blob: 0d1ee046f0dcae745f4141ef713ac9aae154d741 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
//===-- 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 "MCTargetDesc/MipsBaseInfo.h"
#include "MipsInstrInfo.h"
#include "MipsMachineFunction.h"
#include "MipsSubtarget.h"
#include "MipsTargetMachine.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/IR/Function.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/raw_ostream.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."));
// class MipsCallEntry.
MipsCallEntry::MipsCallEntry(StringRef N) {
#ifndef NDEBUG
Name = N;
Val = nullptr;
#endif
}
MipsCallEntry::MipsCallEntry(const GlobalValue *V) {
#ifndef NDEBUG
Val = V;
#endif
}
bool MipsCallEntry::isConstant(const MachineFrameInfo *) const {
return false;
}
bool MipsCallEntry::isAliased(const MachineFrameInfo *) const {
return false;
}
bool MipsCallEntry::mayAlias(const MachineFrameInfo *) const {
return false;
}
void MipsCallEntry::printCustom(raw_ostream &O) const {
O << "MipsCallEntry: ";
#ifndef NDEBUG
if (Val)
O << Val->getName();
else
O << Name;
#endif
}
MipsFunctionInfo::~MipsFunctionInfo() {}
bool MipsFunctionInfo::globalBaseRegSet() const {
return GlobalBaseReg;
}
unsigned MipsFunctionInfo::getGlobalBaseReg() {
// Return if it has already been initialized.
if (GlobalBaseReg)
return GlobalBaseReg;
MipsSubtarget const &STI =
static_cast<const MipsSubtarget &>(MF.getSubtarget());
const TargetRegisterClass *RC =
STI.inMips16Mode()
? &Mips::CPU16RegsRegClass
: STI.inMicroMipsMode()
? &Mips::GPRMM16RegClass
: static_cast<const MipsTargetMachine &>(MF.getTarget())
.getABI()
.IsN64()
? &Mips::GPR64RegClass
: &Mips::GPR32RegClass;
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 = &Mips::CPU16RegsRegClass;
return Mips16SPAliasReg = MF.getRegInfo().createVirtualRegister(RC);
}
void MipsFunctionInfo::createEhDataRegsFI() {
for (int I = 0; I < 4; ++I) {
const TargetRegisterClass *RC =
static_cast<const MipsTargetMachine &>(MF.getTarget()).getABI().IsN64()
? &Mips::GPR64RegClass
: &Mips::GPR32RegClass;
EhDataRegFI[I] = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
RC->getAlignment(), false);
}
}
bool MipsFunctionInfo::isEhDataRegFI(int FI) const {
return CallsEhReturn && (FI == EhDataRegFI[0] || FI == EhDataRegFI[1]
|| FI == EhDataRegFI[2] || FI == EhDataRegFI[3]);
}
MachinePointerInfo MipsFunctionInfo::callPtrInfo(StringRef Name) {
std::unique_ptr<const MipsCallEntry> &E = ExternalCallEntries[Name];
if (!E)
E = llvm::make_unique<MipsCallEntry>(Name);
return MachinePointerInfo(E.get());
}
MachinePointerInfo MipsFunctionInfo::callPtrInfo(const GlobalValue *Val) {
std::unique_ptr<const MipsCallEntry> &E = GlobalCallEntries[Val];
if (!E)
E = llvm::make_unique<MipsCallEntry>(Val);
return MachinePointerInfo(E.get());
}
int MipsFunctionInfo::getMoveF64ViaSpillFI(const TargetRegisterClass *RC) {
if (MoveF64ViaSpillFI == -1) {
MoveF64ViaSpillFI = MF.getFrameInfo()->CreateStackObject(
RC->getSize(), RC->getAlignment(), false);
}
return MoveF64ViaSpillFI;
}
void MipsFunctionInfo::anchor() { }
|
