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( 69 unsigned BtOpc, unsigned CmpiOpc, unsigned CmpiXOpc, bool ImmSigned, 70 MachineInstr *MI, MachineBasicBlock *BB) const; 71 72 MachineBasicBlock *emitFEXT_CCRX16_ins( 73 unsigned SltOpc, 74 MachineInstr *MI, MachineBasicBlock *BB) const; 75 76 MachineBasicBlock *emitFEXT_CCRXI16_ins( 77 unsigned SltiOpc, unsigned SltiXOpc, 78 MachineInstr *MI, MachineBasicBlock *BB )const; 79 }; 80 } 81 82 #endif 83
