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 "MipsMachineFunction.h"
11 #include "MCTargetDesc/MipsBaseInfo.h"
12 #include "MipsInstrInfo.h"
13 #include "MipsSubtarget.h"
14 #include "llvm/CodeGen/MachineInstrBuilder.h"
15 #include "llvm/CodeGen/MachineRegisterInfo.h"
16 #include "llvm/IR/Function.h"
17 #include "llvm/Support/CommandLine.h"
18 #include "llvm/Support/raw_ostream.h"
23 FixGlobalBaseReg("mips-fix-global-base-reg", cl::Hidden, cl::init(true),
24 cl::desc("Always use $gp as the global base register."));
26 // class MipsCallEntry.
27 MipsCallEntry::MipsCallEntry(StringRef N) {
34 MipsCallEntry::MipsCallEntry(const GlobalValue *V) {
40 bool MipsCallEntry::isConstant(const MachineFrameInfo *) const {
44 bool MipsCallEntry::isAliased(const MachineFrameInfo *) const {
48 bool MipsCallEntry::mayAlias(const MachineFrameInfo *) const {
52 void MipsCallEntry::printCustom(raw_ostream &O) const {
53 O << "MipsCallEntry: ";
62 MipsFunctionInfo::~MipsFunctionInfo() {
63 for (StringMap<const MipsCallEntry *>::iterator
64 I = ExternalCallEntries.begin(), E = ExternalCallEntries.end(); I != E;
68 for (const auto &Entry : GlobalCallEntries)
72 bool MipsFunctionInfo::globalBaseRegSet() const {
76 unsigned MipsFunctionInfo::getGlobalBaseReg() {
77 // Return if it has already been initialized.
81 const MipsSubtarget &ST = MF.getTarget().getSubtarget<MipsSubtarget>();
83 const TargetRegisterClass *RC =
84 ST.inMips16Mode() ? &Mips::CPU16RegsRegClass
85 : ST.isABI_N64() ? &Mips::GPR64RegClass
86 : &Mips::GPR32RegClass;
87 return GlobalBaseReg = MF.getRegInfo().createVirtualRegister(RC);
90 bool MipsFunctionInfo::mips16SPAliasRegSet() const {
91 return Mips16SPAliasReg;
93 unsigned MipsFunctionInfo::getMips16SPAliasReg() {
94 // Return if it has already been initialized.
96 return Mips16SPAliasReg;
98 const TargetRegisterClass *RC = &Mips::CPU16RegsRegClass;
99 return Mips16SPAliasReg = MF.getRegInfo().createVirtualRegister(RC);
102 void MipsFunctionInfo::createEhDataRegsFI() {
103 for (int I = 0; I < 4; ++I) {
104 const MipsSubtarget &ST = MF.getTarget().getSubtarget<MipsSubtarget>();
105 const TargetRegisterClass *RC = ST.isABI_N64() ?
106 &Mips::GPR64RegClass : &Mips::GPR32RegClass;
108 EhDataRegFI[I] = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
109 RC->getAlignment(), false);
113 bool MipsFunctionInfo::isEhDataRegFI(int FI) const {
114 return CallsEhReturn && (FI == EhDataRegFI[0] || FI == EhDataRegFI[1]
115 || FI == EhDataRegFI[2] || FI == EhDataRegFI[3]);
118 MachinePointerInfo MipsFunctionInfo::callPtrInfo(StringRef Name) {
119 const MipsCallEntry *&E = ExternalCallEntries[Name];
122 E = new MipsCallEntry(Name);
124 return MachinePointerInfo(E);
127 MachinePointerInfo MipsFunctionInfo::callPtrInfo(const GlobalValue *Val) {
128 const MipsCallEntry *&E = GlobalCallEntries[Val];
131 E = new MipsCallEntry(Val);
133 return MachinePointerInfo(E);
136 int MipsFunctionInfo::getMoveF64ViaSpillFI(const TargetRegisterClass *RC) {
137 if (MoveF64ViaSpillFI == -1) {
138 MoveF64ViaSpillFI = MF.getFrameInfo()->CreateStackObject(
139 RC->getSize(), RC->getAlignment(), false);
141 return MoveF64ViaSpillFI;
144 void MipsFunctionInfo::anchor() { }