//===----------------------------------------------------------------------===//
#include "PPCInstrInfo.h"
+#include "PPC.h"
#include "PPCInstrBuilder.h"
#include "PPCMachineFunctionInfo.h"
-#include "PPCPredicates.h"
-#include "PPCGenInstrInfo.inc"
#include "PPCTargetMachine.h"
-#include "llvm/ADT/STLExtras.h"
+#include "PPCHazardRecognizers.h"
+#include "MCTargetDesc/PPCPredicates.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/MC/MCAsmInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/ADT/STLExtras.h"
+
+#define GET_INSTRINFO_CTOR
+#include "PPCGenInstrInfo.inc"
namespace llvm {
extern cl::opt<bool> EnablePPC32RS; // FIXME (64-bit): See PPCRegisterInfo.cpp.
using namespace llvm;
PPCInstrInfo::PPCInstrInfo(PPCTargetMachine &tm)
- : TargetInstrInfoImpl(PPCInsts, array_lengthof(PPCInsts)), TM(tm),
- RI(*TM.getSubtargetImpl(), *this) {}
-
-bool PPCInstrInfo::isMoveInstr(const MachineInstr& MI,
- unsigned& sourceReg,
- unsigned& destReg,
- unsigned& sourceSubIdx,
- unsigned& destSubIdx) const {
- sourceSubIdx = destSubIdx = 0; // No sub-registers.
-
- unsigned oc = MI.getOpcode();
- if (oc == PPC::OR || oc == PPC::OR8 || oc == PPC::VOR ||
- oc == PPC::OR4To8 || oc == PPC::OR8To4) { // or r1, r2, r2
- assert(MI.getNumOperands() >= 3 &&
- MI.getOperand(0).isReg() &&
- MI.getOperand(1).isReg() &&
- MI.getOperand(2).isReg() &&
- "invalid PPC OR instruction!");
- if (MI.getOperand(1).getReg() == MI.getOperand(2).getReg()) {
- sourceReg = MI.getOperand(1).getReg();
- destReg = MI.getOperand(0).getReg();
- return true;
- }
- } else if (oc == PPC::ADDI) { // addi r1, r2, 0
- assert(MI.getNumOperands() >= 3 &&
- MI.getOperand(0).isReg() &&
- MI.getOperand(2).isImm() &&
- "invalid PPC ADDI instruction!");
- if (MI.getOperand(1).isReg() && MI.getOperand(2).getImm() == 0) {
- sourceReg = MI.getOperand(1).getReg();
- destReg = MI.getOperand(0).getReg();
- return true;
- }
- } else if (oc == PPC::ORI) { // ori r1, r2, 0
- assert(MI.getNumOperands() >= 3 &&
- MI.getOperand(0).isReg() &&
- MI.getOperand(1).isReg() &&
- MI.getOperand(2).isImm() &&
- "invalid PPC ORI instruction!");
- if (MI.getOperand(2).getImm() == 0) {
- sourceReg = MI.getOperand(1).getReg();
- destReg = MI.getOperand(0).getReg();
- return true;
- }
- } else if (oc == PPC::FMR || oc == PPC::FMRSD) { // fmr r1, r2
- assert(MI.getNumOperands() >= 2 &&
- MI.getOperand(0).isReg() &&
- MI.getOperand(1).isReg() &&
- "invalid PPC FMR instruction");
- sourceReg = MI.getOperand(1).getReg();
- destReg = MI.getOperand(0).getReg();
- return true;
- } else if (oc == PPC::MCRF) { // mcrf cr1, cr2
- assert(MI.getNumOperands() >= 2 &&
- MI.getOperand(0).isReg() &&
- MI.getOperand(1).isReg() &&
- "invalid PPC MCRF instruction");
- sourceReg = MI.getOperand(1).getReg();
- destReg = MI.getOperand(0).getReg();
- return true;
+ : PPCGenInstrInfo(PPC::ADJCALLSTACKDOWN, PPC::ADJCALLSTACKUP),
+ TM(tm), RI(*TM.getSubtargetImpl(), *this) {}
+
+/// CreateTargetHazardRecognizer - Return the hazard recognizer to use for
+/// this target when scheduling the DAG.
+ScheduleHazardRecognizer *PPCInstrInfo::CreateTargetHazardRecognizer(
+ const TargetMachine *TM,
+ const ScheduleDAG *DAG) const {
+ // Should use subtarget info to pick the right hazard recognizer. For
+ // now, always return a PPC970 recognizer.
+ const TargetInstrInfo *TII = TM->getInstrInfo();
+ (void)TII;
+ assert(TII && "No InstrInfo?");
+
+ unsigned Directive = TM->getSubtarget<PPCSubtarget>().getDarwinDirective();
+ if (Directive == PPC::DIR_440) {
+ // Disable the hazard recognizer for now, as it doesn't support
+ // bottom-up scheduling.
+ //const InstrItineraryData *II = TM->getInstrItineraryData();
+ //return new PPCHazardRecognizer440(II, DAG);
+ return new ScheduleHazardRecognizer();
+ }
+ else {
+ // Disable the hazard recognizer for now, as it doesn't support
+ // bottom-up scheduling.
+ //return new PPCHazardRecognizer970(*TII);
+ return new ScheduleHazardRecognizer();
}
- return false;
}
-unsigned PPCInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
+unsigned PPCInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
switch (MI->getOpcode()) {
default: break;
return 0;
}
-unsigned PPCInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
+unsigned PPCInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
int &FrameIndex) const {
switch (MI->getOpcode()) {
default: break;
// Normal instructions can be commuted the obvious way.
if (MI->getOpcode() != PPC::RLWIMI)
return TargetInstrInfoImpl::commuteInstruction(MI, NewMI);
-
+
// Cannot commute if it has a non-zero rotate count.
if (MI->getOperand(3).getImm() != 0)
return 0;
-
+
// If we have a zero rotate count, we have:
// M = mask(MB,ME)
// Op0 = (Op1 & ~M) | (Op2 & M)
// destination register as well.
if (Reg0 == Reg1) {
// Must be two address instruction!
- assert(MI->getDesc().getOperandConstraint(0, TOI::TIED_TO) &&
+ assert(MI->getDesc().getOperandConstraint(0, MCOI::TIED_TO) &&
"Expecting a two-address instruction!");
Reg2IsKill = false;
ChangeReg0 = true;
MI->getOperand(1).setReg(Reg2);
MI->getOperand(2).setIsKill(Reg1IsKill);
MI->getOperand(1).setIsKill(Reg2IsKill);
-
+
// Swap the mask around.
MI->getOperand(4).setImm((ME+1) & 31);
MI->getOperand(5).setImm((MB-1) & 31);
return MI;
}
-void PPCInstrInfo::insertNoop(MachineBasicBlock &MBB,
+void PPCInstrInfo::insertNoop(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI) const {
DebugLoc DL;
BuildMI(MBB, MI, DL, get(PPC::NOP));
// Get the last instruction in the block.
MachineInstr *LastInst = I;
-
+
// If there is only one terminator instruction, process it.
if (I == MBB.begin() || !isUnpredicatedTerminator(--I)) {
if (LastInst->getOpcode() == PPC::B) {
// Otherwise, don't know what this is.
return true;
}
-
+
// Get the instruction before it if it's a terminator.
MachineInstr *SecondLastInst = I;
if (SecondLastInst && I != MBB.begin() &&
isUnpredicatedTerminator(--I))
return true;
-
+
// If the block ends with PPC::B and PPC:BCC, handle it.
- if (SecondLastInst->getOpcode() == PPC::BCC &&
+ if (SecondLastInst->getOpcode() == PPC::BCC &&
LastInst->getOpcode() == PPC::B) {
if (!SecondLastInst->getOperand(2).isMBB() ||
!LastInst->getOperand(0).isMBB())
FBB = LastInst->getOperand(0).getMBB();
return false;
}
-
+
// If the block ends with two PPC:Bs, handle it. The second one is not
// executed, so remove it.
- if (SecondLastInst->getOpcode() == PPC::B &&
+ if (SecondLastInst->getOpcode() == PPC::B &&
LastInst->getOpcode() == PPC::B) {
if (!SecondLastInst->getOperand(0).isMBB())
return true;
}
if (I->getOpcode() != PPC::B && I->getOpcode() != PPC::BCC)
return 0;
-
+
// Remove the branch.
I->eraseFromParent();
-
+
I = MBB.end();
if (I == MBB.begin()) return 1;
--I;
if (I->getOpcode() != PPC::BCC)
return 1;
-
+
// Remove the branch.
I->eraseFromParent();
return 2;
unsigned
PPCInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
- const SmallVectorImpl<MachineOperand> &Cond) const {
- // FIXME this should probably have a DebugLoc argument
- DebugLoc dl;
+ const SmallVectorImpl<MachineOperand> &Cond,
+ DebugLoc DL) const {
// Shouldn't be a fall through.
assert(TBB && "InsertBranch must not be told to insert a fallthrough");
- assert((Cond.size() == 2 || Cond.size() == 0) &&
+ assert((Cond.size() == 2 || Cond.size() == 0) &&
"PPC branch conditions have two components!");
-
+
// One-way branch.
if (FBB == 0) {
if (Cond.empty()) // Unconditional branch
- BuildMI(&MBB, dl, get(PPC::B)).addMBB(TBB);
+ BuildMI(&MBB, DL, get(PPC::B)).addMBB(TBB);
else // Conditional branch
- BuildMI(&MBB, dl, get(PPC::BCC))
+ BuildMI(&MBB, DL, get(PPC::BCC))
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB);
return 1;
}
-
+
// Two-way Conditional Branch.
- BuildMI(&MBB, dl, get(PPC::BCC))
+ BuildMI(&MBB, DL, get(PPC::BCC))
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg()).addMBB(TBB);
- BuildMI(&MBB, dl, get(PPC::B)).addMBB(FBB);
+ BuildMI(&MBB, DL, get(PPC::B)).addMBB(FBB);
return 2;
}
-bool PPCInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *DestRC,
- const TargetRegisterClass *SrcRC) const {
- if (DestRC != SrcRC) {
- // Not yet supported!
- return false;
- }
-
- DebugLoc DL;
- if (MI != MBB.end()) DL = MI->getDebugLoc();
-
- if (DestRC == PPC::GPRCRegisterClass) {
- BuildMI(MBB, MI, DL, get(PPC::OR), DestReg).addReg(SrcReg).addReg(SrcReg);
- } else if (DestRC == PPC::G8RCRegisterClass) {
- BuildMI(MBB, MI, DL, get(PPC::OR8), DestReg).addReg(SrcReg).addReg(SrcReg);
- } else if (DestRC == PPC::F4RCRegisterClass ||
- DestRC == PPC::F8RCRegisterClass) {
- BuildMI(MBB, MI, DL, get(PPC::FMR), DestReg).addReg(SrcReg);
- } else if (DestRC == PPC::CRRCRegisterClass) {
- BuildMI(MBB, MI, DL, get(PPC::MCRF), DestReg).addReg(SrcReg);
- } else if (DestRC == PPC::VRRCRegisterClass) {
- BuildMI(MBB, MI, DL, get(PPC::VOR), DestReg).addReg(SrcReg).addReg(SrcReg);
- } else if (DestRC == PPC::CRBITRCRegisterClass) {
- BuildMI(MBB, MI, DL, get(PPC::CROR), DestReg).addReg(SrcReg).addReg(SrcReg);
- } else {
- // Attempt to copy register that is not GPR or FPR
- return false;
- }
-
- return true;
+void PPCInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I, DebugLoc DL,
+ unsigned DestReg, unsigned SrcReg,
+ bool KillSrc) const {
+ unsigned Opc;
+ if (PPC::GPRCRegClass.contains(DestReg, SrcReg))
+ Opc = PPC::OR;
+ else if (PPC::G8RCRegClass.contains(DestReg, SrcReg))
+ Opc = PPC::OR8;
+ else if (PPC::F4RCRegClass.contains(DestReg, SrcReg))
+ Opc = PPC::FMR;
+ else if (PPC::CRRCRegClass.contains(DestReg, SrcReg))
+ Opc = PPC::MCRF;
+ else if (PPC::VRRCRegClass.contains(DestReg, SrcReg))
+ Opc = PPC::VOR;
+ else if (PPC::CRBITRCRegClass.contains(DestReg, SrcReg))
+ Opc = PPC::CROR;
+ else
+ llvm_unreachable("Impossible reg-to-reg copy");
+
+ const MCInstrDesc &MCID = get(Opc);
+ if (MCID.getNumOperands() == 3)
+ BuildMI(MBB, I, DL, MCID, DestReg)
+ .addReg(SrcReg).addReg(SrcReg, getKillRegState(KillSrc));
+ else
+ BuildMI(MBB, I, DL, MCID, DestReg).addReg(SrcReg, getKillRegState(KillSrc));
}
bool
const TargetRegisterClass *RC,
SmallVectorImpl<MachineInstr*> &NewMIs) const{
DebugLoc DL;
- if (RC == PPC::GPRCRegisterClass) {
+ if (PPC::GPRCRegisterClass->hasSubClassEq(RC)) {
if (SrcReg != PPC::LR) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STW))
.addReg(SrcReg,
getKillRegState(isKill)),
FrameIdx));
}
- } else if (RC == PPC::G8RCRegisterClass) {
+ } else if (PPC::G8RCRegisterClass->hasSubClassEq(RC)) {
if (SrcReg != PPC::LR8) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STD))
.addReg(SrcReg,
getKillRegState(isKill)),
FrameIdx));
}
- } else if (RC == PPC::F8RCRegisterClass) {
+ } else if (PPC::F8RCRegisterClass->hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STFD))
.addReg(SrcReg,
getKillRegState(isKill)),
FrameIdx));
- } else if (RC == PPC::F4RCRegisterClass) {
+ } else if (PPC::F4RCRegisterClass->hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STFS))
.addReg(SrcReg,
getKillRegState(isKill)),
FrameIdx));
- } else if (RC == PPC::CRRCRegisterClass) {
+ } else if (PPC::CRRCRegisterClass->hasSubClassEq(RC)) {
if ((EnablePPC32RS && !TM.getSubtargetImpl()->isPPC64()) ||
(EnablePPC64RS && TM.getSubtargetImpl()->isPPC64())) {
// FIXME (64-bit): Enable
// We need to store the CR in the low 4-bits of the saved value. First,
// issue a MFCR to save all of the CRBits.
- unsigned ScratchReg = TM.getSubtargetImpl()->isDarwinABI() ?
+ unsigned ScratchReg = TM.getSubtargetImpl()->isDarwinABI() ?
PPC::R2 : PPC::R0;
- NewMIs.push_back(BuildMI(MF, DL, get(PPC::MFCR), ScratchReg));
-
+ NewMIs.push_back(BuildMI(MF, DL, get(PPC::MFCRpseud), ScratchReg)
+ .addReg(SrcReg, getKillRegState(isKill)));
+
// If the saved register wasn't CR0, shift the bits left so that they are
// in CR0's slot.
if (SrcReg != PPC::CR0) {
- unsigned ShiftBits = PPCRegisterInfo::getRegisterNumbering(SrcReg)*4;
+ unsigned ShiftBits = getPPCRegisterNumbering(SrcReg)*4;
// rlwinm scratch, scratch, ShiftBits, 0, 31.
NewMIs.push_back(BuildMI(MF, DL, get(PPC::RLWINM), ScratchReg)
.addReg(ScratchReg).addImm(ShiftBits)
.addImm(0).addImm(31));
}
-
+
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::STW))
.addReg(ScratchReg,
getKillRegState(isKill)),
FrameIdx));
}
- } else if (RC == PPC::CRBITRCRegisterClass) {
+ } else if (PPC::CRBITRCRegisterClass->hasSubClassEq(RC)) {
// FIXME: We use CRi here because there is no mtcrf on a bit. Since the
// backend currently only uses CR1EQ as an individual bit, this should
// not cause any bug. If we need other uses of CR bits, the following
SrcReg == PPC::CR7EQ || SrcReg == PPC::CR7UN)
Reg = PPC::CR7;
- return StoreRegToStackSlot(MF, Reg, isKill, FrameIdx,
+ return StoreRegToStackSlot(MF, Reg, isKill, FrameIdx,
PPC::CRRCRegisterClass, NewMIs);
- } else if (RC == PPC::VRRCRegisterClass) {
+ } else if (PPC::VRRCRegisterClass->hasSubClassEq(RC)) {
// We don't have indexed addressing for vector loads. Emit:
// R0 = ADDI FI#
// STVX VAL, 0, R0
- //
+ //
// FIXME: We use R0 here, because it isn't available for RA.
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::ADDI), PPC::R0),
FrameIdx, 0, 0));
PPCInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, bool isKill, int FrameIdx,
- const TargetRegisterClass *RC) const {
+ const TargetRegisterClass *RC,
+ const TargetRegisterInfo *TRI) const {
MachineFunction &MF = *MBB.getParent();
SmallVector<MachineInstr*, 4> NewMIs;
for (unsigned i = 0, e = NewMIs.size(); i != e; ++i)
MBB.insert(MI, NewMIs[i]);
+
+ const MachineFrameInfo &MFI = *MF.getFrameInfo();
+ MachineMemOperand *MMO =
+ MF.getMachineMemOperand(
+ MachinePointerInfo(PseudoSourceValue::getFixedStack(FrameIdx)),
+ MachineMemOperand::MOStore,
+ MFI.getObjectSize(FrameIdx),
+ MFI.getObjectAlignment(FrameIdx));
+ NewMIs.back()->addMemOperand(MF, MMO);
}
void
unsigned DestReg, int FrameIdx,
const TargetRegisterClass *RC,
SmallVectorImpl<MachineInstr*> &NewMIs)const{
- if (RC == PPC::GPRCRegisterClass) {
+ if (PPC::GPRCRegisterClass->hasSubClassEq(RC)) {
if (DestReg != PPC::LR) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LWZ),
DestReg), FrameIdx));
PPC::R11), FrameIdx));
NewMIs.push_back(BuildMI(MF, DL, get(PPC::MTLR)).addReg(PPC::R11));
}
- } else if (RC == PPC::G8RCRegisterClass) {
+ } else if (PPC::G8RCRegisterClass->hasSubClassEq(RC)) {
if (DestReg != PPC::LR8) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LD), DestReg),
FrameIdx));
PPC::R11), FrameIdx));
NewMIs.push_back(BuildMI(MF, DL, get(PPC::MTLR8)).addReg(PPC::R11));
}
- } else if (RC == PPC::F8RCRegisterClass) {
+ } else if (PPC::F8RCRegisterClass->hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LFD), DestReg),
FrameIdx));
- } else if (RC == PPC::F4RCRegisterClass) {
+ } else if (PPC::F4RCRegisterClass->hasSubClassEq(RC)) {
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LFS), DestReg),
FrameIdx));
- } else if (RC == PPC::CRRCRegisterClass) {
+ } else if (PPC::CRRCRegisterClass->hasSubClassEq(RC)) {
// FIXME: We need a scatch reg here. The trouble with using R0 is that
// it's possible for the stack frame to be so big the save location is
// out of range of immediate offsets, necessitating another register.
// at the moment.
unsigned ScratchReg = TM.getSubtargetImpl()->isDarwinABI() ?
PPC::R2 : PPC::R0;
- NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LWZ),
+ NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::LWZ),
ScratchReg), FrameIdx));
-
+
// 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 = PPCRegisterInfo::getRegisterNumbering(DestReg)*4;
+ unsigned ShiftBits = getPPCRegisterNumbering(DestReg)*4;
// rlwinm r11, r11, 32-ShiftBits, 0, 31.
NewMIs.push_back(BuildMI(MF, DL, get(PPC::RLWINM), ScratchReg)
.addReg(ScratchReg).addImm(32-ShiftBits).addImm(0)
.addImm(31));
}
-
+
NewMIs.push_back(BuildMI(MF, DL, get(PPC::MTCRF), DestReg)
.addReg(ScratchReg));
- } else if (RC == PPC::CRBITRCRegisterClass) {
-
+ } else if (PPC::CRBITRCRegisterClass->hasSubClassEq(RC)) {
+
unsigned Reg = 0;
if (DestReg == PPC::CR0LT || DestReg == PPC::CR0GT ||
DestReg == PPC::CR0EQ || DestReg == PPC::CR0UN)
DestReg == PPC::CR7EQ || DestReg == PPC::CR7UN)
Reg = PPC::CR7;
- return LoadRegFromStackSlot(MF, DL, Reg, FrameIdx,
+ return LoadRegFromStackSlot(MF, DL, Reg, FrameIdx,
PPC::CRRCRegisterClass, NewMIs);
- } else if (RC == PPC::VRRCRegisterClass) {
+ } else if (PPC::VRRCRegisterClass->hasSubClassEq(RC)) {
// We don't have indexed addressing for vector loads. Emit:
// R0 = ADDI FI#
// Dest = LVX 0, R0
- //
+ //
// FIXME: We use R0 here, because it isn't available for RA.
NewMIs.push_back(addFrameReference(BuildMI(MF, DL, get(PPC::ADDI), PPC::R0),
FrameIdx, 0, 0));
PPCInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIdx,
- const TargetRegisterClass *RC) const {
+ const TargetRegisterClass *RC,
+ const TargetRegisterInfo *TRI) const {
MachineFunction &MF = *MBB.getParent();
SmallVector<MachineInstr*, 4> NewMIs;
DebugLoc DL;
LoadRegFromStackSlot(MF, DL, DestReg, FrameIdx, RC, NewMIs);
for (unsigned i = 0, e = NewMIs.size(); i != e; ++i)
MBB.insert(MI, NewMIs[i]);
+
+ const MachineFrameInfo &MFI = *MF.getFrameInfo();
+ MachineMemOperand *MMO =
+ MF.getMachineMemOperand(
+ MachinePointerInfo(PseudoSourceValue::getFixedStack(FrameIdx)),
+ MachineMemOperand::MOLoad,
+ MFI.getObjectSize(FrameIdx),
+ MFI.getObjectAlignment(FrameIdx));
+ NewMIs.back()->addMemOperand(MF, MMO);
}
MachineInstr*
return &*MIB;
}
-/// foldMemoryOperand - PowerPC (like most RISC's) can only fold spills into
-/// copy instructions, turning them into load/store instructions.
-MachineInstr *PPCInstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
- MachineInstr *MI,
- const SmallVectorImpl<unsigned> &Ops,
- int FrameIndex) const {
- if (Ops.size() != 1) return NULL;
-
- // Make sure this is a reg-reg copy. Note that we can't handle MCRF, because
- // it takes more than one instruction to store it.
- unsigned Opc = MI->getOpcode();
- unsigned OpNum = Ops[0];
-
- MachineInstr *NewMI = NULL;
- if ((Opc == PPC::OR &&
- MI->getOperand(1).getReg() == MI->getOperand(2).getReg())) {
- if (OpNum == 0) { // move -> store
- unsigned InReg = MI->getOperand(1).getReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- NewMI = addFrameReference(BuildMI(MF, MI->getDebugLoc(), get(PPC::STW))
- .addReg(InReg,
- getKillRegState(isKill) |
- getUndefRegState(isUndef)),
- FrameIndex);
- } else { // move -> load
- unsigned OutReg = MI->getOperand(0).getReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- NewMI = addFrameReference(BuildMI(MF, MI->getDebugLoc(), get(PPC::LWZ))
- .addReg(OutReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef)),
- FrameIndex);
- }
- } else if ((Opc == PPC::OR8 &&
- MI->getOperand(1).getReg() == MI->getOperand(2).getReg())) {
- if (OpNum == 0) { // move -> store
- unsigned InReg = MI->getOperand(1).getReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- NewMI = addFrameReference(BuildMI(MF, MI->getDebugLoc(), get(PPC::STD))
- .addReg(InReg,
- getKillRegState(isKill) |
- getUndefRegState(isUndef)),
- FrameIndex);
- } else { // move -> load
- unsigned OutReg = MI->getOperand(0).getReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- NewMI = addFrameReference(BuildMI(MF, MI->getDebugLoc(), get(PPC::LD))
- .addReg(OutReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef)),
- FrameIndex);
- }
- } else if (Opc == PPC::FMR || Opc == PPC::FMRSD) {
- // The register may be F4RC or F8RC, and that determines the memory op.
- unsigned OrigReg = MI->getOperand(OpNum).getReg();
- // We cannot tell the register class from a physreg alone.
- if (TargetRegisterInfo::isPhysicalRegister(OrigReg))
- return NULL;
- const TargetRegisterClass *RC = MF.getRegInfo().getRegClass(OrigReg);
- const bool is64 = RC == PPC::F8RCRegisterClass;
-
- if (OpNum == 0) { // move -> store
- unsigned InReg = MI->getOperand(1).getReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- NewMI = addFrameReference(BuildMI(MF, MI->getDebugLoc(),
- get(is64 ? PPC::STFD : PPC::STFS))
- .addReg(InReg,
- getKillRegState(isKill) |
- getUndefRegState(isUndef)),
- FrameIndex);
- } else { // move -> load
- unsigned OutReg = MI->getOperand(0).getReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- NewMI = addFrameReference(BuildMI(MF, MI->getDebugLoc(),
- get(is64 ? PPC::LFD : PPC::LFS))
- .addReg(OutReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef)),
- FrameIndex);
- }
- }
-
- return NewMI;
-}
-
-bool PPCInstrInfo::canFoldMemoryOperand(const MachineInstr *MI,
- const SmallVectorImpl<unsigned> &Ops) const {
- if (Ops.size() != 1) return false;
-
- // Make sure this is a reg-reg copy. Note that we can't handle MCRF, because
- // it takes more than one instruction to store it.
- unsigned Opc = MI->getOpcode();
-
- if ((Opc == PPC::OR &&
- MI->getOperand(1).getReg() == MI->getOperand(2).getReg()))
- return true;
- else if ((Opc == PPC::OR8 &&
- MI->getOperand(1).getReg() == MI->getOperand(2).getReg()))
- return true;
- else if (Opc == PPC::FMR || Opc == PPC::FMRSD)
- return true;
-
- return false;
-}
-
-
bool PPCInstrInfo::
ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
assert(Cond.size() == 2 && "Invalid PPC branch opcode!");
const char *AsmStr = MI->getOperand(0).getSymbolName();
return getInlineAsmLength(AsmStr, *MF->getTarget().getMCAsmInfo());
}
- case PPC::DBG_LABEL:
+ case PPC::PROLOG_LABEL:
case PPC::EH_LABEL:
case PPC::GC_LABEL:
case PPC::DBG_VALUE:
projects / oota-llvm.git / blobdiff