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, unsigned AddrSpace,
27 virtual MachineBasicBlock *
28 EmitInstrWithCustomInserter(MachineInstr *MI, MachineBasicBlock *MBB) const;
32 isEligibleForTailCallOptimization(const MipsCC &MipsCCInfo,
33 unsigned NextStackOffset,
34 const MipsFunctionInfo& FI) const;
36 void setMips16HardFloatLibCalls();
39 getMips16HelperFunctionStubNumber(ArgListTy &Args) const;
41 const char *getMips16HelperFunction
42 (Type* RetTy, ArgListTy &Args, bool &needHelper) const;
45 getOpndList(SmallVectorImpl<SDValue> &Ops,
46 std::deque< std::pair<unsigned, SDValue> > &RegsToPass,
47 bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage,
48 CallLoweringInfo &CLI, SDValue Callee, SDValue Chain) const;
50 MachineBasicBlock *emitSel16(unsigned Opc, MachineInstr *MI,
51 MachineBasicBlock *BB) const;
53 MachineBasicBlock *emitSeliT16(unsigned Opc1, unsigned Opc2,
55 MachineBasicBlock *BB) const;
57 MachineBasicBlock *emitSelT16(unsigned Opc1, unsigned Opc2,
59 MachineBasicBlock *BB) const;
61 MachineBasicBlock *emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc,
63 MachineBasicBlock *BB) const;
65 MachineBasicBlock *emitFEXT_T8I8I16_ins(
66 unsigned BtOpc, unsigned CmpiOpc, unsigned CmpiXOpc, bool ImmSigned,
67 MachineInstr *MI, MachineBasicBlock *BB) const;
69 MachineBasicBlock *emitFEXT_CCRX16_ins(
71 MachineInstr *MI, MachineBasicBlock *BB) const;
73 MachineBasicBlock *emitFEXT_CCRXI16_ins(
74 unsigned SltiOpc, unsigned SltiXOpc,
75 MachineInstr *MI, MachineBasicBlock *BB )const;
79 #endif // Mips16ISELLOWERING_H