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llvm/lib/Target/Mips/MipsISelLowering.h
Simon Dardis 93c31fb5c9 [mips] Recommit: "N64 static relocation model support" 
This patch makes one change to GOT handling and two changes to N64's
relocation model handling. Furthermore, the jumptable encodings have
been corrected for static N64.

Big GOT handling is now done via a new SDNode MipsGotHi - this node is
unconditionally lowered to an lui instruction.

The first change to N64's relocation handling is the lifting of the
restriction that N64 always uses PIC. Now it is possible to target static
environments.

The second change adds support for 64 bit symbols and enables them by
default. Previously N64 had patterns for sym32 mode only. In this mode all
symbols are assumed to have 32 bit addresses. sym32 mode support
is selectable with attribute 'sym32'. A follow on patch for clang will
add the necessary frontend parameter.

This partially resolves PR/23485.

Thanks to Brooks Davis for reporting the issue!

This version corrects a "Conditional jump or move depends on uninitialised
value(s)" error detected by valgrind present in the original commit.

Reviewers: dsanders, seanbruno, zoran.jovanovic, vkalintiris

Differential Revision: https://reviews.llvm.org/D23652



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293279 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-27 11:36:52 +00:00

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//===-- MipsISelLowering.h - Mips DAG Lowering Interface --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the interfaces that Mips uses to lower LLVM code into a
// selection DAG.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_MIPS_MIPSISELLOWERING_H
#define LLVM_LIB_TARGET_MIPS_MIPSISELLOWERING_H
#include "MCTargetDesc/MipsABIInfo.h"
#include "MCTargetDesc/MipsBaseInfo.h"
#include "Mips.h"
#include "llvm/CodeGen/CallingConvLower.h"
#include "llvm/CodeGen/SelectionDAG.h"
#include "llvm/IR/Function.h"
#include "llvm/Target/TargetLowering.h"
#include <deque>
#include <string>
namespace llvm {
namespace MipsISD {
enum NodeType : unsigned {
// Start the numbering from where ISD NodeType finishes.
FIRST_NUMBER = ISD::BUILTIN_OP_END,
// Jump and link (call)
JmpLink,
// Tail call
TailCall,
// Get the Highest (63-48) 16 bits from a 64-bit immediate
Highest,
// Get the Higher (47-32) 16 bits from a 64-bit immediate
Higher,
// Get the High 16 bits from a 32/64-bit immediate
// No relation with Mips Hi register
Hi,
// Get the Lower 16 bits from a 32/64-bit immediate
// No relation with Mips Lo register
Lo,
// Get the High 16 bits from a 32 bit immediate for accessing the GOT.
GotHi,
// Handle gp_rel (small data/bss sections) relocation.
GPRel,
// Thread Pointer
ThreadPointer,
// Floating Point Branch Conditional
FPBrcond,
// Floating Point Compare
FPCmp,
// Floating Point Conditional Moves
CMovFP_T,
CMovFP_F,
// FP-to-int truncation node.
TruncIntFP,
// Return
Ret,
// Interrupt, exception, error trap Return
ERet,
// Software Exception Return.
EH_RETURN,
// Node used to extract integer from accumulator.
MFHI,
MFLO,
// Node used to insert integers to accumulator.
MTLOHI,
// Mult nodes.
Mult,
Multu,
// MAdd/Sub nodes
MAdd,
MAddu,
MSub,
MSubu,
// DivRem(u)
DivRem,
DivRemU,
DivRem16,
DivRemU16,
BuildPairF64,
ExtractElementF64,
Wrapper,
DynAlloc,
Sync,
Ext,
Ins,
// EXTR.W instrinsic nodes.
EXTP,
EXTPDP,
EXTR_S_H,
EXTR_W,
EXTR_R_W,
EXTR_RS_W,
SHILO,
MTHLIP,
// DPA.W intrinsic nodes.
MULSAQ_S_W_PH,
MAQ_S_W_PHL,
MAQ_S_W_PHR,
MAQ_SA_W_PHL,
MAQ_SA_W_PHR,
DPAU_H_QBL,
DPAU_H_QBR,
DPSU_H_QBL,
DPSU_H_QBR,
DPAQ_S_W_PH,
DPSQ_S_W_PH,
DPAQ_SA_L_W,
DPSQ_SA_L_W,
DPA_W_PH,
DPS_W_PH,
DPAQX_S_W_PH,
DPAQX_SA_W_PH,
DPAX_W_PH,
DPSX_W_PH,
DPSQX_S_W_PH,
DPSQX_SA_W_PH,
MULSA_W_PH,
MULT,
MULTU,
MADD_DSP,
MADDU_DSP,
MSUB_DSP,
MSUBU_DSP,
// DSP shift nodes.
SHLL_DSP,
SHRA_DSP,
SHRL_DSP,
// DSP setcc and select_cc nodes.
SETCC_DSP,
SELECT_CC_DSP,
// Vector comparisons.
// These take a vector and return a boolean.
VALL_ZERO,
VANY_ZERO,
VALL_NONZERO,
VANY_NONZERO,
// These take a vector and return a vector bitmask.
VCEQ,
VCLE_S,
VCLE_U,
VCLT_S,
VCLT_U,
// Element-wise vector max/min.
VSMAX,
VSMIN,
VUMAX,
VUMIN,
// Vector Shuffle with mask as an operand
VSHF, // Generic shuffle
SHF, // 4-element set shuffle.
ILVEV, // Interleave even elements
ILVOD, // Interleave odd elements
ILVL, // Interleave left elements
ILVR, // Interleave right elements
PCKEV, // Pack even elements
PCKOD, // Pack odd elements
// Vector Lane Copy
INSVE, // Copy element from one vector to another
// Combined (XOR (OR $a, $b), -1)
VNOR,
// Extended vector element extraction
VEXTRACT_SEXT_ELT,
VEXTRACT_ZEXT_ELT,
// Load/Store Left/Right nodes.
LWL = ISD::FIRST_TARGET_MEMORY_OPCODE,
LWR,
SWL,
SWR,
LDL,
LDR,
SDL,
SDR
};
}
//===--------------------------------------------------------------------===//
// TargetLowering Implementation
//===--------------------------------------------------------------------===//
class MipsFunctionInfo;
class MipsSubtarget;
class MipsCCState;
class MipsTargetLowering : public TargetLowering {
bool isMicroMips;
public:
explicit MipsTargetLowering(const MipsTargetMachine &TM,
const MipsSubtarget &STI);
static const MipsTargetLowering *create(const MipsTargetMachine &TM,
const MipsSubtarget &STI);
/// createFastISel - This method returns a target specific FastISel object,
/// or null if the target does not support "fast" ISel.
FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
const TargetLibraryInfo *libInfo) const override;
MVT getScalarShiftAmountTy(const DataLayout &, EVT) const override {
return MVT::i32;
}
bool isCheapToSpeculateCttz() const override;
bool isCheapToSpeculateCtlz() const override;
ISD::NodeType getExtendForAtomicOps() const override {
return ISD::SIGN_EXTEND;
}
void LowerOperationWrapper(SDNode *N,
SmallVectorImpl<SDValue> &Results,
SelectionDAG &DAG) const override;
/// LowerOperation - Provide custom lowering hooks for some operations.
SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override;
/// ReplaceNodeResults - Replace the results of node with an illegal result
/// type with new values built out of custom code.
///
void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results,
SelectionDAG &DAG) const override;
/// getTargetNodeName - This method returns the name of a target specific
// DAG node.
const char *getTargetNodeName(unsigned Opcode) const override;
/// getSetCCResultType - get the ISD::SETCC result ValueType
EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context,
EVT VT) const override;
SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const override;
MachineBasicBlock *
EmitInstrWithCustomInserter(MachineInstr &MI,
MachineBasicBlock *MBB) const override;
void HandleByVal(CCState *, unsigned &, unsigned) const override;
unsigned getRegisterByName(const char* RegName, EVT VT,
SelectionDAG &DAG) const override;
/// If a physical register, this returns the register that receives the
/// exception address on entry to an EH pad.
unsigned
getExceptionPointerRegister(const Constant *PersonalityFn) const override {
return ABI.IsN64() ? Mips::A0_64 : Mips::A0;
}
/// If a physical register, this returns the register that receives the
/// exception typeid on entry to a landing pad.
unsigned
getExceptionSelectorRegister(const Constant *PersonalityFn) const override {
return ABI.IsN64() ? Mips::A1_64 : Mips::A1;
}
/// Returns true if a cast between SrcAS and DestAS is a noop.
bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
// Mips doesn't have any special address spaces so we just reserve
// the first 256 for software use (e.g. OpenCL) and treat casts
// between them as noops.
return SrcAS < 256 && DestAS < 256;
}
bool isJumpTableRelative() const override {
return getTargetMachine().isPositionIndependent();
}
protected:
SDValue getGlobalReg(SelectionDAG &DAG, EVT Ty) const;
// This method creates the following nodes, which are necessary for
// computing a local symbol's address:
//
// (add (load (wrapper $gp, %got(sym)), %lo(sym))
template <class NodeTy>
SDValue getAddrLocal(NodeTy *N, const SDLoc &DL, EVT Ty, SelectionDAG &DAG,
bool IsN32OrN64) const {
unsigned GOTFlag = IsN32OrN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT;
SDValue GOT = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty),
getTargetNode(N, Ty, DAG, GOTFlag));
SDValue Load =
DAG.getLoad(Ty, DL, DAG.getEntryNode(), GOT,
MachinePointerInfo::getGOT(DAG.getMachineFunction()));
unsigned LoFlag = IsN32OrN64 ? MipsII::MO_GOT_OFST : MipsII::MO_ABS_LO;
SDValue Lo = DAG.getNode(MipsISD::Lo, DL, Ty,
getTargetNode(N, Ty, DAG, LoFlag));
return DAG.getNode(ISD::ADD, DL, Ty, Load, Lo);
}
// This method creates the following nodes, which are necessary for
// computing a global symbol's address:
//
// (load (wrapper $gp, %got(sym)))
template <class NodeTy>
SDValue getAddrGlobal(NodeTy *N, const SDLoc &DL, EVT Ty, SelectionDAG &DAG,
unsigned Flag, SDValue Chain,
const MachinePointerInfo &PtrInfo) const {
SDValue Tgt = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty),
getTargetNode(N, Ty, DAG, Flag));
return DAG.getLoad(Ty, DL, Chain, Tgt, PtrInfo);
}
// This method creates the following nodes, which are necessary for
// computing a global symbol's address in large-GOT mode:
//
// (load (wrapper (add %hi(sym), $gp), %lo(sym)))
template <class NodeTy>
SDValue getAddrGlobalLargeGOT(NodeTy *N, const SDLoc &DL, EVT Ty,
SelectionDAG &DAG, unsigned HiFlag,
unsigned LoFlag, SDValue Chain,
const MachinePointerInfo &PtrInfo) const {
SDValue Hi = DAG.getNode(MipsISD::GotHi, DL, Ty,
getTargetNode(N, Ty, DAG, HiFlag));
Hi = DAG.getNode(ISD::ADD, DL, Ty, Hi, getGlobalReg(DAG, Ty));
SDValue Wrapper = DAG.getNode(MipsISD::Wrapper, DL, Ty, Hi,
getTargetNode(N, Ty, DAG, LoFlag));
return DAG.getLoad(Ty, DL, Chain, Wrapper, PtrInfo);
}
// This method creates the following nodes, which are necessary for
// computing a symbol's address in non-PIC mode:
//
// (add %hi(sym), %lo(sym))
//
// This method covers O32, N32 and N64 in sym32 mode.
template <class NodeTy>
SDValue getAddrNonPIC(NodeTy *N, const SDLoc &DL, EVT Ty,
SelectionDAG &DAG) const {
SDValue Hi = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_HI);
SDValue Lo = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_LO);
return DAG.getNode(ISD::ADD, DL, Ty,
DAG.getNode(MipsISD::Hi, DL, Ty, Hi),
DAG.getNode(MipsISD::Lo, DL, Ty, Lo));
}
// This method creates the following nodes, which are necessary for
// computing a symbol's address in non-PIC mode for N64.
//
// (add (shl (add (shl (add %highest(sym), %higher(sim)), 16), %high(sym)),
// 16), %lo(%sym))
//
// FIXME: This method is not efficent for (micro)MIPS64R6.
template <class NodeTy>
SDValue getAddrNonPICSym64(NodeTy *N, const SDLoc &DL, EVT Ty,
SelectionDAG &DAG) const {
SDValue Hi = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_HI);
SDValue Lo = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_LO);
SDValue Highest =
DAG.getNode(MipsISD::Highest, DL, Ty,
getTargetNode(N, Ty, DAG, MipsII::MO_HIGHEST));
SDValue Higher = getTargetNode(N, Ty, DAG, MipsII::MO_HIGHER);
SDValue HigherPart =
DAG.getNode(ISD::ADD, DL, Ty, Highest,
DAG.getNode(MipsISD::Higher, DL, Ty, Higher));
SDValue Cst = DAG.getConstant(16, DL, MVT::i32);
SDValue Shift = DAG.getNode(ISD::SHL, DL, Ty, HigherPart, Cst);
SDValue Add = DAG.getNode(ISD::ADD, DL, Ty, Shift,
DAG.getNode(MipsISD::Hi, DL, Ty, Hi));
SDValue Shift2 = DAG.getNode(ISD::SHL, DL, Ty, Add, Cst);
return DAG.getNode(ISD::ADD, DL, Ty, Shift2,
DAG.getNode(MipsISD::Lo, DL, Ty, Lo));
}
// This method creates the following nodes, which are necessary for
// computing a symbol's address using gp-relative addressing:
//
// (add $gp, %gp_rel(sym))
template <class NodeTy>
SDValue getAddrGPRel(NodeTy *N, const SDLoc &DL, EVT Ty,
SelectionDAG &DAG) const {
assert(Ty == MVT::i32);
SDValue GPRel = getTargetNode(N, Ty, DAG, MipsII::MO_GPREL);
return DAG.getNode(ISD::ADD, DL, Ty,
DAG.getRegister(Mips::GP, Ty),
DAG.getNode(MipsISD::GPRel, DL, DAG.getVTList(Ty),
GPRel));
}
/// This function fills Ops, which is the list of operands that will later
/// be used when a function call node is created. It also generates
/// copyToReg nodes to set up argument registers.
virtual void
getOpndList(SmallVectorImpl<SDValue> &Ops,
std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
bool IsCallReloc, CallLoweringInfo &CLI, SDValue Callee,
SDValue Chain) const;
protected:
SDValue lowerLOAD(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerSTORE(SDValue Op, SelectionDAG &DAG) const;
// Subtarget Info
const MipsSubtarget &Subtarget;
// Cache the ABI from the TargetMachine, we use it everywhere.
const MipsABIInfo &ABI;
private:
// Create a TargetGlobalAddress node.
SDValue getTargetNode(GlobalAddressSDNode *N, EVT Ty, SelectionDAG &DAG,
unsigned Flag) const;
// Create a TargetExternalSymbol node.
SDValue getTargetNode(ExternalSymbolSDNode *N, EVT Ty, SelectionDAG &DAG,
unsigned Flag) const;
// Create a TargetBlockAddress node.
SDValue getTargetNode(BlockAddressSDNode *N, EVT Ty, SelectionDAG &DAG,
unsigned Flag) const;
// Create a TargetJumpTable node.
SDValue getTargetNode(JumpTableSDNode *N, EVT Ty, SelectionDAG &DAG,
unsigned Flag) const;
// Create a TargetConstantPool node.
SDValue getTargetNode(ConstantPoolSDNode *N, EVT Ty, SelectionDAG &DAG,
unsigned Flag) const;
// Lower Operand helpers
SDValue LowerCallResult(SDValue Chain, SDValue InFlag,
CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
const SDLoc &dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals,
TargetLowering::CallLoweringInfo &CLI) const;
// Lower Operand specifics
SDValue lowerBRCOND(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerJumpTable(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerSELECT(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerSETCC(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerVASTART(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerVAARG(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerFABS(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerEH_RETURN(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerATOMIC_FENCE(SDValue Op, SelectionDAG& DAG) const;
SDValue lowerShiftLeftParts(SDValue Op, SelectionDAG& DAG) const;
SDValue lowerShiftRightParts(SDValue Op, SelectionDAG& DAG,
bool IsSRA) const;
SDValue lowerEH_DWARF_CFA(SDValue Op, SelectionDAG &DAG) const;
SDValue lowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG) const;
/// isEligibleForTailCallOptimization - Check whether the call is eligible
/// for tail call optimization.
virtual bool
isEligibleForTailCallOptimization(const CCState &CCInfo,
unsigned NextStackOffset,
const MipsFunctionInfo &FI) const = 0;
/// copyByValArg - Copy argument registers which were used to pass a byval
/// argument to the stack. Create a stack frame object for the byval
/// argument.
void copyByValRegs(SDValue Chain, const SDLoc &DL,
std::vector<SDValue> &OutChains, SelectionDAG &DAG,
const ISD::ArgFlagsTy &Flags,
SmallVectorImpl<SDValue> &InVals,
const Argument *FuncArg, unsigned FirstReg,
unsigned LastReg, const CCValAssign &VA,
MipsCCState &State) const;
/// passByValArg - Pass a byval argument in registers or on stack.
void passByValArg(SDValue Chain, const SDLoc &DL,
std::deque<std::pair<unsigned, SDValue>> &RegsToPass,
SmallVectorImpl<SDValue> &MemOpChains, SDValue StackPtr,
MachineFrameInfo &MFI, SelectionDAG &DAG, SDValue Arg,
unsigned FirstReg, unsigned LastReg,
const ISD::ArgFlagsTy &Flags, bool isLittle,
const CCValAssign &VA) const;
/// writeVarArgRegs - Write variable function arguments passed in registers
/// to the stack. Also create a stack frame object for the first variable
/// argument.
void writeVarArgRegs(std::vector<SDValue> &OutChains, SDValue Chain,
const SDLoc &DL, SelectionDAG &DAG,
CCState &State) const;
SDValue
LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::InputArg> &Ins,
const SDLoc &dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const override;
SDValue passArgOnStack(SDValue StackPtr, unsigned Offset, SDValue Chain,
SDValue Arg, const SDLoc &DL, bool IsTailCall,
SelectionDAG &DAG) const;
SDValue LowerCall(TargetLowering::CallLoweringInfo &CLI,
SmallVectorImpl<SDValue> &InVals) const override;
bool CanLowerReturn(CallingConv::ID CallConv, MachineFunction &MF,
bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
LLVMContext &Context) const override;
SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
const SmallVectorImpl<SDValue> &OutVals,
const SDLoc &dl, SelectionDAG &DAG) const override;
SDValue LowerInterruptReturn(SmallVectorImpl<SDValue> &RetOps,
const SDLoc &DL, SelectionDAG &DAG) const;
bool shouldSignExtendTypeInLibCall(EVT Type, bool IsSigned) const override;
// Inline asm support
ConstraintType getConstraintType(StringRef Constraint) const override;
/// Examine constraint string and operand type and determine a weight value.
/// The operand object must already have been set up with the operand type.
ConstraintWeight getSingleConstraintMatchWeight(
AsmOperandInfo &info, const char *constraint) const override;
/// This function parses registers that appear in inline-asm constraints.
/// It returns pair (0, 0) on failure.
std::pair<unsigned, const TargetRegisterClass *>
parseRegForInlineAsmConstraint(StringRef C, MVT VT) const;
std::pair<unsigned, const TargetRegisterClass *>
getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
StringRef Constraint, MVT VT) const override;
/// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
/// vector. If it is invalid, don't add anything to Ops. If hasMemory is
/// true it means one of the asm constraint of the inline asm instruction
/// being processed is 'm'.
void LowerAsmOperandForConstraint(SDValue Op,
std::string &Constraint,
std::vector<SDValue> &Ops,
SelectionDAG &DAG) const override;
unsigned
getInlineAsmMemConstraint(StringRef ConstraintCode) const override {
if (ConstraintCode == "R")
return InlineAsm::Constraint_R;
else if (ConstraintCode == "ZC")
return InlineAsm::Constraint_ZC;
return TargetLowering::getInlineAsmMemConstraint(ConstraintCode);
}
bool isLegalAddressingMode(const DataLayout &DL, const AddrMode &AM,
Type *Ty, unsigned AS) const override;
bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const override;
EVT getOptimalMemOpType(uint64_t Size, unsigned DstAlign,
unsigned SrcAlign,
bool IsMemset, bool ZeroMemset,
bool MemcpyStrSrc,
MachineFunction &MF) const override;
/// isFPImmLegal - Returns true if the target can instruction select the
/// specified FP immediate natively. If false, the legalizer will
/// materialize the FP immediate as a load from a constant pool.
bool isFPImmLegal(const APFloat &Imm, EVT VT) const override;
unsigned getJumpTableEncoding() const override;
bool useSoftFloat() const override;
bool shouldInsertFencesForAtomic(const Instruction *I) const override {
return true;
}
/// Emit a sign-extension using sll/sra, seb, or seh appropriately.
MachineBasicBlock *emitSignExtendToI32InReg(MachineInstr &MI,
MachineBasicBlock *BB,
unsigned Size, unsigned DstReg,
unsigned SrcRec) const;
MachineBasicBlock *emitAtomicBinary(MachineInstr &MI, MachineBasicBlock *BB,
unsigned Size, unsigned BinOpcode,
bool Nand = false) const;
MachineBasicBlock *emitAtomicBinaryPartword(MachineInstr &MI,
MachineBasicBlock *BB,
unsigned Size,
unsigned BinOpcode,
bool Nand = false) const;
MachineBasicBlock *emitAtomicCmpSwap(MachineInstr &MI,
MachineBasicBlock *BB,
unsigned Size) const;
MachineBasicBlock *emitAtomicCmpSwapPartword(MachineInstr &MI,
MachineBasicBlock *BB,
unsigned Size) const;
MachineBasicBlock *emitSEL_D(MachineInstr &MI, MachineBasicBlock *BB) const;
MachineBasicBlock *emitPseudoSELECT(MachineInstr &MI, MachineBasicBlock *BB,
bool isFPCmp, unsigned Opc) const;
};
/// Create MipsTargetLowering objects.
const MipsTargetLowering *
createMips16TargetLowering(const MipsTargetMachine &TM,
const MipsSubtarget &STI);
const MipsTargetLowering *
createMipsSETargetLowering(const MipsTargetMachine &TM,
const MipsSubtarget &STI);
namespace Mips {
FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
const TargetLibraryInfo *libInfo);
}
}
#endif
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