void XCoreFrameInfo::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineBasicBlock::iterator MBBI = prior(MBB.end());
const XCoreInstrInfo &TII =
*static_cast<const XCoreInstrInfo*>(MF.getTarget().getInstrInfo());
DebugLoc dl = MBBI->getDebugLoc();
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.
report_fatal_error("emitEpilogue Frame size too big: " + Twine(FrameSize));
}
if (FrameSize) {
XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
if (FP) {
// Restore R10
int FPSpillOffset = MFI->getObjectOffset(XFI->getFPSpillSlot());
FPSpillOffset += FrameSize*4;
loadFromStack(MBB, MBBI, XCore::R10, FPSpillOffset, dl, TII);
}
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, TII);
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);
}
}
}
void XCoreFrameLowering::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineBasicBlock::iterator MBBI = MBB.getLastNonDebugInstr();
const XCoreInstrInfo &TII =
*static_cast<const XCoreInstrInfo*>(MF.getTarget().getInstrInfo());
XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
DebugLoc dl = MBBI->getDebugLoc();
// Work out frame sizes.
// We will adjust the SP in stages towards the final FrameSize.
int RemainingAdj = MFI->getStackSize();
assert(RemainingAdj%4 == 0 && "Misaligned frame size");
RemainingAdj /= 4;
bool restoreLR = XFI->getUsesLR();
bool UseRETSP = restoreLR && RemainingAdj
&& (MFI->getObjectOffset(XFI->getLRSpillSlot()) == 0);
if (UseRETSP)
restoreLR = false;
bool FP = hasFP(MF);
if (FP) // Restore the stack pointer.
BuildMI(MBB, MBBI, dl, TII.get(XCore::SETSP_1r)).addReg(FramePtr);
// If necessary, restore LR and FP from the stack, as we EXTSP.
SmallVector<std::pair<unsigned,int>,2> SpillList;
GetSpillList(SpillList, MFI, XFI, restoreLR, FP);
unsigned i = SpillList.size();
while (i--) {
unsigned SpilledReg = SpillList[i].first;
int SpillOffset = SpillList[i].second;
assert(SpillOffset % 4 == 0 && "Misaligned stack offset");
assert(SpillOffset <= 0 && "Unexpected positive stack offset");
int OffsetFromTop = - SpillOffset/4;
IfNeededLDAWSP(MBB, MBBI, dl, TII, OffsetFromTop, RemainingAdj);
int Offset = RemainingAdj - OffsetFromTop;
int Opcode = isImmU6(Offset) ? XCore::LDWSP_ru6 : XCore::LDWSP_lru6;
BuildMI(MBB, MBBI, dl, TII.get(Opcode), SpilledReg).addImm(Offset);
}
if (RemainingAdj) {
// Complete all but one of the remaining Stack adjustments.
IfNeededLDAWSP(MBB, MBBI, dl, TII, 0, RemainingAdj);
if (UseRETSP) {
// Fold prologue into return instruction
assert(MBBI->getOpcode() == XCore::RETSP_u6
|| MBBI->getOpcode() == XCore::RETSP_lu6);
int Opcode = isImmU6(RemainingAdj) ? XCore::RETSP_u6 : XCore::RETSP_lu6;
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, dl, TII.get(Opcode))
.addImm(RemainingAdj);
for (unsigned i = 3, e = MBBI->getNumOperands(); i < e; ++i)
MIB->addOperand(MBBI->getOperand(i)); // copy any variadic operands
MBB.erase(MBBI); // Erase the previous return instruction.
} else {
int Opcode = isImmU6(RemainingAdj) ? XCore::LDAWSP_ru6 :
XCore::LDAWSP_lru6;
BuildMI(MBB, MBBI, dl, TII.get(Opcode), XCore::SP).addImm(RemainingAdj);
// Don't erase the return instruction.
}
} // else Don't erase the return instruction.
}
void XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
MachineBasicBlock::iterator MBBI = MBB.begin();
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineModuleInfo *MMI = &MF.getMMI();
const MCRegisterInfo *MRI = MMI->getContext().getRegisterInfo();
const XCoreInstrInfo &TII =
*static_cast<const XCoreInstrInfo*>(MF.getTarget().getInstrInfo());
XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
if (MFI->getMaxAlignment() > getStackAlignment())
report_fatal_error("emitPrologue unsupported alignment: "
+ Twine(MFI->getMaxAlignment()));
const AttributeSet &PAL = MF.getFunction()->getAttributes();
if (PAL.hasAttrSomewhere(Attribute::Nest))
BuildMI(MBB, MBBI, dl, TII.get(XCore::LDWSP_ru6), XCore::R11).addImm(0);
// Work out frame sizes.
// We will adjust the SP in stages towards the final FrameSize.
assert(MFI->getStackSize()%4 == 0 && "Misaligned frame size");
const int FrameSize = MFI->getStackSize() / 4;
int Adjusted = 0;
bool saveLR = XFI->getUsesLR();
bool UseENTSP = saveLR && FrameSize
&& (MFI->getObjectOffset(XFI->getLRSpillSlot()) == 0);
if (UseENTSP)
saveLR = false;
bool FP = hasFP(MF);
bool emitFrameMoves = XCoreRegisterInfo::needsFrameMoves(MF);
if (UseENTSP) {
// Allocate space on the stack at the same time as saving LR.
Adjusted = (FrameSize > MaxImmU16) ? MaxImmU16 : FrameSize;
int Opcode = isImmU6(Adjusted) ? XCore::ENTSP_u6 : XCore::ENTSP_lu6;
BuildMI(MBB, MBBI, dl, TII.get(Opcode)).addImm(Adjusted);
MBB.addLiveIn(XCore::LR);
if (emitFrameMoves) {
EmitDefCfaOffset(MBB, MBBI, dl, TII, MMI, Adjusted*4);
unsigned DRegNum = MRI->getDwarfRegNum(XCore::LR, true);
EmitCfiOffset(MBB, MBBI, dl, TII, MMI, DRegNum, 0, NULL);
}
}
// If necessary, save LR and FP to the stack, as we EXTSP.
SmallVector<std::pair<unsigned,int>,2> SpillList;
GetSpillList(SpillList, MFI, XFI, saveLR, FP);
for (unsigned i = 0, e = SpillList.size(); i != e; ++i) {
unsigned SpillReg = SpillList[i].first;
int SpillOffset = SpillList[i].second;
assert(SpillOffset % 4 == 0 && "Misaligned stack offset");
assert(SpillOffset <= 0 && "Unexpected positive stack offset");
int OffsetFromTop = - SpillOffset/4;
IfNeededExtSP(MBB, MBBI, dl, TII, MMI, OffsetFromTop, Adjusted, FrameSize,
emitFrameMoves);
int Offset = Adjusted - OffsetFromTop;
int Opcode = isImmU6(Offset) ? XCore::STWSP_ru6 : XCore::STWSP_lru6;
BuildMI(MBB, MBBI, dl, TII.get(Opcode)).addReg(SpillReg).addImm(Offset);
MBB.addLiveIn(SpillReg);
if (emitFrameMoves) {
unsigned DRegNum = MRI->getDwarfRegNum(SpillReg, true);
EmitCfiOffset(MBB, MBBI, dl, TII, MMI, DRegNum, SpillOffset, NULL);
}
}
// Complete any remaining Stack adjustment.
IfNeededExtSP(MBB, MBBI, dl, TII, MMI, FrameSize, Adjusted, FrameSize,
emitFrameMoves);
assert(Adjusted==FrameSize && "IfNeededExtSP has not completed adjustment");
if (FP) {
// Set the FP from the SP.
BuildMI(MBB, MBBI, dl, TII.get(XCore::LDAWSP_ru6), FramePtr).addImm(0);
if (emitFrameMoves)
EmitDefCfaRegister(MBB, MBBI, dl, TII, MMI,
MRI->getDwarfRegNum(FramePtr, true));
}
if (emitFrameMoves) {
// Frame moves for callee saved.
std::vector<std::pair<MCSymbol*, CalleeSavedInfo> >&SpillLabels =
XFI->getSpillLabels();
for (unsigned I = 0, E = SpillLabels.size(); I != E; ++I) {
MCSymbol *SpillLabel = SpillLabels[I].first;
CalleeSavedInfo &CSI = SpillLabels[I].second;
int Offset = MFI->getObjectOffset(CSI.getFrameIdx());
unsigned DRegNum = MRI->getDwarfRegNum(CSI.getReg(), true);
EmitCfiOffset(MBB, MBBI, dl, TII, MMI, DRegNum, Offset, SpillLabel);
}
}
}
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<XCoreFunctionInfo>();
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, 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);
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);
MBB.addLiveIn(XCore::LR);
if (emitFrameMoves) {
unsigned SaveLRLabelId = MMI->NextLabelID();
BuildMI(MBB, MBBI, 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);
// 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);
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, 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);
MachineLocation SPDst(FramePtr);
MachineLocation SPSrc(MachineLocation::VirtualFP);
MMI->getFrameMoves().push_back(MachineMove(FrameLabelId, SPDst, SPSrc));
}
}
if (emitFrameMoves) {
// Frame moves for callee saved.
std::vector<MachineMove> &Moves = MMI->getFrameMoves();
std::vector<std::pair<unsigned, CalleeSavedInfo> >&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 XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
MachineBasicBlock::iterator MBBI = MBB.begin();
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineModuleInfo *MMI = &MF.getMMI();
const XCoreInstrInfo &TII =
*static_cast<const XCoreInstrInfo*>(MF.getTarget().getInstrInfo());
XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
bool FP = hasFP(MF);
const AttributeSet &PAL = MF.getFunction()->getAttributes();
if (PAL.hasAttrSomewhere(Attribute::Nest))
loadFromStack(MBB, MBBI, XCore::R11, 0, dl, TII);
// 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.
report_fatal_error("emitPrologue Frame size too big: " + Twine(FrameSize));
}
bool emitFrameMoves = XCoreRegisterInfo::needsFrameMoves(MF);
bool saveLR = XFI->getUsesLR();
// Do we need to allocate space on the stack?
if (FrameSize) {
int Opcode;
if (saveLR && (MFI->getObjectOffset(XFI->getLRSpillSlot()) == 0)) {
Opcode = (isU6) ? XCore::ENTSP_u6 : XCore::ENTSP_lu6;
MBB.addLiveIn(XCore::LR);
saveLR = false;
} else {
Opcode = (isU6) ? XCore::EXTSP_u6 : XCore::EXTSP_lu6;
}
BuildMI(MBB, MBBI, dl, TII.get(Opcode)).addImm(FrameSize);
if (emitFrameMoves) {
// Show update of SP.
MCSymbol *FrameLabel = MMI->getContext().CreateTempSymbol();
BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(FrameLabel);
}
}
if (saveLR) {
int LRSpillOffset = MFI->getObjectOffset(XFI->getLRSpillSlot());
storeToStack(MBB, MBBI, XCore::LR, LRSpillOffset + FrameSize*4, dl, TII);
MBB.addLiveIn(XCore::LR);
if (emitFrameMoves) {
MCSymbol *SaveLRLabel = MMI->getContext().CreateTempSymbol();
BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(SaveLRLabel);
}
}
if (FP) {
// Save R10 to the stack.
int FPSpillOffset = MFI->getObjectOffset(XFI->getFPSpillSlot());
storeToStack(MBB, MBBI, XCore::R10, FPSpillOffset + FrameSize*4, dl, TII);
// R10 is live-in. It is killed at the spill.
MBB.addLiveIn(XCore::R10);
if (emitFrameMoves) {
MCSymbol *SaveR10Label = MMI->getContext().CreateTempSymbol();
BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(SaveR10Label);
}
// 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.
MCSymbol *FrameLabel = MMI->getContext().CreateTempSymbol();
BuildMI(MBB, MBBI, dl, TII.get(XCore::PROLOG_LABEL)).addSym(FrameLabel);
}
}
}
void XCoreFrameLowering::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front(); // Prolog goes in entry BB
MachineBasicBlock::iterator MBBI = MBB.begin();
MachineFrameInfo *MFI = MF.getFrameInfo();
MachineModuleInfo *MMI = &MF.getMMI();
const XCoreRegisterInfo *RegInfo =
static_cast<const XCoreRegisterInfo*>(MF.getTarget().getRegisterInfo());
const XCoreInstrInfo &TII =
*static_cast<const XCoreInstrInfo*>(MF.getTarget().getInstrInfo());
XCoreFunctionInfo *XFI = MF.getInfo<XCoreFunctionInfo>();
DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
bool FP = hasFP(MF);
bool Nested = MF.getFunction()->getAttributes().hasAttrSomewhere(Attribute::Nest);
if (Nested) {
loadFromStack(MBB, MBBI, XCore::R11, 0, dl, TII);
}
// 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.
report_fatal_error("emitPrologue Frame size too big: " + Twine(FrameSize));
}
bool emitFrameMoves = RegInfo->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<MachineMove> &Moves = MMI->getFrameMoves();
// Show update of SP.
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(FrameLabel, SPDst, SPSrc));
if (LRSavedOnEntry) {
MachineLocation CSDst(MachineLocation::VirtualFP, 0);
MachineLocation CSSrc(XCore::LR);
Moves.push_back(MachineMove(FrameLabel, CSDst, CSSrc));
}
}
if (saveLR) {
int LRSpillOffset = MFI->getObjectOffset(XFI->getLRSpillSlot());
storeToStack(MBB, MBBI, XCore::LR, LRSpillOffset + FrameSize*4, dl, TII);
MBB.addLiveIn(XCore::LR);
if (emitFrameMoves) {
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(SaveLRLabel, CSDst, CSSrc));
}
}
}
if (FP) {
// Save R10 to the stack.
int FPSpillOffset = MFI->getObjectOffset(XFI->getFPSpillSlot());
storeToStack(MBB, MBBI, XCore::R10, FPSpillOffset + FrameSize*4, dl, TII);
// R10 is live-in. It is killed at the spill.
MBB.addLiveIn(XCore::R10);
if (emitFrameMoves) {
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(SaveR10Label, 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.
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(FrameLabel, SPDst, SPSrc));
}
}
if (emitFrameMoves) {
// Frame moves for callee saved.
std::vector<MachineMove> &Moves = MMI->getFrameMoves();
std::vector<std::pair<MCSymbol*, CalleeSavedInfo> >&SpillLabels =
XFI->getSpillLabels();
for (unsigned I = 0, E = SpillLabels.size(); I != E; ++I) {
MCSymbol *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));
}
}
}
