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
146
147
148
149
150
151
152
|
//===-- llvm/CodeGen/PseudoSourceValue.cpp ----------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the PseudoSourceValue class.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
static const char *const PSVNames[] = {
"Stack", "GOT", "JumpTable", "ConstantPool", "FixedStack",
"GlobalValueCallEntry", "ExternalSymbolCallEntry"};
PseudoSourceValue::PseudoSourceValue(unsigned Kind, const TargetInstrInfo &TII)
: Kind(Kind) {
AddressSpace = TII.getAddressSpaceForPseudoSourceKind(Kind);
}
PseudoSourceValue::~PseudoSourceValue() {}
void PseudoSourceValue::printCustom(raw_ostream &O) const {
if (Kind < TargetCustom)
O << PSVNames[Kind];
else
O << "TargetCustom" << Kind;
}
bool PseudoSourceValue::isConstant(const MachineFrameInfo *) const {
if (isStack())
return false;
if (isGOT() || isConstantPool() || isJumpTable())
return true;
llvm_unreachable("Unknown PseudoSourceValue!");
}
bool PseudoSourceValue::isAliased(const MachineFrameInfo *) const {
if (isStack() || isGOT() || isConstantPool() || isJumpTable())
return false;
llvm_unreachable("Unknown PseudoSourceValue!");
}
bool PseudoSourceValue::mayAlias(const MachineFrameInfo *) const {
return !(isGOT() || isConstantPool() || isJumpTable());
}
bool FixedStackPseudoSourceValue::isConstant(
const MachineFrameInfo *MFI) const {
return MFI && MFI->isImmutableObjectIndex(FI);
}
bool FixedStackPseudoSourceValue::isAliased(const MachineFrameInfo *MFI) const {
if (!MFI)
return true;
return MFI->isAliasedObjectIndex(FI);
}
bool FixedStackPseudoSourceValue::mayAlias(const MachineFrameInfo *MFI) const {
if (!MFI)
return true;
// Spill slots will not alias any LLVM IR value.
return !MFI->isSpillSlotObjectIndex(FI);
}
void FixedStackPseudoSourceValue::printCustom(raw_ostream &OS) const {
OS << "FixedStack" << FI;
}
CallEntryPseudoSourceValue::CallEntryPseudoSourceValue(
unsigned Kind, const TargetInstrInfo &TII)
: PseudoSourceValue(Kind, TII) {}
bool CallEntryPseudoSourceValue::isConstant(const MachineFrameInfo *) const {
return false;
}
bool CallEntryPseudoSourceValue::isAliased(const MachineFrameInfo *) const {
return false;
}
bool CallEntryPseudoSourceValue::mayAlias(const MachineFrameInfo *) const {
return false;
}
GlobalValuePseudoSourceValue::GlobalValuePseudoSourceValue(
const GlobalValue *GV,
const TargetInstrInfo &TII)
: CallEntryPseudoSourceValue(GlobalValueCallEntry, TII), GV(GV) {}
ExternalSymbolPseudoSourceValue::ExternalSymbolPseudoSourceValue(
const char *ES, const TargetInstrInfo &TII)
: CallEntryPseudoSourceValue(ExternalSymbolCallEntry, TII), ES(ES) {}
PseudoSourceValueManager::PseudoSourceValueManager(
const TargetInstrInfo &TIInfo)
: TII(TIInfo),
StackPSV(PseudoSourceValue::Stack, TII),
GOTPSV(PseudoSourceValue::GOT, TII),
JumpTablePSV(PseudoSourceValue::JumpTable, TII),
ConstantPoolPSV(PseudoSourceValue::ConstantPool, TII) {}
const PseudoSourceValue *PseudoSourceValueManager::getStack() {
return &StackPSV;
}
const PseudoSourceValue *PseudoSourceValueManager::getGOT() { return &GOTPSV; }
const PseudoSourceValue *PseudoSourceValueManager::getConstantPool() {
return &ConstantPoolPSV;
}
const PseudoSourceValue *PseudoSourceValueManager::getJumpTable() {
return &JumpTablePSV;
}
const PseudoSourceValue *
PseudoSourceValueManager::getFixedStack(int FI) {
std::unique_ptr<FixedStackPseudoSourceValue> &V = FSValues[FI];
if (!V)
V = std::make_unique<FixedStackPseudoSourceValue>(FI, TII);
return V.get();
}
const PseudoSourceValue *
PseudoSourceValueManager::getGlobalValueCallEntry(const GlobalValue *GV) {
std::unique_ptr<const GlobalValuePseudoSourceValue> &E =
GlobalCallEntries[GV];
if (!E)
E = std::make_unique<GlobalValuePseudoSourceValue>(GV, TII);
return E.get();
}
const PseudoSourceValue *
PseudoSourceValueManager::getExternalSymbolCallEntry(const char *ES) {
std::unique_ptr<const ExternalSymbolPseudoSourceValue> &E =
ExternalCallEntries[ES];
if (!E)
E = std::make_unique<ExternalSymbolPseudoSourceValue>(ES, TII);
return E.get();
}
|