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
|
//===--- ProfileList.h - ProfileList filter ---------------------*- 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
//
//===----------------------------------------------------------------------===//
//
// User-provided filters include/exclude profile instrumentation in certain
// functions or files.
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/ProfileList.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/Support/SpecialCaseList.h"
#include "llvm/Support/raw_ostream.h"
#include <optional>
using namespace clang;
namespace clang {
class ProfileSpecialCaseList : public llvm::SpecialCaseList {
public:
static std::unique_ptr<ProfileSpecialCaseList>
create(const std::vector<std::string> &Paths, llvm::vfs::FileSystem &VFS,
std::string &Error);
static std::unique_ptr<ProfileSpecialCaseList>
createOrDie(const std::vector<std::string> &Paths,
llvm::vfs::FileSystem &VFS);
bool isEmpty() const { return Sections.empty(); }
bool hasPrefix(StringRef Prefix) const {
for (auto &SectionIter : Sections)
if (SectionIter.Entries.count(Prefix) > 0)
return true;
return false;
}
};
std::unique_ptr<ProfileSpecialCaseList>
ProfileSpecialCaseList::create(const std::vector<std::string> &Paths,
llvm::vfs::FileSystem &VFS,
std::string &Error) {
auto PSCL = std::make_unique<ProfileSpecialCaseList>();
if (PSCL->createInternal(Paths, VFS, Error))
return PSCL;
return nullptr;
}
std::unique_ptr<ProfileSpecialCaseList>
ProfileSpecialCaseList::createOrDie(const std::vector<std::string> &Paths,
llvm::vfs::FileSystem &VFS) {
std::string Error;
if (auto PSCL = create(Paths, VFS, Error))
return PSCL;
llvm::report_fatal_error(llvm::Twine(Error));
}
}
ProfileList::ProfileList(ArrayRef<std::string> Paths, SourceManager &SM)
: SCL(ProfileSpecialCaseList::createOrDie(
Paths, SM.getFileManager().getVirtualFileSystem())),
Empty(SCL->isEmpty()), SM(SM) {}
ProfileList::~ProfileList() = default;
static StringRef getSectionName(CodeGenOptions::ProfileInstrKind Kind) {
switch (Kind) {
case CodeGenOptions::ProfileNone:
return "";
case CodeGenOptions::ProfileClangInstr:
return "clang";
case CodeGenOptions::ProfileIRInstr:
return "llvm";
case CodeGenOptions::ProfileCSIRInstr:
return "csllvm";
}
llvm_unreachable("Unhandled CodeGenOptions::ProfileInstrKind enum");
}
ProfileList::ExclusionType
ProfileList::getDefault(CodeGenOptions::ProfileInstrKind Kind) const {
StringRef Section = getSectionName(Kind);
// Check for "default:<type>"
if (SCL->inSection(Section, "default", "allow"))
return Allow;
if (SCL->inSection(Section, "default", "skip"))
return Skip;
if (SCL->inSection(Section, "default", "forbid"))
return Forbid;
// If any cases use "fun" or "src", set the default to FORBID.
if (SCL->hasPrefix("fun") || SCL->hasPrefix("src"))
return Forbid;
return Allow;
}
std::optional<ProfileList::ExclusionType>
ProfileList::inSection(StringRef Section, StringRef Prefix,
StringRef Query) const {
if (SCL->inSection(Section, Prefix, Query, "allow"))
return Allow;
if (SCL->inSection(Section, Prefix, Query, "skip"))
return Skip;
if (SCL->inSection(Section, Prefix, Query, "forbid"))
return Forbid;
if (SCL->inSection(Section, Prefix, Query))
return Allow;
return std::nullopt;
}
std::optional<ProfileList::ExclusionType>
ProfileList::isFunctionExcluded(StringRef FunctionName,
CodeGenOptions::ProfileInstrKind Kind) const {
StringRef Section = getSectionName(Kind);
// Check for "function:<regex>=<case>"
if (auto V = inSection(Section, "function", FunctionName))
return V;
if (SCL->inSection(Section, "!fun", FunctionName))
return Forbid;
if (SCL->inSection(Section, "fun", FunctionName))
return Allow;
return std::nullopt;
}
std::optional<ProfileList::ExclusionType>
ProfileList::isLocationExcluded(SourceLocation Loc,
CodeGenOptions::ProfileInstrKind Kind) const {
return isFileExcluded(SM.getFilename(SM.getFileLoc(Loc)), Kind);
}
std::optional<ProfileList::ExclusionType>
ProfileList::isFileExcluded(StringRef FileName,
CodeGenOptions::ProfileInstrKind Kind) const {
StringRef Section = getSectionName(Kind);
// Check for "source:<regex>=<case>"
if (auto V = inSection(Section, "source", FileName))
return V;
if (SCL->inSection(Section, "!src", FileName))
return Forbid;
if (SCL->inSection(Section, "src", FileName))
return Allow;
return std::nullopt;
}
|
