#include "llvm/Intrinsics.h"
#include "llvm/CallingConv.h"
#include "InstPrinter/MipsInstPrinter.h"
+#include "MCTargetDesc/MipsBaseInfo.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/Support/ErrorHandling.h"
using namespace llvm;
-// If I is a shifted mask, set the size (Size) and the first bit of the
+// If I is a shifted mask, set the size (Size) and the first bit of the
// mask (Pos), and return true.
-// For example, if I is 0x003ff800, (Pos, Size) = (11, 11).
+// For example, if I is 0x003ff800, (Pos, Size) = (11, 11).
static bool IsShiftedMask(uint64_t I, uint64_t &Pos, uint64_t &Size) {
- if (!isUInt<32>(I) || !isShiftedMask_32(I))
+ if (!isShiftedMask_64(I))
return false;
- Size = CountPopulation_32(I);
- Pos = CountTrailingZeros_32(I);
+ Size = CountPopulation_64(I);
+ Pos = CountTrailingZeros_64(I);
return true;
}
+static SDValue GetGlobalReg(SelectionDAG &DAG, EVT Ty) {
+ MipsFunctionInfo *FI = DAG.getMachineFunction().getInfo<MipsFunctionInfo>();
+ return DAG.getRegister(FI->getGlobalBaseReg(), Ty);
+}
+
const char *MipsTargetLowering::getTargetNodeName(unsigned Opcode) const {
switch (Opcode) {
case MipsISD::JmpLink: return "MipsISD::JmpLink";
case MipsISD::Hi: return "MipsISD::Hi";
case MipsISD::Lo: return "MipsISD::Lo";
case MipsISD::GPRel: return "MipsISD::GPRel";
- case MipsISD::TlsGd: return "MipsISD::TlsGd";
- case MipsISD::TprelHi: return "MipsISD::TprelHi";
- case MipsISD::TprelLo: return "MipsISD::TprelLo";
case MipsISD::ThreadPointer: return "MipsISD::ThreadPointer";
case MipsISD::Ret: return "MipsISD::Ret";
case MipsISD::FPBrcond: return "MipsISD::FPBrcond";
case MipsISD::DivRemU: return "MipsISD::DivRemU";
case MipsISD::BuildPairF64: return "MipsISD::BuildPairF64";
case MipsISD::ExtractElementF64: return "MipsISD::ExtractElementF64";
- case MipsISD::WrapperPIC: return "MipsISD::WrapperPIC";
+ case MipsISD::Wrapper: return "MipsISD::Wrapper";
case MipsISD::DynAlloc: return "MipsISD::DynAlloc";
case MipsISD::Sync: return "MipsISD::Sync";
case MipsISD::Ext: return "MipsISD::Ext";
// Set up the register classes
addRegisterClass(MVT::i32, Mips::CPURegsRegisterClass);
- addRegisterClass(MVT::f32, Mips::FGR32RegisterClass);
if (HasMips64)
addRegisterClass(MVT::i64, Mips::CPU64RegsRegisterClass);
- // When dealing with single precision only, use libcalls
- if (!Subtarget->isSingleFloat()) {
- if (HasMips64)
- addRegisterClass(MVT::f64, Mips::FGR64RegisterClass);
- else
- addRegisterClass(MVT::f64, Mips::AFGR64RegisterClass);
+ if (!TM.Options.UseSoftFloat) {
+ addRegisterClass(MVT::f32, Mips::FGR32RegisterClass);
+
+ // When dealing with single precision only, use libcalls
+ if (!Subtarget->isSingleFloat()) {
+ if (HasMips64)
+ addRegisterClass(MVT::f64, Mips::FGR64RegisterClass);
+ else
+ addRegisterClass(MVT::f64, Mips::AFGR64RegisterClass);
+ }
}
// Load extented operations for i1 types must be promoted
setOperationAction(ISD::GlobalAddress, MVT::i32, Custom);
setOperationAction(ISD::GlobalAddress, MVT::i64, Custom);
setOperationAction(ISD::BlockAddress, MVT::i32, Custom);
+ setOperationAction(ISD::BlockAddress, MVT::i64, Custom);
setOperationAction(ISD::GlobalTLSAddress, MVT::i32, Custom);
+ setOperationAction(ISD::GlobalTLSAddress, MVT::i64, Custom);
setOperationAction(ISD::JumpTable, MVT::i32, Custom);
+ setOperationAction(ISD::JumpTable, MVT::i64, Custom);
setOperationAction(ISD::ConstantPool, MVT::i32, Custom);
+ setOperationAction(ISD::ConstantPool, MVT::i64, Custom);
setOperationAction(ISD::SELECT, MVT::f32, Custom);
setOperationAction(ISD::SELECT, MVT::f64, Custom);
setOperationAction(ISD::SELECT, MVT::i32, Custom);
setOperationAction(ISD::BRCOND, MVT::Other, Custom);
setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i32, Custom);
+ setOperationAction(ISD::DYNAMIC_STACKALLOC, MVT::i64, Custom);
setOperationAction(ISD::VASTART, MVT::Other, Custom);
setOperationAction(ISD::SDIV, MVT::i32, Expand);
setOperationAction(ISD::BR_CC, MVT::Other, Expand);
setOperationAction(ISD::SELECT_CC, MVT::Other, Expand);
setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);
+ setOperationAction(ISD::UINT_TO_FP, MVT::i64, Expand);
setOperationAction(ISD::FP_TO_UINT, MVT::i32, Expand);
+ setOperationAction(ISD::FP_TO_UINT, MVT::i64, Expand);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i1, Expand);
setOperationAction(ISD::CTPOP, MVT::i32, Expand);
+ setOperationAction(ISD::CTPOP, MVT::i64, Expand);
setOperationAction(ISD::CTTZ, MVT::i32, Expand);
+ setOperationAction(ISD::CTTZ, MVT::i64, Expand);
+ setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i32, Expand);
+ setOperationAction(ISD::CTTZ_ZERO_UNDEF, MVT::i64, Expand);
+ setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i32, Expand);
+ setOperationAction(ISD::CTLZ_ZERO_UNDEF, MVT::i64, Expand);
setOperationAction(ISD::ROTL, MVT::i32, Expand);
setOperationAction(ISD::ROTL, MVT::i64, Expand);
setOperationAction(ISD::FMA, MVT::f64, Expand);
setOperationAction(ISD::EXCEPTIONADDR, MVT::i32, Expand);
+ setOperationAction(ISD::EXCEPTIONADDR, MVT::i64, Expand);
setOperationAction(ISD::EHSELECTION, MVT::i32, Expand);
+ setOperationAction(ISD::EHSELECTION, MVT::i64, Expand);
setOperationAction(ISD::VAARG, MVT::Other, Expand);
setOperationAction(ISD::VACOPY, MVT::Other, Expand);
setOperationAction(ISD::STACKRESTORE, MVT::Other, Expand);
setOperationAction(ISD::MEMBARRIER, MVT::Other, Custom);
- setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom);
+ setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom);
- setOperationAction(ISD::ATOMIC_LOAD, MVT::i32, Expand);
- setOperationAction(ISD::ATOMIC_STORE, MVT::i32, Expand);
+ setOperationAction(ISD::ATOMIC_LOAD, MVT::i32, Expand);
+ setOperationAction(ISD::ATOMIC_LOAD, MVT::i64, Expand);
+ setOperationAction(ISD::ATOMIC_STORE, MVT::i32, Expand);
+ setOperationAction(ISD::ATOMIC_STORE, MVT::i64, Expand);
setInsertFencesForAtomic(true);
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
}
- if (!Subtarget->hasBitCount())
+ if (!Subtarget->hasBitCount()) {
setOperationAction(ISD::CTLZ, MVT::i32, Expand);
+ setOperationAction(ISD::CTLZ, MVT::i64, Expand);
+ }
- if (!Subtarget->hasSwap())
+ if (!Subtarget->hasSwap()) {
setOperationAction(ISD::BSWAP, MVT::i32, Expand);
+ setOperationAction(ISD::BSWAP, MVT::i64, Expand);
+ }
setTargetDAGCombine(ISD::ADDE);
setTargetDAGCombine(ISD::SUBE);
setTargetDAGCombine(ISD::AND);
setTargetDAGCombine(ISD::OR);
- setMinFunctionAlignment(2);
+ setMinFunctionAlignment(HasMips64 ? 3 : 2);
- setStackPointerRegisterToSaveRestore(Mips::SP);
+ setStackPointerRegisterToSaveRestore(IsN64 ? Mips::SP_64 : Mips::SP);
computeRegisterProperties();
- setExceptionPointerRegister(Mips::A0);
- setExceptionSelectorRegister(Mips::A1);
+ setExceptionPointerRegister(IsN64 ? Mips::A0_64 : Mips::A0);
+ setExceptionSelectorRegister(IsN64 ? Mips::A1_64 : Mips::A1);
}
bool MipsTargetLowering::allowsUnalignedMemoryAccesses(EVT VT) const {
MVT::SimpleValueType SVT = VT.getSimpleVT().SimpleTy;
- return SVT == MVT::i64 || SVT == MVT::i32 || SVT == MVT::i16;
+
+ switch (SVT) {
+ case MVT::i64:
+ case MVT::i32:
+ case MVT::i16:
+ return true;
+ case MVT::f32:
+ return Subtarget->hasMips32r2Or64();
+ default:
+ return false;
+ }
}
EVT MipsTargetLowering::getSetCCResultType(EVT VT) const {
// create MipsMAdd(u) node
MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MAddu : MipsISD::MAdd;
- SDValue MAdd = CurDAG->getNode(MultOpc, dl,
- MVT::Glue,
+ SDValue MAdd = CurDAG->getNode(MultOpc, dl, MVT::Glue,
MultNode->getOperand(0),// Factor 0
MultNode->getOperand(1),// Factor 1
ADDCNode->getOperand(1),// Lo0
// create MipsSub(u) node
MultOpc = MultOpc == ISD::UMUL_LOHI ? MipsISD::MSubu : MipsISD::MSub;
- SDValue MSub = CurDAG->getNode(MultOpc, dl,
- MVT::Glue,
+ SDValue MSub = CurDAG->getNode(MultOpc, dl, MVT::Glue,
MultNode->getOperand(0),// Factor 0
MultNode->getOperand(1),// Factor 1
SUBCNode->getOperand(0),// Lo0
return SDValue();
EVT Ty = N->getValueType(0);
- unsigned LO = (Ty == MVT::i32) ? Mips::LO : Mips::LO64;
- unsigned HI = (Ty == MVT::i32) ? Mips::HI : Mips::HI64;
+ unsigned LO = (Ty == MVT::i32) ? Mips::LO : Mips::LO64;
+ unsigned HI = (Ty == MVT::i32) ? Mips::HI : Mips::HI64;
unsigned opc = N->getOpcode() == ISD::SDIVREM ? MipsISD::DivRem :
MipsISD::DivRemU;
DebugLoc dl = N->getDebugLoc();
if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT)
return false;
- if (CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT)
- return true;
+ assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) &&
+ "Illegal Condition Code");
- assert(false && "Illegal Condition Code");
- return false;
+ return true;
}
// Creates and returns an FPCmp node from a setcc node.
return CreateCMovFP(DAG, Cond, True, False, N->getDebugLoc());
}
+static SDValue PerformSELECTCombine(SDNode *N, SelectionDAG& DAG,
+ TargetLowering::DAGCombinerInfo &DCI,
+ const MipsSubtarget* Subtarget) {
+ if (DCI.isBeforeLegalizeOps())
+ return SDValue();
+
+ SDValue SetCC = N->getOperand(0);
+
+ if ((SetCC.getOpcode() != ISD::SETCC) ||
+ !SetCC.getOperand(0).getValueType().isInteger())
+ return SDValue();
+
+ SDValue False = N->getOperand(2);
+ EVT FalseTy = False.getValueType();
+
+ if (!FalseTy.isInteger())
+ return SDValue();
+
+ ConstantSDNode *CN = dyn_cast<ConstantSDNode>(False);
+
+ if (!CN || CN->getZExtValue())
+ return SDValue();
+
+ const DebugLoc DL = N->getDebugLoc();
+ ISD::CondCode CC = cast<CondCodeSDNode>(SetCC.getOperand(2))->get();
+ SDValue True = N->getOperand(1);
+
+ SetCC = DAG.getSetCC(DL, SetCC.getValueType(), SetCC.getOperand(0),
+ SetCC.getOperand(1), ISD::getSetCCInverse(CC, true));
+
+ return DAG.getNode(ISD::SELECT, DL, FalseTy, SetCC, False, True);
+}
+
static SDValue PerformANDCombine(SDNode *N, SelectionDAG& DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget* Subtarget) {
return SDValue();
SDValue ShiftRight = N->getOperand(0), Mask = N->getOperand(1);
-
+ unsigned ShiftRightOpc = ShiftRight.getOpcode();
+
// Op's first operand must be a shift right.
- if (ShiftRight.getOpcode() != ISD::SRA && ShiftRight.getOpcode() != ISD::SRL)
+ if (ShiftRightOpc != ISD::SRA && ShiftRightOpc != ISD::SRL)
return SDValue();
// The second operand of the shift must be an immediate.
- uint64_t Pos;
ConstantSDNode *CN;
if (!(CN = dyn_cast<ConstantSDNode>(ShiftRight.getOperand(1))))
return SDValue();
-
- Pos = CN->getZExtValue();
+ uint64_t Pos = CN->getZExtValue();
uint64_t SMPos, SMSize;
+
// Op's second operand must be a shifted mask.
if (!(CN = dyn_cast<ConstantSDNode>(Mask)) ||
!IsShiftedMask(CN->getZExtValue(), SMPos, SMSize))
// Return if the shifted mask does not start at bit 0 or the sum of its size
// and Pos exceeds the word's size.
- if (SMPos != 0 || Pos + SMSize > 32)
+ EVT ValTy = N->getValueType(0);
+ if (SMPos != 0 || Pos + SMSize > ValTy.getSizeInBits())
return SDValue();
- return DAG.getNode(MipsISD::Ext, N->getDebugLoc(), MVT::i32,
- ShiftRight.getOperand(0),
- DAG.getConstant(Pos, MVT::i32),
+ return DAG.getNode(MipsISD::Ext, N->getDebugLoc(), ValTy,
+ ShiftRight.getOperand(0), DAG.getConstant(Pos, MVT::i32),
DAG.getConstant(SMSize, MVT::i32));
}
-
+
static SDValue PerformORCombine(SDNode *N, SelectionDAG& DAG,
TargetLowering::DAGCombinerInfo &DCI,
const MipsSubtarget* Subtarget) {
// Pattern match INS.
// $dst = or (and $src1 , mask0), (and (shl $src, pos), mask1),
- // where mask1 = (2**size - 1) << pos, mask0 = ~mask1
+ // where mask1 = (2**size - 1) << pos, mask0 = ~mask1
// => ins $dst, $src, size, pos, $src1
if (DCI.isBeforeLegalizeOps() || !Subtarget->hasMips32r2())
return SDValue();
// See if Op's second operand matches (and (shl $src, pos), mask1).
if (And1.getOpcode() != ISD::AND)
return SDValue();
-
+
if (!(CN = dyn_cast<ConstantSDNode>(And1.getOperand(1))) ||
!IsShiftedMask(CN->getZExtValue(), SMPos1, SMSize1))
return SDValue();
unsigned Shamt = CN->getZExtValue();
// Return if the shift amount and the first bit position of mask are not the
- // same.
- if (Shamt != SMPos0)
+ // same.
+ EVT ValTy = N->getValueType(0);
+ if ((Shamt != SMPos0) || (SMPos0 + SMSize0 > ValTy.getSizeInBits()))
return SDValue();
-
- return DAG.getNode(MipsISD::Ins, N->getDebugLoc(), MVT::i32,
- Shl.getOperand(0),
+
+ return DAG.getNode(MipsISD::Ins, N->getDebugLoc(), ValTy, Shl.getOperand(0),
DAG.getConstant(SMPos0, MVT::i32),
- DAG.getConstant(SMSize0, MVT::i32),
- And0.getOperand(0));
+ DAG.getConstant(SMSize0, MVT::i32), And0.getOperand(0));
}
-
+
SDValue MipsTargetLowering::PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI)
const {
SelectionDAG &DAG = DCI.DAG;
return PerformDivRemCombine(N, DAG, DCI, Subtarget);
case ISD::SETCC:
return PerformSETCCCombine(N, DAG, DCI, Subtarget);
+ case ISD::SELECT:
+ return PerformSELECTCombine(N, DAG, DCI, Subtarget);
case ISD::AND:
return PerformANDCombine(N, DAG, DCI, Subtarget);
case ISD::OR:
// MachineFunction as a live in value. It also creates a corresponding
// virtual register for it.
static unsigned
-AddLiveIn(MachineFunction &MF, unsigned PReg, TargetRegisterClass *RC)
+AddLiveIn(MachineFunction &MF, unsigned PReg, const TargetRegisterClass *RC)
{
assert(RC->contains(PReg) && "Not the correct regclass!");
unsigned VReg = MF.getRegInfo().createVirtualRegister(RC);
if (CC >= Mips::FCOND_F && CC <= Mips::FCOND_NGT)
return Mips::BRANCH_T;
- if (CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT)
- return Mips::BRANCH_F;
+ assert((CC >= Mips::FCOND_T && CC <= Mips::FCOND_GT) &&
+ "Invalid CondCode.");
- return Mips::BRANCH_INVALID;
+ return Mips::BRANCH_F;
}
/*
MipsTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *BB) const {
switch (MI->getOpcode()) {
- default:
- assert(false && "Unexpected instr type to insert");
- return NULL;
+ default: llvm_unreachable("Unexpected instr type to insert");
case Mips::ATOMIC_LOAD_ADD_I8:
case Mips::ATOMIC_LOAD_ADD_I8_P8:
return EmitAtomicBinaryPartword(MI, BB, 1, Mips::ADDu);
return EmitAtomicBinary(MI, BB, 4, Mips::AND);
case Mips::ATOMIC_LOAD_AND_I64:
case Mips::ATOMIC_LOAD_AND_I64_P8:
- return EmitAtomicBinary(MI, BB, 48, Mips::AND64);
+ return EmitAtomicBinary(MI, BB, 8, Mips::AND64);
case Mips::ATOMIC_LOAD_OR_I8:
case Mips::ATOMIC_LOAD_OR_I8_P8:
// Transfer the remainder of BB and its successor edges to exitMBB.
exitMBB->splice(exitMBB->begin(), BB,
- llvm::next(MachineBasicBlock::iterator(MI)),
- BB->end());
+ llvm::next(MachineBasicBlock::iterator(MI)), BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
BB->addSuccessor(loopMBB);
BuildMI(BB, dl, TII->get(Mips::NOR), Mask2).addReg(Mips::ZERO).addReg(Mask);
BuildMI(BB, dl, TII->get(Mips::SLLV), Incr2).addReg(ShiftAmt).addReg(Incr);
-
// atomic.load.binop
// loopMBB:
// ll oldval,0(alignedaddr)
// and newval, incr2, mask
BuildMI(BB, dl, TII->get(Mips::AND), NewVal).addReg(Incr2).addReg(Mask);
}
-
+
BuildMI(BB, dl, TII->get(Mips::AND), MaskedOldVal0)
.addReg(OldVal).addReg(Mask2);
BuildMI(BB, dl, TII->get(Mips::OR), StoreVal)
// Transfer the remainder of BB and its successor edges to exitMBB.
exitMBB->splice(exitMBB->begin(), BB,
- llvm::next(MachineBasicBlock::iterator(MI)),
- BB->end());
+ llvm::next(MachineBasicBlock::iterator(MI)), BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
// thisMBB:
// Transfer the remainder of BB and its successor edges to exitMBB.
exitMBB->splice(exitMBB->begin(), BB,
- llvm::next(MachineBasicBlock::iterator(MI)),
- BB->end());
+ llvm::next(MachineBasicBlock::iterator(MI)), BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
BB->addSuccessor(loop1MBB);
SelectionDAG &DAG) const {
// FIXME there isn't actually debug info here
DebugLoc dl = Op.getDebugLoc();
- const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
+ const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) {
SDVTList VTs = DAG.getVTList(MVT::i32);
(GV->hasLocalLinkage() && !isa<Function>(GV)));
unsigned GotFlag = IsN64 ?
(HasGotOfst ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT_DISP) :
- MipsII::MO_GOT;
+ (HasGotOfst ? MipsII::MO_GOT : MipsII::MO_GOT16);
SDValue GA = DAG.getTargetGlobalAddress(GV, dl, ValTy, 0, GotFlag);
- GA = DAG.getNode(MipsISD::WrapperPIC, dl, ValTy, GA);
- SDValue ResNode = DAG.getLoad(ValTy, dl,
- DAG.getEntryNode(), GA, MachinePointerInfo(),
- false, false, false, 0);
+ GA = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), GA);
+ SDValue ResNode = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), GA,
+ MachinePointerInfo(), false, false, false, 0);
// On functions and global targets not internal linked only
// a load from got/GP is necessary for PIC to work.
if (!HasGotOfst)
// FIXME there isn't actually debug info here
DebugLoc dl = Op.getDebugLoc();
- if (getTargetMachine().getRelocationModel() != Reloc::PIC_) {
+ if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !IsN64) {
// %hi/%lo relocation
- SDValue BAHi = DAG.getBlockAddress(BA, MVT::i32, true,
- MipsII::MO_ABS_HI);
- SDValue BALo = DAG.getBlockAddress(BA, MVT::i32, true,
- MipsII::MO_ABS_LO);
+ SDValue BAHi = DAG.getBlockAddress(BA, MVT::i32, true, MipsII::MO_ABS_HI);
+ SDValue BALo = DAG.getBlockAddress(BA, MVT::i32, true, MipsII::MO_ABS_LO);
SDValue Hi = DAG.getNode(MipsISD::Hi, dl, MVT::i32, BAHi);
SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, BALo);
return DAG.getNode(ISD::ADD, dl, MVT::i32, Hi, Lo);
}
- SDValue BAGOTOffset = DAG.getBlockAddress(BA, MVT::i32, true,
- MipsII::MO_GOT);
- BAGOTOffset = DAG.getNode(MipsISD::WrapperPIC, dl, MVT::i32, BAGOTOffset);
- SDValue BALOOffset = DAG.getBlockAddress(BA, MVT::i32, true,
- MipsII::MO_ABS_LO);
- SDValue Load = DAG.getLoad(MVT::i32, dl,
- DAG.getEntryNode(), BAGOTOffset,
+ EVT ValTy = Op.getValueType();
+ unsigned GOTFlag = IsN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
+ unsigned OFSTFlag = IsN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
+ SDValue BAGOTOffset = DAG.getBlockAddress(BA, ValTy, true, GOTFlag);
+ BAGOTOffset = DAG.getNode(MipsISD::Wrapper, dl, ValTy,
+ GetGlobalReg(DAG, ValTy), BAGOTOffset);
+ SDValue BALOOffset = DAG.getBlockAddress(BA, ValTy, true, OFSTFlag);
+ SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), BAGOTOffset,
MachinePointerInfo(), false, false, false, 0);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, BALOOffset);
- return DAG.getNode(ISD::ADD, dl, MVT::i32, Load, Lo);
+ SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, BALOOffset);
+ return DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo);
}
SDValue MipsTargetLowering::
LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const
{
- // If the relocation model is PIC, use the General Dynamic TLS Model,
- // otherwise use the Initial Exec or Local Exec TLS Model.
- // TODO: implement Local Dynamic TLS model
+ // If the relocation model is PIC, use the General Dynamic TLS Model or
+ // Local Dynamic TLS model, otherwise use the Initial Exec or
+ // Local Exec TLS Model.
GlobalAddressSDNode *GA = cast<GlobalAddressSDNode>(Op);
DebugLoc dl = GA->getDebugLoc();
if (getTargetMachine().getRelocationModel() == Reloc::PIC_) {
// General Dynamic TLS Model
- SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32,
- 0, MipsII::MO_TLSGD);
- SDValue Tlsgd = DAG.getNode(MipsISD::TlsGd, dl, MVT::i32, TGA);
- SDValue GP = DAG.getRegister(Mips::GP, MVT::i32);
- SDValue Argument = DAG.getNode(ISD::ADD, dl, MVT::i32, GP, Tlsgd);
+ bool LocalDynamic = GV->hasInternalLinkage();
+ unsigned Flag = LocalDynamic ? MipsII::MO_TLSLDM :MipsII::MO_TLSGD;
+ SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, Flag);
+ SDValue Argument = DAG.getNode(MipsISD::Wrapper, dl, PtrVT,
+ GetGlobalReg(DAG, PtrVT), TGA);
+ unsigned PtrSize = PtrVT.getSizeInBits();
+ IntegerType *PtrTy = Type::getIntNTy(*DAG.getContext(), PtrSize);
+
+ SDValue TlsGetAddr = DAG.getExternalSymbol("__tls_get_addr", PtrVT);
ArgListTy Args;
ArgListEntry Entry;
Entry.Node = Argument;
- Entry.Ty = (Type *) Type::getInt32Ty(*DAG.getContext());
+ Entry.Ty = PtrTy;
Args.push_back(Entry);
- std::pair<SDValue, SDValue> CallResult =
- LowerCallTo(DAG.getEntryNode(),
- (Type *) Type::getInt32Ty(*DAG.getContext()),
- false, false, false, false, 0, CallingConv::C, false, true,
- DAG.getExternalSymbol("__tls_get_addr", PtrVT), Args, DAG,
- dl);
- return CallResult.first;
+ std::pair<SDValue, SDValue> CallResult =
+ LowerCallTo(DAG.getEntryNode(), PtrTy,
+ false, false, false, false, 0, CallingConv::C,
+ /*isTailCall=*/false, /*doesNotRet=*/false,
+ /*isReturnValueUsed=*/true,
+ TlsGetAddr, Args, DAG, dl);
+
+ SDValue Ret = CallResult.first;
+
+ if (!LocalDynamic)
+ return Ret;
+
+ SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
+ MipsII::MO_DTPREL_HI);
+ SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi);
+ SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
+ MipsII::MO_DTPREL_LO);
+ SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo);
+ SDValue Add = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Ret);
+ return DAG.getNode(ISD::ADD, dl, PtrVT, Add, Lo);
}
SDValue Offset;
if (GV->isDeclaration()) {
// Initial Exec TLS Model
- SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0,
+ SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
MipsII::MO_GOTTPREL);
- Offset = DAG.getLoad(MVT::i32, dl,
+ TGA = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT),
+ TGA);
+ Offset = DAG.getLoad(PtrVT, dl,
DAG.getEntryNode(), TGA, MachinePointerInfo(),
false, false, false, 0);
} else {
// Local Exec TLS Model
- SDVTList VTs = DAG.getVTList(MVT::i32);
- SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0,
+ SDValue TGAHi = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
MipsII::MO_TPREL_HI);
- SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, MVT::i32, 0,
+ SDValue TGALo = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
MipsII::MO_TPREL_LO);
- SDValue Hi = DAG.getNode(MipsISD::TprelHi, dl, VTs, &TGAHi, 1);
- SDValue Lo = DAG.getNode(MipsISD::TprelLo, dl, MVT::i32, TGALo);
- Offset = DAG.getNode(ISD::ADD, dl, MVT::i32, Hi, Lo);
+ SDValue Hi = DAG.getNode(MipsISD::Hi, dl, PtrVT, TGAHi);
+ SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, TGALo);
+ Offset = DAG.getNode(ISD::ADD, dl, PtrVT, Hi, Lo);
}
SDValue ThreadPointer = DAG.getNode(MipsISD::ThreadPointer, dl, PtrVT);
SDValue MipsTargetLowering::
LowerJumpTable(SDValue Op, SelectionDAG &DAG) const
{
- SDValue ResNode;
- SDValue HiPart;
+ SDValue HiPart, JTI, JTILo;
// FIXME there isn't actually debug info here
DebugLoc dl = Op.getDebugLoc();
bool IsPIC = getTargetMachine().getRelocationModel() == Reloc::PIC_;
- unsigned char OpFlag = IsPIC ? MipsII::MO_GOT : MipsII::MO_ABS_HI;
-
EVT PtrVT = Op.getValueType();
- JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
-
- SDValue JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, OpFlag);
+ JumpTableSDNode *JT = cast<JumpTableSDNode>(Op);
- if (!IsPIC) {
- SDValue Ops[] = { JTI };
- HiPart = DAG.getNode(MipsISD::Hi, dl, DAG.getVTList(MVT::i32), Ops, 1);
+ if (!IsPIC && !IsN64) {
+ JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_HI);
+ HiPart = DAG.getNode(MipsISD::Hi, dl, PtrVT, JTI);
+ JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, MipsII::MO_ABS_LO);
} else {// Emit Load from Global Pointer
- JTI = DAG.getNode(MipsISD::WrapperPIC, dl, MVT::i32, JTI);
- HiPart = DAG.getLoad(MVT::i32, dl, DAG.getEntryNode(), JTI,
- MachinePointerInfo(),
- false, false, false, 0);
+ unsigned GOTFlag = IsN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
+ unsigned OfstFlag = IsN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
+ JTI = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, GOTFlag);
+ JTI = DAG.getNode(MipsISD::Wrapper, dl, PtrVT, GetGlobalReg(DAG, PtrVT),
+ JTI);
+ HiPart = DAG.getLoad(PtrVT, dl, DAG.getEntryNode(), JTI,
+ MachinePointerInfo(), false, false, false, 0);
+ JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT, OfstFlag);
}
- SDValue JTILo = DAG.getTargetJumpTable(JT->getIndex(), PtrVT,
- MipsII::MO_ABS_LO);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, JTILo);
- ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo);
-
- return ResNode;
+ SDValue Lo = DAG.getNode(MipsISD::Lo, dl, PtrVT, JTILo);
+ return DAG.getNode(ISD::ADD, dl, PtrVT, HiPart, Lo);
}
SDValue MipsTargetLowering::
SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CPLo);
ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, HiPart, Lo);
} else {
- SDValue CP = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
- N->getOffset(), MipsII::MO_GOT);
- CP = DAG.getNode(MipsISD::WrapperPIC, dl, MVT::i32, CP);
- SDValue Load = DAG.getLoad(MVT::i32, dl, DAG.getEntryNode(),
- CP, MachinePointerInfo::getConstantPool(),
- false, false, false, 0);
- SDValue CPLo = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
- N->getOffset(), MipsII::MO_ABS_LO);
- SDValue Lo = DAG.getNode(MipsISD::Lo, dl, MVT::i32, CPLo);
- ResNode = DAG.getNode(ISD::ADD, dl, MVT::i32, Load, Lo);
+ EVT ValTy = Op.getValueType();
+ unsigned GOTFlag = IsN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
+ unsigned OFSTFlag = IsN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
+ SDValue CP = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(),
+ N->getOffset(), GOTFlag);
+ CP = DAG.getNode(MipsISD::Wrapper, dl, ValTy, GetGlobalReg(DAG, ValTy), CP);
+ SDValue Load = DAG.getLoad(ValTy, dl, DAG.getEntryNode(), CP,
+ MachinePointerInfo::getConstantPool(), false,
+ false, false, 0);
+ SDValue CPLo = DAG.getTargetConstantPool(C, ValTy, N->getAlignment(),
+ N->getOffset(), OFSTFlag);
+ SDValue Lo = DAG.getNode(MipsISD::Lo, dl, ValTy, CPLo);
+ ResNode = DAG.getNode(ISD::ADD, dl, ValTy, Load, Lo);
}
return ResNode;
// memory location argument.
const Value *SV = cast<SrcValueSDNode>(Op.getOperand(2))->getValue();
return DAG.getStore(Op.getOperand(0), dl, FI, Op.getOperand(1),
- MachinePointerInfo(SV),
- false, false, 0);
+ MachinePointerInfo(SV), false, false, 0);
}
-static SDValue LowerFCOPYSIGN32(SDValue Op, SelectionDAG &DAG) {
+// Called if the size of integer registers is large enough to hold the whole
+// floating point number.
+static SDValue LowerFCOPYSIGNLargeIntReg(SDValue Op, SelectionDAG &DAG) {
// FIXME: Use ext/ins instructions if target architecture is Mips32r2.
+ EVT ValTy = Op.getValueType();
+ EVT IntValTy = MVT::getIntegerVT(ValTy.getSizeInBits());
+ uint64_t Mask = (uint64_t)1 << (ValTy.getSizeInBits() - 1);
DebugLoc dl = Op.getDebugLoc();
- SDValue Op0 = DAG.getNode(ISD::BITCAST, dl, MVT::i32, Op.getOperand(0));
- SDValue Op1 = DAG.getNode(ISD::BITCAST, dl, MVT::i32, Op.getOperand(1));
- SDValue And0 = DAG.getNode(ISD::AND, dl, MVT::i32, Op0,
- DAG.getConstant(0x7fffffff, MVT::i32));
- SDValue And1 = DAG.getNode(ISD::AND, dl, MVT::i32, Op1,
- DAG.getConstant(0x80000000, MVT::i32));
- SDValue Result = DAG.getNode(ISD::OR, dl, MVT::i32, And0, And1);
- return DAG.getNode(ISD::BITCAST, dl, MVT::f32, Result);
+ SDValue Op0 = DAG.getNode(ISD::BITCAST, dl, IntValTy, Op.getOperand(0));
+ SDValue Op1 = DAG.getNode(ISD::BITCAST, dl, IntValTy, Op.getOperand(1));
+ SDValue And0 = DAG.getNode(ISD::AND, dl, IntValTy, Op0,
+ DAG.getConstant(Mask - 1, IntValTy));
+ SDValue And1 = DAG.getNode(ISD::AND, dl, IntValTy, Op1,
+ DAG.getConstant(Mask, IntValTy));
+ SDValue Result = DAG.getNode(ISD::OR, dl, IntValTy, And0, And1);
+ return DAG.getNode(ISD::BITCAST, dl, ValTy, Result);
}
-static SDValue LowerFCOPYSIGN64(SDValue Op, SelectionDAG &DAG, bool isLittle) {
+// Called if the size of integer registers is not large enough to hold the whole
+// floating point number (e.g. f64 & 32-bit integer register).
+static SDValue
+LowerFCOPYSIGNSmallIntReg(SDValue Op, SelectionDAG &DAG, bool isLittle) {
// FIXME:
// Use ext/ins instructions if target architecture is Mips32r2.
// Eliminate redundant mfc1 and mtc1 instructions.
return DAG.getNode(MipsISD::BuildPairF64, dl, MVT::f64, Word0, Word1);
}
-SDValue MipsTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG)
- const {
+SDValue
+MipsTargetLowering::LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const {
EVT Ty = Op.getValueType();
assert(Ty == MVT::f32 || Ty == MVT::f64);
- if (Ty == MVT::f32)
- return LowerFCOPYSIGN32(Op, DAG);
- else
- return LowerFCOPYSIGN64(Op, DAG, Subtarget->isLittle());
+ if (Ty == MVT::f32 || HasMips64)
+ return LowerFCOPYSIGNLargeIntReg(Op, DAG);
+
+ return LowerFCOPYSIGNSmallIntReg(Op, DAG, Subtarget->isLittle());
}
SDValue MipsTargetLowering::
}
// TODO: set SType according to the desired memory barrier behavior.
-SDValue MipsTargetLowering::LowerMEMBARRIER(SDValue Op,
- SelectionDAG& DAG) const {
+SDValue
+MipsTargetLowering::LowerMEMBARRIER(SDValue Op, SelectionDAG& DAG) const {
unsigned SType = 0;
DebugLoc dl = Op.getDebugLoc();
return DAG.getNode(MipsISD::Sync, dl, MVT::Other, Op.getOperand(0),
// Calling Convention Implementation
//===----------------------------------------------------------------------===//
-#include "MipsGenCallingConv.inc"
-
//===----------------------------------------------------------------------===//
// TODO: Implement a generic logic using tblgen that can support this.
// Mips O32 ABI rules:
return false; // CC must always match
}
+static const unsigned Mips64IntRegs[8] =
+ {Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64,
+ Mips::T0_64, Mips::T1_64, Mips::T2_64, Mips::T3_64};
+static const unsigned Mips64DPRegs[8] =
+ {Mips::D12_64, Mips::D13_64, Mips::D14_64, Mips::D15_64,
+ Mips::D16_64, Mips::D17_64, Mips::D18_64, Mips::D19_64};
+
+static bool CC_Mips64Byval(unsigned ValNo, MVT ValVT, MVT LocVT,
+ CCValAssign::LocInfo LocInfo,
+ ISD::ArgFlagsTy ArgFlags, CCState &State) {
+ unsigned Align = std::max(ArgFlags.getByValAlign(), (unsigned)8);
+ unsigned Size = (ArgFlags.getByValSize() + 7) / 8 * 8;
+ unsigned FirstIdx = State.getFirstUnallocated(Mips64IntRegs, 8);
+
+ assert(Align <= 16 && "Cannot handle alignments larger than 16.");
+
+ // If byval is 16-byte aligned, the first arg register must be even.
+ if ((Align == 16) && (FirstIdx % 2)) {
+ State.AllocateReg(Mips64IntRegs[FirstIdx], Mips64DPRegs[FirstIdx]);
+ ++FirstIdx;
+ }
+
+ // Mark the registers allocated.
+ for (unsigned I = FirstIdx; Size && (I < 8); Size -= 8, ++I)
+ State.AllocateReg(Mips64IntRegs[I], Mips64DPRegs[I]);
+
+ // Allocate space on caller's stack.
+ unsigned Offset = State.AllocateStack(Size, Align);
+
+ if (FirstIdx < 8)
+ State.addLoc(CCValAssign::getReg(ValNo, ValVT, Mips64IntRegs[FirstIdx],
+ LocVT, LocInfo));
+ else
+ State.addLoc(CCValAssign::getMem(ValNo, ValVT, Offset, LocVT, LocInfo));
+
+ return true;
+}
+
+#include "MipsGenCallingConv.inc"
+
+static void
+AnalyzeMips64CallOperands(CCState &CCInfo,
+ const SmallVectorImpl<ISD::OutputArg> &Outs) {
+ unsigned NumOps = Outs.size();
+ for (unsigned i = 0; i != NumOps; ++i) {
+ MVT ArgVT = Outs[i].VT;
+ ISD::ArgFlagsTy ArgFlags = Outs[i].Flags;
+ bool R;
+
+ if (Outs[i].IsFixed)
+ R = CC_MipsN(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo);
+ else
+ R = CC_MipsN_VarArg(i, ArgVT, ArgVT, CCValAssign::Full, ArgFlags, CCInfo);
+
+ if (R) {
+#ifndef NDEBUG
+ dbgs() << "Call operand #" << i << " has unhandled type "
+ << EVT(ArgVT).getEVTString();
+#endif
+ llvm_unreachable(0);
+ }
+ }
+}
+
//===----------------------------------------------------------------------===//
// Call Calling Convention Implementation
//===----------------------------------------------------------------------===//
SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg,
DAG.getConstant(Offset, MVT::i32));
SDValue LoadVal = DAG.getLoad(MVT::i32, dl, Chain, LoadPtr,
- MachinePointerInfo(),
- false, false, false, std::min(ByValAlign,
- (unsigned )4));
+ MachinePointerInfo(), false, false, false,
+ std::min(ByValAlign, (unsigned )4));
MemOpChains.push_back(LoadVal.getValue(1));
unsigned DstReg = O32IntRegs[LocMemOffset / 4];
RegsToPass.push_back(std::make_pair(DstReg, LoadVal));
// Read second subword if necessary.
if (RemainingSize != 0) {
assert(RemainingSize == 1 && "There must be one byte remaining.");
- LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg,
+ LoadPtr = DAG.getNode(ISD::ADD, dl, MVT::i32, Arg,
DAG.getConstant(Offset, MVT::i32));
unsigned Alignment = std::min(ByValAlign, (unsigned )2);
SDValue Subword = DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i32, Chain,
MachinePointerInfo(0), MachinePointerInfo(0));
}
+// Copy Mips64 byVal arg to registers and stack.
+void static
+PassByValArg64(SDValue& ByValChain, SDValue Chain, DebugLoc dl,
+ SmallVector<std::pair<unsigned, SDValue>, 16>& RegsToPass,
+ SmallVector<SDValue, 8>& MemOpChains, int& LastFI,
+ MachineFrameInfo *MFI, SelectionDAG &DAG, SDValue Arg,
+ const CCValAssign &VA, const ISD::ArgFlagsTy& Flags,
+ EVT PtrTy, bool isLittle) {
+ unsigned ByValSize = Flags.getByValSize();
+ unsigned Alignment = std::min(Flags.getByValAlign(), (unsigned)8);
+ bool IsRegLoc = VA.isRegLoc();
+ unsigned Offset = 0; // Offset in # of bytes from the beginning of struct.
+ unsigned LocMemOffset = 0;
+ unsigned MemCpySize = ByValSize;
+
+ if (!IsRegLoc)
+ LocMemOffset = VA.getLocMemOffset();
+ else {
+ const unsigned *Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8,
+ VA.getLocReg());
+ const unsigned *RegEnd = Mips64IntRegs + 8;
+
+ // Copy double words to registers.
+ for (; (Reg != RegEnd) && (ByValSize >= Offset + 8); ++Reg, Offset += 8) {
+ SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg,
+ DAG.getConstant(Offset, PtrTy));
+ SDValue LoadVal = DAG.getLoad(MVT::i64, dl, Chain, LoadPtr,
+ MachinePointerInfo(), false, false, false,
+ Alignment);
+ MemOpChains.push_back(LoadVal.getValue(1));
+ RegsToPass.push_back(std::make_pair(*Reg, LoadVal));
+ }
+
+ // Return if the struct has been fully copied.
+ if (!(MemCpySize = ByValSize - Offset))
+ return;
+
+ // If there is an argument register available, copy the remainder of the
+ // byval argument with sub-doubleword loads and shifts.
+ if (Reg != RegEnd) {
+ assert((ByValSize < Offset + 8) &&
+ "Size of the remainder should be smaller than 8-byte.");
+ SDValue Val;
+ for (unsigned LoadSize = 4; Offset < ByValSize; LoadSize /= 2) {
+ unsigned RemSize = ByValSize - Offset;
+
+ if (RemSize < LoadSize)
+ continue;
+
+ SDValue LoadPtr = DAG.getNode(ISD::ADD, dl, PtrTy, Arg,
+ DAG.getConstant(Offset, PtrTy));
+ SDValue LoadVal =
+ DAG.getExtLoad(ISD::ZEXTLOAD, dl, MVT::i64, Chain, LoadPtr,
+ MachinePointerInfo(), MVT::getIntegerVT(LoadSize * 8),
+ false, false, Alignment);
+ MemOpChains.push_back(LoadVal.getValue(1));
+
+ // Offset in number of bits from double word boundary.
+ unsigned OffsetDW = (Offset % 8) * 8;
+ unsigned Shamt = isLittle ? OffsetDW : 64 - (OffsetDW + LoadSize * 8);
+ SDValue Shift = DAG.getNode(ISD::SHL, dl, MVT::i64, LoadVal,
+ DAG.getConstant(Shamt, MVT::i32));
+
+ Val = Val.getNode() ? DAG.getNode(ISD::OR, dl, MVT::i64, Val, Shift) :
+ Shift;
+ Offset += LoadSize;
+ Alignment = std::min(Alignment, LoadSize);
+ }
+
+ RegsToPass.push_back(std::make_pair(*Reg, Val));
+ return;
+ }
+ }
+
+ assert(MemCpySize && "MemCpySize must not be zero.");
+
+ // Create a fixed object on stack at offset LocMemOffset and copy
+ // remainder of byval arg to it with memcpy.
+ SDValue Src = DAG.getNode(ISD::ADD, dl, PtrTy, Arg,
+ DAG.getConstant(Offset, PtrTy));
+ LastFI = MFI->CreateFixedObject(MemCpySize, LocMemOffset, true);
+ SDValue Dst = DAG.getFrameIndex(LastFI, PtrTy);
+ ByValChain = DAG.getMemcpy(ByValChain, dl, Dst, Src,
+ DAG.getConstant(MemCpySize, PtrTy), Alignment,
+ /*isVolatile=*/false, /*AlwaysInline=*/false,
+ MachinePointerInfo(0), MachinePointerInfo(0));
+}
+
/// LowerCall - functions arguments are copied from virtual regs to
/// (physical regs)/(stack frame), CALLSEQ_START and CALLSEQ_END are emitted.
/// TODO: isTailCall.
SDValue
MipsTargetLowering::LowerCall(SDValue InChain, SDValue Callee,
CallingConv::ID CallConv, bool isVarArg,
- bool &isTailCall,
+ bool doesNotRet, bool &isTailCall,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
const SmallVectorImpl<ISD::InputArg> &Ins,
// Analyze operands of the call, assigning locations to each operand.
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
- getTargetMachine(), ArgLocs, *DAG.getContext());
+ getTargetMachine(), ArgLocs, *DAG.getContext());
if (IsO32)
CCInfo.AnalyzeCallOperands(Outs, CC_MipsO32);
+ else if (HasMips64)
+ AnalyzeMips64CallOperands(CCInfo, Outs);
else
CCInfo.AnalyzeCallOperands(Outs, CC_Mips);
// If this is the first call, create a stack frame object that points to
// a location to which .cprestore saves $gp.
- if (IsO32 && IsPIC && !MipsFI->getGPFI())
+ if (IsO32 && IsPIC && MipsFI->globalBaseRegFixed() && !MipsFI->getGPFI())
MipsFI->setGPFI(MFI->CreateFixedObject(4, 0, true));
// Get the frame index of the stack frame object that points to the location
SDValue Arg = OutVals[i];
CCValAssign &VA = ArgLocs[i];
MVT ValVT = VA.getValVT(), LocVT = VA.getLocVT();
-
+ ISD::ArgFlagsTy Flags = Outs[i].Flags;
+
+ // ByVal Arg.
+ if (Flags.isByVal()) {
+ assert(Flags.getByValSize() &&
+ "ByVal args of size 0 should have been ignored by front-end.");
+ if (IsO32)
+ WriteByValArg(ByValChain, Chain, dl, RegsToPass, MemOpChains, LastFI,
+ MFI, DAG, Arg, VA, Flags, getPointerTy(),
+ Subtarget->isLittle());
+ else
+ PassByValArg64(ByValChain, Chain, dl, RegsToPass, MemOpChains, LastFI,
+ MFI, DAG, Arg, VA, Flags, getPointerTy(),
+ Subtarget->isLittle());
+ continue;
+ }
+
// Promote the value if needed.
switch (VA.getLocInfo()) {
default: llvm_unreachable("Unknown loc info!");
Arg, DAG.getConstant(1, MVT::i32));
if (!Subtarget->isLittle())
std::swap(Lo, Hi);
- unsigned LocRegLo = VA.getLocReg();
+ unsigned LocRegLo = VA.getLocReg();
unsigned LocRegHigh = getNextIntArgReg(LocRegLo);
RegsToPass.push_back(std::make_pair(LocRegLo, Lo));
RegsToPass.push_back(std::make_pair(LocRegHigh, Hi));
// Register can't get to this point...
assert(VA.isMemLoc());
- // ByVal Arg.
- ISD::ArgFlagsTy Flags = Outs[i].Flags;
- if (Flags.isByVal()) {
- assert(IsO32 &&
- "No support for ByVal args by ABIs other than O32 yet.");
- assert(Flags.getByValSize() &&
- "ByVal args of size 0 should have been ignored by front-end.");
- WriteByValArg(ByValChain, Chain, dl, RegsToPass, MemOpChains, LastFI, MFI,
- DAG, Arg, VA, Flags, getPointerTy(), Subtarget->isLittle());
- continue;
- }
-
// Create the frame index object for this incoming parameter
LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8,
VA.getLocMemOffset(), true);
// emit ISD::STORE whichs stores the
// parameter value to a stack Location
MemOpChains.push_back(DAG.getStore(Chain, dl, Arg, PtrOff,
- MachinePointerInfo(),
- false, false, 0));
+ MachinePointerInfo(), false, false, 0));
}
// Extend range of indices of frame objects for outgoing arguments that were
// node so that legalize doesn't hack it.
unsigned char OpFlag;
bool IsPICCall = (IsN64 || IsPIC); // true if calls are translated to jalr $25
- bool LoadSymAddr = false;
+ bool GlobalOrExternal = false;
SDValue CalleeLo;
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
getPointerTy(), 0, OpFlag);
}
- LoadSymAddr = true;
+ GlobalOrExternal = true;
}
else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) {
if (IsN64 || (!IsO32 && IsPIC))
OpFlag = MipsII::MO_NO_FLAG;
else // O32 & PIC
OpFlag = MipsII::MO_GOT_CALL;
- Callee = DAG.getTargetExternalSymbol(S->getSymbol(),
- getPointerTy(), OpFlag);
- LoadSymAddr = true;
+ Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(),
+ OpFlag);
+ GlobalOrExternal = true;
}
SDValue InFlag;
// Create nodes that load address of callee and copy it to T9
if (IsPICCall) {
- if (LoadSymAddr) {
+ if (GlobalOrExternal) {
// Load callee address
- Callee = DAG.getNode(MipsISD::WrapperPIC, dl, getPointerTy(), Callee);
+ Callee = DAG.getNode(MipsISD::Wrapper, dl, getPointerTy(),
+ GetGlobalReg(DAG, getPointerTy()), Callee);
SDValue LoadValue = DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(),
Callee, MachinePointerInfo::getGOT(),
false, false, false, 0);
} else
Callee = LoadValue;
}
+ }
+ // T9 should contain the address of the callee function if
+ // -reloction-model=pic or it is an indirect call.
+ if (IsPICCall || !GlobalOrExternal) {
// copy to T9
unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9;
Chain = DAG.getCopyToReg(Chain, dl, T9Reg, Callee, SDValue(0, 0));
Ops.push_back(DAG.getRegister(RegsToPass[i].first,
RegsToPass[i].second.getValueType()));
+ // Add a register mask operand representing the call-preserved registers.
+ const TargetRegisterInfo *TRI = getTargetMachine().getRegisterInfo();
+ const uint32_t *Mask = TRI->getCallPreservedMask(CallConv);
+ assert(Mask && "Missing call preserved mask for calling convention");
+ Ops.push_back(DAG.getRegisterMask(Mask));
+
if (InFlag.getNode())
Ops.push_back(InFlag);
}
}
+// Create frame object on stack and copy registers used for byval passing to it.
+static unsigned
+CopyMips64ByValRegs(MachineFunction &MF, SDValue Chain, DebugLoc dl,
+ std::vector<SDValue>& OutChains, SelectionDAG &DAG,
+ const CCValAssign &VA, const ISD::ArgFlagsTy& Flags,
+ MachineFrameInfo *MFI, bool IsRegLoc,
+ SmallVectorImpl<SDValue> &InVals, MipsFunctionInfo *MipsFI,
+ EVT PtrTy) {
+ const unsigned *Reg = Mips64IntRegs + 8;
+ int FOOffset; // Frame object offset from virtual frame pointer.
+
+ if (IsRegLoc) {
+ Reg = std::find(Mips64IntRegs, Mips64IntRegs + 8, VA.getLocReg());
+ FOOffset = (Reg - Mips64IntRegs) * 8 - 8 * 8;
+ }
+ else
+ FOOffset = VA.getLocMemOffset();
+
+ // Create frame object.
+ unsigned NumRegs = (Flags.getByValSize() + 7) / 8;
+ unsigned LastFI = MFI->CreateFixedObject(NumRegs * 8, FOOffset, true);
+ SDValue FIN = DAG.getFrameIndex(LastFI, PtrTy);
+ InVals.push_back(FIN);
+
+ // Copy arg registers.
+ for (unsigned I = 0; (Reg != Mips64IntRegs + 8) && (I < NumRegs);
+ ++Reg, ++I) {
+ unsigned VReg = AddLiveIn(MF, *Reg, Mips::CPU64RegsRegisterClass);
+ SDValue StorePtr = DAG.getNode(ISD::ADD, dl, PtrTy, FIN,
+ DAG.getConstant(I * 8, PtrTy));
+ SDValue Store = DAG.getStore(Chain, dl, DAG.getRegister(VReg, MVT::i64),
+ StorePtr, MachinePointerInfo(), false,
+ false, 0);
+ OutChains.push_back(Store);
+ }
+
+ return LastFI;
+}
+
/// LowerFormalArguments - transform physical registers into virtual registers
/// and generate load operations for arguments places on the stack.
SDValue
MipsTargetLowering::LowerFormalArguments(SDValue Chain,
CallingConv::ID CallConv,
bool isVarArg,
- const SmallVectorImpl<ISD::InputArg>
- &Ins,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals)
const {
// Assign locations to all of the incoming arguments.
SmallVector<CCValAssign, 16> ArgLocs;
CCState CCInfo(CallConv, isVarArg, DAG.getMachineFunction(),
- getTargetMachine(), ArgLocs, *DAG.getContext());
+ getTargetMachine(), ArgLocs, *DAG.getContext());
if (IsO32)
CCInfo.AnalyzeFormalArguments(Ins, CC_MipsO32);
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
CCValAssign &VA = ArgLocs[i];
EVT ValVT = VA.getValVT();
+ ISD::ArgFlagsTy Flags = Ins[i].Flags;
+ bool IsRegLoc = VA.isRegLoc();
+
+ if (Flags.isByVal()) {
+ assert(Flags.getByValSize() &&
+ "ByVal args of size 0 should have been ignored by front-end.");
+ if (IsO32) {
+ unsigned NumWords = (Flags.getByValSize() + 3) / 4;
+ LastFI = MFI->CreateFixedObject(NumWords * 4, VA.getLocMemOffset(),
+ true);
+ SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy());
+ InVals.push_back(FIN);
+ ReadByValArg(MF, Chain, dl, OutChains, DAG, NumWords, FIN, VA, Flags);
+ } else // N32/64
+ LastFI = CopyMips64ByValRegs(MF, Chain, dl, OutChains, DAG, VA, Flags,
+ MFI, IsRegLoc, InVals, MipsFI,
+ getPointerTy());
+ continue;
+ }
// Arguments stored on registers
- if (VA.isRegLoc()) {
+ if (IsRegLoc) {
EVT RegVT = VA.getLocVT();
unsigned ArgReg = VA.getLocReg();
- TargetRegisterClass *RC = 0;
+ const TargetRegisterClass *RC;
if (RegVT == MVT::i32)
RC = Mips::CPURegsRegisterClass;
// sanity check
assert(VA.isMemLoc());
- ISD::ArgFlagsTy Flags = Ins[i].Flags;
-
- if (Flags.isByVal()) {
- assert(IsO32 &&
- "No support for ByVal args by ABIs other than O32 yet.");
- assert(Flags.getByValSize() &&
- "ByVal args of size 0 should have been ignored by front-end.");
- unsigned NumWords = (Flags.getByValSize() + 3) / 4;
- LastFI = MFI->CreateFixedObject(NumWords * 4, VA.getLocMemOffset(),
- true);
- SDValue FIN = DAG.getFrameIndex(LastFI, getPointerTy());
- InVals.push_back(FIN);
- ReadByValArg(MF, Chain, dl, OutChains, DAG, NumWords, FIN, VA, Flags);
-
- continue;
- }
-
// The stack pointer offset is relative to the caller stack frame.
LastFI = MFI->CreateFixedObject(ValVT.getSizeInBits()/8,
VA.getLocMemOffset(), true);
Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Copy, Chain);
}
- if (isVarArg && IsO32) {
+ if (isVarArg) {
+ unsigned NumOfRegs = IsO32 ? 4 : 8;
+ const unsigned *ArgRegs = IsO32 ? O32IntRegs : Mips64IntRegs;
+ unsigned Idx = CCInfo.getFirstUnallocated(ArgRegs, NumOfRegs);
+ int FirstRegSlotOffset = IsO32 ? 0 : -64 ; // offset of $a0's slot.
+ const TargetRegisterClass *RC
+ = IsO32 ? Mips::CPURegsRegisterClass : Mips::CPU64RegsRegisterClass;
+ unsigned RegSize = RC->getSize();
+ int RegSlotOffset = FirstRegSlotOffset + Idx * RegSize;
+
+ // Offset of the first variable argument from stack pointer.
+ int FirstVaArgOffset;
+
+ if (IsO32 || (Idx == NumOfRegs)) {
+ FirstVaArgOffset =
+ (CCInfo.getNextStackOffset() + RegSize - 1) / RegSize * RegSize;
+ } else
+ FirstVaArgOffset = RegSlotOffset;
+
// Record the frame index of the first variable argument
// which is a value necessary to VASTART.
- unsigned NextStackOffset = CCInfo.getNextStackOffset();
- assert(NextStackOffset % 4 == 0 &&
- "NextStackOffset must be aligned to 4-byte boundaries.");
- LastFI = MFI->CreateFixedObject(4, NextStackOffset, true);
+ LastFI = MFI->CreateFixedObject(RegSize, FirstVaArgOffset, true);
MipsFI->setVarArgsFrameIndex(LastFI);
- // If NextStackOffset is smaller than o32's 16-byte reserved argument area,
- // copy the integer registers that have not been used for argument passing
- // to the caller's stack frame.
- for (; NextStackOffset < 16; NextStackOffset += 4) {
- TargetRegisterClass *RC = Mips::CPURegsRegisterClass;
- unsigned Idx = NextStackOffset / 4;
- unsigned Reg = AddLiveIn(DAG.getMachineFunction(), O32IntRegs[Idx], RC);
- SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg, MVT::i32);
- LastFI = MFI->CreateFixedObject(4, NextStackOffset, true);
+ // Copy the integer registers that have not been used for argument passing
+ // to the argument register save area. For O32, the save area is allocated
+ // in the caller's stack frame, while for N32/64, it is allocated in the
+ // callee's stack frame.
+ for (int StackOffset = RegSlotOffset;
+ Idx < NumOfRegs; ++Idx, StackOffset += RegSize) {
+ unsigned Reg = AddLiveIn(DAG.getMachineFunction(), ArgRegs[Idx], RC);
+ SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, Reg,
+ MVT::getIntegerVT(RegSize * 8));
+ LastFI = MFI->CreateFixedObject(RegSize, StackOffset, true);
SDValue PtrOff = DAG.getFrameIndex(LastFI, getPointerTy());
OutChains.push_back(DAG.getStore(Chain, dl, ArgValue, PtrOff,
- MachinePointerInfo(),
- false, false, 0));
+ MachinePointerInfo(), false, false, 0));
}
}
CCValAssign &VA = RVLocs[i];
assert(VA.isRegLoc() && "Can only return in registers!");
- Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(),
- OutVals[i], Flag);
+ Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(), OutVals[i], Flag);
// guarantee that all emitted copies are
// stuck together, avoiding something bad
case 'y':
case 'f':
return C_RegisterClass;
- break;
}
}
return TargetLowering::getConstraintType(Constraint);
case 'd': // Address register. Same as 'r' unless generating MIPS16 code.
case 'y': // Same as 'r'. Exists for compatibility.
case 'r':
- return std::make_pair(0U, Mips::CPURegsRegisterClass);
+ if (VT == MVT::i32)
+ return std::make_pair(0U, Mips::CPURegsRegisterClass);
+ assert(VT == MVT::i64 && "Unexpected type.");
+ return std::make_pair(0U, Mips::CPU64RegsRegisterClass);
case 'f':
if (VT == MVT::f32)
return std::make_pair(0U, Mips::FGR32RegisterClass);
- if (VT == MVT::f64)
- if ((!Subtarget->isSingleFloat()) && (!Subtarget->isFP64bit()))
+ if ((VT == MVT::f64) && (!Subtarget->isSingleFloat())) {
+ if (Subtarget->isFP64bit())
+ return std::make_pair(0U, Mips::FGR64RegisterClass);
+ else
return std::make_pair(0U, Mips::AFGR64RegisterClass);
- break;
+ }
}
}
return TargetLowering::getRegForInlineAsmConstraint(Constraint, VT);
return false;
return Imm.isZero();
}
+
+unsigned MipsTargetLowering::getJumpTableEncoding() const {
+ if (IsN64)
+ return MachineJumpTableInfo::EK_GPRel64BlockAddress;
+
+ return TargetLowering::getJumpTableEncoding();
+}
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