1 //===-- MipsMachineFunctionInfo.cpp - Private data used for Mips ----------===//
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 #include "MCTargetDesc/MipsBaseInfo.h"
11 #include "MipsInstrInfo.h"
12 #include "MipsMachineFunction.h"
13 #include "MipsSubtarget.h"
14 #include "MipsTargetMachine.h"
15 #include "llvm/CodeGen/MachineInstrBuilder.h"
16 #include "llvm/CodeGen/MachineRegisterInfo.h"
17 #include "llvm/IR/Function.h"
18 #include "llvm/Support/CommandLine.h"
19 #include "llvm/Support/raw_ostream.h"
24 FixGlobalBaseReg("mips-fix-global-base-reg", cl::Hidden, cl::init(true),
25 cl::desc("Always use $gp as the global base register."));
27 MipsFunctionInfo::~MipsFunctionInfo() {}
29 bool MipsFunctionInfo::globalBaseRegSet() const {
33 unsigned MipsFunctionInfo::getGlobalBaseReg() {
34 // Return if it has already been initialized.
38 MipsSubtarget const &STI =
39 static_cast<const MipsSubtarget &>(MF.getSubtarget());
41 const TargetRegisterClass *RC =
43 ? &Mips::CPU16RegsRegClass
44 : STI.inMicroMipsMode()
45 ? &Mips::GPRMM16RegClass
46 : static_cast<const MipsTargetMachine &>(MF.getTarget())
49 ? &Mips::GPR64RegClass
50 : &Mips::GPR32RegClass;
51 return GlobalBaseReg = MF.getRegInfo().createVirtualRegister(RC);
54 bool MipsFunctionInfo::mips16SPAliasRegSet() const {
55 return Mips16SPAliasReg;
57 unsigned MipsFunctionInfo::getMips16SPAliasReg() {
58 // Return if it has already been initialized.
60 return Mips16SPAliasReg;
62 const TargetRegisterClass *RC = &Mips::CPU16RegsRegClass;
63 return Mips16SPAliasReg = MF.getRegInfo().createVirtualRegister(RC);
66 void MipsFunctionInfo::createEhDataRegsFI() {
67 for (int I = 0; I < 4; ++I) {
68 const TargetRegisterClass *RC =
69 static_cast<const MipsTargetMachine &>(MF.getTarget()).getABI().IsN64()
70 ? &Mips::GPR64RegClass
71 : &Mips::GPR32RegClass;
73 EhDataRegFI[I] = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
74 RC->getAlignment(), false);
78 bool MipsFunctionInfo::isEhDataRegFI(int FI) const {
79 return CallsEhReturn && (FI == EhDataRegFI[0] || FI == EhDataRegFI[1]
80 || FI == EhDataRegFI[2] || FI == EhDataRegFI[3]);
83 MachinePointerInfo MipsFunctionInfo::callPtrInfo(const char *ES) {
84 return MachinePointerInfo(MF.getPSVManager().getExternalSymbolCallEntry(ES));
87 MachinePointerInfo MipsFunctionInfo::callPtrInfo(const GlobalValue *GV) {
88 return MachinePointerInfo(MF.getPSVManager().getGlobalValueCallEntry(GV));
91 int MipsFunctionInfo::getMoveF64ViaSpillFI(const TargetRegisterClass *RC) {
92 if (MoveF64ViaSpillFI == -1) {
93 MoveF64ViaSpillFI = MF.getFrameInfo()->CreateStackObject(
94 RC->getSize(), RC->getAlignment(), false);
96 return MoveF64ViaSpillFI;
99 void MipsFunctionInfo::anchor() { }