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
153
154
155
156
157
158
159
|
//===-- DebugLoc.cpp - Implement DebugLoc class ---------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/DebugLoc.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/DebugInfo.h"
using namespace llvm;
//===----------------------------------------------------------------------===//
// DebugLoc Implementation
//===----------------------------------------------------------------------===//
DebugLoc::DebugLoc(const DILocation *L) : Loc(const_cast<DILocation *>(L)) {}
DebugLoc::DebugLoc(const MDNode *L) : Loc(const_cast<MDNode *>(L)) {}
DILocation *DebugLoc::get() const {
return cast_or_null<DILocation>(Loc.get());
}
unsigned DebugLoc::getLine() const {
assert(get() && "Expected valid DebugLoc");
return get()->getLine();
}
unsigned DebugLoc::getCol() const {
assert(get() && "Expected valid DebugLoc");
return get()->getColumn();
}
MDNode *DebugLoc::getScope() const {
assert(get() && "Expected valid DebugLoc");
return get()->getScope();
}
DILocation *DebugLoc::getInlinedAt() const {
assert(get() && "Expected valid DebugLoc");
return get()->getInlinedAt();
}
MDNode *DebugLoc::getInlinedAtScope() const {
return cast<DILocation>(Loc)->getInlinedAtScope();
}
DebugLoc DebugLoc::getFnDebugLoc() const {
// FIXME: Add a method on \a DILocation that does this work.
const MDNode *Scope = getInlinedAtScope();
if (auto *SP = getDISubprogram(Scope))
return DILocation::get(SP->getContext(), SP->getScopeLine(), 0, SP);
return DebugLoc();
}
bool DebugLoc::isImplicitCode() const {
if (DILocation *Loc = get()) {
return Loc->isImplicitCode();
}
return true;
}
void DebugLoc::setImplicitCode(bool ImplicitCode) {
if (DILocation *Loc = get()) {
Loc->setImplicitCode(ImplicitCode);
}
}
DebugLoc DebugLoc::replaceInlinedAtSubprogram(
const DebugLoc &RootLoc, DISubprogram &NewSP, LLVMContext &Ctx,
DenseMap<const MDNode *, MDNode *> &Cache) {
SmallVector<DILocation *> LocChain;
DILocation *CachedResult = nullptr;
// Collect the inline chain, stopping if we find a location that has already
// been processed.
for (DILocation *Loc = RootLoc; Loc; Loc = Loc->getInlinedAt()) {
if (auto It = Cache.find(Loc); It != Cache.end()) {
CachedResult = cast<DILocation>(It->second);
break;
}
LocChain.push_back(Loc);
}
DILocation *UpdatedLoc = CachedResult;
if (!UpdatedLoc) {
// If no cache hits, then back() is the end of the inline chain, that is,
// the DILocation whose scope ends in the Subprogram to be replaced.
DILocation *LocToUpdate = LocChain.pop_back_val();
DIScope *NewScope = DILocalScope::cloneScopeForSubprogram(
*LocToUpdate->getScope(), NewSP, Ctx, Cache);
UpdatedLoc = DILocation::get(Ctx, LocToUpdate->getLine(),
LocToUpdate->getColumn(), NewScope);
Cache[LocToUpdate] = UpdatedLoc;
}
// Recreate the location chain, bottom-up, starting at the new scope (or a
// cached result).
for (const DILocation *LocToUpdate : reverse(LocChain)) {
UpdatedLoc =
DILocation::get(Ctx, LocToUpdate->getLine(), LocToUpdate->getColumn(),
LocToUpdate->getScope(), UpdatedLoc);
Cache[LocToUpdate] = UpdatedLoc;
}
return UpdatedLoc;
}
DebugLoc DebugLoc::appendInlinedAt(const DebugLoc &DL, DILocation *InlinedAt,
LLVMContext &Ctx,
DenseMap<const MDNode *, MDNode *> &Cache) {
SmallVector<DILocation *, 3> InlinedAtLocations;
DILocation *Last = InlinedAt;
DILocation *CurInlinedAt = DL;
// Gather all the inlined-at nodes.
while (DILocation *IA = CurInlinedAt->getInlinedAt()) {
// Skip any we've already built nodes for.
if (auto *Found = Cache[IA]) {
Last = cast<DILocation>(Found);
break;
}
InlinedAtLocations.push_back(IA);
CurInlinedAt = IA;
}
// Starting from the top, rebuild the nodes to point to the new inlined-at
// location (then rebuilding the rest of the chain behind it) and update the
// map of already-constructed inlined-at nodes.
for (const DILocation *MD : reverse(InlinedAtLocations))
Cache[MD] = Last = DILocation::getDistinct(
Ctx, MD->getLine(), MD->getColumn(), MD->getScope(), Last);
return Last;
}
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
LLVM_DUMP_METHOD void DebugLoc::dump() const { print(dbgs()); }
#endif
void DebugLoc::print(raw_ostream &OS) const {
if (!Loc)
return;
// Print source line info.
auto *Scope = cast<DIScope>(getScope());
OS << Scope->getFilename();
OS << ':' << getLine();
if (getCol() != 0)
OS << ':' << getCol();
if (DebugLoc InlinedAtDL = getInlinedAt()) {
OS << " @[ ";
InlinedAtDL.print(OS);
OS << " ]";
}
}
|
