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 // class MipsCallEntry.
28 MipsCallEntry::MipsCallEntry(StringRef N) {
35 MipsCallEntry::MipsCallEntry(const GlobalValue *V) {
41 bool MipsCallEntry::isConstant(const MachineFrameInfo *) const {
45 bool MipsCallEntry::isAliased(const MachineFrameInfo *) const {
49 bool MipsCallEntry::mayAlias(const MachineFrameInfo *) const {
53 void MipsCallEntry::printCustom(raw_ostream &O) const {
54 O << "MipsCallEntry: ";
63 MipsFunctionInfo::~MipsFunctionInfo() {
64 for (StringMap<const MipsCallEntry *>::iterator
65 I = ExternalCallEntries.begin(), E = ExternalCallEntries.end(); I != E;
69 for (const auto &Entry : GlobalCallEntries)
73 bool MipsFunctionInfo::globalBaseRegSet() const {
77 unsigned MipsFunctionInfo::getGlobalBaseReg() {
78 // Return if it has already been initialized.
82 const TargetRegisterClass *RC =
83 static_cast<const MipsSubtarget &>(MF.getSubtarget()).inMips16Mode()
84 ? &Mips::CPU16RegsRegClass
85 : static_cast<const MipsTargetMachine &>(MF.getTarget())
88 ? &Mips::GPR64RegClass
89 : &Mips::GPR32RegClass;
90 return GlobalBaseReg = MF.getRegInfo().createVirtualRegister(RC);
93 bool MipsFunctionInfo::mips16SPAliasRegSet() const {
94 return Mips16SPAliasReg;
96 unsigned MipsFunctionInfo::getMips16SPAliasReg() {
97 // Return if it has already been initialized.
99 return Mips16SPAliasReg;
101 const TargetRegisterClass *RC = &Mips::CPU16RegsRegClass;
102 return Mips16SPAliasReg = MF.getRegInfo().createVirtualRegister(RC);
105 void MipsFunctionInfo::createEhDataRegsFI() {
106 for (int I = 0; I < 4; ++I) {
107 const TargetRegisterClass *RC =
108 static_cast<const MipsTargetMachine &>(MF.getTarget()).getABI().IsN64()
109 ? &Mips::GPR64RegClass
110 : &Mips::GPR32RegClass;
112 EhDataRegFI[I] = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
113 RC->getAlignment(), false);
117 bool MipsFunctionInfo::isEhDataRegFI(int FI) const {
118 return CallsEhReturn && (FI == EhDataRegFI[0] || FI == EhDataRegFI[1]
119 || FI == EhDataRegFI[2] || FI == EhDataRegFI[3]);
122 MachinePointerInfo MipsFunctionInfo::callPtrInfo(StringRef Name) {
123 const MipsCallEntry *&E = ExternalCallEntries[Name];
126 E = new MipsCallEntry(Name);
128 return MachinePointerInfo(E);
131 MachinePointerInfo MipsFunctionInfo::callPtrInfo(const GlobalValue *Val) {
132 const MipsCallEntry *&E = GlobalCallEntries[Val];
135 E = new MipsCallEntry(Val);
137 return MachinePointerInfo(E);
140 int MipsFunctionInfo::getMoveF64ViaSpillFI(const TargetRegisterClass *RC) {
141 if (MoveF64ViaSpillFI == -1) {
142 MoveF64ViaSpillFI = MF.getFrameInfo()->CreateStackObject(
143 RC->getSize(), RC->getAlignment(), false);
145 return MoveF64ViaSpillFI;
148 void MipsFunctionInfo::anchor() { }