lib/Target/Mips/Mips16ISelLowering.h

   1 //===-- Mips16ISelLowering.h - Mips16 DAG Lowering Interface ----*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // Subclass of MipsTargetLowering specialized for mips16.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_MIPS_MIPS16ISELLOWERING_H
  15 #define LLVM_LIB_TARGET_MIPS_MIPS16ISELLOWERING_H
  16
  17 #include "MipsISelLowering.h"
  18
  19 namespace llvm {
  20   class Mips16TargetLowering : public MipsTargetLowering  {
  21   public:
  22     explicit Mips16TargetLowering(const MipsTargetMachine &TM,
  23                                   const MipsSubtarget &STI);
  24
  25     bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AddrSpace,
  26                                         unsigned Align,
  27                                         bool *Fast) const override;
  28
  29     MachineBasicBlock *
  30     EmitInstrWithCustomInserter(MachineInstr &MI,
  31                                 MachineBasicBlock *MBB) const override;
  32
  33   private:
  34     bool isEligibleForTailCallOptimization(
  35         const CCState &CCInfo, unsigned NextStackOffset,
  36         const MipsFunctionInfo &FI) const override;
  37
  38     void setMips16HardFloatLibCalls();
  39
  40     unsigned int
  41       getMips16HelperFunctionStubNumber(ArgListTy &Args) const;
  42
  43     const char *getMips16HelperFunction
  44       (Type* RetTy, ArgListTy &Args, bool &needHelper) const;
  45
  46     void
  47     getOpndList(SmallVectorImpl<SDValue> &Ops,
  48                 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
  49                 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
  50                 bool IsCallReloc, CallLoweringInfo &CLI, SDValue Callee,
  51                 SDValue Chain) const override;
  52
  53     MachineBasicBlock *emitSel16(unsigned Opc, MachineInstr &MI,
  54                                  MachineBasicBlock *BB) const;
  55
  56     MachineBasicBlock *emitSeliT16(unsigned Opc1, unsigned Opc2,
  57                                    MachineInstr &MI,
  58                                    MachineBasicBlock *BB) const;
  59
  60     MachineBasicBlock *emitSelT16(unsigned Opc1, unsigned Opc2,
  61                                   MachineInstr &MI,
  62                                   MachineBasicBlock *BB) const;
  63
  64     MachineBasicBlock *emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
  65                                            MachineInstr &MI,
  66                                            MachineBasicBlock *BB) const;
  67
  68     MachineBasicBlock *emitFEXT_T8I8I16_ins(unsigned BtOpc, unsigned CmpiOpc,
  69                                             unsigned CmpiXOpc, bool ImmSigned,
  70                                             MachineInstr &MI,
  71                                             MachineBasicBlock *BB) const;
  72
  73     MachineBasicBlock *emitFEXT_CCRX16_ins(unsigned SltOpc, MachineInstr &MI,
  74                                            MachineBasicBlock *BB) const;
  75
  76     MachineBasicBlock *emitFEXT_CCRXI16_ins(unsigned SltiOpc, unsigned SltiXOpc,
  77                                             MachineInstr &MI,
  78                                             MachineBasicBlock *BB) const;
  79   };
  80 }
  81
  82 #endif