1 //=- HexagonMachineFunctionInfo.h - Hexagon machine function info -*- 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 #ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H 11 #define LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H 12 13 #include "llvm/CodeGen/MachineFunction.h" 14 #include <map> 15 16 namespace llvm { 17 18 namespace Hexagon { 19 const unsigned int StartPacket = 0x1; 20 const unsigned int EndPacket = 0x2; 21 } 22 23 24 /// Hexagon target-specific information for each MachineFunction. 25 class HexagonMachineFunctionInfo : public MachineFunctionInfo { 26 // SRetReturnReg - Some subtargets require that sret lowering includes 27 // returning the value of the returned struct in a register. This field 28 // holds the virtual register into which the sret argument is passed. 29 unsigned SRetReturnReg; 30 unsigned StackAlignBaseReg; 31 std::vector<MachineInstr*> AllocaAdjustInsts; 32 int VarArgsFrameIndex; 33 bool HasClobberLR; 34 bool HasEHReturn; 35 std::map<const MachineInstr*, unsigned> PacketInfo; 36 virtual void anchor(); 37 38 public: 39 HexagonMachineFunctionInfo() : SRetReturnReg(0), StackAlignBaseReg(0), 40 HasClobberLR(0), HasEHReturn(false) {} 41 42 HexagonMachineFunctionInfo(MachineFunction &MF) : SRetReturnReg(0), 43 StackAlignBaseReg(0), 44 HasClobberLR(0), 45 HasEHReturn(false) {} 46 47 unsigned getSRetReturnReg() const { return SRetReturnReg; } 48 void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; } 49 50 void addAllocaAdjustInst(MachineInstr* MI) { 51 AllocaAdjustInsts.push_back(MI); 52 } 53 const std::vector<MachineInstr*>& getAllocaAdjustInsts() { 54 return AllocaAdjustInsts; 55 } 56 57 void setVarArgsFrameIndex(int v) { VarArgsFrameIndex = v; } 58 int getVarArgsFrameIndex() { return VarArgsFrameIndex; } 59 60 void setStartPacket(MachineInstr* MI) { 61 PacketInfo[MI] |= Hexagon::StartPacket; 62 } 63 void setEndPacket(MachineInstr* MI) { 64 PacketInfo[MI] |= Hexagon::EndPacket; 65 } 66 bool isStartPacket(const MachineInstr* MI) const { 67 return (PacketInfo.count(MI) && 68 (PacketInfo.find(MI)->second & Hexagon::StartPacket)); 69 } 70 bool isEndPacket(const MachineInstr* MI) const { 71 return (PacketInfo.count(MI) && 72 (PacketInfo.find(MI)->second & Hexagon::EndPacket)); 73 } 74 void setHasClobberLR(bool v) { HasClobberLR = v; } 75 bool hasClobberLR() const { return HasClobberLR; } 76 77 bool hasEHReturn() const { return HasEHReturn; }; 78 void setHasEHReturn(bool H = true) { HasEHReturn = H; }; 79 80 void setStackAlignBaseVReg(unsigned R) { StackAlignBaseReg = R; } 81 unsigned getStackAlignBaseVReg() const { return StackAlignBaseReg; } 82 }; 83 } // End llvm namespace 84 85 #endif 86
