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 setMips16LibcallName(RTLIB::Libcall, const char *Name);
37 void setMips16HardFloatLibCalls();
40 getMips16HelperFunctionStubNumber(ArgListTy &Args) const;
42 const char *getMips16HelperFunction
43 (Type* RetTy, ArgListTy &Args, bool &needHelper) const;
46 getOpndList(SmallVectorImpl<SDValue> &Ops,
47 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
48 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
49 CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const;
51 MachineBasicBlock *emitSel16(unsigned Opc, MachineInstr *MI,
52 MachineBasicBlock *BB) const;
54 MachineBasicBlock *emitSeliT16(unsigned Opc1, unsigned Opc2,
56 MachineBasicBlock *BB) const;
58 MachineBasicBlock *emitSelT16(unsigned Opc1, unsigned Opc2,
60 MachineBasicBlock *BB) const;
62 MachineBasicBlock *emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
64 MachineBasicBlock *BB) const;
66 MachineBasicBlock *emitFEXT_T8I8I16_ins(
67 unsigned BtOpc, unsigned CmpiOpc, unsigned CmpiXOpc, bool ImmSigned,
68 MachineInstr *MI, MachineBasicBlock *BB) const;
70 MachineBasicBlock *emitFEXT_CCRX16_ins(
72 MachineInstr *MI, MachineBasicBlock *BB) const;
74 MachineBasicBlock *emitFEXT_CCRXI16_ins(
75 unsigned SltiOpc, unsigned SltiXOpc,
76 MachineInstr *MI, MachineBasicBlock *BB )const;
80 #endif // Mips16ISELLOWERING_H