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-rw-r--r--lib/Target/ARM/ARMBaseInstrInfo.cpp629
1 files changed, 276 insertions, 353 deletions
diff --git a/lib/Target/ARM/ARMBaseInstrInfo.cpp b/lib/Target/ARM/ARMBaseInstrInfo.cpp
index 2528854..49c16f3 100644
--- a/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -56,7 +56,7 @@ ARMBaseInstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
MachineInstr *MI = MBBI;
MachineFunction &MF = *MI->getParent()->getParent();
- unsigned TSFlags = MI->getDesc().TSFlags;
+ uint64_t TSFlags = MI->getDesc().TSFlags;
bool isPre = false;
switch ((TSFlags & ARMII::IndexModeMask) >> ARMII::IndexModeShift) {
default: return NULL;
@@ -199,9 +199,9 @@ ARMBaseInstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
bool
ARMBaseInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const {
+ MachineBasicBlock::iterator MI,
+ const std::vector<CalleeSavedInfo> &CSI,
+ const TargetRegisterInfo *TRI) const {
if (CSI.empty())
return false;
@@ -227,8 +227,9 @@ ARMBaseInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
// Insert the spill to the stack frame. The register is killed at the spill
//
+ const TargetRegisterClass *RC = TRI->getMinimalPhysRegClass(Reg);
storeRegToStackSlot(MBB, MI, Reg, isKill,
- CSI[i].getFrameIdx(), CSI[i].getRegClass(), TRI);
+ CSI[i].getFrameIdx(), RC, TRI);
}
return true;
}
@@ -347,10 +348,8 @@ unsigned ARMBaseInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
unsigned
ARMBaseInstrInfo::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 {
ARMFunctionInfo *AFI = MBB.getParent()->getInfo<ARMFunctionInfo>();
int BOpc = !AFI->isThumbFunction()
? ARM::B : (AFI->isThumb2Function() ? ARM::t2B : ARM::tB);
@@ -364,17 +363,17 @@ ARMBaseInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
if (FBB == 0) {
if (Cond.empty()) // Unconditional branch?
- BuildMI(&MBB, dl, get(BOpc)).addMBB(TBB);
+ BuildMI(&MBB, DL, get(BOpc)).addMBB(TBB);
else
- BuildMI(&MBB, dl, get(BccOpc)).addMBB(TBB)
+ BuildMI(&MBB, DL, get(BccOpc)).addMBB(TBB)
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg());
return 1;
}
// Two-way conditional branch.
- BuildMI(&MBB, dl, get(BccOpc)).addMBB(TBB)
+ BuildMI(&MBB, DL, get(BccOpc)).addMBB(TBB)
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg());
- BuildMI(&MBB, dl, get(BOpc)).addMBB(FBB);
+ BuildMI(&MBB, DL, get(BOpc)).addMBB(FBB);
return 2;
}
@@ -487,7 +486,7 @@ unsigned ARMBaseInstrInfo::GetInstSizeInBytes(const MachineInstr *MI) const {
// Basic size info comes from the TSFlags field.
const TargetInstrDesc &TID = MI->getDesc();
- unsigned TSFlags = TID.TSFlags;
+ uint64_t TSFlags = TID.TSFlags;
unsigned Opc = MI->getOpcode();
switch ((TSFlags & ARMII::SizeMask) >> ARMII::SizeShift) {
@@ -524,11 +523,11 @@ unsigned ARMBaseInstrInfo::GetInstSizeInBytes(const MachineInstr *MI) const {
return 10;
case ARM::Int_eh_sjlj_setjmp:
case ARM::Int_eh_sjlj_setjmp_nofp:
- return 24;
+ return 20;
case ARM::tInt_eh_sjlj_setjmp:
case ARM::t2Int_eh_sjlj_setjmp:
case ARM::t2Int_eh_sjlj_setjmp_nofp:
- return 14;
+ return 12;
case ARM::BR_JTr:
case ARM::BR_JTm:
case ARM::BR_JTadd:
@@ -595,6 +594,7 @@ ARMBaseInstrInfo::isMoveInstr(const MachineInstr &MI,
return true;
}
case ARM::MOVr:
+ case ARM::MOVr_TC:
case ARM::tMOVr:
case ARM::tMOVgpr2tgpr:
case ARM::tMOVtgpr2gpr:
@@ -693,75 +693,44 @@ ARMBaseInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
return 0;
}
-bool
-ARMBaseInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *DestRC,
- const TargetRegisterClass *SrcRC,
- DebugLoc DL) const {
- // tGPR is used sometimes in ARM instructions that need to avoid using
- // certain registers. Just treat it as GPR here.
- if (DestRC == ARM::tGPRRegisterClass)
- DestRC = ARM::GPRRegisterClass;
- if (SrcRC == ARM::tGPRRegisterClass)
- SrcRC = ARM::GPRRegisterClass;
-
- // Allow DPR / DPR_VFP2 / DPR_8 cross-class copies.
- if (DestRC == ARM::DPR_8RegisterClass)
- DestRC = ARM::DPR_VFP2RegisterClass;
- if (SrcRC == ARM::DPR_8RegisterClass)
- SrcRC = ARM::DPR_VFP2RegisterClass;
-
- // Allow QPR / QPR_VFP2 / QPR_8 cross-class copies.
- if (DestRC == ARM::QPR_VFP2RegisterClass ||
- DestRC == ARM::QPR_8RegisterClass)
- DestRC = ARM::QPRRegisterClass;
- if (SrcRC == ARM::QPR_VFP2RegisterClass ||
- SrcRC == ARM::QPR_8RegisterClass)
- SrcRC = ARM::QPRRegisterClass;
-
- // Allow QQPR / QQPR_VFP2 cross-class copies.
- if (DestRC == ARM::QQPR_VFP2RegisterClass)
- DestRC = ARM::QQPRRegisterClass;
- if (SrcRC == ARM::QQPR_VFP2RegisterClass)
- SrcRC = ARM::QQPRRegisterClass;
-
- // Disallow copies of unequal sizes.
- if (DestRC != SrcRC && DestRC->getSize() != SrcRC->getSize())
- return false;
-
- if (DestRC == ARM::GPRRegisterClass) {
- if (SrcRC == ARM::SPRRegisterClass)
- AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VMOVRS), DestReg)
- .addReg(SrcReg));
- else
- AddDefaultCC(AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::MOVr),
- DestReg).addReg(SrcReg)));
- } else {
- unsigned Opc;
-
- if (DestRC == ARM::SPRRegisterClass)
- Opc = (SrcRC == ARM::GPRRegisterClass ? ARM::VMOVSR : ARM::VMOVS);
- else if (DestRC == ARM::DPRRegisterClass)
- Opc = ARM::VMOVD;
- else if (DestRC == ARM::DPR_VFP2RegisterClass ||
- SrcRC == ARM::DPR_VFP2RegisterClass)
- // Always use neon reg-reg move if source or dest is NEON-only regclass.
- Opc = ARM::VMOVDneon;
- else if (DestRC == ARM::QPRRegisterClass)
- Opc = ARM::VMOVQ;
- else if (DestRC == ARM::QQPRRegisterClass)
- Opc = ARM::VMOVQQ;
- else if (DestRC == ARM::QQQQPRRegisterClass)
- Opc = ARM::VMOVQQQQ;
- else
- return false;
-
- AddDefaultPred(BuildMI(MBB, I, DL, get(Opc), DestReg).addReg(SrcReg));
+void ARMBaseInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I, DebugLoc DL,
+ unsigned DestReg, unsigned SrcReg,
+ bool KillSrc) const {
+ bool GPRDest = ARM::GPRRegClass.contains(DestReg);
+ bool GPRSrc = ARM::GPRRegClass.contains(SrcReg);
+
+ if (GPRDest && GPRSrc) {
+ AddDefaultCC(AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::MOVr), DestReg)
+ .addReg(SrcReg, getKillRegState(KillSrc))));
+ return;
}
- return true;
+ bool SPRDest = ARM::SPRRegClass.contains(DestReg);
+ bool SPRSrc = ARM::SPRRegClass.contains(SrcReg);
+
+ unsigned Opc;
+ if (SPRDest && SPRSrc)
+ Opc = ARM::VMOVS;
+ else if (GPRDest && SPRSrc)
+ Opc = ARM::VMOVRS;
+ else if (SPRDest && GPRSrc)
+ Opc = ARM::VMOVSR;
+ else if (ARM::DPRRegClass.contains(DestReg, SrcReg))
+ Opc = ARM::VMOVD;
+ else if (ARM::QPRRegClass.contains(DestReg, SrcReg))
+ Opc = ARM::VMOVQ;
+ else if (ARM::QQPRRegClass.contains(DestReg, SrcReg))
+ Opc = ARM::VMOVQQ;
+ else if (ARM::QQQQPRRegClass.contains(DestReg, SrcReg))
+ Opc = ARM::VMOVQQQQ;
+ else
+ llvm_unreachable("Impossible reg-to-reg copy");
+
+ MachineInstrBuilder MIB = BuildMI(MBB, I, DL, get(Opc), DestReg);
+ MIB.addReg(SrcReg, getKillRegState(KillSrc));
+ if (Opc != ARM::VMOVQQ && Opc != ARM::VMOVQQQQ)
+ AddDefaultPred(MIB);
}
static const
@@ -795,30 +764,34 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
// tGPR is used sometimes in ARM instructions that need to avoid using
// certain registers. Just treat it as GPR here.
- if (RC == ARM::tGPRRegisterClass)
+ if (RC == ARM::tGPRRegisterClass || RC == ARM::tcGPRRegisterClass)
RC = ARM::GPRRegisterClass;
- if (RC == ARM::GPRRegisterClass) {
+ switch (RC->getID()) {
+ case ARM::GPRRegClassID:
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::STR))
.addReg(SrcReg, getKillRegState(isKill))
.addFrameIndex(FI).addReg(0).addImm(0).addMemOperand(MMO));
- } else if (RC == ARM::SPRRegisterClass) {
+ break;
+ case ARM::SPRRegClassID:
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTRS))
.addReg(SrcReg, getKillRegState(isKill))
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
- } else if (RC == ARM::DPRRegisterClass ||
- RC == ARM::DPR_VFP2RegisterClass ||
- RC == ARM::DPR_8RegisterClass) {
+ break;
+ case ARM::DPRRegClassID:
+ case ARM::DPR_VFP2RegClassID:
+ case ARM::DPR_8RegClassID:
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTRD))
.addReg(SrcReg, getKillRegState(isKill))
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
- } else if (RC == ARM::QPRRegisterClass ||
- RC == ARM::QPR_VFP2RegisterClass ||
- RC == ARM::QPR_8RegisterClass) {
+ break;
+ case ARM::QPRRegClassID:
+ case ARM::QPR_VFP2RegClassID:
+ case ARM::QPR_8RegClassID:
// FIXME: Neon instructions should support predicates
if (Align >= 16 && getRegisterInfo().canRealignStack(MF)) {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VST1q))
- .addFrameIndex(FI).addImm(128)
+ .addFrameIndex(FI).addImm(16)
.addReg(SrcReg, getKillRegState(isKill))
.addMemOperand(MMO));
} else {
@@ -828,12 +801,14 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
.addImm(ARM_AM::getAM5Opc(ARM_AM::ia, 4))
.addMemOperand(MMO));
}
- } else if (RC == ARM::QQPRRegisterClass || RC == ARM::QQPR_VFP2RegisterClass){
+ break;
+ case ARM::QQPRRegClassID:
+ case ARM::QQPR_VFP2RegClassID:
if (Align >= 16 && getRegisterInfo().canRealignStack(MF)) {
// FIXME: It's possible to only store part of the QQ register if the
// spilled def has a sub-register index.
- MachineInstrBuilder MIB = BuildMI(MBB, I, DL, get(ARM::VST2q32))
- .addFrameIndex(FI).addImm(128);
+ MachineInstrBuilder MIB = BuildMI(MBB, I, DL, get(ARM::VST1d64Q))
+ .addFrameIndex(FI).addImm(16);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_0, getKillRegState(isKill), TRI);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_1, 0, TRI);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_2, 0, TRI);
@@ -850,8 +825,8 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
MIB = AddDReg(MIB, SrcReg, ARM::dsub_2, 0, TRI);
AddDReg(MIB, SrcReg, ARM::dsub_3, 0, TRI);
}
- } else {
- assert(RC == ARM::QQQQPRRegisterClass && "Unknown regclass!");
+ break;
+ case ARM::QQQQPRRegClassID: {
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VSTMD))
.addFrameIndex(FI)
@@ -865,6 +840,10 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
MIB = AddDReg(MIB, SrcReg, ARM::dsub_5, 0, TRI);
MIB = AddDReg(MIB, SrcReg, ARM::dsub_6, 0, TRI);
AddDReg(MIB, SrcReg, ARM::dsub_7, 0, TRI);
+ break;
+ }
+ default:
+ llvm_unreachable("Unknown regclass!");
}
}
@@ -886,26 +865,30 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
// tGPR is used sometimes in ARM instructions that need to avoid using
// certain registers. Just treat it as GPR here.
- if (RC == ARM::tGPRRegisterClass)
+ if (RC == ARM::tGPRRegisterClass || RC == ARM::tcGPRRegisterClass)
RC = ARM::GPRRegisterClass;
- if (RC == ARM::GPRRegisterClass) {
+ switch (RC->getID()) {
+ case ARM::GPRRegClassID:
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::LDR), DestReg)
.addFrameIndex(FI).addReg(0).addImm(0).addMemOperand(MMO));
- } else if (RC == ARM::SPRRegisterClass) {
+ break;
+ case ARM::SPRRegClassID:
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDRS), DestReg)
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
- } else if (RC == ARM::DPRRegisterClass ||
- RC == ARM::DPR_VFP2RegisterClass ||
- RC == ARM::DPR_8RegisterClass) {
+ break;
+ case ARM::DPRRegClassID:
+ case ARM::DPR_VFP2RegClassID:
+ case ARM::DPR_8RegClassID:
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDRD), DestReg)
.addFrameIndex(FI).addImm(0).addMemOperand(MMO));
- } else if (RC == ARM::QPRRegisterClass ||
- RC == ARM::QPR_VFP2RegisterClass ||
- RC == ARM::QPR_8RegisterClass) {
+ break;
+ case ARM::QPRRegClassID:
+ case ARM::QPR_VFP2RegClassID:
+ case ARM::QPR_8RegClassID:
if (Align >= 16 && getRegisterInfo().canRealignStack(MF)) {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLD1q), DestReg)
- .addFrameIndex(FI).addImm(128)
+ .addFrameIndex(FI).addImm(16)
.addMemOperand(MMO));
} else {
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMQ), DestReg)
@@ -913,14 +896,16 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
.addImm(ARM_AM::getAM5Opc(ARM_AM::ia, 4))
.addMemOperand(MMO));
}
- } else if (RC == ARM::QQPRRegisterClass || RC == ARM::QQPR_VFP2RegisterClass){
+ break;
+ case ARM::QQPRRegClassID:
+ case ARM::QQPR_VFP2RegClassID:
if (Align >= 16 && getRegisterInfo().canRealignStack(MF)) {
- MachineInstrBuilder MIB = BuildMI(MBB, I, DL, get(ARM::VLD2q32));
+ MachineInstrBuilder MIB = BuildMI(MBB, I, DL, get(ARM::VLD1d64Q));
MIB = AddDReg(MIB, DestReg, ARM::dsub_0, RegState::Define, TRI);
MIB = AddDReg(MIB, DestReg, ARM::dsub_1, RegState::Define, TRI);
MIB = AddDReg(MIB, DestReg, ARM::dsub_2, RegState::Define, TRI);
MIB = AddDReg(MIB, DestReg, ARM::dsub_3, RegState::Define, TRI);
- AddDefaultPred(MIB.addFrameIndex(FI).addImm(128).addMemOperand(MMO));
+ AddDefaultPred(MIB.addFrameIndex(FI).addImm(16).addMemOperand(MMO));
} else {
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMD))
@@ -932,21 +917,25 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
MIB = AddDReg(MIB, DestReg, ARM::dsub_2, RegState::Define, TRI);
AddDReg(MIB, DestReg, ARM::dsub_3, RegState::Define, TRI);
}
- } else {
- assert(RC == ARM::QQQQPRRegisterClass && "Unknown regclass!");
- MachineInstrBuilder MIB =
- AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMD))
- .addFrameIndex(FI)
- .addImm(ARM_AM::getAM5Opc(ARM_AM::ia, 4)))
- .addMemOperand(MMO);
- MIB = AddDReg(MIB, DestReg, ARM::dsub_0, RegState::Define, TRI);
- MIB = AddDReg(MIB, DestReg, ARM::dsub_1, RegState::Define, TRI);
- MIB = AddDReg(MIB, DestReg, ARM::dsub_2, RegState::Define, TRI);
- MIB = AddDReg(MIB, DestReg, ARM::dsub_3, RegState::Define, TRI);
- MIB = AddDReg(MIB, DestReg, ARM::dsub_4, RegState::Define, TRI);
- MIB = AddDReg(MIB, DestReg, ARM::dsub_5, RegState::Define, TRI);
- MIB = AddDReg(MIB, DestReg, ARM::dsub_6, RegState::Define, TRI);
- AddDReg(MIB, DestReg, ARM::dsub_7, RegState::Define, TRI);
+ break;
+ case ARM::QQQQPRRegClassID: {
+ MachineInstrBuilder MIB =
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::VLDMD))
+ .addFrameIndex(FI)
+ .addImm(ARM_AM::getAM5Opc(ARM_AM::ia, 4)))
+ .addMemOperand(MMO);
+ MIB = AddDReg(MIB, DestReg, ARM::dsub_0, RegState::Define, TRI);
+ MIB = AddDReg(MIB, DestReg, ARM::dsub_1, RegState::Define, TRI);
+ MIB = AddDReg(MIB, DestReg, ARM::dsub_2, RegState::Define, TRI);
+ MIB = AddDReg(MIB, DestReg, ARM::dsub_3, RegState::Define, TRI);
+ MIB = AddDReg(MIB, DestReg, ARM::dsub_4, RegState::Define, TRI);
+ MIB = AddDReg(MIB, DestReg, ARM::dsub_5, RegState::Define, TRI);
+ MIB = AddDReg(MIB, DestReg, ARM::dsub_6, RegState::Define, TRI);
+ AddDReg(MIB, DestReg, ARM::dsub_7, RegState::Define, TRI);
+ break;
+ }
+ default:
+ llvm_unreachable("Unknown regclass!");
}
}
@@ -960,223 +949,6 @@ ARMBaseInstrInfo::emitFrameIndexDebugValue(MachineFunction &MF,
return &*MIB;
}
-MachineInstr *ARMBaseInstrInfo::
-foldMemoryOperandImpl(MachineFunction &MF, MachineInstr *MI,
- const SmallVectorImpl<unsigned> &Ops, int FI) const {
- if (Ops.size() != 1) return NULL;
-
- unsigned OpNum = Ops[0];
- unsigned Opc = MI->getOpcode();
- MachineInstr *NewMI = NULL;
- if (Opc == ARM::MOVr || Opc == ARM::t2MOVr) {
- // If it is updating CPSR, then it cannot be folded.
- if (MI->getOperand(4).getReg() == ARM::CPSR && !MI->getOperand(4).isDead())
- return NULL;
- unsigned Pred = MI->getOperand(2).getImm();
- unsigned PredReg = MI->getOperand(3).getReg();
- if (OpNum == 0) { // move -> store
- unsigned SrcReg = MI->getOperand(1).getReg();
- unsigned SrcSubReg = MI->getOperand(1).getSubReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- if (Opc == ARM::MOVr)
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::STR))
- .addReg(SrcReg,
- getKillRegState(isKill) | getUndefRegState(isUndef),
- SrcSubReg)
- .addFrameIndex(FI).addReg(0).addImm(0).addImm(Pred).addReg(PredReg);
- else // ARM::t2MOVr
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::t2STRi12))
- .addReg(SrcReg,
- getKillRegState(isKill) | getUndefRegState(isUndef),
- SrcSubReg)
- .addFrameIndex(FI).addImm(0).addImm(Pred).addReg(PredReg);
- } else { // move -> load
- unsigned DstReg = MI->getOperand(0).getReg();
- unsigned DstSubReg = MI->getOperand(0).getSubReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- if (Opc == ARM::MOVr)
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::LDR))
- .addReg(DstReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef), DstSubReg)
- .addFrameIndex(FI).addReg(0).addImm(0).addImm(Pred).addReg(PredReg);
- else // ARM::t2MOVr
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::t2LDRi12))
- .addReg(DstReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef), DstSubReg)
- .addFrameIndex(FI).addImm(0).addImm(Pred).addReg(PredReg);
- }
- } else if (Opc == ARM::tMOVgpr2gpr ||
- Opc == ARM::tMOVtgpr2gpr ||
- Opc == ARM::tMOVgpr2tgpr) {
- if (OpNum == 0) { // move -> store
- unsigned SrcReg = MI->getOperand(1).getReg();
- unsigned SrcSubReg = MI->getOperand(1).getSubReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::t2STRi12))
- .addReg(SrcReg,
- getKillRegState(isKill) | getUndefRegState(isUndef),
- SrcSubReg)
- .addFrameIndex(FI).addImm(0).addImm(ARMCC::AL).addReg(0);
- } else { // move -> load
- unsigned DstReg = MI->getOperand(0).getReg();
- unsigned DstSubReg = MI->getOperand(0).getSubReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::t2LDRi12))
- .addReg(DstReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef),
- DstSubReg)
- .addFrameIndex(FI).addImm(0).addImm(ARMCC::AL).addReg(0);
- }
- } else if (Opc == ARM::VMOVS) {
- unsigned Pred = MI->getOperand(2).getImm();
- unsigned PredReg = MI->getOperand(3).getReg();
- if (OpNum == 0) { // move -> store
- unsigned SrcReg = MI->getOperand(1).getReg();
- unsigned SrcSubReg = MI->getOperand(1).getSubReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VSTRS))
- .addReg(SrcReg, getKillRegState(isKill) | getUndefRegState(isUndef),
- SrcSubReg)
- .addFrameIndex(FI)
- .addImm(0).addImm(Pred).addReg(PredReg);
- } else { // move -> load
- unsigned DstReg = MI->getOperand(0).getReg();
- unsigned DstSubReg = MI->getOperand(0).getSubReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VLDRS))
- .addReg(DstReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef),
- DstSubReg)
- .addFrameIndex(FI).addImm(0).addImm(Pred).addReg(PredReg);
- }
- } else if (Opc == ARM::VMOVD || Opc == ARM::VMOVDneon) {
- unsigned Pred = MI->getOperand(2).getImm();
- unsigned PredReg = MI->getOperand(3).getReg();
- if (OpNum == 0) { // move -> store
- unsigned SrcReg = MI->getOperand(1).getReg();
- unsigned SrcSubReg = MI->getOperand(1).getSubReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VSTRD))
- .addReg(SrcReg,
- getKillRegState(isKill) | getUndefRegState(isUndef),
- SrcSubReg)
- .addFrameIndex(FI).addImm(0).addImm(Pred).addReg(PredReg);
- } else { // move -> load
- unsigned DstReg = MI->getOperand(0).getReg();
- unsigned DstSubReg = MI->getOperand(0).getSubReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VLDRD))
- .addReg(DstReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef),
- DstSubReg)
- .addFrameIndex(FI).addImm(0).addImm(Pred).addReg(PredReg);
- }
- } else if (Opc == ARM::VMOVQ) {
- MachineFrameInfo &MFI = *MF.getFrameInfo();
- unsigned Pred = MI->getOperand(2).getImm();
- unsigned PredReg = MI->getOperand(3).getReg();
- if (OpNum == 0) { // move -> store
- unsigned SrcReg = MI->getOperand(1).getReg();
- unsigned SrcSubReg = MI->getOperand(1).getSubReg();
- bool isKill = MI->getOperand(1).isKill();
- bool isUndef = MI->getOperand(1).isUndef();
- if (MFI.getObjectAlignment(FI) >= 16 &&
- getRegisterInfo().canRealignStack(MF)) {
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VST1q))
- .addFrameIndex(FI).addImm(128)
- .addReg(SrcReg,
- getKillRegState(isKill) | getUndefRegState(isUndef),
- SrcSubReg)
- .addImm(Pred).addReg(PredReg);
- } else {
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VSTMQ))
- .addReg(SrcReg,
- getKillRegState(isKill) | getUndefRegState(isUndef),
- SrcSubReg)
- .addFrameIndex(FI).addImm(ARM_AM::getAM5Opc(ARM_AM::ia, 4))
- .addImm(Pred).addReg(PredReg);
- }
- } else { // move -> load
- unsigned DstReg = MI->getOperand(0).getReg();
- unsigned DstSubReg = MI->getOperand(0).getSubReg();
- bool isDead = MI->getOperand(0).isDead();
- bool isUndef = MI->getOperand(0).isUndef();
- if (MFI.getObjectAlignment(FI) >= 16 &&
- getRegisterInfo().canRealignStack(MF)) {
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VLD1q))
- .addReg(DstReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef),
- DstSubReg)
- .addFrameIndex(FI).addImm(128).addImm(Pred).addReg(PredReg);
- } else {
- NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::VLDMQ))
- .addReg(DstReg,
- RegState::Define |
- getDeadRegState(isDead) |
- getUndefRegState(isUndef),
- DstSubReg)
- .addFrameIndex(FI).addImm(ARM_AM::getAM5Opc(ARM_AM::ia, 4))
- .addImm(Pred).addReg(PredReg);
- }
- }
- }
-
- return NewMI;
-}
-
-MachineInstr*
-ARMBaseInstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
- MachineInstr* MI,
- const SmallVectorImpl<unsigned> &Ops,
- MachineInstr* LoadMI) const {
- // FIXME
- return 0;
-}
-
-bool
-ARMBaseInstrInfo::canFoldMemoryOperand(const MachineInstr *MI,
- const SmallVectorImpl<unsigned> &Ops) const {
- if (Ops.size() != 1) return false;
-
- unsigned Opc = MI->getOpcode();
- if (Opc == ARM::MOVr || Opc == ARM::t2MOVr) {
- // If it is updating CPSR, then it cannot be folded.
- return MI->getOperand(4).getReg() != ARM::CPSR ||
- MI->getOperand(4).isDead();
- } else if (Opc == ARM::tMOVgpr2gpr ||
- Opc == ARM::tMOVtgpr2gpr ||
- Opc == ARM::tMOVgpr2tgpr) {
- return true;
- } else if (Opc == ARM::VMOVS || Opc == ARM::VMOVD ||
- Opc == ARM::VMOVDneon || Opc == ARM::VMOVQ) {
- return true;
- }
-
- // FIXME: VMOVQQ and VMOVQQQQ?
-
- return false;
-}
-
/// Create a copy of a const pool value. Update CPI to the new index and return
/// the label UID.
static unsigned duplicateCPV(MachineFunction &MF, unsigned &CPI) {
@@ -1211,17 +983,12 @@ reMaterialize(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I,
unsigned DestReg, unsigned SubIdx,
const MachineInstr *Orig,
- const TargetRegisterInfo *TRI) const {
- if (SubIdx && TargetRegisterInfo::isPhysicalRegister(DestReg)) {
- DestReg = TRI->getSubReg(DestReg, SubIdx);
- SubIdx = 0;
- }
-
+ const TargetRegisterInfo &TRI) const {
unsigned Opcode = Orig->getOpcode();
switch (Opcode) {
default: {
MachineInstr *MI = MBB.getParent()->CloneMachineInstr(Orig);
- MI->getOperand(0).setReg(DestReg);
+ MI->substituteRegister(Orig->getOperand(0).getReg(), DestReg, SubIdx, TRI);
MBB.insert(I, MI);
break;
}
@@ -1237,9 +1004,6 @@ reMaterialize(MachineBasicBlock &MBB,
break;
}
}
-
- MachineInstr *NewMI = prior(I);
- NewMI->getOperand(0).setSubReg(SubIdx);
}
MachineInstr *
@@ -1291,6 +1055,165 @@ bool ARMBaseInstrInfo::produceSameValue(const MachineInstr *MI0,
return MI0->isIdenticalTo(MI1, MachineInstr::IgnoreVRegDefs);
}
+/// areLoadsFromSameBasePtr - This is used by the pre-regalloc scheduler to
+/// determine if two loads are loading from the same base address. It should
+/// only return true if the base pointers are the same and the only differences
+/// between the two addresses is the offset. It also returns the offsets by
+/// reference.
+bool ARMBaseInstrInfo::areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2,
+ int64_t &Offset1,
+ int64_t &Offset2) const {
+ // Don't worry about Thumb: just ARM and Thumb2.
+ if (Subtarget.isThumb1Only()) return false;
+
+ if (!Load1->isMachineOpcode() || !Load2->isMachineOpcode())
+ return false;
+
+ switch (Load1->getMachineOpcode()) {
+ default:
+ return false;
+ case ARM::LDR:
+ case ARM::LDRB:
+ case ARM::LDRD:
+ case ARM::LDRH:
+ case ARM::LDRSB:
+ case ARM::LDRSH:
+ case ARM::VLDRD:
+ case ARM::VLDRS:
+ case ARM::t2LDRi8:
+ case ARM::t2LDRDi8:
+ case ARM::t2LDRSHi8:
+ case ARM::t2LDRi12:
+ case ARM::t2LDRSHi12:
+ break;
+ }
+
+ switch (Load2->getMachineOpcode()) {
+ default:
+ return false;
+ case ARM::LDR:
+ case ARM::LDRB:
+ case ARM::LDRD:
+ case ARM::LDRH:
+ case ARM::LDRSB:
+ case ARM::LDRSH:
+ case ARM::VLDRD:
+ case ARM::VLDRS:
+ case ARM::t2LDRi8:
+ case ARM::t2LDRDi8:
+ case ARM::t2LDRSHi8:
+ case ARM::t2LDRi12:
+ case ARM::t2LDRSHi12:
+ break;
+ }
+
+ // Check if base addresses and chain operands match.
+ if (Load1->getOperand(0) != Load2->getOperand(0) ||
+ Load1->getOperand(4) != Load2->getOperand(4))
+ return false;
+
+ // Index should be Reg0.
+ if (Load1->getOperand(3) != Load2->getOperand(3))
+ return false;
+
+ // Determine the offsets.
+ if (isa<ConstantSDNode>(Load1->getOperand(1)) &&
+ isa<ConstantSDNode>(Load2->getOperand(1))) {
+ Offset1 = cast<ConstantSDNode>(Load1->getOperand(1))->getSExtValue();
+ Offset2 = cast<ConstantSDNode>(Load2->getOperand(1))->getSExtValue();
+ return true;
+ }
+
+ return false;
+}
+
+/// shouldScheduleLoadsNear - This is a used by the pre-regalloc scheduler to
+/// determine (in conjuction with areLoadsFromSameBasePtr) if two loads should
+/// be scheduled togther. On some targets if two loads are loading from
+/// addresses in the same cache line, it's better if they are scheduled
+/// together. This function takes two integers that represent the load offsets
+/// from the common base address. It returns true if it decides it's desirable
+/// to schedule the two loads together. "NumLoads" is the number of loads that
+/// have already been scheduled after Load1.
+bool ARMBaseInstrInfo::shouldScheduleLoadsNear(SDNode *Load1, SDNode *Load2,
+ int64_t Offset1, int64_t Offset2,
+ unsigned NumLoads) const {
+ // Don't worry about Thumb: just ARM and Thumb2.
+ if (Subtarget.isThumb1Only()) return false;
+
+ assert(Offset2 > Offset1);
+
+ if ((Offset2 - Offset1) / 8 > 64)
+ return false;
+
+ if (Load1->getMachineOpcode() != Load2->getMachineOpcode())
+ return false; // FIXME: overly conservative?
+
+ // Four loads in a row should be sufficient.
+ if (NumLoads >= 3)
+ return false;
+
+ return true;
+}
+
+bool ARMBaseInstrInfo::isSchedulingBoundary(const MachineInstr *MI,
+ const MachineBasicBlock *MBB,
+ const MachineFunction &MF) const {
+ // Debug info is never a scheduling boundary. It's necessary to be explicit
+ // due to the special treatment of IT instructions below, otherwise a
+ // dbg_value followed by an IT will result in the IT instruction being
+ // considered a scheduling hazard, which is wrong. It should be the actual
+ // instruction preceding the dbg_value instruction(s), just like it is
+ // when debug info is not present.
+ if (MI->isDebugValue())
+ return false;
+
+ // Terminators and labels can't be scheduled around.
+ if (MI->getDesc().isTerminator() || MI->isLabel())
+ return true;
+
+ // Treat the start of the IT block as a scheduling boundary, but schedule
+ // t2IT along with all instructions following it.
+ // FIXME: This is a big hammer. But the alternative is to add all potential
+ // true and anti dependencies to IT block instructions as implicit operands
+ // to the t2IT instruction. The added compile time and complexity does not
+ // seem worth it.
+ MachineBasicBlock::const_iterator I = MI;
+ // Make sure to skip any dbg_value instructions
+ while (++I != MBB->end() && I->isDebugValue())
+ ;
+ if (I != MBB->end() && I->getOpcode() == ARM::t2IT)
+ return true;
+
+ // Don't attempt to schedule around any instruction that defines
+ // a stack-oriented pointer, as it's unlikely to be profitable. This
+ // saves compile time, because it doesn't require every single
+ // stack slot reference to depend on the instruction that does the
+ // modification.
+ if (MI->definesRegister(ARM::SP))
+ return true;
+
+ return false;
+}
+
+bool ARMBaseInstrInfo::
+isProfitableToIfCvt(MachineBasicBlock &MBB, unsigned NumInstrs) const {
+ if (!NumInstrs)
+ return false;
+ if (Subtarget.getCPUString() == "generic")
+ // Generic (and overly aggressive) if-conversion limits for testing.
+ return NumInstrs <= 10;
+ else if (Subtarget.hasV7Ops())
+ return NumInstrs <= 3;
+ return NumInstrs <= 2;
+}
+
+bool ARMBaseInstrInfo::
+isProfitableToIfCvt(MachineBasicBlock &TMBB, unsigned NumT,
+ MachineBasicBlock &FMBB, unsigned NumF) const {
+ return NumT && NumF && NumT <= 2 && NumF <= 2;
+}
+
/// getInstrPredicate - If instruction is predicated, returns its predicate
/// condition, otherwise returns AL. It also returns the condition code
/// register by reference.
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