//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the "Instituto Nokia de Tecnologia" and
-// is distributed under the University of Illinois Open Source
+// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "ARMMachineFunctionInfo.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/LiveVariables.h"
+#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/Target/TargetAsmInfo.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
-static cl::opt<bool> EnableARM3Addr("enable-arm-3-addr-conv", cl::Hidden,
- cl::desc("Enable ARM 2-addr to 3-addr conv"));
+static cl::opt<bool>
+EnableARM3Addr("enable-arm-3-addr-conv", cl::Hidden,
+ cl::desc("Enable ARM 2-addr to 3-addr conv"));
-ARMInstrInfo::ARMInstrInfo(const ARMSubtarget &STI)
- : TargetInstrInfo(ARMInsts, array_lengthof(ARMInsts)),
- RI(*this, STI) {
+static inline
+const MachineInstrBuilder &AddDefaultPred(const MachineInstrBuilder &MIB) {
+ return MIB.addImm((int64_t)ARMCC::AL).addReg(0);
+}
+
+static inline
+const MachineInstrBuilder &AddDefaultCC(const MachineInstrBuilder &MIB) {
+ return MIB.addReg(0);
}
-const TargetRegisterClass *ARMInstrInfo::getPointerRegClass() const {
- return &ARM::GPRRegClass;
+ARMBaseInstrInfo::ARMBaseInstrInfo(const ARMSubtarget &STI)
+ : TargetInstrInfoImpl(ARMInsts, array_lengthof(ARMInsts)) {
+}
+
+ARMInstrInfo::ARMInstrInfo(const ARMSubtarget &STI)
+ : ARMBaseInstrInfo(STI), RI(*this, STI) {
}
/// Return true if the instruction is a register to register move and
/// leave the source and dest operands in the passed parameters.
///
bool ARMInstrInfo::isMoveInstr(const MachineInstr &MI,
- unsigned &SrcReg, unsigned &DstReg) const {
- MachineOpCode oc = MI.getOpcode();
+ 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::FCPYS:
case ARM::FCPYD:
+ case ARM::VMOVD:
+ case ARM::VMOVQ:
SrcReg = MI.getOperand(1).getReg();
DstReg = MI.getOperand(0).getReg();
return true;
case ARM::MOVr:
- case ARM::tMOVr:
- assert(MI.getInstrDescriptor()->numOperands >= 2 &&
- MI.getOperand(0).isRegister() &&
- MI.getOperand(1).isRegister() &&
+ assert(MI.getDesc().getNumOperands() >= 2 &&
+ MI.getOperand(0).isReg() &&
+ MI.getOperand(1).isReg() &&
"Invalid ARM MOV instruction");
SrcReg = MI.getOperand(1).getReg();
DstReg = MI.getOperand(0).getReg();
}
}
-unsigned ARMInstrInfo::isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const{
+unsigned ARMInstrInfo::isLoadFromStackSlot(const MachineInstr *MI,
+ int &FrameIndex) const {
switch (MI->getOpcode()) {
default: break;
case ARM::LDR:
- if (MI->getOperand(1).isFrameIndex() &&
+ if (MI->getOperand(1).isFI() &&
MI->getOperand(2).isReg() &&
- MI->getOperand(3).isImmediate() &&
+ MI->getOperand(3).isImm() &&
MI->getOperand(2).getReg() == 0 &&
- MI->getOperand(3).getImmedValue() == 0) {
- FrameIndex = MI->getOperand(1).getFrameIndex();
+ MI->getOperand(3).getImm() == 0) {
+ FrameIndex = MI->getOperand(1).getIndex();
return MI->getOperand(0).getReg();
}
break;
case ARM::FLDD:
case ARM::FLDS:
- if (MI->getOperand(1).isFrameIndex() &&
- MI->getOperand(2).isImmediate() &&
- MI->getOperand(2).getImmedValue() == 0) {
- FrameIndex = MI->getOperand(1).getFrameIndex();
- return MI->getOperand(0).getReg();
- }
- break;
- case ARM::tRestore:
- if (MI->getOperand(1).isFrameIndex() &&
- MI->getOperand(2).isImmediate() &&
- MI->getOperand(2).getImmedValue() == 0) {
- FrameIndex = MI->getOperand(1).getFrameIndex();
+ 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 ARMInstrInfo::isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const {
+unsigned ARMInstrInfo::isStoreToStackSlot(const MachineInstr *MI,
+ int &FrameIndex) const {
switch (MI->getOpcode()) {
default: break;
case ARM::STR:
- if (MI->getOperand(1).isFrameIndex() &&
+ if (MI->getOperand(1).isFI() &&
MI->getOperand(2).isReg() &&
- MI->getOperand(3).isImmediate() &&
+ MI->getOperand(3).isImm() &&
MI->getOperand(2).getReg() == 0 &&
- MI->getOperand(3).getImmedValue() == 0) {
- FrameIndex = MI->getOperand(1).getFrameIndex();
+ MI->getOperand(3).getImm() == 0) {
+ FrameIndex = MI->getOperand(1).getIndex();
return MI->getOperand(0).getReg();
}
break;
case ARM::FSTD:
case ARM::FSTS:
- if (MI->getOperand(1).isFrameIndex() &&
- MI->getOperand(2).isImmediate() &&
- MI->getOperand(2).getImmedValue() == 0) {
- FrameIndex = MI->getOperand(1).getFrameIndex();
- return MI->getOperand(0).getReg();
- }
- break;
- case ARM::tSpill:
- if (MI->getOperand(1).isFrameIndex() &&
- MI->getOperand(2).isImmediate() &&
- MI->getOperand(2).getImmedValue() == 0) {
- FrameIndex = MI->getOperand(1).getFrameIndex();
+ 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;
}
+void ARMInstrInfo::reMaterialize(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ unsigned DestReg,
+ const MachineInstr *Orig) const {
+ DebugLoc dl = Orig->getDebugLoc();
+ if (Orig->getOpcode() == ARM::MOVi2pieces) {
+ RI.emitLoadConstPool(MBB, I, this, dl,
+ DestReg,
+ Orig->getOperand(1).getImm(),
+ (ARMCC::CondCodes)Orig->getOperand(2).getImm(),
+ Orig->getOperand(3).getReg());
+ return;
+ }
+
+ MachineInstr *MI = MBB.getParent()->CloneMachineInstr(Orig);
+ MI->getOperand(0).setReg(DestReg);
+ MBB.insert(I, MI);
+}
+
static unsigned getUnindexedOpcode(unsigned Opc) {
switch (Opc) {
default: break;
}
MachineInstr *
-ARMInstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
- MachineBasicBlock::iterator &MBBI,
- LiveVariables &LV) const {
+ARMBaseInstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
+ MachineBasicBlock::iterator &MBBI,
+ LiveVariables *LV) const {
if (!EnableARM3Addr)
return NULL;
MachineInstr *MI = MBBI;
- unsigned TSFlags = MI->getInstrDescriptor()->TSFlags;
+ MachineFunction &MF = *MI->getParent()->getParent();
+ unsigned TSFlags = MI->getDesc().TSFlags;
bool isPre = false;
switch ((TSFlags & ARMII::IndexModeMask) >> ARMII::IndexModeShift) {
default: return NULL;
break;
}
- // Try spliting an indexed load / store to a un-indexed one plus an add/sub
+ // Try splitting an indexed load/store to an un-indexed one plus an add/sub
// operation.
unsigned MemOpc = getUnindexedOpcode(MI->getOpcode());
if (MemOpc == 0)
MachineInstr *UpdateMI = NULL;
MachineInstr *MemMI = NULL;
unsigned AddrMode = (TSFlags & ARMII::AddrModeMask);
- const TargetInstrDescriptor *TID = MI->getInstrDescriptor();
- unsigned NumOps = TID->numOperands;
- bool isLoad = (TID->Flags & M_LOAD_FLAG) != 0;
+ const TargetInstrDesc &TID = MI->getDesc();
+ unsigned NumOps = TID.getNumOperands();
+ bool isLoad = !TID.mayStore();
const MachineOperand &WB = isLoad ? MI->getOperand(1) : MI->getOperand(0);
const MachineOperand &Base = MI->getOperand(2);
const MachineOperand &Offset = MI->getOperand(NumOps-3);
// Can't encode it in a so_imm operand. This transformation will
// add more than 1 instruction. Abandon!
return NULL;
- UpdateMI = BuildMI(get(isSub ? ARM::SUBri : ARM::ADDri), WBReg)
+ UpdateMI = BuildMI(MF, MI->getDebugLoc(),
+ get(isSub ? ARM::SUBri : ARM::ADDri), WBReg)
.addReg(BaseReg).addImm(SOImmVal)
.addImm(Pred).addReg(0).addReg(0);
} else if (Amt != 0) {
ARM_AM::ShiftOpc ShOpc = ARM_AM::getAM2ShiftOpc(OffImm);
unsigned SOOpc = ARM_AM::getSORegOpc(ShOpc, Amt);
- UpdateMI = BuildMI(get(isSub ? ARM::SUBrs : ARM::ADDrs), WBReg)
+ UpdateMI = BuildMI(MF, MI->getDebugLoc(),
+ get(isSub ? ARM::SUBrs : ARM::ADDrs), WBReg)
.addReg(BaseReg).addReg(OffReg).addReg(0).addImm(SOOpc)
.addImm(Pred).addReg(0).addReg(0);
- } else
- UpdateMI = BuildMI(get(isSub ? ARM::SUBrr : ARM::ADDrr), WBReg)
+ } else
+ UpdateMI = BuildMI(MF, MI->getDebugLoc(),
+ get(isSub ? ARM::SUBrr : ARM::ADDrr), WBReg)
.addReg(BaseReg).addReg(OffReg)
.addImm(Pred).addReg(0).addReg(0);
break;
unsigned Amt = ARM_AM::getAM3Offset(OffImm);
if (OffReg == 0)
// Immediate is 8-bits. It's guaranteed to fit in a so_imm operand.
- UpdateMI = BuildMI(get(isSub ? ARM::SUBri : ARM::ADDri), WBReg)
+ UpdateMI = BuildMI(MF, MI->getDebugLoc(),
+ get(isSub ? ARM::SUBri : ARM::ADDri), WBReg)
.addReg(BaseReg).addImm(Amt)
.addImm(Pred).addReg(0).addReg(0);
else
- UpdateMI = BuildMI(get(isSub ? ARM::SUBrr : ARM::ADDrr), WBReg)
+ UpdateMI = BuildMI(MF, MI->getDebugLoc(),
+ get(isSub ? ARM::SUBrr : ARM::ADDrr), WBReg)
.addReg(BaseReg).addReg(OffReg)
.addImm(Pred).addReg(0).addReg(0);
break;
std::vector<MachineInstr*> NewMIs;
if (isPre) {
if (isLoad)
- MemMI = BuildMI(get(MemOpc), MI->getOperand(0).getReg())
+ MemMI = BuildMI(MF, MI->getDebugLoc(),
+ get(MemOpc), MI->getOperand(0).getReg())
.addReg(WBReg).addReg(0).addImm(0).addImm(Pred);
else
- MemMI = BuildMI(get(MemOpc)).addReg(MI->getOperand(1).getReg())
+ MemMI = BuildMI(MF, MI->getDebugLoc(),
+ get(MemOpc)).addReg(MI->getOperand(1).getReg())
.addReg(WBReg).addReg(0).addImm(0).addImm(Pred);
NewMIs.push_back(MemMI);
NewMIs.push_back(UpdateMI);
} else {
if (isLoad)
- MemMI = BuildMI(get(MemOpc), MI->getOperand(0).getReg())
+ MemMI = BuildMI(MF, MI->getDebugLoc(),
+ get(MemOpc), MI->getOperand(0).getReg())
.addReg(BaseReg).addReg(0).addImm(0).addImm(Pred);
else
- MemMI = BuildMI(get(MemOpc)).addReg(MI->getOperand(1).getReg())
+ MemMI = BuildMI(MF, MI->getDebugLoc(),
+ get(MemOpc)).addReg(MI->getOperand(1).getReg())
.addReg(BaseReg).addReg(0).addImm(0).addImm(Pred);
if (WB.isDead())
UpdateMI->getOperand(0).setIsDead();
NewMIs.push_back(UpdateMI);
NewMIs.push_back(MemMI);
}
-
+
// Transfer LiveVariables states, kill / dead info.
- for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
- MachineOperand &MO = MI->getOperand(i);
- if (MO.isRegister() && MO.getReg() &&
- MRegisterInfo::isVirtualRegister(MO.getReg())) {
- unsigned Reg = MO.getReg();
- LiveVariables::VarInfo &VI = LV.getVarInfo(Reg);
- if (MO.isDef()) {
- MachineInstr *NewMI = (Reg == WBReg) ? UpdateMI : MemMI;
- if (MO.isDead())
- LV.addVirtualRegisterDead(Reg, NewMI);
- // Update the defining instruction.
- if (VI.DefInst == MI)
- VI.DefInst = NewMI;
- }
- if (MO.isUse() && MO.isKill()) {
- for (unsigned j = 0; j < 2; ++j) {
- // Look at the two new MI's in reverse order.
- MachineInstr *NewMI = NewMIs[j];
- int NIdx = NewMI->findRegisterUseOperandIdx(Reg);
- if (NIdx == -1)
- continue;
- LV.addVirtualRegisterKilled(Reg, NewMI);
- if (VI.removeKill(MI))
- VI.Kills.push_back(NewMI);
- break;
+ if (LV) {
+ for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+ MachineOperand &MO = MI->getOperand(i);
+ if (MO.isReg() && MO.getReg() &&
+ TargetRegisterInfo::isVirtualRegister(MO.getReg())) {
+ unsigned Reg = MO.getReg();
+
+ LiveVariables::VarInfo &VI = LV->getVarInfo(Reg);
+ if (MO.isDef()) {
+ MachineInstr *NewMI = (Reg == WBReg) ? UpdateMI : MemMI;
+ if (MO.isDead())
+ LV->addVirtualRegisterDead(Reg, NewMI);
+ }
+ if (MO.isUse() && MO.isKill()) {
+ for (unsigned j = 0; j < 2; ++j) {
+ // Look at the two new MI's in reverse order.
+ MachineInstr *NewMI = NewMIs[j];
+ if (!NewMI->readsRegister(Reg))
+ continue;
+ LV->addVirtualRegisterKilled(Reg, NewMI);
+ if (VI.removeKill(MI))
+ VI.Kills.push_back(NewMI);
+ break;
+ }
}
}
}
}
// Branch analysis.
-bool ARMInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB,
- MachineBasicBlock *&FBB,
- std::vector<MachineOperand> &Cond) const {
+bool
+ ARMBaseInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB,
+ MachineBasicBlock *&FBB,
+ SmallVectorImpl<MachineOperand> &Cond,
+ bool AllowModify) const {
// If the block has no terminators, it just falls into the block after it.
MachineBasicBlock::iterator I = MBB.end();
if (I == MBB.begin() || !isUnpredicatedTerminator(--I))
return false;
-
+
// Get the last instruction in the block.
MachineInstr *LastInst = I;
-
+
// If there is only one terminator instruction, process it.
unsigned LastOpc = LastInst->getOpcode();
if (I == MBB.begin() || !isUnpredicatedTerminator(--I)) {
- if (LastOpc == ARM::B || LastOpc == ARM::tB) {
- TBB = LastInst->getOperand(0).getMachineBasicBlock();
+ if (LastOpc == ARM::B || LastOpc == ARM::tB || LastOpc == ARM::t2B) {
+ TBB = LastInst->getOperand(0).getMBB();
return false;
}
- if (LastOpc == ARM::Bcc || LastOpc == ARM::tBcc) {
+ if (LastOpc == ARM::Bcc || LastOpc == ARM::tBcc || LastOpc == ARM::t2Bcc) {
// Block ends with fall-through condbranch.
- TBB = LastInst->getOperand(0).getMachineBasicBlock();
+ TBB = LastInst->getOperand(0).getMBB();
Cond.push_back(LastInst->getOperand(1));
Cond.push_back(LastInst->getOperand(2));
return false;
}
return true; // Can't handle indirect branch.
}
-
+
// Get the instruction before it if it is a terminator.
MachineInstr *SecondLastInst = I;
-
+
// If there are three terminators, we don't know what sort of block this is.
if (SecondLastInst && I != MBB.begin() && isUnpredicatedTerminator(--I))
return true;
-
- // If the block ends with ARM::B/ARM::tB and a ARM::Bcc/ARM::tBcc, handle it.
+
+ // If the block ends with ARM::B/ARM::tB/ARM::t2B and a
+ // ARM::Bcc/ARM::tBcc/ARM::t2Bcc, handle it.
unsigned SecondLastOpc = SecondLastInst->getOpcode();
if ((SecondLastOpc == ARM::Bcc && LastOpc == ARM::B) ||
- (SecondLastOpc == ARM::tBcc && LastOpc == ARM::tB)) {
- TBB = SecondLastInst->getOperand(0).getMachineBasicBlock();
+ (SecondLastOpc == ARM::tBcc && LastOpc == ARM::tB) ||
+ (SecondLastOpc == ARM::t2Bcc && LastOpc == ARM::t2B)) {
+ TBB = SecondLastInst->getOperand(0).getMBB();
Cond.push_back(SecondLastInst->getOperand(1));
Cond.push_back(SecondLastInst->getOperand(2));
- FBB = LastInst->getOperand(0).getMachineBasicBlock();
+ FBB = LastInst->getOperand(0).getMBB();
return false;
}
-
- // If the block ends with two unconditional branches, handle it. The second
+
+ // If the block ends with two unconditional branches, handle it. The second
// one is not executed, so remove it.
- if ((SecondLastOpc == ARM::B || SecondLastOpc==ARM::tB) &&
- (LastOpc == ARM::B || LastOpc == ARM::tB)) {
- TBB = SecondLastInst->getOperand(0).getMachineBasicBlock();
+ if ((SecondLastOpc == ARM::B || SecondLastOpc==ARM::tB ||
+ SecondLastOpc==ARM::t2B) &&
+ (LastOpc == ARM::B || LastOpc == ARM::tB || LastOpc == ARM::t2B)) {
+ TBB = SecondLastInst->getOperand(0).getMBB();
I = LastInst;
- I->eraseFromParent();
+ if (AllowModify)
+ I->eraseFromParent();
return false;
}
- // Likewise if it ends with a branch table followed by an unconditional branch.
- // The branch folder can create these, and we must get rid of them for
+ // ...likewise if it ends with a branch table followed by an unconditional
+ // branch. The branch folder can create these, and we must get rid of them for
// correctness of Thumb constant islands.
if ((SecondLastOpc == ARM::BR_JTr || SecondLastOpc==ARM::BR_JTm ||
- SecondLastOpc == ARM::BR_JTadd || SecondLastOpc==ARM::tBR_JTr) &&
- (LastOpc == ARM::B || LastOpc == ARM::tB)) {
+ SecondLastOpc == ARM::BR_JTadd || SecondLastOpc==ARM::tBR_JTr ||
+ SecondLastOpc==ARM::t2BR_JTr) &&
+ (LastOpc == ARM::B || LastOpc == ARM::tB || LastOpc == ARM::t2B)) {
I = LastInst;
- I->eraseFromParent();
+ if (AllowModify)
+ I->eraseFromParent();
return true;
- }
+ }
// Otherwise, can't handle this.
return true;
}
-unsigned ARMInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
+unsigned ARMBaseInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
MachineFunction &MF = *MBB.getParent();
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
- int BOpc = AFI->isThumbFunction() ? ARM::tB : ARM::B;
- int BccOpc = AFI->isThumbFunction() ? ARM::tBcc : ARM::Bcc;
+ int BOpc = AFI->isThumbFunction() ?
+ (AFI->isThumb2Function() ? ARM::t2B : ARM::tB) : ARM::B;
+ int BccOpc = AFI->isThumbFunction() ?
+ (AFI->isThumb2Function() ? ARM::t2Bcc : ARM::tBcc) : ARM::Bcc;
MachineBasicBlock::iterator I = MBB.end();
if (I == MBB.begin()) return 0;
--I;
if (I->getOpcode() != BOpc && I->getOpcode() != BccOpc)
return 0;
-
+
// Remove the branch.
I->eraseFromParent();
-
+
I = MBB.end();
-
+
if (I == MBB.begin()) return 1;
--I;
if (I->getOpcode() != BccOpc)
return 1;
-
+
// Remove the branch.
I->eraseFromParent();
return 2;
}
-unsigned ARMInstrInfo::InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
- MachineBasicBlock *FBB,
- const std::vector<MachineOperand> &Cond) 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 = DebugLoc::getUnknownLoc();
MachineFunction &MF = *MBB.getParent();
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
- int BOpc = AFI->isThumbFunction() ? ARM::tB : ARM::B;
- int BccOpc = AFI->isThumbFunction() ? ARM::tBcc : ARM::Bcc;
+ int BOpc = AFI->isThumbFunction() ?
+ (AFI->isThumb2Function() ? ARM::t2B : ARM::tB) : ARM::B;
+ int BccOpc = AFI->isThumbFunction() ?
+ (AFI->isThumb2Function() ? ARM::t2Bcc : ARM::tBcc) : ARM::Bcc;
// Shouldn't be a fall through.
assert(TBB && "InsertBranch must not be told to insert a fallthrough");
assert((Cond.size() == 2 || Cond.size() == 0) &&
"ARM branch conditions have two components!");
-
+
if (FBB == 0) {
if (Cond.empty()) // Unconditional branch?
- BuildMI(&MBB, get(BOpc)).addMBB(TBB);
+ BuildMI(&MBB, dl, get(BOpc)).addMBB(TBB);
else
- BuildMI(&MBB, 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, get(BccOpc)).addMBB(TBB)
+ BuildMI(&MBB, dl, get(BccOpc)).addMBB(TBB)
.addImm(Cond[0].getImm()).addReg(Cond[1].getReg());
- BuildMI(&MBB, get(BOpc)).addMBB(FBB);
+ BuildMI(&MBB, dl, get(BOpc)).addMBB(FBB);
return 2;
}
-bool ARMInstrInfo::BlockHasNoFallThrough(MachineBasicBlock &MBB) const {
+bool ARMInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
+ MachineBasicBlock::iterator I,
+ unsigned DestReg, unsigned SrcReg,
+ const TargetRegisterClass *DestRC,
+ const TargetRegisterClass *SrcRC) const {
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (I != MBB.end()) DL = I->getDebugLoc();
+
+ if (DestRC != SrcRC) {
+ // Not yet supported!
+ return false;
+ }
+
+ if (DestRC == ARM::GPRRegisterClass)
+ AddDefaultCC(AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::MOVr), DestReg)
+ .addReg(SrcReg)));
+ else if (DestRC == ARM::SPRRegisterClass)
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FCPYS), DestReg)
+ .addReg(SrcReg));
+ else if (DestRC == ARM::DPRRegisterClass)
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FCPYD), DestReg)
+ .addReg(SrcReg));
+ else if (DestRC == ARM::QPRRegisterClass)
+ BuildMI(MBB, I, DL, get(ARM::VMOVQ), DestReg).addReg(SrcReg);
+ else
+ return false;
+
+ return true;
+}
+
+void ARMInstrInfo::
+storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
+ unsigned SrcReg, bool isKill, int FI,
+ const TargetRegisterClass *RC) const {
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (I != MBB.end()) DL = I->getDebugLoc();
+
+ if (RC == ARM::GPRRegisterClass) {
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::STR))
+ .addReg(SrcReg, getKillRegState(isKill))
+ .addFrameIndex(FI).addReg(0).addImm(0));
+ } else if (RC == ARM::DPRRegisterClass) {
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FSTD))
+ .addReg(SrcReg, getKillRegState(isKill))
+ .addFrameIndex(FI).addImm(0));
+ } else {
+ assert(RC == ARM::SPRRegisterClass && "Unknown regclass!");
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FSTS))
+ .addReg(SrcReg, getKillRegState(isKill))
+ .addFrameIndex(FI).addImm(0));
+ }
+}
+
+void ARMInstrInfo::storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
+ bool isKill,
+ SmallVectorImpl<MachineOperand> &Addr,
+ const TargetRegisterClass *RC,
+ SmallVectorImpl<MachineInstr*> &NewMIs) const{
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ unsigned Opc = 0;
+ if (RC == ARM::GPRRegisterClass) {
+ Opc = ARM::STR;
+ } else if (RC == ARM::DPRRegisterClass) {
+ Opc = ARM::FSTD;
+ } else {
+ assert(RC == ARM::SPRRegisterClass && "Unknown regclass!");
+ Opc = ARM::FSTS;
+ }
+
+ 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 ARMInstrInfo::
+loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
+ unsigned DestReg, int FI,
+ const TargetRegisterClass *RC) const {
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (I != MBB.end()) DL = I->getDebugLoc();
+
+ if (RC == ARM::GPRRegisterClass) {
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::LDR), DestReg)
+ .addFrameIndex(FI).addReg(0).addImm(0));
+ } else if (RC == ARM::DPRRegisterClass) {
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FLDD), DestReg)
+ .addFrameIndex(FI).addImm(0));
+ } else {
+ assert(RC == ARM::SPRRegisterClass && "Unknown regclass!");
+ AddDefaultPred(BuildMI(MBB, I, DL, get(ARM::FLDS), DestReg)
+ .addFrameIndex(FI).addImm(0));
+ }
+}
+
+void ARMInstrInfo::
+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 = ARM::LDR;
+ } else if (RC == ARM::DPRRegisterClass) {
+ Opc = ARM::FLDD;
+ } else {
+ assert(RC == ARM::SPRRegisterClass && "Unknown regclass!");
+ Opc = ARM::FLDS;
+ }
+
+ 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;
+}
+
+MachineInstr *ARMInstrInfo::
+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;
+ switch (Opc) {
+ default: break;
+ case ARM::MOVr: {
+ if (MI->getOperand(4).getReg() == ARM::CPSR)
+ // If it is updating CPSR, then it cannot be folded.
+ break;
+ unsigned Pred = MI->getOperand(2).getImm();
+ unsigned PredReg = MI->getOperand(3).getReg();
+ if (OpNum == 0) { // move -> store
+ unsigned SrcReg = MI->getOperand(1).getReg();
+ bool isKill = MI->getOperand(1).isKill();
+ NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::STR))
+ .addReg(SrcReg, getKillRegState(isKill))
+ .addFrameIndex(FI).addReg(0).addImm(0).addImm(Pred).addReg(PredReg);
+ } else { // move -> load
+ unsigned DstReg = MI->getOperand(0).getReg();
+ bool isDead = MI->getOperand(0).isDead();
+ NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::LDR))
+ .addReg(DstReg, RegState::Define | getDeadRegState(isDead))
+ .addFrameIndex(FI).addReg(0).addImm(0).addImm(Pred).addReg(PredReg);
+ }
+ break;
+ }
+ case ARM::FCPYS: {
+ unsigned Pred = MI->getOperand(2).getImm();
+ unsigned PredReg = MI->getOperand(3).getReg();
+ if (OpNum == 0) { // move -> store
+ unsigned SrcReg = MI->getOperand(1).getReg();
+ NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::FSTS))
+ .addReg(SrcReg).addFrameIndex(FI)
+ .addImm(0).addImm(Pred).addReg(PredReg);
+ } else { // move -> load
+ unsigned DstReg = MI->getOperand(0).getReg();
+ NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::FLDS), DstReg)
+ .addFrameIndex(FI)
+ .addImm(0).addImm(Pred).addReg(PredReg);
+ }
+ break;
+ }
+ case ARM::FCPYD: {
+ unsigned Pred = MI->getOperand(2).getImm();
+ unsigned PredReg = MI->getOperand(3).getReg();
+ if (OpNum == 0) { // move -> store
+ unsigned SrcReg = MI->getOperand(1).getReg();
+ bool isKill = MI->getOperand(1).isKill();
+ NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::FSTD))
+ .addReg(SrcReg, getKillRegState(isKill))
+ .addFrameIndex(FI).addImm(0).addImm(Pred).addReg(PredReg);
+ } else { // move -> load
+ unsigned DstReg = MI->getOperand(0).getReg();
+ bool isDead = MI->getOperand(0).isDead();
+ NewMI = BuildMI(MF, MI->getDebugLoc(), get(ARM::FLDD))
+ .addReg(DstReg, RegState::Define | getDeadRegState(isDead))
+ .addFrameIndex(FI).addImm(0).addImm(Pred).addReg(PredReg);
+ }
+ break;
+ }
+ }
+
+ return NewMI;
+}
+
+bool
+ARMInstrInfo::canFoldMemoryOperand(const MachineInstr *MI,
+ const SmallVectorImpl<unsigned> &Ops) const {
+ if (Ops.size() != 1) return false;
+
+ unsigned Opc = MI->getOpcode();
+ switch (Opc) {
+ default: break;
+ case ARM::MOVr:
+ // If it is updating CPSR, then it cannot be folded.
+ return MI->getOperand(4).getReg() != ARM::CPSR;
+ case ARM::FCPYS:
+ case ARM::FCPYD:
+ return true;
+
+ case ARM::VMOVD:
+ case ARM::VMOVQ:
+ return false; // FIXME
+ }
+
+ return false;
+}
+
+bool
+ARMBaseInstrInfo::BlockHasNoFallThrough(const MachineBasicBlock &MBB) const {
if (MBB.empty()) return false;
-
+
switch (MBB.back().getOpcode()) {
case ARM::BX_RET: // Return.
case ARM::LDM_RET:
case ARM::tBX_RET_vararg:
case ARM::tPOP_RET:
case ARM::B:
- case ARM::tB: // Uncond branch.
+ case ARM::tB:
+ case ARM::t2B: // Uncond branch.
case ARM::tBR_JTr:
+ case ARM::t2BR_JTr:
case ARM::BR_JTr: // Jumptable branch.
case ARM::BR_JTm: // Jumptable branch through mem.
case ARM::BR_JTadd: // Jumptable branch add to pc.
}
}
-bool ARMInstrInfo::
-ReverseBranchCondition(std::vector<MachineOperand> &Cond) const {
+bool ARMBaseInstrInfo::
+ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
ARMCC::CondCodes CC = (ARMCC::CondCodes)(int)Cond[0].getImm();
Cond[0].setImm(ARMCC::getOppositeCondition(CC));
return false;
}
-bool ARMInstrInfo::isPredicated(const MachineInstr *MI) const {
+bool ARMBaseInstrInfo::isPredicated(const MachineInstr *MI) const {
int PIdx = MI->findFirstPredOperandIdx();
- return PIdx != -1 && MI->getOperand(PIdx).getImmedValue() != ARMCC::AL;
+ return PIdx != -1 && MI->getOperand(PIdx).getImm() != ARMCC::AL;
}
-bool ARMInstrInfo::PredicateInstruction(MachineInstr *MI,
- const std::vector<MachineOperand> &Pred) const {
+bool ARMBaseInstrInfo::
+PredicateInstruction(MachineInstr *MI,
+ const SmallVectorImpl<MachineOperand> &Pred) const {
unsigned Opc = MI->getOpcode();
- if (Opc == ARM::B || Opc == ARM::tB) {
- MI->setInstrDescriptor(get(Opc == ARM::B ? ARM::Bcc : ARM::tBcc));
- MI->addImmOperand(Pred[0].getImmedValue());
- MI->addRegOperand(Pred[1].getReg(), false);
+ if (Opc == ARM::B || Opc == ARM::tB || Opc == ARM::t2B) {
+ MI->setDesc(get((Opc == ARM::B) ? ARM::Bcc :
+ ((Opc == ARM::tB) ? ARM::tBcc : ARM::t2Bcc)));
+ MI->addOperand(MachineOperand::CreateImm(Pred[0].getImm()));
+ MI->addOperand(MachineOperand::CreateReg(Pred[1].getReg(), false));
return true;
}
int PIdx = MI->findFirstPredOperandIdx();
if (PIdx != -1) {
MachineOperand &PMO = MI->getOperand(PIdx);
- PMO.setImm(Pred[0].getImmedValue());
+ PMO.setImm(Pred[0].getImm());
MI->getOperand(PIdx+1).setReg(Pred[1].getReg());
return true;
}
return false;
}
-bool
-ARMInstrInfo::SubsumesPredicate(const std::vector<MachineOperand> &Pred1,
- const std::vector<MachineOperand> &Pred2) const{
+bool ARMBaseInstrInfo::
+SubsumesPredicate(const SmallVectorImpl<MachineOperand> &Pred1,
+ const SmallVectorImpl<MachineOperand> &Pred2) const {
if (Pred1.size() > 2 || Pred2.size() > 2)
return false;
- ARMCC::CondCodes CC1 = (ARMCC::CondCodes)Pred1[0].getImmedValue();
- ARMCC::CondCodes CC2 = (ARMCC::CondCodes)Pred2[0].getImmedValue();
+ ARMCC::CondCodes CC1 = (ARMCC::CondCodes)Pred1[0].getImm();
+ ARMCC::CondCodes CC2 = (ARMCC::CondCodes)Pred2[0].getImm();
if (CC1 == CC2)
return true;
}
}
-bool ARMInstrInfo::DefinesPredicate(MachineInstr *MI,
+bool ARMBaseInstrInfo::DefinesPredicate(MachineInstr *MI,
std::vector<MachineOperand> &Pred) const {
- const TargetInstrDescriptor *TID = MI->getInstrDescriptor();
- if (!TID->ImplicitDefs && (TID->Flags & M_HAS_OPTIONAL_DEF) == 0)
+ const TargetInstrDesc &TID = MI->getDesc();
+ if (!TID.getImplicitDefs() && !TID.hasOptionalDef())
return false;
bool Found = false;
/// GetInstSize - Return the size of the specified MachineInstr.
///
-unsigned ARM::GetInstSize(MachineInstr *MI) {
- MachineBasicBlock &MBB = *MI->getParent();
+unsigned ARMBaseInstrInfo::GetInstSizeInBytes(const MachineInstr *MI) const {
+ const MachineBasicBlock &MBB = *MI->getParent();
const MachineFunction *MF = MBB.getParent();
const TargetAsmInfo *TAI = MF->getTarget().getTargetAsmInfo();
// Basic size info comes from the TSFlags field.
- const TargetInstrDescriptor *TID = MI->getInstrDescriptor();
- unsigned TSFlags = TID->TSFlags;
-
+ const TargetInstrDesc &TID = MI->getDesc();
+ unsigned TSFlags = TID.TSFlags;
+
switch ((TSFlags & ARMII::SizeMask) >> ARMII::SizeShift) {
- default:
+ default: {
// If this machine instr is an inline asm, measure it.
if (MI->getOpcode() == ARM::INLINEASM)
return TAI->getInlineAsmLength(MI->getOperand(0).getSymbolName());
- if (MI->getOpcode() == ARM::LABEL)
+ if (MI->isLabel())
return 0;
- assert(0 && "Unknown or unset size field for instr!");
+ switch (MI->getOpcode()) {
+ default:
+ assert(0 && "Unknown or unset size field for instr!");
+ break;
+ case TargetInstrInfo::IMPLICIT_DEF:
+ case TargetInstrInfo::DECLARE:
+ case TargetInstrInfo::DBG_LABEL:
+ case TargetInstrInfo::EH_LABEL:
+ return 0;
+ }
break;
+ }
case ARMII::Size8Bytes: return 8; // Arm instruction x 2.
case ARMII::Size4Bytes: return 4; // Arm instruction.
case ARMII::Size2Bytes: return 2; // Thumb instruction.
// If this machine instr is a constant pool entry, its size is recorded as
// operand #2.
return MI->getOperand(2).getImm();
+ case ARM::Int_eh_sjlj_setjmp: return 12;
case ARM::BR_JTr:
case ARM::BR_JTm:
case ARM::BR_JTadd:
- case ARM::tBR_JTr: {
+ case ARM::tBR_JTr:
+ case ARM::t2BR_JTr: {
// These are jumptable branches, i.e. a branch followed by an inlined
// jumptable. The size is 4 + 4 * number of entries.
- unsigned NumOps = TID->numOperands;
+ unsigned NumOps = TID.getNumOperands();
MachineOperand JTOP =
- MI->getOperand(NumOps - ((TID->Flags & M_PREDICABLE) ? 3 : 2));
- unsigned JTI = JTOP.getJumpTableIndex();
- MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
+ MI->getOperand(NumOps - (TID.isPredicable() ? 3 : 2));
+ unsigned JTI = JTOP.getIndex();
+ const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
assert(JTI < JT.size());
// Thumb instructions are 2 byte aligned, but JT entries are 4 byte
// FIXME: If we know the size of the function is less than (1 << 16) *2
// bytes, we can use 16-bit entries instead. Then there won't be an
// alignment issue.
- return getNumJTEntries(JT, JTI) * 4 +
- (MI->getOpcode()==ARM::tBR_JTr ? 2 : 4);
+ return getNumJTEntries(JT, JTI) * 4 +
+ ((MI->getOpcode()==ARM::tBR_JTr ||
+ MI->getOpcode()==ARM::t2BR_JTr) ? 2 : 4);
}
default:
// Otherwise, pseudo-instruction sizes are zero.
}
}
}
-}
-
-/// GetFunctionSize - Returns the size of the specified MachineFunction.
-///
-unsigned ARM::GetFunctionSize(MachineFunction &MF) {
- unsigned FnSize = 0;
- for (MachineFunction::iterator MBBI = MF.begin(), E = MF.end();
- MBBI != E; ++MBBI) {
- MachineBasicBlock &MBB = *MBBI;
- for (MachineBasicBlock::iterator I = MBB.begin(),E = MBB.end(); I != E; ++I)
- FnSize += ARM::GetInstSize(I);
- }
- return FnSize;
+ return 0; // Not reached
}
projects / oota-llvm.git / blobdiff