#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"
using namespace llvm;
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() ||
+bool XCoreRegisterInfo::needsFrameMoves(const MachineFunction &MF) {
+ return MF.getMMI().hasDebugInfo() || !MF.getFunction()->doesNotThrow() ||
UnwindTablesMandatory;
}
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());
Reserved.set(XCore::CP);
}
bool XCoreRegisterInfo::hasFP(const MachineFunction &MF) const {
- return NoFramePointerElim || MF.getFrameInfo()->hasVarSizedObjects();
+ return DisableFramePointerElim(MF) || MF.getFrameInfo()->hasVarSizedObjects();
}
// This function eliminates ADJCALLSTACKDOWN,
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;
if (Old->getOpcode() == XCore::ADJCALLSTACKDOWN) {
int Opcode = isU6 ? XCore::EXTSP_u6 : XCore::EXTSP_lu6;
- New=BuildMI(MF, TII.get(Opcode))
+ New=BuildMI(MF, Old->getDebugLoc(), TII.get(Opcode))
.addImm(Amount);
} else {
assert(Old->getOpcode() == XCore::ADJCALLSTACKUP);
int Opcode = isU6 ? XCore::LDAWSP_ru6_RRegs : XCore::LDAWSP_lru6_RRegs;
- New=BuildMI(MF, TII.get(Opcode), XCore::SP)
+ New=BuildMI(MF, Old->getDebugLoc(), TII.get(Opcode), XCore::SP)
.addImm(Amount);
}
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();
unsigned i = 0;
while (!MI.getOperand(i).isFI()) {
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;
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);
+ unsigned Reg = MI.getOperand(0).getReg();
+ bool isKill = MI.getOpcode() == XCore::STWFI && MI.getOperand(0).isKill();
+
+ assert(XCore::GRRegsRegisterClass->contains(Reg) &&
+ "Unexpected register operand");
+
+ MachineBasicBlock &MBB = *MI.getParent();
+
if (FP) {
bool isUs = isImmUs(Offset);
- MachineBasicBlock &MBB = *MI.getParent();
unsigned FramePtr = XCore::R10;
- unsigned Reg = MI.getOperand(0).getReg();
- bool isKill = MI.getOperand(0).isKill();
- if (Reg == XCore::LR) {
- // The LR should have been save in the prologue.
- cerr << "saving LR to FP unimplemented\n";
- abort();
- }
-
- 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);
+ loadConstant(MBB, II, ScratchReg, Offset, dl);
switch (MI.getOpcode()) {
- case XCore::LDWSP_lru6:
- New = BuildMI(MBB, II, TII.get(XCore::LDW_3r), Reg)
+ case XCore::LDWFI:
+ BuildMI(MBB, II, dl, TII.get(XCore::LDW_3r), Reg)
.addReg(FramePtr)
- .addReg(ScratchReg, false, false, true);
+ .addReg(ScratchReg, RegState::Kill);
break;
- case XCore::STWSP_lru6:
- New = BuildMI(MBB, II, TII.get(XCore::STW_3r))
- .addReg(Reg, false, false, isKill)
+ case XCore::STWFI:
+ BuildMI(MBB, II, dl, TII.get(XCore::STW_3r))
+ .addReg(Reg, getKillRegState(isKill))
.addReg(FramePtr)
- .addReg(ScratchReg, false, false, true);
+ .addReg(ScratchReg, RegState::Kill);
break;
- case XCore::LDAWSP_lru6:
- New = BuildMI(MBB, II, TII.get(XCore::LDAWF_l3r), Reg)
+ case XCore::LDAWFI:
+ BuildMI(MBB, II, dl, TII.get(XCore::LDAWF_l3r), Reg)
.addReg(FramePtr)
- .addReg(ScratchReg, false, false, true);
+ .addReg(ScratchReg, RegState::Kill);
break;
default:
- assert(0 && "Unexpected Opcode\n");
+ llvm_unreachable("Unexpected Opcode");
}
} else {
switch (MI.getOpcode()) {
- case XCore::LDWSP_lru6:
- New = BuildMI(MBB, II, TII.get(XCore::LDW_2rus), Reg)
+ case XCore::LDWFI:
+ BuildMI(MBB, II, dl, TII.get(XCore::LDW_2rus), Reg)
.addReg(FramePtr)
.addImm(Offset);
break;
- case XCore::STWSP_lru6:
- New = BuildMI(MBB, II, TII.get(XCore::STW_2rus))
- .addReg(Reg, false, false, isKill)
+ case XCore::STWFI:
+ BuildMI(MBB, II, dl, TII.get(XCore::STW_2rus))
+ .addReg(Reg, getKillRegState(isKill))
.addReg(FramePtr)
.addImm(Offset);
break;
- case XCore::LDAWSP_lru6:
- New = BuildMI(MBB, II, TII.get(XCore::LDAWF_l2rus), Reg)
+ case XCore::LDAWFI:
+ BuildMI(MBB, II, dl, TII.get(XCore::LDAWF_l2rus), Reg)
.addReg(FramePtr)
.addImm(Offset);
break;
default:
- assert(0 && "Unexpected Opcode\n");
+ llvm_unreachable("Unexpected Opcode");
}
}
-
- // Erase old instruction.
- MBB.erase(II);
} 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();
- }
-
- int NewOpcode = MI.getOpcode();
+ if (!isU6 && !isImmU16(Offset))
+ report_fatal_error("eliminateFrameIndex Frame size too big: " +
+ Twine(Offset));
- switch (NewOpcode) {
- case XCore::LDWSP_lru6:
+ switch (MI.getOpcode()) {
+ int NewOpcode;
+ case XCore::LDWFI:
NewOpcode = (isU6) ? XCore::LDWSP_ru6 : XCore::LDWSP_lru6;
+ BuildMI(MBB, II, dl, TII.get(NewOpcode), Reg)
+ .addImm(Offset);
break;
- case XCore::STWSP_lru6:
+ case XCore::STWFI:
NewOpcode = (isU6) ? XCore::STWSP_ru6 : XCore::STWSP_lru6;
+ BuildMI(MBB, II, dl, TII.get(NewOpcode))
+ .addReg(Reg, getKillRegState(isKill))
+ .addImm(Offset);
break;
- case XCore::LDAWSP_lru6:
+ case XCore::LDAWFI:
NewOpcode = (isU6) ? XCore::LDAWSP_ru6 : XCore::LDAWSP_lru6;
+ BuildMI(MBB, II, dl, TII.get(NewOpcode), Reg)
+ .addImm(Offset);
break;
default:
- assert(0 && "Unexpected Opcode\n");
+ llvm_unreachable("Unexpected Opcode");
}
-
- MI.setDesc(TII.get(NewOpcode));
- FrameOp.ChangeToImmediate(Offset);
}
+ // Erase old instruction.
+ MBB.erase(II);
}
void
int FrameIdx;
if (! isVarArg) {
// A fixed offset of 0 allows us to save / restore LR using entsp / retsp.
- FrameIdx = MFI->CreateFixedObject(RC->getSize(), 0);
+ FrameIdx = MFI->CreateFixedObject(RC->getSize(), 0, true);
} else {
- FrameIdx = MFI->CreateStackObject(RC->getSize(), RC->getAlignment());
+ FrameIdx = MFI->CreateStackObject(RC->getSize(), RC->getAlignment(),
+ false);
}
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()));
+ RC->getAlignment(),
+ false));
}
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()));
+ RC->getAlignment(),
+ false));
}
}
void XCoreRegisterInfo::
loadConstant(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
- unsigned DstReg, int64_t Value) const {
+ 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, TII.get(Opcode), DstReg).addImm(Value);
+ BuildMI(MBB, I, dl, TII.get(Opcode), DstReg).addImm(Value);
}
void XCoreRegisterInfo::
storeToStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
- unsigned SrcReg, int Offset) const {
+ 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();
- }
+ if (!isU6 && !isImmU16(Offset))
+ report_fatal_error("storeToStack offset too big " + Twine(Offset));
int Opcode = isU6 ? XCore::STWSP_ru6 : XCore::STWSP_lru6;
- BuildMI(MBB, I, TII.get(Opcode))
+ BuildMI(MBB, I, dl, TII.get(Opcode))
.addReg(SrcReg)
- .addImm(Offset)
- .addImm(0);
+ .addImm(Offset);
}
void XCoreRegisterInfo::
loadFromStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
- unsigned DstReg, int Offset) const {
+ 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 << "storeToStack offset too big " << Offset << "\n";
- abort();
- }
+ if (!isU6 && !isImmU16(Offset))
+ report_fatal_error("loadFromStack offset too big " + Twine(Offset));
int Opcode = isU6 ? XCore::LDWSP_ru6 : XCore::LDWSP_lru6;
- BuildMI(MBB, I, TII.get(Opcode), DstReg)
- .addImm(Offset)
- .addImm(0);
+ BuildMI(MBB, I, dl, TII.get(Opcode), DstReg)
+ .addImm(Offset);
}
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();
+ MachineModuleInfo *MMI = &MF.getMMI();
XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
+ DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
bool FP = hasFP(MF);
if (!isU6 && !isImmU16(FrameSize)) {
// FIXME could emit multiple instructions.
- cerr << "emitPrologue Frame size too big: " << FrameSize << "\n";
- abort();
+ report_fatal_error("emitPrologue Frame size too big: " + Twine(FrameSize));
}
bool emitFrameMoves = needsFrameMoves(MF);
} else {
Opcode = (isU6) ? XCore::EXTSP_u6 : XCore::EXTSP_lu6;
}
- BuildMI(MBB, MBBI, TII.get(Opcode)).addImm(FrameSize);
+ BuildMI(MBB, MBBI, dl, TII.get(Opcode)).addImm(FrameSize);
if (emitFrameMoves) {
std::vector<MachineMove> &Moves = MMI->getFrameMoves();
// Show update of SP.
- unsigned FrameLabelId = MMI->NextLabelID();
- BuildMI(MBB, MBBI, TII.get(XCore::DBG_LABEL)).addImm(FrameLabelId);
+ MCSymbol *FrameLabel = MMI->getContext().CreateTempSymbol();
+ BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(FrameLabel);
MachineLocation SPDst(MachineLocation::VirtualFP);
MachineLocation SPSrc(MachineLocation::VirtualFP, -FrameSize * 4);
- Moves.push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
+ Moves.push_back(MachineMove(FrameLabel, SPDst, SPSrc));
if (LRSavedOnEntry) {
MachineLocation CSDst(MachineLocation::VirtualFP, 0);
MachineLocation CSSrc(XCore::LR);
- Moves.push_back(MachineMove(FrameLabelId, CSDst, CSSrc));
+ Moves.push_back(MachineMove(FrameLabel, CSDst, CSSrc));
}
}
if (saveLR) {
int LRSpillOffset = MFI->getObjectOffset(XFI->getLRSpillSlot());
- storeToStack(MBB, MBBI, XCore::LR, LRSpillOffset + FrameSize*4);
+ storeToStack(MBB, MBBI, XCore::LR, LRSpillOffset + FrameSize*4, dl);
MBB.addLiveIn(XCore::LR);
if (emitFrameMoves) {
- unsigned SaveLRLabelId = MMI->NextLabelID();
- BuildMI(MBB, MBBI, TII.get(XCore::DBG_LABEL)).addImm(SaveLRLabelId);
+ MCSymbol *SaveLRLabel = MMI->getContext().CreateTempSymbol();
+ BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(SaveLRLabel);
MachineLocation CSDst(MachineLocation::VirtualFP, LRSpillOffset);
MachineLocation CSSrc(XCore::LR);
- MMI->getFrameMoves().push_back(MachineMove(SaveLRLabelId,
- CSDst, CSSrc));
+ MMI->getFrameMoves().push_back(MachineMove(SaveLRLabel, CSDst, CSSrc));
}
}
}
if (FP) {
// Save R10 to the stack.
int FPSpillOffset = MFI->getObjectOffset(XFI->getFPSpillSlot());
- storeToStack(MBB, MBBI, XCore::R10, FPSpillOffset + FrameSize*4);
+ 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, TII.get(XCore::DBG_LABEL)).addImm(SaveR10LabelId);
+ MCSymbol *SaveR10Label = MMI->getContext().CreateTempSymbol();
+ BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(SaveR10Label);
MachineLocation CSDst(MachineLocation::VirtualFP, FPSpillOffset);
MachineLocation CSSrc(XCore::R10);
- MMI->getFrameMoves().push_back(MachineMove(SaveR10LabelId,
- CSDst, CSSrc));
+ MMI->getFrameMoves().push_back(MachineMove(SaveR10Label, CSDst, CSSrc));
}
// Set the FP from the SP.
unsigned FramePtr = XCore::R10;
- BuildMI(MBB, MBBI, TII.get(XCore::LDAWSP_ru6), FramePtr)
- .addImm(0)
+ 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, TII.get(XCore::DBG_LABEL)).addImm(FrameLabelId);
+ MCSymbol *FrameLabel = MMI->getContext().CreateTempSymbol();
+ BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(FrameLabel);
MachineLocation SPDst(FramePtr);
MachineLocation SPSrc(MachineLocation::VirtualFP);
- MMI->getFrameMoves().push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
+ MMI->getFrameMoves().push_back(MachineMove(FrameLabel, SPDst, SPSrc));
}
}
if (emitFrameMoves) {
// Frame moves for callee saved.
std::vector<MachineMove> &Moves = MMI->getFrameMoves();
- std::vector<std::pair<unsigned, CalleeSavedInfo> >&SpillLabels =
+ std::vector<std::pair<MCSymbol*, CalleeSavedInfo> >&SpillLabels =
XFI->getSpillLabels();
for (unsigned I = 0, E = SpillLabels.size(); I != E; ++I) {
- unsigned SpillLabel = SpillLabels[I].first;
+ MCSymbol *SpillLabel = SpillLabels[I].first;
CalleeSavedInfo &CSI = SpillLabels[I].second;
int Offset = MFI->getObjectOffset(CSI.getFrameIdx());
unsigned Reg = CSI.getReg();
MachineBasicBlock &MBB) const {
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineBasicBlock::iterator MBBI = prior(MBB.end());
+ DebugLoc dl = MBBI->getDebugLoc();
bool FP = hasFP(MF);
if (FP) {
// Restore the stack pointer.
unsigned FramePtr = XCore::R10;
- BuildMI(MBB, MBBI, TII.get(XCore::SETSP_1r))
+ BuildMI(MBB, MBBI, dl, TII.get(XCore::SETSP_1r))
.addReg(FramePtr);
}
if (!isU6 && !isImmU16(FrameSize)) {
// FIXME could emit multiple instructions.
- cerr << "emitEpilogue Frame size too big: " << FrameSize << "\n";
- abort();
+ report_fatal_error("emitEpilogue Frame size too big: " + Twine(FrameSize));
}
if (FrameSize) {
// Restore R10
int FPSpillOffset = MFI->getObjectOffset(XFI->getFPSpillSlot());
FPSpillOffset += FrameSize*4;
- loadFromStack(MBB, MBBI, XCore::R10, FPSpillOffset);
+ 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);
+ loadFromStack(MBB, MBBI, XCore::LR, LRSpillOffset, dl);
restoreLR = false;
}
if (restoreLR) {
assert(MBBI->getOpcode() == XCore::RETSP_u6
|| MBBI->getOpcode() == XCore::RETSP_lu6);
int Opcode = (isU6) ? XCore::RETSP_u6 : XCore::RETSP_lu6;
- BuildMI(MBB, MBBI, TII.get(Opcode)).addImm(FrameSize);
+ 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, TII.get(Opcode), XCore::SP).addImm(FrameSize);
+ BuildMI(MBB, MBBI, dl, TII.get(Opcode), XCore::SP).addImm(FrameSize);
}
}
}
return XCoreGenRegisterInfo::getDwarfRegNumFull(RegNum, 0);
}
-unsigned XCoreRegisterInfo::getFrameRegister(MachineFunction &MF) const {
+unsigned XCoreRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
bool FP = hasFP(MF);
return FP ? XCore::R10 : XCore::SP;
projects / oota-llvm.git / blobdiff