HexagonMachineFunctionInfo.h
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//=- HexagonMachineFunctionInfo.h - Hexagon machine function info -*- C++ -*-=//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H
#define LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H
#include "llvm/CodeGen/MachineFunction.h"
#include <map>
namespace llvm {
namespace Hexagon {
const unsigned int StartPacket = 0x1;
const unsigned int EndPacket = 0x2;
} // end namespace Hexagon
/// Hexagon target-specific information for each MachineFunction.
class HexagonMachineFunctionInfo : public MachineFunctionInfo {
// SRetReturnReg - Some subtargets require that sret lowering includes
// returning the value of the returned struct in a register. This field
// holds the virtual register into which the sret argument is passed.
unsigned SRetReturnReg = 0;
unsigned StackAlignBaseVReg = 0; // Aligned-stack base register (virtual)
unsigned StackAlignBasePhysReg = 0; // (physical)
int VarArgsFrameIndex;
bool HasClobberLR = false;
bool HasEHReturn = false;
std::map<const MachineInstr*, unsigned> PacketInfo;
virtual void anchor();
public:
HexagonMachineFunctionInfo() = default;
HexagonMachineFunctionInfo(MachineFunction &MF) {}
unsigned getSRetReturnReg() const { return SRetReturnReg; }
void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
void setVarArgsFrameIndex(int v) { VarArgsFrameIndex = v; }
int getVarArgsFrameIndex() { return VarArgsFrameIndex; }
void setStartPacket(MachineInstr* MI) {
PacketInfo[MI] |= Hexagon::StartPacket;
}
void setEndPacket(MachineInstr* MI) {
PacketInfo[MI] |= Hexagon::EndPacket;
}
bool isStartPacket(const MachineInstr* MI) const {
return (PacketInfo.count(MI) &&
(PacketInfo.find(MI)->second & Hexagon::StartPacket));
}
bool isEndPacket(const MachineInstr* MI) const {
return (PacketInfo.count(MI) &&
(PacketInfo.find(MI)->second & Hexagon::EndPacket));
}
void setHasClobberLR(bool v) { HasClobberLR = v; }
bool hasClobberLR() const { return HasClobberLR; }
bool hasEHReturn() const { return HasEHReturn; };
void setHasEHReturn(bool H = true) { HasEHReturn = H; };
void setStackAlignBaseVReg(unsigned R) { StackAlignBaseVReg = R; }
unsigned getStackAlignBaseVReg() const { return StackAlignBaseVReg; }
void setStackAlignBasePhysReg(unsigned R) { StackAlignBasePhysReg = R; }
unsigned getStackAlignBasePhysReg() const { return StackAlignBasePhysReg; }
};
} // end namespace llvm
#endif // LLVM_LIB_TARGET_HEXAGON_HEXAGONMACHINEFUNCTIONINFO_H