-//===- Thumb1InstrInfo.cpp - Thumb-1 Instruction Information --------*- C++ -*-===//
+//===- Thumb1InstrInfo.cpp - Thumb-1 Instruction Information ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
-#include "ARMInstrInfo.h"
+#include "Thumb1InstrInfo.h"
#include "ARM.h"
#include "ARMGenInstrInfo.inc"
#include "ARMMachineFunctionInfo.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/ADT/SmallVector.h"
#include "Thumb1InstrInfo.h"
return 0;
}
-unsigned Thumb1InstrInfo::getOpcode(ARMII::Op Op) const {
- switch (Op) {
- case ARMII::ADDri: return ARM::tADDi8;
- case ARMII::ADDrs: return 0;
- case ARMII::ADDrr: return ARM::tADDrr;
- case ARMII::B: return ARM::tB;
- case ARMII::Bcc: return ARM::tBcc;
- case ARMII::BR_JTr: return ARM::tBR_JTr;
- case ARMII::BR_JTm: return 0;
- case ARMII::BR_JTadd: return 0;
- case ARMII::BX_RET: return ARM::tBX_RET;
- case ARMII::FCPYS: return 0;
- case ARMII::FCPYD: return 0;
- case ARMII::FLDD: return 0;
- case ARMII::FLDS: return 0;
- case ARMII::FSTD: return 0;
- case ARMII::FSTS: return 0;
- case ARMII::LDRrr: return ARM::tLDR;
- case ARMII::LDRri: return 0;
- case ARMII::MOVr: return ARM::tMOVr;
- case ARMII::STRrr: return ARM::tSTR;
- case ARMII::STRri: return 0;
- case ARMII::SUBri: return ARM::tSUBi8;
- case ARMII::SUBrs: return 0;
- case ARMII::SUBrr: return ARM::tSUBrr;
- case ARMII::VMOVD: return 0;
- case ARMII::VMOVQ: return 0;
- default:
- break;
- }
-
- return 0;
-}
-
-bool
-Thumb1InstrInfo::BlockHasNoFallThrough(const MachineBasicBlock &MBB) const {
- if (MBB.empty()) return false;
-
- switch (MBB.back().getOpcode()) {
- case ARM::tBX_RET:
- case ARM::tBX_RET_vararg:
- case ARM::tPOP_RET:
- case ARM::tB:
- case ARM::tBR_JTr:
- return true;
- default:
- break;
- }
-
- return false;
-}
-
-bool Thumb1InstrInfo::isMoveInstr(const MachineInstr &MI,
- unsigned &SrcReg, unsigned &DstReg,
- unsigned& SrcSubIdx, unsigned& DstSubIdx) const {
- SrcSubIdx = DstSubIdx = 0; // No sub-registers.
-
- unsigned oc = MI.getOpcode();
- switch (oc) {
- default:
- return false;
- case ARM::tMOVr:
- case ARM::tMOVhir2lor:
- case ARM::tMOVlor2hir:
- case ARM::tMOVhir2hir:
- assert(MI.getDesc().getNumOperands() >= 2 &&
- MI.getOperand(0).isReg() &&
- MI.getOperand(1).isReg() &&
- "Invalid Thumb MOV instruction");
- SrcReg = MI.getOperand(1).getReg();
- DstReg = MI.getOperand(0).getReg();
- return true;
- }
-}
-
-unsigned Thumb1InstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
- int &FrameIndex) const {
- switch (MI->getOpcode()) {
- default: break;
- case ARM::tRestore:
- if (MI->getOperand(1).isFI() &&
- MI->getOperand(2).isImm() &&
- MI->getOperand(2).getImm() == 0) {
- FrameIndex = MI->getOperand(1).getIndex();
- return MI->getOperand(0).getReg();
- }
- break;
- }
- return 0;
-}
-
-unsigned Thumb1InstrInfo::isStoreToStackSlot(const MachineInstr *MI,
- int &FrameIndex) const {
- switch (MI->getOpcode()) {
- default: break;
- case ARM::tSpill:
- if (MI->getOperand(1).isFI() &&
- MI->getOperand(2).isImm() &&
- MI->getOperand(2).getImm() == 0) {
- FrameIndex = MI->getOperand(1).getIndex();
- return MI->getOperand(0).getReg();
- }
- break;
- }
- return 0;
-}
-
bool Thumb1InstrInfo::copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DestReg, unsigned SrcReg,
if (DestRC == ARM::GPRRegisterClass) {
if (SrcRC == ARM::GPRRegisterClass) {
- BuildMI(MBB, I, DL, get(ARM::tMOVhir2hir), DestReg).addReg(SrcReg);
+ BuildMI(MBB, I, DL, get(ARM::tMOVgpr2gpr), DestReg).addReg(SrcReg);
return true;
} else if (SrcRC == ARM::tGPRRegisterClass) {
- BuildMI(MBB, I, DL, get(ARM::tMOVlor2hir), DestReg).addReg(SrcReg);
+ BuildMI(MBB, I, DL, get(ARM::tMOVtgpr2gpr), DestReg).addReg(SrcReg);
return true;
}
} else if (DestRC == ARM::tGPRRegisterClass) {
if (SrcRC == ARM::GPRRegisterClass) {
- BuildMI(MBB, I, DL, get(ARM::tMOVhir2lor), DestReg).addReg(SrcReg);
+ BuildMI(MBB, I, DL, get(ARM::tMOVgpr2tgpr), DestReg).addReg(SrcReg);
return true;
} else if (SrcRC == ARM::tGPRRegisterClass) {
BuildMI(MBB, I, DL, get(ARM::tMOVr), DestReg).addReg(SrcReg);
switch (Opc) {
default: break;
case ARM::tMOVr:
- case ARM::tMOVlor2hir:
- case ARM::tMOVhir2lor:
- case ARM::tMOVhir2hir: {
+ case ARM::tMOVtgpr2gpr:
+ case ARM::tMOVgpr2tgpr:
+ case ARM::tMOVgpr2gpr: {
if (OpNum == 0) { // move -> store
unsigned SrcReg = MI->getOperand(1).getReg();
- if (RI.isPhysicalRegister(SrcReg) && !isARMLowRegister(SrcReg))
+ if (TargetRegisterInfo::isPhysicalRegister(SrcReg) &&
+ !isARMLowRegister(SrcReg))
// tSpill cannot take a high register operand.
return false;
} else { // move -> load
unsigned DstReg = MI->getOperand(0).getReg();
- if (RI.isPhysicalRegister(DstReg) && !isARMLowRegister(DstReg))
+ if (TargetRegisterInfo::isPhysicalRegister(DstReg) &&
+ !isARMLowRegister(DstReg))
// tRestore cannot target a high register operand.
return false;
}
DebugLoc DL = DebugLoc::getUnknownLoc();
if (I != MBB.end()) DL = I->getDebugLoc();
- assert(RC == ARM::tGPRRegisterClass && "Unknown regclass!");
-
- if (RC == ARM::tGPRRegisterClass) {
+ assert((RC == ARM::tGPRRegisterClass ||
+ (TargetRegisterInfo::isPhysicalRegister(SrcReg) &&
+ isARMLowRegister(SrcReg))) && "Unknown regclass!");
+
+ if (RC == ARM::tGPRRegisterClass ||
+ (TargetRegisterInfo::isPhysicalRegister(SrcReg) &&
+ isARMLowRegister(SrcReg))) {
+ MachineFunction &MF = *MBB.getParent();
+ MachineFrameInfo &MFI = *MF.getFrameInfo();
+ MachineMemOperand *MMO =
+ MF.getMachineMemOperand(PseudoSourceValue::getFixedStack(FI),
+ MachineMemOperand::MOStore, 0,
+ MFI.getObjectSize(FI),
+ MFI.getObjectAlignment(FI));
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::tSpill))
.addReg(SrcReg, getKillRegState(isKill))
- .addFrameIndex(FI).addImm(0));
- }
-}
-
-void Thumb1InstrInfo::storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
- bool isKill,
- SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const{
- DebugLoc DL = DebugLoc::getUnknownLoc();
- unsigned Opc = 0;
-
- assert(RC == ARM::GPRRegisterClass && "Unknown regclass!");
- if (RC == ARM::GPRRegisterClass) {
- Opc = Addr[0].isFI() ? ARM::tSpill : ARM::tSTR;
+ .addFrameIndex(FI).addImm(0).addMemOperand(MMO));
}
-
- MachineInstrBuilder MIB =
- BuildMI(MF, DL, get(Opc)).addReg(SrcReg, getKillRegState(isKill));
- for (unsigned i = 0, e = Addr.size(); i != e; ++i)
- MIB.addOperand(Addr[i]);
- AddDefaultPred(MIB);
- NewMIs.push_back(MIB);
- return;
}
void Thumb1InstrInfo::
DebugLoc DL = DebugLoc::getUnknownLoc();
if (I != MBB.end()) DL = I->getDebugLoc();
- assert(RC == ARM::tGPRRegisterClass && "Unknown regclass!");
-
- if (RC == ARM::tGPRRegisterClass) {
+ assert((RC == ARM::tGPRRegisterClass ||
+ (TargetRegisterInfo::isPhysicalRegister(DestReg) &&
+ isARMLowRegister(DestReg))) && "Unknown regclass!");
+
+ if (RC == ARM::tGPRRegisterClass ||
+ (TargetRegisterInfo::isPhysicalRegister(DestReg) &&
+ isARMLowRegister(DestReg))) {
+ MachineFunction &MF = *MBB.getParent();
+ MachineFrameInfo &MFI = *MF.getFrameInfo();
+ MachineMemOperand *MMO =
+ MF.getMachineMemOperand(PseudoSourceValue::getFixedStack(FI),
+ MachineMemOperand::MOLoad, 0,
+ MFI.getObjectSize(FI),
+ MFI.getObjectAlignment(FI));
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::tRestore), DestReg)
- .addFrameIndex(FI).addImm(0));
- }
-}
-
-void Thumb1InstrInfo::
-loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
- SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const {
- DebugLoc DL = DebugLoc::getUnknownLoc();
- unsigned Opc = 0;
-
- if (RC == ARM::GPRRegisterClass) {
- Opc = Addr[0].isFI() ? ARM::tRestore : ARM::tLDR;
+ .addFrameIndex(FI).addImm(0).addMemOperand(MMO));
}
-
- MachineInstrBuilder MIB = BuildMI(MF, DL, get(Opc), DestReg);
- for (unsigned i = 0, e = Addr.size(); i != e; ++i)
- MIB.addOperand(Addr[i]);
- AddDefaultPred(MIB);
- NewMIs.push_back(MIB);
- return;
}
bool Thumb1InstrInfo::
if (MI != MBB.end()) DL = MI->getDebugLoc();
MachineInstrBuilder MIB = BuildMI(MBB, MI, DL, get(ARM::tPUSH));
+ AddDefaultPred(MIB);
+ MIB.addReg(0); // No write back.
for (unsigned i = CSI.size(); i != 0; --i) {
unsigned Reg = CSI[i-1].getReg();
// Add the callee-saved register as live-in. It's killed at the spill.
return false;
bool isVarArg = AFI->getVarArgsRegSaveSize() > 0;
- MachineInstr *PopMI = MF.CreateMachineInstr(get(ARM::tPOP),MI->getDebugLoc());
+ DebugLoc DL = MI->getDebugLoc();
+ MachineInstrBuilder MIB = BuildMI(MF, DL, get(ARM::tPOP));
+ AddDefaultPred(MIB);
+ MIB.addReg(0); // No write back.
+
+ bool NumRegs = false;
for (unsigned i = CSI.size(); i != 0; --i) {
unsigned Reg = CSI[i-1].getReg();
if (Reg == ARM::LR) {
if (isVarArg)
continue;
Reg = ARM::PC;
- PopMI->setDesc(get(ARM::tPOP_RET));
+ (*MIB).setDesc(get(ARM::tPOP_RET));
MI = MBB.erase(MI);
}
- PopMI->addOperand(MachineOperand::CreateReg(Reg, true));
+ MIB.addReg(Reg, getDefRegState(true));
+ NumRegs = true;
}
// It's illegal to emit pop instruction without operands.
- if (PopMI->getNumOperands() > 0)
- MBB.insert(MI, PopMI);
+ if (NumRegs)
+ MBB.insert(MI, &*MIB);
return true;
}
switch (Opc) {
default: break;
case ARM::tMOVr:
- case ARM::tMOVlor2hir:
- case ARM::tMOVhir2lor:
- case ARM::tMOVhir2hir: {
+ case ARM::tMOVtgpr2gpr:
+ case ARM::tMOVgpr2tgpr:
+ case ARM::tMOVgpr2gpr: {
if (OpNum == 0) { // move -> store
unsigned SrcReg = MI->getOperand(1).getReg();
bool isKill = MI->getOperand(1).isKill();
- if (RI.isPhysicalRegister(SrcReg) && !isARMLowRegister(SrcReg))
+ if (TargetRegisterInfo::isPhysicalRegister(SrcReg) &&
+ !isARMLowRegister(SrcReg))
// tSpill cannot take a high register operand.
break;
NewMI = AddDefaultPred(BuildMI(MF, MI->getDebugLoc(), get(ARM::tSpill))
.addFrameIndex(FI).addImm(0));
} else { // move -> load
unsigned DstReg = MI->getOperand(0).getReg();
- if (RI.isPhysicalRegister(DstReg) && !isARMLowRegister(DstReg))
+ if (TargetRegisterInfo::isPhysicalRegister(DstReg) &&
+ !isARMLowRegister(DstReg))
// tRestore cannot target a high register operand.
break;
bool isDead = MI->getOperand(0).isDead();