-//=====- PPCFrameLowering.cpp - PPC Frame Information -----------*- C++ -*-===//
+//===-- PPCFrameLowering.cpp - PPC Frame Information ----------------------===//
//
// The LLVM Compiler Infrastructure
//
/// VRRegNo - Map from a numbered VR register to its enum value.
///
-static const unsigned short VRRegNo[] = {
+static const uint16_t VRRegNo[] = {
PPC::V0 , PPC::V1 , PPC::V2 , PPC::V3 , PPC::V4 , PPC::V5 , PPC::V6 , PPC::V7 ,
PPC::V8 , PPC::V9 , PPC::V10, PPC::V11, PPC::V12, PPC::V13, PPC::V14, PPC::V15,
PPC::V16, PPC::V17, PPC::V18, PPC::V19, PPC::V20, PPC::V21, PPC::V22, PPC::V23,
// epilog blocks.
for (MachineFunction::iterator I = MF->begin(), E = MF->end(); I != E; ++I) {
// If last instruction is a return instruction, add an epilogue
- if (!I->empty() && I->back().getDesc().isReturn()) {
+ if (!I->empty() && I->back().isReturn()) {
bool FoundIt = false;
for (MBBI = I->end(); MBBI != I->begin(); ) {
--MBBI;
for (MachineRegisterInfo::livein_iterator
I = MF->getRegInfo().livein_begin(),
E = MF->getRegInfo().livein_end(); I != E; ++I) {
- unsigned RegNo = PPCRegisterInfo::getRegisterNumbering(I->first);
+ unsigned RegNo = getPPCRegisterNumbering(I->first);
if (VRRegNo[RegNo] == I->first) // If this really is a vector reg.
UsedRegMask &= ~(1 << (31-RegNo)); // Doesn't need to be marked.
}
for (MachineRegisterInfo::liveout_iterator
I = MF->getRegInfo().liveout_begin(),
E = MF->getRegInfo().liveout_end(); I != E; ++I) {
- unsigned RegNo = PPCRegisterInfo::getRegisterNumbering(*I);
+ unsigned RegNo = getPPCRegisterNumbering(*I);
if (VRRegNo[RegNo] == *I) // If this really is a vector reg.
UsedRegMask &= ~(1 << (31-RegNo)); // Doesn't need to be marked.
}
if (MF.getFunction()->hasFnAttr(Attribute::Naked))
return false;
- return DisableFramePointerElim(MF) || MFI->hasVarSizedObjects() ||
- (GuaranteedTailCallOpt && MF.getInfo<PPCFunctionInfo>()->hasFastCall());
+ return MF.getTarget().Options.DisableFramePointerElim(MF) ||
+ MFI->hasVarSizedObjects() ||
+ (MF.getTarget().Options.GuaranteedTailCallOpt &&
+ MF.getInfo<PPCFunctionInfo>()->hasFastCall());
}
BuildMI(MBB, MBBI, dl, TII.get(PPC::MFLR), PPC::R0);
if (HasFP)
+ // FIXME: On PPC32 SVR4, FPOffset is negative and access to negative
+ // offsets of R1 is not allowed.
BuildMI(MBB, MBBI, dl, TII.get(PPC::STW))
.addReg(PPC::R31)
.addImm(FPOffset)
BuildMI(MBB, MBBI, dl, TII.get(PPC::SUBFIC) ,PPC::R0)
.addReg(PPC::R0, RegState::Kill)
.addImm(NegFrameSize);
- BuildMI(MBB, MBBI, dl, TII.get(PPC::STWUX))
- .addReg(PPC::R1)
+ BuildMI(MBB, MBBI, dl, TII.get(PPC::STWUX), PPC::R1)
+ .addReg(PPC::R1, RegState::Kill)
.addReg(PPC::R1)
.addReg(PPC::R0);
} else if (isInt<16>(NegFrameSize)) {
BuildMI(MBB, MBBI, dl, TII.get(PPC::ORI), PPC::R0)
.addReg(PPC::R0, RegState::Kill)
.addImm(NegFrameSize & 0xFFFF);
- BuildMI(MBB, MBBI, dl, TII.get(PPC::STWUX))
- .addReg(PPC::R1)
+ BuildMI(MBB, MBBI, dl, TII.get(PPC::STWUX), PPC::R1)
+ .addReg(PPC::R1, RegState::Kill)
.addReg(PPC::R1)
.addReg(PPC::R0);
}
BuildMI(MBB, MBBI, dl, TII.get(PPC::SUBFIC8), PPC::X0)
.addReg(PPC::X0)
.addImm(NegFrameSize);
- BuildMI(MBB, MBBI, dl, TII.get(PPC::STDUX))
- .addReg(PPC::X1)
+ BuildMI(MBB, MBBI, dl, TII.get(PPC::STDUX), PPC::X1)
+ .addReg(PPC::X1, RegState::Kill)
.addReg(PPC::X1)
.addReg(PPC::X0);
} else if (isInt<16>(NegFrameSize)) {
BuildMI(MBB, MBBI, dl, TII.get(PPC::ORI8), PPC::X0)
.addReg(PPC::X0, RegState::Kill)
.addImm(NegFrameSize & 0xFFFF);
- BuildMI(MBB, MBBI, dl, TII.get(PPC::STDUX))
- .addReg(PPC::X1)
+ BuildMI(MBB, MBBI, dl, TII.get(PPC::STDUX), PPC::X1)
+ .addReg(PPC::X1, RegState::Kill)
.addReg(PPC::X1)
.addReg(PPC::X0);
}
int Offset = MFI->getObjectOffset(CSI[I].getFrameIdx());
unsigned Reg = CSI[I].getReg();
if (Reg == PPC::LR || Reg == PPC::LR8 || Reg == PPC::RM) continue;
+
+ // This is a bit of a hack: CR2LT, CR2GT, CR2EQ and CR2UN are just
+ // subregisters of CR2. We just need to emit a move of CR2.
+ if (PPC::CRBITRCRegClass.contains(Reg))
+ continue;
+
MachineLocation CSDst(MachineLocation::VirtualFP, Offset);
MachineLocation CSSrc(Reg);
Moves.push_back(MachineMove(Label, CSDst, CSSrc));
// Callee pop calling convention. Pop parameter/linkage area. Used for tail
// call optimization
- if (GuaranteedTailCallOpt && RetOpcode == PPC::BLR &&
+ if (MF.getTarget().Options.GuaranteedTailCallOpt && RetOpcode == PPC::BLR &&
MF.getFunction()->getCallingConv() == CallingConv::Fast) {
PPCFunctionInfo *FI = MF.getInfo<PPCFunctionInfo>();
unsigned CallerAllocatedAmt = FI->getMinReservedArea();
}
}
-void PPCFrameLowering::getInitialFrameState(std::vector<MachineMove> &Moves) const {
- // Initial state of the frame pointer is R1.
- MachineLocation Dst(MachineLocation::VirtualFP);
- MachineLocation Src(PPC::R1, 0);
- Moves.push_back(MachineMove(0, Dst, Src));
-}
-
static bool spillsCR(const MachineFunction &MF) {
const PPCFunctionInfo *FuncInfo = MF.getInfo<PPCFunctionInfo>();
return FuncInfo->isCRSpilled();
// Reserve stack space to move the linkage area to in case of a tail call.
int TCSPDelta = 0;
- if (GuaranteedTailCallOpt && (TCSPDelta = FI->getTailCallSPDelta()) < 0) {
+ if (MF.getTarget().Options.GuaranteedTailCallOpt &&
+ (TCSPDelta = FI->getTailCallSPDelta()) < 0) {
MFI->CreateFixedObject(-1 * TCSPDelta, TCSPDelta, true);
}
// FIXME: doesn't detect whether or not we need to spill vXX, which requires
// r0 for now.
- if (RegInfo->requiresRegisterScavenging(MF)) // FIXME (64-bit): Enable.
+ if (RegInfo->requiresRegisterScavenging(MF))
if (needsFP(MF) || spillsCR(MF)) {
const TargetRegisterClass *GPRC = &PPC::GPRCRegClass;
const TargetRegisterClass *G8RC = &PPC::G8RCRegClass;
for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
unsigned Reg = CSI[i].getReg();
- if (PPC::GPRCRegisterClass->contains(Reg)) {
+ if (PPC::GPRCRegClass.contains(Reg)) {
HasGPSaveArea = true;
GPRegs.push_back(CSI[i]);
if (Reg < MinGPR) {
MinGPR = Reg;
}
- } else if (PPC::G8RCRegisterClass->contains(Reg)) {
+ } else if (PPC::G8RCRegClass.contains(Reg)) {
HasG8SaveArea = true;
G8Regs.push_back(CSI[i]);
if (Reg < MinG8R) {
MinG8R = Reg;
}
- } else if (PPC::F8RCRegisterClass->contains(Reg)) {
+ } else if (PPC::F8RCRegClass.contains(Reg)) {
HasFPSaveArea = true;
FPRegs.push_back(CSI[i]);
MinFPR = Reg;
}
// FIXME SVR4: Disable CR save area for now.
- } else if (PPC::CRBITRCRegisterClass->contains(Reg)
- || PPC::CRRCRegisterClass->contains(Reg)) {
+ } else if (PPC::CRBITRCRegClass.contains(Reg) ||
+ PPC::CRRCRegClass.contains(Reg)) {
// HasCRSaveArea = true;
- } else if (PPC::VRSAVERCRegisterClass->contains(Reg)) {
+ } else if (PPC::VRSAVERCRegClass.contains(Reg)) {
HasVRSAVESaveArea = true;
- } else if (PPC::VRRCRegisterClass->contains(Reg)) {
+ } else if (PPC::VRRCRegClass.contains(Reg)) {
HasVRSaveArea = true;
VRegs.push_back(CSI[i]);
// Take into account stack space reserved for tail calls.
int TCSPDelta = 0;
- if (GuaranteedTailCallOpt && (TCSPDelta = PFI->getTailCallSPDelta()) < 0) {
+ if (MF.getTarget().Options.GuaranteedTailCallOpt &&
+ (TCSPDelta = PFI->getTailCallSPDelta()) < 0) {
LowerBound = TCSPDelta;
}
FFI->setObjectOffset(FI, LowerBound + FFI->getObjectOffset(FI));
}
- LowerBound -= (31 - PPCRegisterInfo::getRegisterNumbering(MinFPR) + 1) * 8;
+ LowerBound -= (31 - getPPCRegisterNumbering(MinFPR) + 1) * 8;
}
// Check whether the frame pointer register is allocated. If so, make sure it
}
unsigned MinReg =
- std::min<unsigned>(PPCRegisterInfo::getRegisterNumbering(MinGPR),
- PPCRegisterInfo::getRegisterNumbering(MinG8R));
+ std::min<unsigned>(getPPCRegisterNumbering(MinGPR),
+ getPPCRegisterNumbering(MinG8R));
if (Subtarget.isPPC64()) {
LowerBound -= (31 - MinReg + 1) * 8;
for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
unsigned Reg = CSI[i].getReg();
- if (PPC::CRBITRCRegisterClass->contains(Reg) ||
- PPC::CRRCRegisterClass->contains(Reg)) {
+ if (PPC::CRBITRCRegClass.contains(Reg) ||
+ PPC::CRRCRegClass.contains(Reg)) {
int FI = CSI[i].getFrameIdx();
FFI->setObjectOffset(FI, LowerBound + FFI->getObjectOffset(FI));
for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
unsigned Reg = CSI[i].getReg();
- if (PPC::VRSAVERCRegisterClass->contains(Reg)) {
+ if (PPC::VRSAVERCRegClass.contains(Reg)) {
int FI = CSI[i].getFrameIdx();
FFI->setObjectOffset(FI, LowerBound + FFI->getObjectOffset(FI));
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