#include "ARMTargetMachine.h"
#include "ARMSubtarget.h"
#include "ARMConstantPoolValue.h"
+#include "MCTargetDesc/ARMAddressingModes.h"
#include "llvm/CallingConv.h"
#include "llvm/DerivedTypes.h"
#include "llvm/GlobalVariable.h"
} Base;
int Offset;
- unsigned Scale;
- unsigned PlusReg;
// Innocuous defaults for our address.
Address()
- : BaseType(RegBase), Offset(0), Scale(0), PlusReg(0) {
+ : BaseType(RegBase), Offset(0) {
Base.Reg = 0;
}
} Address;
virtual unsigned FastEmitInst_i(unsigned MachineInstOpcode,
const TargetRegisterClass *RC,
uint64_t Imm);
+ virtual unsigned FastEmitInst_ii(unsigned MachineInstOpcode,
+ const TargetRegisterClass *RC,
+ uint64_t Imm1, uint64_t Imm2);
virtual unsigned FastEmitInst_extractsubreg(MVT RetVT,
unsigned Op0, bool Op0IsKill,
bool SelectCall(const Instruction *I);
bool SelectSelect(const Instruction *I);
bool SelectRet(const Instruction *I);
+ bool SelectIntCast(const Instruction *I);
// Utility routines.
private:
- bool isTypeLegal(const Type *Ty, MVT &VT);
- bool isLoadTypeLegal(const Type *Ty, MVT &VT);
+ bool isTypeLegal(Type *Ty, MVT &VT);
+ bool isLoadTypeLegal(Type *Ty, MVT &VT);
bool ARMEmitLoad(EVT VT, unsigned &ResultReg, Address &Addr);
bool ARMEmitStore(EVT VT, unsigned SrcReg, Address &Addr);
bool ARMComputeAddress(const Value *Obj, Address &Addr);
bool DefinesOptionalPredicate(MachineInstr *MI, bool *CPSR);
const MachineInstrBuilder &AddOptionalDefs(const MachineInstrBuilder &MIB);
void AddLoadStoreOperands(EVT VT, Address &Addr,
- const MachineInstrBuilder &MIB);
+ const MachineInstrBuilder &MIB,
+ unsigned Flags);
};
} // end anonymous namespace
// we don't care about implicit defs here, just places we'll need to add a
// default CCReg argument. Sets CPSR if we're setting CPSR instead of CCR.
bool ARMFastISel::DefinesOptionalPredicate(MachineInstr *MI, bool *CPSR) {
- const TargetInstrDesc &TID = MI->getDesc();
- if (!TID.hasOptionalDef())
+ const MCInstrDesc &MCID = MI->getDesc();
+ if (!MCID.hasOptionalDef())
return false;
// Look to see if our OptionalDef is defining CPSR or CCR.
}
bool ARMFastISel::isARMNEONPred(const MachineInstr *MI) {
- const TargetInstrDesc &TID = MI->getDesc();
-
+ const MCInstrDesc &MCID = MI->getDesc();
+
// If we're a thumb2 or not NEON function we were handled via isPredicable.
- if ((TID.TSFlags & ARMII::DomainMask) != ARMII::DomainNEON ||
+ if ((MCID.TSFlags & ARMII::DomainMask) != ARMII::DomainNEON ||
AFI->isThumb2Function())
return false;
-
- for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i)
- if (TID.OpInfo[i].isPredicate())
+
+ for (unsigned i = 0, e = MCID.getNumOperands(); i != e; ++i)
+ if (MCID.OpInfo[i].isPredicate())
return true;
-
+
return false;
}
// we're not predicable but add it anyways.
if (TII.isPredicable(MI) || isARMNEONPred(MI))
AddDefaultPred(MIB);
-
+
// Do we optionally set a predicate? Preds is size > 0 iff the predicate
// defines CPSR. All other OptionalDefines in ARM are the CCR register.
bool CPSR = false;
unsigned ARMFastISel::FastEmitInst_(unsigned MachineInstOpcode,
const TargetRegisterClass* RC) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg));
return ResultReg;
const TargetRegisterClass *RC,
unsigned Op0, bool Op0IsKill) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
unsigned Op0, bool Op0IsKill,
unsigned Op1, bool Op1IsKill) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
unsigned Op1, bool Op1IsKill,
unsigned Op2, bool Op2IsKill) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
unsigned Op0, bool Op0IsKill,
uint64_t Imm) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
unsigned Op0, bool Op0IsKill,
const ConstantFP *FPImm) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
unsigned Op1, bool Op1IsKill,
uint64_t Imm) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
const TargetRegisterClass *RC,
uint64_t Imm) {
unsigned ResultReg = createResultReg(RC);
- const TargetInstrDesc &II = TII.get(MachineInstOpcode);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
if (II.getNumDefs() >= 1)
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
return ResultReg;
}
+unsigned ARMFastISel::FastEmitInst_ii(unsigned MachineInstOpcode,
+ const TargetRegisterClass *RC,
+ uint64_t Imm1, uint64_t Imm2) {
+ unsigned ResultReg = createResultReg(RC);
+ const MCInstrDesc &II = TII.get(MachineInstOpcode);
+
+ if (II.getNumDefs() >= 1)
+ AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II, ResultReg)
+ .addImm(Imm1).addImm(Imm2));
+ else {
+ AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, II)
+ .addImm(Imm1).addImm(Imm2));
+ AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
+ TII.get(TargetOpcode::COPY),
+ ResultReg)
+ .addReg(II.ImplicitDefs[0]));
+ }
+ return ResultReg;
+}
+
unsigned ARMFastISel::FastEmitInst_extractsubreg(MVT RetVT,
unsigned Op0, bool Op0IsKill,
uint32_t Idx) {
// This checks to see if we can use VFP3 instructions to materialize
// a constant, otherwise we have to go through the constant pool.
if (TLI.isFPImmLegal(Val, VT)) {
- unsigned Opc = is64bit ? ARM::FCONSTD : ARM::FCONSTS;
+ int Imm;
+ unsigned Opc;
+ if (is64bit) {
+ Imm = ARM_AM::getFP64Imm(Val);
+ Opc = ARM::FCONSTD;
+ } else {
+ Imm = ARM_AM::getFP32Imm(Val);
+ Opc = ARM::FCONSTS;
+ }
unsigned DestReg = createResultReg(TLI.getRegClassFor(VT));
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(Opc),
DestReg)
- .addFPImm(CFP));
+ .addImm(Imm));
return DestReg;
}
Reloc::Model RelocM = TM.getRelocationModel();
- // TODO: No external globals for now.
- if (Subtarget->GVIsIndirectSymbol(GV, RelocM)) return 0;
-
// TODO: Need more magic for ARM PIC.
if (!isThumb && (RelocM == Reloc::PIC_)) return 0;
// Grab index.
unsigned PCAdj = (RelocM != Reloc::PIC_) ? 0 : (Subtarget->isThumb() ? 4 : 8);
unsigned Id = AFI->createPICLabelUId();
- ARMConstantPoolValue *CPV = new ARMConstantPoolValue(GV, Id,
- ARMCP::CPValue, PCAdj);
+ ARMConstantPoolValue *CPV = ARMConstantPoolConstant::Create(GV, Id,
+ ARMCP::CPValue,
+ PCAdj);
unsigned Idx = MCP.getConstantPoolIndex(CPV, Align);
// Load value.
.addImm(0);
}
AddOptionalDefs(MIB);
+
+ if (Subtarget->GVIsIndirectSymbol(GV, RelocM)) {
+ unsigned NewDestReg = createResultReg(TLI.getRegClassFor(VT));
+ if (isThumb)
+ MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
+ TII.get(ARM::t2LDRi12), NewDestReg)
+ .addReg(DestReg)
+ .addImm(0);
+ else
+ MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(ARM::LDRi12),
+ NewDestReg)
+ .addReg(DestReg)
+ .addImm(0);
+ DestReg = NewDestReg;
+ AddOptionalDefs(MIB);
+ }
+
return DestReg;
}
return 0;
}
-bool ARMFastISel::isTypeLegal(const Type *Ty, MVT &VT) {
+bool ARMFastISel::isTypeLegal(Type *Ty, MVT &VT) {
EVT evt = TLI.getValueType(Ty, true);
// Only handle simple types.
return TLI.isTypeLegal(VT);
}
-bool ARMFastISel::isLoadTypeLegal(const Type *Ty, MVT &VT) {
+bool ARMFastISel::isLoadTypeLegal(Type *Ty, MVT &VT) {
if (isTypeLegal(Ty, VT)) return true;
// If this is a type than can be sign or zero-extended to a basic operation
U = C;
}
- if (const PointerType *Ty = dyn_cast<PointerType>(Obj->getType()))
+ if (PointerType *Ty = dyn_cast<PointerType>(Obj->getType()))
if (Ty->getAddressSpace() > 255)
// Fast instruction selection doesn't support the special
// address spaces.
for (User::const_op_iterator i = U->op_begin() + 1, e = U->op_end();
i != e; ++i, ++GTI) {
const Value *Op = *i;
- if (const StructType *STy = dyn_cast<StructType>(*GTI)) {
+ if (StructType *STy = dyn_cast<StructType>(*GTI)) {
const StructLayout *SL = TD.getStructLayout(STy);
unsigned Idx = cast<ConstantInt>(Op)->getZExtValue();
TmpOffset += SL->getElementOffset(Idx);
FuncInfo.MBBMap[cast<Instruction>(Op)->getParent()]
== FuncInfo.MBB) &&
isa<ConstantInt>(cast<AddOperator>(Op)->getOperand(1))) {
- // An add (in the same block) with a constant operand. Fold the
+ // An add (in the same block) with a constant operand. Fold the
// constant.
ConstantInt *CI =
cast<ConstantInt>(cast<AddOperator>(Op)->getOperand(1));
// Iterate on the other operand.
Op = cast<AddOperator>(Op)->getOperand(0);
continue;
- }
+ }
// Unsupported
goto unsupported_gep;
}
// Since the offset is too large for the load/store instruction
// get the reg+offset into a register.
if (needsLowering) {
- ARMCC::CondCodes Pred = ARMCC::AL;
- unsigned PredReg = 0;
-
- TargetRegisterClass *RC = isThumb ? ARM::tGPRRegisterClass :
- ARM::GPRRegisterClass;
- unsigned BaseReg = createResultReg(RC);
-
- if (!isThumb)
- emitARMRegPlusImmediate(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
- BaseReg, Addr.Base.Reg, Addr.Offset,
- Pred, PredReg,
- static_cast<const ARMBaseInstrInfo&>(TII));
- else {
- assert(AFI->isThumb2Function());
- emitT2RegPlusImmediate(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
- BaseReg, Addr.Base.Reg, Addr.Offset, Pred, PredReg,
- static_cast<const ARMBaseInstrInfo&>(TII));
- }
+ Addr.Base.Reg = FastEmit_ri_(MVT::i32, ISD::ADD, Addr.Base.Reg,
+ /*Op0IsKill*/false, Addr.Offset, MVT::i32);
Addr.Offset = 0;
- Addr.Base.Reg = BaseReg;
}
}
void ARMFastISel::AddLoadStoreOperands(EVT VT, Address &Addr,
- const MachineInstrBuilder &MIB) {
+ const MachineInstrBuilder &MIB,
+ unsigned Flags) {
// addrmode5 output depends on the selection dag addressing dividing the
// offset by 4 that it then later multiplies. Do this here as well.
if (VT.getSimpleVT().SimpleTy == MVT::f32 ||
VT.getSimpleVT().SimpleTy == MVT::f64)
Addr.Offset /= 4;
-
+
// Frame base works a bit differently. Handle it separately.
if (Addr.BaseType == Address::FrameIndexBase) {
int FI = Addr.Base.FI;
MachineMemOperand *MMO =
FuncInfo.MF->getMachineMemOperand(
MachinePointerInfo::getFixedStack(FI, Offset),
- MachineMemOperand::MOLoad,
+ Flags,
MFI.getObjectSize(FI),
MFI.getObjectAlignment(FI));
// Now add the rest of the operands.
} else {
// Now add the rest of the operands.
MIB.addReg(Addr.Base.Reg);
-
+
// ARM halfword load/stores need an additional operand.
if (!isThumb && VT.getSimpleVT().SimpleTy == MVT::i16) MIB.addReg(0);
ResultReg = createResultReg(RC);
MachineInstrBuilder MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(Opc), ResultReg);
- AddLoadStoreOperands(VT, Addr, MIB);
+ AddLoadStoreOperands(VT, Addr, MIB, MachineMemOperand::MOLoad);
return true;
}
bool ARMFastISel::SelectLoad(const Instruction *I) {
+ // Atomic loads need special handling.
+ if (cast<LoadInst>(I)->isAtomic())
+ return false;
+
// Verify we have a legal type before going any further.
MVT VT;
if (!isLoadTypeLegal(I->getType(), VT))
MachineInstrBuilder MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(StrOpc))
.addReg(SrcReg, getKillRegState(true));
- AddLoadStoreOperands(VT, Addr, MIB);
+ AddLoadStoreOperands(VT, Addr, MIB, MachineMemOperand::MOStore);
return true;
}
Value *Op0 = I->getOperand(0);
unsigned SrcReg = 0;
+ // Atomic stores need special handling.
+ if (cast<StoreInst>(I)->isAtomic())
+ return false;
+
// Verify we have a legal type before going any further.
MVT VT;
if (!isLoadTypeLegal(I->getOperand(0)->getType(), VT))
// behavior.
// TODO: Factor this out.
if (const CmpInst *CI = dyn_cast<CmpInst>(BI->getCondition())) {
- if (CI->hasOneUse() && (CI->getParent() == I->getParent())) {
- MVT VT;
- const Type *Ty = CI->getOperand(0)->getType();
- if (!isTypeLegal(Ty, VT))
- return false;
-
+ MVT SourceVT;
+ Type *Ty = CI->getOperand(0)->getType();
+ if (CI->hasOneUse() && (CI->getParent() == I->getParent())
+ && isTypeLegal(Ty, SourceVT)) {
bool isFloat = (Ty->isDoubleTy() || Ty->isFloatTy());
if (isFloat && !Subtarget->hasVFP2())
return false;
unsigned CmpOpc;
- switch (VT.SimpleTy) {
+ switch (SourceVT.SimpleTy) {
default: return false;
// TODO: Verify compares.
case MVT::f32:
}
// Get the compare predicate.
- ARMCC::CondCodes ARMPred = getComparePred(CI->getPredicate());
+ // Try to take advantage of fallthrough opportunities.
+ CmpInst::Predicate Predicate = CI->getPredicate();
+ if (FuncInfo.MBB->isLayoutSuccessor(TBB)) {
+ std::swap(TBB, FBB);
+ Predicate = CmpInst::getInversePredicate(Predicate);
+ }
+
+ ARMCC::CondCodes ARMPred = getComparePred(Predicate);
// We may not handle every CC for now.
if (ARMPred == ARMCC::AL) return false;
unsigned BrOpc = isThumb ? ARM::t2Bcc : ARM::Bcc;
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(BrOpc))
.addMBB(TBB).addImm(ARMPred).addReg(ARM::CPSR);
+ FastEmitBranch(FBB, DL);
+ FuncInfo.MBB->addSuccessor(TBB);
+ return true;
+ }
+ } else if (TruncInst *TI = dyn_cast<TruncInst>(BI->getCondition())) {
+ MVT SourceVT;
+ if (TI->hasOneUse() && TI->getParent() == I->getParent() &&
+ (isLoadTypeLegal(TI->getOperand(0)->getType(), SourceVT))) {
+ unsigned TstOpc = isThumb ? ARM::t2TSTri : ARM::TSTri;
+ unsigned OpReg = getRegForValue(TI->getOperand(0));
+ AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
+ TII.get(TstOpc))
+ .addReg(OpReg).addImm(1));
+
+ unsigned CCMode = ARMCC::NE;
+ if (FuncInfo.MBB->isLayoutSuccessor(TBB)) {
+ std::swap(TBB, FBB);
+ CCMode = ARMCC::EQ;
+ }
+
+ unsigned BrOpc = isThumb ? ARM::t2Bcc : ARM::Bcc;
+ BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(BrOpc))
+ .addMBB(TBB).addImm(CCMode).addReg(ARM::CPSR);
+
FastEmitBranch(FBB, DL);
FuncInfo.MBB->addSuccessor(TBB);
return true;
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(TstOpc))
.addReg(CmpReg).addImm(1));
+ unsigned CCMode = ARMCC::NE;
+ if (FuncInfo.MBB->isLayoutSuccessor(TBB)) {
+ std::swap(TBB, FBB);
+ CCMode = ARMCC::EQ;
+ }
+
unsigned BrOpc = isThumb ? ARM::t2Bcc : ARM::Bcc;
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(BrOpc))
- .addMBB(TBB).addImm(ARMCC::NE).addReg(ARM::CPSR);
+ .addMBB(TBB).addImm(CCMode).addReg(ARM::CPSR);
FastEmitBranch(FBB, DL);
FuncInfo.MBB->addSuccessor(TBB);
return true;
const CmpInst *CI = cast<CmpInst>(I);
MVT VT;
- const Type *Ty = CI->getOperand(0)->getType();
+ Type *Ty = CI->getOperand(0)->getType();
if (!isTypeLegal(Ty, VT))
return false;
if (!Subtarget->hasVFP2()) return false;
MVT DstVT;
- const Type *Ty = I->getType();
+ Type *Ty = I->getType();
if (!isTypeLegal(Ty, DstVT))
return false;
+ // FIXME: Handle sign-extension where necessary.
+ if (!I->getOperand(0)->getType()->isIntegerTy(32))
+ return false;
+
unsigned Op = getRegForValue(I->getOperand(0));
if (Op == 0) return false;
unsigned Opc;
if (Ty->isFloatTy()) Opc = ARM::VSITOS;
else if (Ty->isDoubleTy()) Opc = ARM::VSITOD;
- else return 0;
+ else return false;
unsigned ResultReg = createResultReg(TLI.getRegClassFor(DstVT));
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(Opc),
if (!Subtarget->hasVFP2()) return false;
MVT DstVT;
- const Type *RetTy = I->getType();
+ Type *RetTy = I->getType();
if (!isTypeLegal(RetTy, DstVT))
return false;
if (Op == 0) return false;
unsigned Opc;
- const Type *OpTy = I->getOperand(0)->getType();
+ Type *OpTy = I->getOperand(0)->getType();
if (OpTy->isFloatTy()) Opc = ARM::VTOSIZS;
else if (OpTy->isDoubleTy()) Opc = ARM::VTOSIZD;
- else return 0;
+ else return false;
// f64->s32 or f32->s32 both need an intermediate f32 reg.
unsigned ResultReg = createResultReg(TLI.getRegClassFor(MVT::f32));
bool ARMFastISel::SelectSDiv(const Instruction *I) {
MVT VT;
- const Type *Ty = I->getType();
+ Type *Ty = I->getType();
if (!isTypeLegal(Ty, VT))
return false;
bool ARMFastISel::SelectSRem(const Instruction *I) {
MVT VT;
- const Type *Ty = I->getType();
+ Type *Ty = I->getType();
if (!isTypeLegal(Ty, VT))
return false;
// operations, but can't figure out how to. Just use the vfp instructions
// if we have them.
// FIXME: It'd be nice to use NEON instructions.
- const Type *Ty = I->getType();
+ Type *Ty = I->getType();
bool isFloat = (Ty->isDoubleTy() || Ty->isFloatTy());
if (isFloat && !Subtarget->hasVFP2())
return false;
CallingConv::ID CC,
unsigned &NumBytes) {
SmallVector<CCValAssign, 16> ArgLocs;
- CCState CCInfo(CC, false, TM, ArgLocs, *Context);
+ CCState CCInfo(CC, false, *FuncInfo.MF, TM, ArgLocs, *Context);
CCInfo.AnalyzeCallOperands(ArgVTs, ArgFlags, CCAssignFnForCall(CC, false));
// Get a count of how many bytes are to be pushed on the stack.
NumBytes = CCInfo.getNextStackOffset();
// Issue CALLSEQ_START
- unsigned AdjStackDown = TM.getRegisterInfo()->getCallFrameSetupOpcode();
+ unsigned AdjStackDown = TII.getCallFrameSetupOpcode();
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(AdjStackDown))
.addImm(NumBytes));
const Instruction *I, CallingConv::ID CC,
unsigned &NumBytes) {
// Issue CALLSEQ_END
- unsigned AdjStackUp = TM.getRegisterInfo()->getCallFrameDestroyOpcode();
+ unsigned AdjStackUp = TII.getCallFrameDestroyOpcode();
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(AdjStackUp))
.addImm(NumBytes).addImm(0));
// Now the return value.
if (RetVT != MVT::isVoid) {
SmallVector<CCValAssign, 16> RVLocs;
- CCState CCInfo(CC, false, TM, RVLocs, *Context);
+ CCState CCInfo(CC, false, *FuncInfo.MF, TM, RVLocs, *Context);
CCInfo.AnalyzeCallResult(RetVT, CCAssignFnForCall(CC, true));
// Copy all of the result registers out of their specified physreg.
// Analyze operands of the call, assigning locations to each operand.
SmallVector<CCValAssign, 16> ValLocs;
- CCState CCInfo(CC, F.isVarArg(), TM, ValLocs, I->getContext());
+ CCState CCInfo(CC, F.isVarArg(), *FuncInfo.MF, TM, ValLocs,I->getContext());
CCInfo.AnalyzeReturn(Outs, CCAssignFnForCall(CC, true /* is Ret */));
const Value *RV = Ret->getOperand(0);
CallingConv::ID CC = TLI.getLibcallCallingConv(Call);
// Handle *simple* calls for now.
- const Type *RetTy = I->getType();
+ Type *RetTy = I->getType();
MVT RetVT;
if (RetTy->isVoidTy())
RetVT = MVT::isVoid;
else if (!isTypeLegal(RetTy, RetVT))
return false;
- // For now we're using BLX etc on the assumption that we have v5t ops.
- if (!Subtarget->hasV5TOps()) return false;
-
// TODO: For now if we have long calls specified we don't handle the call.
if (EnableARMLongCalls) return false;
unsigned Arg = getRegForValue(Op);
if (Arg == 0) return false;
- const Type *ArgTy = Op->getType();
+ Type *ArgTy = Op->getType();
MVT ArgVT;
if (!isTypeLegal(ArgTy, ArgVT)) return false;
if (!ProcessCallArgs(Args, ArgRegs, ArgVTs, ArgFlags, RegArgs, CC, NumBytes))
return false;
- // Issue the call, BLXr9 for darwin, BLX otherwise. This uses V5 ops.
+ // Issue the call, BLr9 for darwin, BL otherwise.
// TODO: Turn this into the table of arm call ops.
MachineInstrBuilder MIB;
unsigned CallOpc = ARMSelectCallOp(NULL);
// Can't handle inline asm or worry about intrinsics yet.
if (isa<InlineAsm>(Callee) || isa<IntrinsicInst>(CI)) return false;
- // Only handle global variable Callees that are direct calls.
+ // Only handle global variable Callees.
const GlobalValue *GV = dyn_cast<GlobalValue>(Callee);
- if (!GV || Subtarget->GVIsIndirectSymbol(GV, TM.getRelocationModel()))
+ if (!GV)
return false;
// Check the calling convention.
// TODO: Avoid some calling conventions?
// Let SDISel handle vararg functions.
- const PointerType *PT = cast<PointerType>(CS.getCalledValue()->getType());
- const FunctionType *FTy = cast<FunctionType>(PT->getElementType());
+ PointerType *PT = cast<PointerType>(CS.getCalledValue()->getType());
+ FunctionType *FTy = cast<FunctionType>(PT->getElementType());
if (FTy->isVarArg())
return false;
// Handle *simple* calls for now.
- const Type *RetTy = I->getType();
+ Type *RetTy = I->getType();
MVT RetVT;
if (RetTy->isVoidTy())
RetVT = MVT::isVoid;
else if (!isTypeLegal(RetTy, RetVT))
return false;
- // For now we're using BLX etc on the assumption that we have v5t ops.
- // TODO: Maybe?
- if (!Subtarget->hasV5TOps()) return false;
-
// TODO: For now if we have long calls specified we don't handle the call.
if (EnableARMLongCalls) return false;
-
+
// Set up the argument vectors.
SmallVector<Value*, 8> Args;
SmallVector<unsigned, 8> ArgRegs;
CS.paramHasAttr(AttrInd, Attribute::ByVal))
return false;
- const Type *ArgTy = (*i)->getType();
+ Type *ArgTy = (*i)->getType();
MVT ArgVT;
if (!isTypeLegal(ArgTy, ArgVT))
return false;
if (!ProcessCallArgs(Args, ArgRegs, ArgVTs, ArgFlags, RegArgs, CC, NumBytes))
return false;
- // Issue the call, BLXr9 for darwin, BLX otherwise. This uses V5 ops.
+ // Issue the call, BLr9 for darwin, BL otherwise.
// TODO: Turn this into the table of arm call ops.
MachineInstrBuilder MIB;
unsigned CallOpc = ARMSelectCallOp(GV);
MIB = AddDefaultPred(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(CallOpc))
.addGlobalAddress(GV, 0, 0));
-
+
// Add implicit physical register uses to the call.
for (unsigned i = 0, e = RegArgs.size(); i != e; ++i)
MIB.addReg(RegArgs[i]);
}
+bool ARMFastISel::SelectIntCast(const Instruction *I) {
+ // On ARM, in general, integer casts don't involve legal types; this code
+ // handles promotable integers. The high bits for a type smaller than
+ // the register size are assumed to be undefined.
+ Type *DestTy = I->getType();
+ Value *Op = I->getOperand(0);
+ Type *SrcTy = Op->getType();
+
+ EVT SrcVT, DestVT;
+ SrcVT = TLI.getValueType(SrcTy, true);
+ DestVT = TLI.getValueType(DestTy, true);
+
+ if (isa<TruncInst>(I)) {
+ if (SrcVT != MVT::i32 && SrcVT != MVT::i16 && SrcVT != MVT::i8)
+ return false;
+ if (DestVT != MVT::i16 && DestVT != MVT::i8 && DestVT != MVT::i1)
+ return false;
+
+ unsigned SrcReg = getRegForValue(Op);
+ if (!SrcReg) return false;
+
+ // Because the high bits are undefined, a truncate doesn't generate
+ // any code.
+ UpdateValueMap(I, SrcReg);
+ return true;
+ }
+ if (DestVT != MVT::i32 && DestVT != MVT::i16 && DestVT != MVT::i8)
+ return false;
+
+ unsigned Opc;
+ bool isZext = isa<ZExtInst>(I);
+ bool isBoolZext = false;
+ if (!SrcVT.isSimple())
+ return false;
+ switch (SrcVT.getSimpleVT().SimpleTy) {
+ default: return false;
+ case MVT::i16:
+ if (!Subtarget->hasV6Ops()) return false;
+ if (isZext)
+ Opc = isThumb ? ARM::t2UXTH : ARM::UXTH;
+ else
+ Opc = isThumb ? ARM::t2SXTH : ARM::SXTH;
+ break;
+ case MVT::i8:
+ if (!Subtarget->hasV6Ops()) return false;
+ if (isZext)
+ Opc = isThumb ? ARM::t2UXTB : ARM::UXTB;
+ else
+ Opc = isThumb ? ARM::t2SXTB : ARM::SXTB;
+ break;
+ case MVT::i1:
+ if (isZext) {
+ Opc = isThumb ? ARM::t2ANDri : ARM::ANDri;
+ isBoolZext = true;
+ break;
+ }
+ return false;
+ }
+
+ // FIXME: We could save an instruction in many cases by special-casing
+ // load instructions.
+ unsigned SrcReg = getRegForValue(Op);
+ if (!SrcReg) return false;
+
+ unsigned DestReg = createResultReg(TLI.getRegClassFor(MVT::i32));
+ MachineInstrBuilder MIB;
+ MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(Opc), DestReg)
+ .addReg(SrcReg);
+ if (isBoolZext)
+ MIB.addImm(1);
+ else
+ MIB.addImm(0);
+ AddOptionalDefs(MIB);
+ UpdateValueMap(I, DestReg);
+ return true;
+}
+
// TODO: SoftFP support.
bool ARMFastISel::TargetSelectInstruction(const Instruction *I) {
return SelectSelect(I);
case Instruction::Ret:
return SelectRet(I);
+ case Instruction::Trunc:
+ case Instruction::ZExt:
+ case Instruction::SExt:
+ return SelectIntCast(I);
default: break;
}
return false;