static const unsigned DarwinCalleeSavedRegs[] = {
// Darwin ABI deviates from ARM standard ABI. R9 is not a callee-saved
// register.
- ARM::LR, ARM::R7, ARM::R6, ARM::R5, ARM::R4,
- ARM::R11, ARM::R10, ARM::R8,
+ ARM::LR, ARM::R11, ARM::R10, ARM::R8,
+ ARM::R7, ARM::R6, ARM::R5, ARM::R4,
ARM::D15, ARM::D14, ARM::D13, ARM::D12,
ARM::D11, ARM::D10, ARM::D9, ARM::D8,
bool LRSpilled = false;
unsigned NumGPRSpills = 0;
SmallVector<unsigned, 4> UnspilledCS1GPRs;
- SmallVector<unsigned, 4> UnspilledCS2GPRs;
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
MachineFrameInfo *MFI = MF.getFrameInfo();
break;
}
} else {
- if (!STI.isTargetDarwin()) {
- UnspilledCS1GPRs.push_back(Reg);
- continue;
- }
-
- switch (Reg) {
- case ARM::R4:
- case ARM::R5:
- case ARM::R6:
- case ARM::R7:
- case ARM::LR:
- UnspilledCS1GPRs.push_back(Reg);
- break;
- default:
- UnspilledCS2GPRs.push_back(Reg);
- break;
- }
+ UnspilledCS1GPRs.push_back(Reg);
}
}
break;
}
}
- } else if (!UnspilledCS2GPRs.empty() &&
- !AFI->isThumb1OnlyFunction()) {
- unsigned Reg = UnspilledCS2GPRs.front();
- MF.getRegInfo().setPhysRegUsed(Reg);
- AFI->setCSRegisterIsSpilled(Reg);
- if (!isReservedReg(MF, Reg))
- ExtraCSSpill = true;
}
}
NumExtras--;
}
}
- // For non-Thumb1 functions, also check for hi-reg CS registers
- if (!AFI->isThumb1OnlyFunction()) {
- while (NumExtras && !UnspilledCS2GPRs.empty()) {
- unsigned Reg = UnspilledCS2GPRs.back();
- UnspilledCS2GPRs.pop_back();
- if (!isReservedReg(MF, Reg)) {
- Extras.push_back(Reg);
- NumExtras--;
- }
- }
- }
if (Extras.size() && NumExtras == 0) {
for (unsigned i = 0, e = Extras.size(); i != e; ++i) {
MF.getRegInfo().setPhysRegUsed(Extras[i]);
FrameReg = ARM::SP;
Offset += SPAdj;
- if (AFI->isGPRCalleeSavedArea1Frame(FI))
- return Offset - AFI->getGPRCalleeSavedArea1Offset();
- else if (AFI->isGPRCalleeSavedArea2Frame(FI))
- return Offset - AFI->getGPRCalleeSavedArea2Offset();
+ if (AFI->isGPRCalleeSavedAreaFrame(FI))
+ return Offset - AFI->getGPRCalleeSavedAreaOffset();
else if (AFI->isDPRCalleeSavedAreaFrame(FI))
return Offset - AFI->getDPRCalleeSavedAreaOffset();
}
/// Move iterator past the next bunch of callee save load / store ops for
-/// the particular spill area (1: integer area 1, 2: integer area 2,
-/// 3: fp area, 0: don't care).
+/// the particular spill area (1: integer area 1, 2: fp area, 0: don't care).
static void movePastCSLoadStoreOps(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI,
int Opc1, int Opc2, unsigned Area,
unsigned Category = 0;
switch (MBBI->getOperand(0).getReg()) {
case ARM::R4: case ARM::R5: case ARM::R6: case ARM::R7:
+ case ARM::R8: case ARM::R9: case ARM::R10: case ARM::R11:
case ARM::LR:
Category = 1;
break;
- case ARM::R8: case ARM::R9: case ARM::R10: case ARM::R11:
- Category = STI.isTargetDarwin() ? 2 : 1;
- break;
case ARM::D8: case ARM::D9: case ARM::D10: case ARM::D11:
case ARM::D12: case ARM::D13: case ARM::D14: case ARM::D15:
- Category = 3;
+ Category = 2;
break;
default:
Done = true;
// Determine the sizes of each callee-save spill areas and record which frame
// belongs to which callee-save spill areas.
- unsigned GPRCS1Size = 0, GPRCS2Size = 0, DPRCSSize = 0;
+ unsigned GPRCSSize = 0/*, GPRCS2Size = 0*/, DPRCSSize = 0;
int FramePtrSpillFI = 0;
// Allocate the vararg register save area. This is not counted in NumBytes.
case ARM::R5:
case ARM::R6:
case ARM::R7:
- case ARM::LR:
- if (Reg == FramePtr)
- FramePtrSpillFI = FI;
- AFI->addGPRCalleeSavedArea1Frame(FI);
- GPRCS1Size += 4;
- break;
case ARM::R8:
case ARM::R9:
case ARM::R10:
case ARM::R11:
+ case ARM::LR:
if (Reg == FramePtr)
FramePtrSpillFI = FI;
- if (STI.isTargetDarwin()) {
- AFI->addGPRCalleeSavedArea2Frame(FI);
- GPRCS2Size += 4;
- } else {
- AFI->addGPRCalleeSavedArea1Frame(FI);
- GPRCS1Size += 4;
- }
+ AFI->addGPRCalleeSavedAreaFrame(FI);
+ GPRCSSize += 4;
break;
default:
AFI->addDPRCalleeSavedAreaFrame(FI);
}
}
- // Build the new SUBri to adjust SP for integer callee-save spill area 1.
- emitSPUpdate(isARM, MBB, MBBI, dl, TII, -GPRCS1Size);
+ // Build the new SUBri to adjust SP for integer callee-save spill area.
+ emitSPUpdate(isARM, MBB, MBBI, dl, TII, -GPRCSSize);
movePastCSLoadStoreOps(MBB, MBBI, ARM::STR, ARM::t2STRi12, 1, STI);
// Set FP to point to the stack slot that contains the previous FP.
- // For Darwin, FP is R7, which has now been stored in spill area 1.
- // Otherwise, if this is not Darwin, all the callee-saved registers go
- // into spill area 1, including the FP in R11. In either case, it is
- // now safe to emit this assignment.
bool HasFP = hasFP(MF);
if (HasFP) {
unsigned ADDriOpc = !AFI->isThumbFunction() ? ARM::ADDri : ARM::t2ADDri;
AddDefaultCC(AddDefaultPred(MIB));
}
- // Build the new SUBri to adjust SP for integer callee-save spill area 2.
- emitSPUpdate(isARM, MBB, MBBI, dl, TII, -GPRCS2Size);
-
// Build the new SUBri to adjust SP for FP callee-save spill area.
- movePastCSLoadStoreOps(MBB, MBBI, ARM::STR, ARM::t2STRi12, 2, STI);
emitSPUpdate(isARM, MBB, MBBI, dl, TII, -DPRCSSize);
// Determine starting offsets of spill areas.
- unsigned DPRCSOffset = NumBytes - (GPRCS1Size + GPRCS2Size + DPRCSSize);
- unsigned GPRCS2Offset = DPRCSOffset + DPRCSSize;
- unsigned GPRCS1Offset = GPRCS2Offset + GPRCS2Size;
+ unsigned DPRCSOffset = NumBytes - (GPRCSSize + DPRCSSize);
+ unsigned GPRCSOffset = DPRCSOffset + DPRCSSize;
if (HasFP)
AFI->setFramePtrSpillOffset(MFI->getObjectOffset(FramePtrSpillFI) +
NumBytes);
- AFI->setGPRCalleeSavedArea1Offset(GPRCS1Offset);
- AFI->setGPRCalleeSavedArea2Offset(GPRCS2Offset);
+ AFI->setGPRCalleeSavedAreaOffset(GPRCSOffset);
AFI->setDPRCalleeSavedAreaOffset(DPRCSOffset);
- movePastCSLoadStoreOps(MBB, MBBI, ARM::VSTRD, 0, 3, STI);
+ movePastCSLoadStoreOps(MBB, MBBI, ARM::VSTRD, 0, 2, STI);
NumBytes = DPRCSOffset;
if (NumBytes) {
// Adjust SP after all the callee-save spills.
AFI->setShouldRestoreSPFromFP(true);
}
- AFI->setGPRCalleeSavedArea1Size(GPRCS1Size);
- AFI->setGPRCalleeSavedArea2Size(GPRCS2Size);
+ AFI->setGPRCalleeSavedAreaSize(GPRCSSize);
AFI->setDPRCalleeSavedAreaSize(DPRCSSize);
// If we need dynamic stack realignment, do it here. Be paranoid and make
}
// Move SP to start of FP callee save spill area.
- NumBytes -= (AFI->getGPRCalleeSavedArea1Size() +
- AFI->getGPRCalleeSavedArea2Size() +
+ NumBytes -= (AFI->getGPRCalleeSavedAreaSize() +
AFI->getDPRCalleeSavedAreaSize());
// Reset SP based on frame pointer only if the stack frame extends beyond
} else if (NumBytes)
emitSPUpdate(isARM, MBB, MBBI, dl, TII, NumBytes);
- // Move SP to start of integer callee save spill area 2.
- movePastCSLoadStoreOps(MBB, MBBI, ARM::VLDRD, 0, 3, STI);
+ // Move SP to start of integer callee save spill area.
+ movePastCSLoadStoreOps(MBB, MBBI, ARM::VLDRD, 0, 2, STI);
emitSPUpdate(isARM, MBB, MBBI, dl, TII, AFI->getDPRCalleeSavedAreaSize());
- // Move SP to start of integer callee save spill area 1.
- movePastCSLoadStoreOps(MBB, MBBI, ARM::LDR, ARM::t2LDRi12, 2, STI);
- emitSPUpdate(isARM, MBB, MBBI, dl, TII, AFI->getGPRCalleeSavedArea2Size());
-
// Move SP to SP upon entry to the function.
movePastCSLoadStoreOps(MBB, MBBI, ARM::LDR, ARM::t2LDRi12, 1, STI);
- emitSPUpdate(isARM, MBB, MBBI, dl, TII, AFI->getGPRCalleeSavedArea1Size());
+ emitSPUpdate(isARM, MBB, MBBI, dl, TII, AFI->getGPRCalleeSavedAreaSize());
}
if (RetOpcode == ARM::TCRETURNdi || RetOpcode == ARM::TCRETURNdiND ||
/// spill stack offset.
unsigned FramePtrSpillOffset;
- /// GPRCS1Offset, GPRCS2Offset, DPRCSOffset - Starting offset of callee saved
- /// register spills areas. For Mac OS X:
+ /// GPRCSOffset, GPRCS2Offset, DPRCSOffset - Starting offset of callee saved
+ /// register spills areas (excluding R9 for Mac OS X):
///
- /// GPR callee-saved (1) : r4, r5, r6, r7, lr
- /// --------------------------------------------
- /// GPR callee-saved (2) : r8, r10, r11
+ /// GPR callee-saved (1) : r4, r5, r6, r7, r8, r9, r10, r11, lr
/// --------------------------------------------
/// DPR callee-saved : d8 - d15
- unsigned GPRCS1Offset;
- unsigned GPRCS2Offset;
+ unsigned GPRCSOffset;
unsigned DPRCSOffset;
- /// GPRCS1Size, GPRCS2Size, DPRCSSize - Sizes of callee saved register spills
+ /// GPRCSSize, GPRCS2Size, DPRCSSize - Sizes of callee saved register spills
/// areas.
- unsigned GPRCS1Size;
- unsigned GPRCS2Size;
+ unsigned GPRCSSize;
unsigned DPRCSSize;
- /// GPRCS1Frames, GPRCS2Frames, DPRCSFrames - Keeps track of frame indices
+ /// GPRCSFrames, GPRCS2Frames, DPRCSFrames - Keeps track of frame indices
/// which belong to these spill areas.
- BitVector GPRCS1Frames;
- BitVector GPRCS2Frames;
+ BitVector GPRCSFrames;
BitVector DPRCSFrames;
/// SpilledCSRegs - A BitVector mask of all spilled callee-saved registers.
hasThumb2(false),
VarArgsRegSaveSize(0), HasStackFrame(false), RestoreSPFromFP(false),
LRSpilledForFarJump(false),
- FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
- GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),
- GPRCS1Frames(0), GPRCS2Frames(0), DPRCSFrames(0),
+ FramePtrSpillOffset(0), GPRCSOffset(0), DPRCSOffset(0),
+ GPRCSSize(0), DPRCSSize(0),
+ GPRCSFrames(0), DPRCSFrames(0),
JumpTableUId(0), ConstPoolEntryUId(0), VarArgsFrameIndex(0),
HasITBlocks(false) {}
hasThumb2(MF.getTarget().getSubtarget<ARMSubtarget>().hasThumb2()),
VarArgsRegSaveSize(0), HasStackFrame(false), RestoreSPFromFP(false),
LRSpilledForFarJump(false),
- FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
- GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),
- GPRCS1Frames(32), GPRCS2Frames(32), DPRCSFrames(32),
+ FramePtrSpillOffset(0), GPRCSOffset(0), DPRCSOffset(0),
+ GPRCSSize(0), DPRCSSize(0),
+ GPRCSFrames(32), DPRCSFrames(32),
SpilledCSRegs(MF.getTarget().getRegisterInfo()->getNumRegs()),
JumpTableUId(0), ConstPoolEntryUId(0), VarArgsFrameIndex(0),
HasITBlocks(false) {}
unsigned getFramePtrSpillOffset() const { return FramePtrSpillOffset; }
void setFramePtrSpillOffset(unsigned o) { FramePtrSpillOffset = o; }
- unsigned getGPRCalleeSavedArea1Offset() const { return GPRCS1Offset; }
- unsigned getGPRCalleeSavedArea2Offset() const { return GPRCS2Offset; }
+ unsigned getGPRCalleeSavedAreaOffset() const { return GPRCSOffset; }
unsigned getDPRCalleeSavedAreaOffset() const { return DPRCSOffset; }
- void setGPRCalleeSavedArea1Offset(unsigned o) { GPRCS1Offset = o; }
- void setGPRCalleeSavedArea2Offset(unsigned o) { GPRCS2Offset = o; }
+ void setGPRCalleeSavedAreaOffset(unsigned o) { GPRCSOffset = o; }
void setDPRCalleeSavedAreaOffset(unsigned o) { DPRCSOffset = o; }
- unsigned getGPRCalleeSavedArea1Size() const { return GPRCS1Size; }
- unsigned getGPRCalleeSavedArea2Size() const { return GPRCS2Size; }
+ unsigned getGPRCalleeSavedAreaSize() const { return GPRCSSize; }
unsigned getDPRCalleeSavedAreaSize() const { return DPRCSSize; }
- void setGPRCalleeSavedArea1Size(unsigned s) { GPRCS1Size = s; }
- void setGPRCalleeSavedArea2Size(unsigned s) { GPRCS2Size = s; }
+ void setGPRCalleeSavedAreaSize(unsigned s) { GPRCSSize = s; }
void setDPRCalleeSavedAreaSize(unsigned s) { DPRCSSize = s; }
- bool isGPRCalleeSavedArea1Frame(int fi) const {
- if (fi < 0 || fi >= (int)GPRCS1Frames.size())
- return false;
- return GPRCS1Frames[fi];
- }
- bool isGPRCalleeSavedArea2Frame(int fi) const {
- if (fi < 0 || fi >= (int)GPRCS2Frames.size())
+ bool isGPRCalleeSavedAreaFrame(int fi) const {
+ if (fi < 0 || fi >= (int)GPRCSFrames.size())
return false;
- return GPRCS2Frames[fi];
+ return GPRCSFrames[fi];
}
bool isDPRCalleeSavedAreaFrame(int fi) const {
if (fi < 0 || fi >= (int)DPRCSFrames.size())
return DPRCSFrames[fi];
}
- void addGPRCalleeSavedArea1Frame(int fi) {
- if (fi >= 0) {
- int Size = GPRCS1Frames.size();
- if (fi >= Size) {
- Size *= 2;
- if (fi >= Size)
- Size = fi+1;
- GPRCS1Frames.resize(Size);
- }
- GPRCS1Frames[fi] = true;
- }
- }
- void addGPRCalleeSavedArea2Frame(int fi) {
+ void addGPRCalleeSavedAreaFrame(int fi) {
if (fi >= 0) {
- int Size = GPRCS2Frames.size();
+ int Size = GPRCSFrames.size();
if (fi >= Size) {
Size *= 2;
if (fi >= Size)
Size = fi+1;
- GPRCS2Frames.resize(Size);
+ GPRCSFrames.resize(Size);
}
- GPRCS2Frames[fi] = true;
+ GPRCSFrames[fi] = true;
}
}
void addDPRCalleeSavedAreaFrame(int fi) {
int Offset = MF.getFrameInfo()->getObjectOffset(FrameIndex) +
MF.getFrameInfo()->getStackSize() + SPAdj;
- if (AFI->isGPRCalleeSavedArea1Frame(FrameIndex))
- Offset -= AFI->getGPRCalleeSavedArea1Offset();
- else if (AFI->isGPRCalleeSavedArea2Frame(FrameIndex))
- Offset -= AFI->getGPRCalleeSavedArea2Offset();
+ if (AFI->isGPRCalleeSavedAreaFrame(FrameIndex))
+ Offset -= AFI->getGPRCalleeSavedAreaOffset();
else if (MF.getFrameInfo()->hasVarSizedObjects()) {
assert(SPAdj == 0 && hasFP(MF) && "Unexpected");
// There are alloca()'s in this function, must reference off the frame
// Determine the sizes of each callee-save spill areas and record which frame
// belongs to which callee-save spill areas.
- unsigned GPRCS1Size = 0, GPRCS2Size = 0, DPRCSSize = 0;
+ unsigned GPRCSSize = 0, DPRCSSize = 0;
int FramePtrSpillFI = 0;
if (VARegSaveSize)
case ARM::R5:
case ARM::R6:
case ARM::R7:
- case ARM::LR:
- if (Reg == FramePtr)
- FramePtrSpillFI = FI;
- AFI->addGPRCalleeSavedArea1Frame(FI);
- GPRCS1Size += 4;
- break;
case ARM::R8:
case ARM::R9:
case ARM::R10:
case ARM::R11:
+ case ARM::LR:
if (Reg == FramePtr)
FramePtrSpillFI = FI;
- if (STI.isTargetDarwin()) {
- AFI->addGPRCalleeSavedArea2Frame(FI);
- GPRCS2Size += 4;
- } else {
- AFI->addGPRCalleeSavedArea1Frame(FI);
- GPRCS1Size += 4;
- }
+ AFI->addGPRCalleeSavedAreaFrame(FI);
+ GPRCSSize += 4;
break;
default:
AFI->addDPRCalleeSavedAreaFrame(FI);
}
// Determine starting offsets of spill areas.
- unsigned DPRCSOffset = NumBytes - (GPRCS1Size + GPRCS2Size + DPRCSSize);
- unsigned GPRCS2Offset = DPRCSOffset + DPRCSSize;
- unsigned GPRCS1Offset = GPRCS2Offset + GPRCS2Size;
+ unsigned DPRCSOffset = NumBytes - (GPRCSSize + DPRCSSize);
+ unsigned GPRCSOffset = DPRCSOffset + DPRCSSize;
AFI->setFramePtrSpillOffset(MFI->getObjectOffset(FramePtrSpillFI) + NumBytes);
- AFI->setGPRCalleeSavedArea1Offset(GPRCS1Offset);
- AFI->setGPRCalleeSavedArea2Offset(GPRCS2Offset);
+ AFI->setGPRCalleeSavedAreaOffset(GPRCSOffset);
AFI->setDPRCalleeSavedAreaOffset(DPRCSOffset);
NumBytes = DPRCSOffset;
MFI->setOffsetAdjustment(MFI->getOffsetAdjustment() -
AFI->getFramePtrSpillOffset());
- AFI->setGPRCalleeSavedArea1Size(GPRCS1Size);
- AFI->setGPRCalleeSavedArea2Size(GPRCS2Size);
+ AFI->setGPRCalleeSavedAreaSize(GPRCSSize);
AFI->setDPRCalleeSavedAreaSize(DPRCSSize);
// If we need a base pointer, set it up here. It's whatever the value
}
// Move SP to start of FP callee save spill area.
- NumBytes -= (AFI->getGPRCalleeSavedArea1Size() +
- AFI->getGPRCalleeSavedArea2Size() +
+ NumBytes -= (AFI->getGPRCalleeSavedAreaSize() +
AFI->getDPRCalleeSavedAreaSize());
if (AFI->shouldRestoreSPFromFP()) {