1 //===-- Mips16ISelLowering.h - Mips16 DAG Lowering Interface ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Subclass of MipsTargetLowering specialized for mips16.
12 //===----------------------------------------------------------------------===//
14 #ifndef Mips16ISELLOWERING_H
15 #define Mips16ISELLOWERING_H
17 #include "MipsISelLowering.h"
20 class Mips16TargetLowering : public MipsTargetLowering {
22 explicit Mips16TargetLowering(MipsTargetMachine &TM);
24 virtual bool allowsUnalignedMemoryAccesses(EVT VT, bool *Fast) const;
26 virtual MachineBasicBlock *
27 EmitInstrWithCustomInserter(MachineInstr *MI, MachineBasicBlock *MBB) const;
31 isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
32 unsigned NextStackOffset,
33 const MipsFunctionInfo& FI) const;
35 void setMips16HardFloatLibCalls();
38 getMips16HelperFunctionStubNumber(ArgListTy &Args) const;
40 const char *getMips16HelperFunction
41 (Type* RetTy, ArgListTy &Args, bool &needHelper) const;
44 getOpndList(SmallVectorImpl<SDValue> &Ops,
45 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
46 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
47 CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const;
49 MachineBasicBlock *emitSel16(unsigned Opc, MachineInstr *MI,
50 MachineBasicBlock *BB) const;
52 MachineBasicBlock *emitSeliT16(unsigned Opc1, unsigned Opc2,
54 MachineBasicBlock *BB) const;
56 MachineBasicBlock *emitSelT16(unsigned Opc1, unsigned Opc2,
58 MachineBasicBlock *BB) const;
60 MachineBasicBlock *emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
62 MachineBasicBlock *BB) const;
64 MachineBasicBlock *emitFEXT_T8I8I16_ins(
65 unsigned BtOpc, unsigned CmpiOpc, unsigned CmpiXOpc, bool ImmSigned,
66 MachineInstr *MI, MachineBasicBlock *BB) const;
68 MachineBasicBlock *emitFEXT_CCRX16_ins(
70 MachineInstr *MI, MachineBasicBlock *BB) const;
72 MachineBasicBlock *emitFEXT_CCRXI16_ins(
73 unsigned SltiOpc, unsigned SltiXOpc,
74 MachineInstr *MI, MachineBasicBlock *BB )const;
78 #endif // Mips16ISELLOWERING_H