forked from OSchip/llvm-project
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
//===-- MipsMachineFunctionInfo.cpp - Private data used for Mips ----------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "MipsMachineFunction.h"
|
|
#include "MCTargetDesc/MipsBaseInfo.h"
|
|
#include "MipsInstrInfo.h"
|
|
#include "MipsSubtarget.h"
|
|
#include "llvm/CodeGen/MachineInstrBuilder.h"
|
|
#include "llvm/CodeGen/MachineRegisterInfo.h"
|
|
#include "llvm/Function.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
|
|
using namespace llvm;
|
|
|
|
static cl::opt<bool>
|
|
FixGlobalBaseReg("mips-fix-global-base-reg", cl::Hidden, cl::init(true),
|
|
cl::desc("Always use $gp as the global base register."));
|
|
|
|
bool MipsFunctionInfo::globalBaseRegSet() const {
|
|
return GlobalBaseReg;
|
|
}
|
|
|
|
unsigned MipsFunctionInfo::getGlobalBaseReg() {
|
|
// Return if it has already been initialized.
|
|
if (GlobalBaseReg)
|
|
return GlobalBaseReg;
|
|
|
|
const MipsSubtarget &ST = MF.getTarget().getSubtarget<MipsSubtarget>();
|
|
|
|
const TargetRegisterClass *RC;
|
|
if (ST.inMips16Mode())
|
|
RC=(const TargetRegisterClass*)&Mips::CPU16RegsRegClass;
|
|
else
|
|
RC = ST.isABI_N64() ?
|
|
(const TargetRegisterClass*)&Mips::CPU64RegsRegClass :
|
|
(const TargetRegisterClass*)&Mips::CPURegsRegClass;
|
|
return GlobalBaseReg = MF.getRegInfo().createVirtualRegister(RC);
|
|
}
|
|
|
|
bool MipsFunctionInfo::mips16SPAliasRegSet() const {
|
|
return Mips16SPAliasReg;
|
|
}
|
|
unsigned MipsFunctionInfo::getMips16SPAliasReg() {
|
|
// Return if it has already been initialized.
|
|
if (Mips16SPAliasReg)
|
|
return Mips16SPAliasReg;
|
|
|
|
const TargetRegisterClass *RC;
|
|
RC=(const TargetRegisterClass*)&Mips::CPU16RegsRegClass;
|
|
return Mips16SPAliasReg = MF.getRegInfo().createVirtualRegister(RC);
|
|
}
|
|
|
|
void MipsFunctionInfo::anchor() { }
|