return Subtarget.isPPC64() ? CSR_SVR464_RegMask : CSR_SVR432_RegMask;
}
+const uint32_t*
+PPCRegisterInfo::getNoPreservedMask() const {
+ // The naming here is inverted: The CSR_NoRegs_Altivec has the
+ // Altivec registers masked so that they're not saved and restored around
+ // instructions with this preserved mask.
+
+ if (!Subtarget.hasAltivec())
+ return CSR_NoRegs_Altivec_RegMask;
+
+ if (Subtarget.isDarwin())
+ return CSR_NoRegs_Darwin_RegMask;
+ return CSR_NoRegs_RegMask;
+}
+
BitVector PPCRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
BitVector Reserved(getNumRegs());
const PPCFrameLowering *PPCFI =
// The ZERO register is not really a register, but the representation of r0
// when used in instructions that treat r0 as the constant 0.
Reserved.set(PPC::ZERO);
+ Reserved.set(PPC::ZERO8);
+
+ // The FP register is also not really a register, but is the representation
+ // of the frame pointer register used by ISD::FRAMEADDR.
+ Reserved.set(PPC::FP);
+ Reserved.set(PPC::FP8);
- Reserved.set(PPC::R0);
Reserved.set(PPC::R1);
Reserved.set(PPC::LR);
Reserved.set(PPC::LR8);
if (Subtarget.isPPC64()) {
Reserved.set(PPC::R13);
- Reserved.set(PPC::X0);
Reserved.set(PPC::X1);
Reserved.set(PPC::X13);
/// stwxu R0, SP, Rnegsize ; add and update the SP with the negated size
/// addi Rnew, SP, \#maxCalFrameSize ; get the top of the allocation
///
-void PPCRegisterInfo::lowerDynamicAlloc(MachineBasicBlock::iterator II,
- int SPAdj, RegScavenger *RS) const {
+void PPCRegisterInfo::lowerDynamicAlloc(MachineBasicBlock::iterator II) const {
// Get the instruction.
MachineInstr &MI = *II;
// Get the instruction's basic block.
/// stw rA, FI ; Store rA to the frame.
///
void PPCRegisterInfo::lowerCRSpilling(MachineBasicBlock::iterator II,
- unsigned FrameIndex, int SPAdj,
- RegScavenger *RS) const {
+ unsigned FrameIndex) const {
// Get the instruction.
MachineInstr &MI = *II; // ; SPILL_CR <SrcReg>, <offset>
// Get the instruction's basic block.
MachineBasicBlock &MBB = *MI.getParent();
+ MachineFunction &MF = *MBB.getParent();
DebugLoc dl = MI.getDebugLoc();
- // FIXME: Once LLVM supports creating virtual registers here, or the register
- // scavenger can return multiple registers, stop using reserved registers
- // here.
- (void) SPAdj;
- (void) RS;
-
bool LP64 = Subtarget.isPPC64();
- unsigned Reg = LP64 ? PPC::X0 : PPC::R0;
+ const TargetRegisterClass *G8RC = &PPC::G8RCRegClass;
+ const TargetRegisterClass *GPRC = &PPC::GPRCRegClass;
+
+ unsigned Reg = MF.getRegInfo().createVirtualRegister(LP64 ? G8RC : GPRC);
unsigned SrcReg = MI.getOperand(0).getReg();
// We need to store the CR in the low 4-bits of the saved value. First, issue
// If the saved register wasn't CR0, shift the bits left so that they are in
// CR0's slot.
- if (SrcReg != PPC::CR0)
+ if (SrcReg != PPC::CR0) {
+ unsigned Reg1 = Reg;
+ Reg = MF.getRegInfo().createVirtualRegister(LP64 ? G8RC : GPRC);
+
// rlwinm rA, rA, ShiftBits, 0, 31.
BuildMI(MBB, II, dl, TII.get(LP64 ? PPC::RLWINM8 : PPC::RLWINM), Reg)
- .addReg(Reg, RegState::Kill)
- .addImm(getPPCRegisterNumbering(SrcReg) * 4)
+ .addReg(Reg1, RegState::Kill)
+ .addImm(getEncodingValue(SrcReg) * 4)
.addImm(0)
.addImm(31);
+ }
addFrameReference(BuildMI(MBB, II, dl, TII.get(LP64 ? PPC::STW8 : PPC::STW))
.addReg(Reg, getKillRegState(MI.getOperand(1).getImm())),
}
void PPCRegisterInfo::lowerCRRestore(MachineBasicBlock::iterator II,
- unsigned FrameIndex, int SPAdj,
- RegScavenger *RS) const {
+ unsigned FrameIndex) const {
// Get the instruction.
MachineInstr &MI = *II; // ; <DestReg> = RESTORE_CR <offset>
// Get the instruction's basic block.
MachineBasicBlock &MBB = *MI.getParent();
+ MachineFunction &MF = *MBB.getParent();
DebugLoc dl = MI.getDebugLoc();
- // FIXME: Once LLVM supports creating virtual registers here, or the register
- // scavenger can return multiple registers, stop using reserved registers
- // here.
- (void) SPAdj;
- (void) RS;
-
bool LP64 = Subtarget.isPPC64();
- unsigned Reg = LP64 ? PPC::X0 : PPC::R0;
+ const TargetRegisterClass *G8RC = &PPC::G8RCRegClass;
+ const TargetRegisterClass *GPRC = &PPC::GPRCRegClass;
+
+ unsigned Reg = MF.getRegInfo().createVirtualRegister(LP64 ? G8RC : GPRC);
unsigned DestReg = MI.getOperand(0).getReg();
assert(MI.definesRegister(DestReg) &&
"RESTORE_CR does not define its destination");
// If the reloaded register isn't CR0, shift the bits right so that they are
// in the right CR's slot.
if (DestReg != PPC::CR0) {
- unsigned ShiftBits = getPPCRegisterNumbering(DestReg)*4;
+ unsigned Reg1 = Reg;
+ Reg = MF.getRegInfo().createVirtualRegister(LP64 ? G8RC : GPRC);
+
+ unsigned ShiftBits = getEncodingValue(DestReg)*4;
// rlwinm r11, r11, 32-ShiftBits, 0, 31.
BuildMI(MBB, II, dl, TII.get(LP64 ? PPC::RLWINM8 : PPC::RLWINM), Reg)
- .addReg(Reg).addImm(32-ShiftBits).addImm(0)
+ .addReg(Reg1, RegState::Kill).addImm(32-ShiftBits).addImm(0)
.addImm(31);
}
BuildMI(MBB, II, dl, TII.get(LP64 ? PPC::MTCRF8 : PPC::MTCRF), DestReg)
- .addReg(Reg);
+ .addReg(Reg, RegState::Kill);
+
+ // Discard the pseudo instruction.
+ MBB.erase(II);
+}
+
+void PPCRegisterInfo::lowerVRSAVESpilling(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const {
+ // Get the instruction.
+ MachineInstr &MI = *II; // ; SPILL_VRSAVE <SrcReg>, <offset>
+ // Get the instruction's basic block.
+ MachineBasicBlock &MBB = *MI.getParent();
+ MachineFunction &MF = *MBB.getParent();
+ DebugLoc dl = MI.getDebugLoc();
+
+ const TargetRegisterClass *GPRC = &PPC::GPRCRegClass;
+ unsigned Reg = MF.getRegInfo().createVirtualRegister(GPRC);
+ unsigned SrcReg = MI.getOperand(0).getReg();
+
+ BuildMI(MBB, II, dl, TII.get(PPC::MFVRSAVEv), Reg)
+ .addReg(SrcReg, getKillRegState(MI.getOperand(0).isKill()));
+
+ addFrameReference(BuildMI(MBB, II, dl, TII.get(PPC::STW))
+ .addReg(Reg, getKillRegState(MI.getOperand(1).getImm())),
+ FrameIndex);
+
+ // Discard the pseudo instruction.
+ MBB.erase(II);
+}
+
+void PPCRegisterInfo::lowerVRSAVERestore(MachineBasicBlock::iterator II,
+ unsigned FrameIndex) const {
+ // Get the instruction.
+ MachineInstr &MI = *II; // ; <DestReg> = RESTORE_VRSAVE <offset>
+ // Get the instruction's basic block.
+ MachineBasicBlock &MBB = *MI.getParent();
+ MachineFunction &MF = *MBB.getParent();
+ DebugLoc dl = MI.getDebugLoc();
+
+ const TargetRegisterClass *GPRC = &PPC::GPRCRegClass;
+ unsigned Reg = MF.getRegInfo().createVirtualRegister(GPRC);
+ unsigned DestReg = MI.getOperand(0).getReg();
+ assert(MI.definesRegister(DestReg) &&
+ "RESTORE_VRSAVE does not define its destination");
+
+ addFrameReference(BuildMI(MBB, II, dl, TII.get(PPC::LWZ),
+ Reg), FrameIndex);
+
+ BuildMI(MBB, II, dl, TII.get(PPC::MTVRSAVEv), DestReg)
+ .addReg(Reg, RegState::Kill);
// Discard the pseudo instruction.
MBB.erase(II);
// Special case for dynamic alloca.
if (FPSI && FrameIndex == FPSI &&
(OpC == PPC::DYNALLOC || OpC == PPC::DYNALLOC8)) {
- lowerDynamicAlloc(II, SPAdj, RS);
+ lowerDynamicAlloc(II);
return;
}
- // Special case for pseudo-ops SPILL_CR and RESTORE_CR.
+ // Special case for pseudo-ops SPILL_CR and RESTORE_CR, etc.
if (OpC == PPC::SPILL_CR) {
- lowerCRSpilling(II, FrameIndex, SPAdj, RS);
+ lowerCRSpilling(II, FrameIndex);
return;
} else if (OpC == PPC::RESTORE_CR) {
- lowerCRRestore(II, FrameIndex, SPAdj, RS);
+ lowerCRRestore(II, FrameIndex);
+ return;
+ } else if (OpC == PPC::SPILL_VRSAVE) {
+ lowerVRSAVESpilling(II, FrameIndex);
+ return;
+ } else if (OpC == PPC::RESTORE_VRSAVE) {
+ lowerVRSAVERestore(II, FrameIndex);
return;
}
const TargetRegisterClass *G8RC = &PPC::G8RCRegClass;
const TargetRegisterClass *GPRC = &PPC::GPRCRegClass;
- unsigned SReg = MF.getRegInfo().createVirtualRegister(is64Bit ? G8RC : GPRC);
+ const TargetRegisterClass *RC = is64Bit ? G8RC : GPRC;
+ unsigned SRegHi = MF.getRegInfo().createVirtualRegister(RC),
+ SReg = MF.getRegInfo().createVirtualRegister(RC);
// Insert a set of rA with the full offset value before the ld, st, or add
- BuildMI(MBB, II, dl, TII.get(is64Bit ? PPC::LIS8 : PPC::LIS), SReg)
+ BuildMI(MBB, II, dl, TII.get(is64Bit ? PPC::LIS8 : PPC::LIS), SRegHi)
.addImm(Offset >> 16);
BuildMI(MBB, II, dl, TII.get(is64Bit ? PPC::ORI8 : PPC::ORI), SReg)
- .addReg(SReg, RegState::Kill)
+ .addReg(SRegHi, RegState::Kill)
.addImm(Offset);
// Convert into indexed form of the instruction:
projects / oota-llvm.git / blobdiff