74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
#include "FootRegisterInfo.h"
|
|
#include "FootFrameLowering.h"
|
|
|
|
#include "MCTargetDesc/FootMCTargetDesc.h"
|
|
|
|
#include "llvm/ADT/BitVector.h"
|
|
#include "llvm/CodeGen/MachineFrameInfo.h"
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
#include "llvm/CodeGen/TargetInstrInfo.h"
|
|
#include "llvm/CodeGen/TargetSubtargetInfo.h"
|
|
|
|
#define GET_REGINFO_TARGET_DESC
|
|
#include "FootGenRegisterInfo.inc"
|
|
|
|
using namespace llvm;
|
|
|
|
FootRegisterInfo::FootRegisterInfo() : FootGenRegisterInfo(Foot::RRA) {}
|
|
|
|
const MCPhysReg *
|
|
FootRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
|
|
return CSR_Foot_Common_SaveList;
|
|
}
|
|
|
|
const uint32_t *
|
|
FootRegisterInfo::getCallPreservedMask(const MachineFunction &MF,
|
|
CallingConv::ID CC) const {
|
|
return CSR_Foot_Common_RegMask;
|
|
}
|
|
|
|
BitVector FootRegisterInfo::getReservedRegs(const MachineFunction &MF) const {
|
|
BitVector Reserved;
|
|
Reserved.set(Foot::R26);
|
|
Reserved.set(Foot::R27);
|
|
Reserved.set(Foot::RSP);
|
|
Reserved.set(Foot::RRA);
|
|
Reserved.set(Foot::RLC);
|
|
Reserved.set(Foot::RPC);
|
|
return Reserved;
|
|
}
|
|
|
|
bool FootRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator II,
|
|
int SPAdj, unsigned FIOperandNum,
|
|
RegScavenger *RS) const {
|
|
MachineInstr &MI = *II;
|
|
MachineBasicBlock &MBB = *MI.getParent();
|
|
MachineFunction &MF = *MBB.getParent();
|
|
const MachineFrameInfo &MFI = MF.getFrameInfo();
|
|
const TargetInstrInfo &TII = *MF.getSubtarget().getInstrInfo();
|
|
DebugLoc DL = MI.getDebugLoc();
|
|
|
|
MachineOperand &FIOp = MI.getOperand(FIOperandNum);
|
|
int Index = FIOp.getIndex();
|
|
int64_t Offset = MFI.getObjectOffset(Index);
|
|
// adjust to account for stack pointer adjusted before load/store
|
|
Offset += MFI.getStackSize();
|
|
|
|
Register DestReg = Foot::R27;
|
|
if (FIOperandNum == 1) {
|
|
DestReg = Foot::R26;
|
|
}
|
|
|
|
BuildMI(MBB, MI, DebugLoc(), TII.get(Foot::ADDI_D_D_M_A), DestReg)
|
|
.addReg(Foot::RSP)
|
|
.addImm(Offset);
|
|
|
|
FIOp.ChangeToRegister(DestReg, false);
|
|
|
|
return false;
|
|
}
|
|
|
|
Register FootRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
|
|
return Foot::RSP;
|
|
}
|