MipsMachineFunction.cpp [plain text]
#include "MipsMachineFunction.h"
#include "MipsInstrInfo.h"
#include "MipsSubtarget.h"
#include "MCTargetDesc/MipsBaseInfo.h"
#include "llvm/Function.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.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::globalBaseRegFixed() const {
return FixGlobalBaseReg;
}
bool MipsFunctionInfo::globalBaseRegSet() const {
return GlobalBaseReg;
}
unsigned MipsFunctionInfo::getGlobalBaseReg() {
if (GlobalBaseReg)
return GlobalBaseReg;
const MipsSubtarget &ST = MF.getTarget().getSubtarget<MipsSubtarget>();
if (FixGlobalBaseReg) return GlobalBaseReg = ST.isABI_N64() ? Mips::GP_64 : Mips::GP;
const TargetRegisterClass *RC;
RC = ST.isABI_N64() ?
Mips::CPU64RegsRegisterClass : Mips::CPURegsRegisterClass;
return GlobalBaseReg = MF.getRegInfo().createVirtualRegister(RC);
}
void MipsFunctionInfo::anchor() { }