MachineMove(FrameLabelId, SPDst, SPSrc)); - } - } - - if (emitFrameMoves) { - // Frame moves for callee saved. - std::vector &Moves = MMI->getFrameMoves(); - std::vector >&SpillLabels = - XFI->getSpillLabels(); - for (unsigned I = 0, E = SpillLabels.size(); I != E; ++I) { - unsigned SpillLabel = SpillLabels[I].first; - CalleeSavedInfo &CSI = SpillLabels[I].second; - int Offset = MFI->getObjectOffset(CSI.getFrameIdx()); - unsigned Reg = CSI.getReg(); - MachineLocation CSDst(MachineLocation::VirtualFP, Offset); - MachineLocation CSSrc(Reg); - Moves.push_back(MachineMove(SpillLabel, CSDst, CSSrc)); - } - } -} - -void XCoreRegisterInfo::emitEpilogue(MachineFunction &MF, - MachineBasicBlock &MBB) const { - MachineFrameInfo *MFI = MF.getFrameInfo(); - MachineBasicBlock::iterator MBBI = prior(MBB.end()); - DebugLoc dl = DebugLoc::getUnknownLoc(); - - bool FP = hasFP(MF); - - if (FP) { - // Restore the stack pointer. - unsigned FramePtr = XCore::R10; - BuildMI(MBB, MBBI, dl, TII.get(XCore::SETSP_1r)) - .addReg(FramePtr); - } - - // Work out frame sizes. - int FrameSize = MFI->getStackSize(); - - assert(FrameSize%4 == 0 && "Misaligned frame size"); - - FrameSize/=4; - - bool isU6 = isImmU6(FrameSize); - - if (!isU6 && !isImmU16(FrameSize)) { - // FIXME could emit multiple instructions. - cerr << "emitEpilogue Frame size too big: " << FrameSize << "\n"; - abort(); - } - - if (FrameSize) { - XCoreFunctionInfo *XFI = MF.getInfo(); - - if (FP) { - // Restore R10 - int FPSpillOffset = MFI->getObjectOffset(XFI->getFPSpillSlot()); - FPSpillOffset += FrameSize*4; - loadFromStack(MBB, MBBI, XCore::R10, FPSpillOffset, dl); - } - bool restoreLR = XFI->getUsesLR(); - if (restoreLR && MFI->getObjectOffset(XFI->getLRSpillSlot()) != 0) { - int LRSpillOffset = MFI->getObjectOffset(XFI->getLRSpillSlot()); - LRSpillOffset += FrameSize*4; - loadFromStack(MBB, MBBI, XCore::LR, LRSpillOffset, dl); - restoreLR = false; - } - if (restoreLR) { - // Fold prologue into return instruction - assert(MBBI->getOpcode() == XCore::RETSP_u6 - || MBBI->getOpcode() == XCore::RETSP_lu6); - int Opcode = (isU6) ? XCore::RETSP_u6 : XCore::RETSP_lu6; - BuildMI(MBB, MBBI, dl, TII.get(Opcode)).addImm(FrameSize); - MBB.erase(MBBI); - } else { - int Opcode = (isU6) ? XCore::LDAWSP_ru6_RRegs : XCore::LDAWSP_lru6_RRegs; - BuildMI(MBB, MBBI, dl, TII.get(Opcode), XCore::SP).addImm(FrameSize); - } - } -} - -int XCoreRegisterInfo::getDwarfRegNum(unsigned RegNum, bool isEH) const { - return XCoreGenRegisterInfo::getDwarfRegNumFull(RegNum, 0); -} - -unsigned XCoreRegisterInfo::getFrameRegister(MachineFunction &MF) const { - bool FP = hasFP(MF); - - return FP ? XCore::R10 : XCore::SP; -} - -unsigned XCoreRegisterInfo::getRARegister() const { - return XCore::LR; -} - -void XCoreRegisterInfo::getInitialFrameState(std::vector &Moves) - const { - // Initial state of the frame pointer is SP. - MachineLocation Dst(MachineLocation::VirtualFP); - MachineLocation Src(XCore::SP, 0); - Moves.push_back(MachineMove(0, Dst, Src)); -} - -#include "XCoreGenRegisterInfo.inc" -