1 //=- HexagonMachineFunctionInfo.h - Hexagon machine function info -*- 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 #ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H
11 #define LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H
13 #include "llvm/CodeGen/MachineFunction.h"
20 const unsigned int StartPacket = 0x1;
21 const unsigned int EndPacket = 0x2;
23 } // end namespace Hexagon
25 /// Hexagon target-specific information for each MachineFunction.
26 class HexagonMachineFunctionInfo : public MachineFunctionInfo {
27 // SRetReturnReg - Some subtargets require that sret lowering includes
28 // returning the value of the returned struct in a register. This field
29 // holds the virtual register into which the sret argument is passed.
30 unsigned SRetReturnReg = 0;
31 unsigned StackAlignBaseVReg = 0; // Aligned-stack base register (virtual)
32 unsigned StackAlignBasePhysReg = 0; // (physical)
33 int VarArgsFrameIndex;
34 bool HasClobberLR = false;
35 bool HasEHReturn = false;
36 std::map<const MachineInstr*, unsigned> PacketInfo;
37 virtual void anchor();
40 HexagonMachineFunctionInfo() = default;
42 HexagonMachineFunctionInfo(MachineFunction &MF) {}
44 unsigned getSRetReturnReg() const { return SRetReturnReg; }
45 void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
47 void setVarArgsFrameIndex(int v) { VarArgsFrameIndex = v; }
48 int getVarArgsFrameIndex() { return VarArgsFrameIndex; }
50 void setStartPacket(MachineInstr* MI) {
51 PacketInfo[MI] |= Hexagon::StartPacket;
53 void setEndPacket(MachineInstr* MI) {
54 PacketInfo[MI] |= Hexagon::EndPacket;
56 bool isStartPacket(const MachineInstr* MI) const {
57 return (PacketInfo.count(MI) &&
58 (PacketInfo.find(MI)->second & Hexagon::StartPacket));
60 bool isEndPacket(const MachineInstr* MI) const {
61 return (PacketInfo.count(MI) &&
62 (PacketInfo.find(MI)->second & Hexagon::EndPacket));
64 void setHasClobberLR(bool v) { HasClobberLR = v; }
65 bool hasClobberLR() const { return HasClobberLR; }
67 bool hasEHReturn() const { return HasEHReturn; };
68 void setHasEHReturn(bool H = true) { HasEHReturn = H; };
70 void setStackAlignBaseVReg(unsigned R) { StackAlignBaseVReg = R; }
71 unsigned getStackAlignBaseVReg() const { return StackAlignBaseVReg; }
73 void setStackAlignBasePhysReg(unsigned R) { StackAlignBasePhysReg = R; }
74 unsigned getStackAlignBasePhysReg() const { return StackAlignBasePhysReg; }
77 } // end namespace llvm
79 #endif // LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H