Mips16ISelLowering.h revision 263508 
1193323Sed//===-- Mips16ISelLowering.h - Mips16 DAG Lowering Interface ----*- C++ -*-===//
2193323Sed//
3193323Sed//                     The LLVM Compiler Infrastructure
4193323Sed//
5193323Sed// This file is distributed under the University of Illinois Open Source
6193323Sed// License. See LICENSE.TXT for details.
7193323Sed//
8193323Sed//===----------------------------------------------------------------------===//
9193323Sed//
10193323Sed// Subclass of MipsTargetLowering specialized for mips16.
11249423Sdim//
12249423Sdim//===----------------------------------------------------------------------===//
13249423Sdim
14193323Sed#ifndef Mips16ISELLOWERING_H
15201360Srdivacky#define Mips16ISELLOWERING_H
16198090Srdivacky
17193323Sed#include "MipsISelLowering.h"
18193323Sed
19263508Sdimnamespace llvm {
20263508Sdim  class Mips16TargetLowering : public MipsTargetLowering  {
21263508Sdim  public:
22263508Sdim    explicit Mips16TargetLowering(MipsTargetMachine &TM);
23193323Sed
24263508Sdim    virtual bool allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const;
25263508Sdim
26193323Sed    virtual MachineBasicBlock *
27263508Sdim    EmitInstrWithCustomInserter(MachineInstr *MI, MachineBasicBlock *MBB) const;
28263508Sdim
29263508Sdim  private:
30193323Sed    virtual bool
31263508Sdim    isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
32263508Sdim                                      unsigned NextStackOffset,
33263508Sdim                                      const MipsFunctionInfo& FI) const;
34263508Sdim
35263508Sdim    void setMips16HardFloatLibCalls();
36263508Sdim
37218893Sdim    unsigned int
38193323Sed      getMips16HelperFunctionStubNumber(ArgListTy &Args) const;
39193323Sed
40263508Sdim    const char *getMips16HelperFunction
41263508Sdim      (Type* RetTy, ArgListTy &Args, bool &needHelper) const;
42263508Sdim
43193323Sed    virtual void
44263508Sdim    getOpndList(SmallVectorImpl<SDValue> &Ops,
45263508Sdim                std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
46263508Sdim                bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
47263508Sdim                CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const;
48263508Sdim
49263508Sdim    MachineBasicBlock *emitSel16(unsigned Opc, MachineInstr *MI,
50263508Sdim                                 MachineBasicBlock *BB) const;
51263508Sdim
52263508Sdim    MachineBasicBlock *emitSeliT16(unsigned Opc1, unsigned Opc2,
53263508Sdim                                   MachineInstr *MI,
54263508Sdim                                   MachineBasicBlock *BB) const;
55263508Sdim
56263508Sdim    MachineBasicBlock *emitSelT16(unsigned Opc1, unsigned Opc2,
57263508Sdim                                  MachineInstr *MI,
58263508Sdim                                  MachineBasicBlock *BB) const;
59263508Sdim
60263508Sdim    MachineBasicBlock *emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
61263508Sdim                                           MachineInstr *MI,
62198090Srdivacky                                           MachineBasicBlock *BB) const;
63263508Sdim
64193323Sed    MachineBasicBlock *emitFEXT_T8I8I16_ins(
65263508Sdim      unsigned BtOpc, unsigned CmpiOpc, unsigned CmpiXOpc, bool ImmSigned,
66263508Sdim      MachineInstr *MI,  MachineBasicBlock *BB) const;
67263508Sdim
68193323Sed    MachineBasicBlock *emitFEXT_CCRX16_ins(
69263508Sdim      unsigned SltOpc,
70263508Sdim      MachineInstr *MI,  MachineBasicBlock *BB) const;
71193323Sed
72263508Sdim    MachineBasicBlock *emitFEXT_CCRXI16_ins(
73263508Sdim      unsigned SltiOpc, unsigned SltiXOpc,
74263508Sdim      MachineInstr *MI,  MachineBasicBlock *BB )const;
75263508Sdim  };
76193323Sed}
77263508Sdim
78263508Sdim#endif // Mips16ISELLOWERING_H
79263508Sdim