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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
//===-- cc1gen_reproducer_main.cpp - Clang reproducer generator ----------===//
//
// 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 is the entry point to the clang -cc1gen-reproducer functionality, which
// generates reproducers for invocations for clang-based tools.
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/LLVM.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Support/YAMLTraits.h"
#include "llvm/Support/raw_ostream.h"
using namespace clang;
namespace {
struct UnsavedFileHash {
std::string Name;
std::string MD5;
};
struct ClangInvocationInfo {
std::string Toolchain;
std::string LibclangOperation;
std::string LibclangOptions;
std::vector<std::string> Arguments;
std::vector<std::string> InvocationArguments;
std::vector<UnsavedFileHash> UnsavedFileHashes;
bool Dump = false;
};
} // end anonymous namespace
LLVM_YAML_IS_SEQUENCE_VECTOR(UnsavedFileHash)
namespace llvm {
namespace yaml {
template <> struct MappingTraits<UnsavedFileHash> {
static void mapping(IO &IO, UnsavedFileHash &Info) {
IO.mapRequired("name", Info.Name);
IO.mapRequired("md5", Info.MD5);
}
};
template <> struct MappingTraits<ClangInvocationInfo> {
static void mapping(IO &IO, ClangInvocationInfo &Info) {
IO.mapRequired("toolchain", Info.Toolchain);
IO.mapOptional("libclang.operation", Info.LibclangOperation);
IO.mapOptional("libclang.opts", Info.LibclangOptions);
IO.mapRequired("args", Info.Arguments);
IO.mapOptional("invocation-args", Info.InvocationArguments);
IO.mapOptional("unsaved_file_hashes", Info.UnsavedFileHashes);
}
};
} // end namespace yaml
} // end namespace llvm
static std::string generateReproducerMetaInfo(const ClangInvocationInfo &Info) {
std::string Result;
llvm::raw_string_ostream OS(Result);
OS << '{';
bool NeedComma = false;
auto EmitKey = [&](StringRef Key) {
if (NeedComma)
OS << ", ";
NeedComma = true;
OS << '"' << Key << "\": ";
};
auto EmitStringKey = [&](StringRef Key, StringRef Value) {
if (Value.empty())
return;
EmitKey(Key);
OS << '"' << Value << '"';
};
EmitStringKey("libclang.operation", Info.LibclangOperation);
EmitStringKey("libclang.opts", Info.LibclangOptions);
if (!Info.InvocationArguments.empty()) {
EmitKey("invocation-args");
OS << '[';
for (const auto &Arg : llvm::enumerate(Info.InvocationArguments)) {
if (Arg.index())
OS << ',';
OS << '"' << Arg.value() << '"';
}
OS << ']';
}
OS << '}';
// FIXME: Compare unsaved file hashes and report mismatch in the reproducer.
if (Info.Dump)
llvm::outs() << "REPRODUCER METAINFO: " << OS.str() << "\n";
return std::move(OS.str());
}
/// Generates a reproducer for a set of arguments from a specific invocation.
static llvm::Optional<driver::Driver::CompilationDiagnosticReport>
generateReproducerForInvocationArguments(ArrayRef<const char *> Argv,
const ClangInvocationInfo &Info) {
using namespace driver;
auto TargetAndMode = ToolChain::getTargetAndModeFromProgramName(Argv[0]);
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions;
IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
DiagnosticsEngine Diags(DiagID, &*DiagOpts, new IgnoringDiagConsumer());
ProcessWarningOptions(Diags, *DiagOpts, /*ReportDiags=*/false);
Driver TheDriver(Argv[0], llvm::sys::getDefaultTargetTriple(), Diags);
TheDriver.setTargetAndMode(TargetAndMode);
std::unique_ptr<Compilation> C(TheDriver.BuildCompilation(Argv));
if (C && !C->containsError()) {
for (const auto &J : C->getJobs()) {
if (const Command *Cmd = dyn_cast<Command>(&J)) {
Driver::CompilationDiagnosticReport Report;
TheDriver.generateCompilationDiagnostics(
*C, *Cmd, generateReproducerMetaInfo(Info), &Report);
return Report;
}
}
}
return None;
}
std::string GetExecutablePath(const char *Argv0, bool CanonicalPrefixes);
static void printReproducerInformation(
llvm::raw_ostream &OS, const ClangInvocationInfo &Info,
const driver::Driver::CompilationDiagnosticReport &Report) {
OS << "REPRODUCER:\n";
OS << "{\n";
OS << R"("files":[)";
for (const auto &File : llvm::enumerate(Report.TemporaryFiles)) {
if (File.index())
OS << ',';
OS << '"' << File.value() << '"';
}
OS << "]\n}\n";
}
int cc1gen_reproducer_main(ArrayRef<const char *> Argv, const char *Argv0,
void *MainAddr) {
if (Argv.size() < 1) {
llvm::errs() << "error: missing invocation file\n";
return 1;
}
// Parse the invocation descriptor.
StringRef Input = Argv[0];
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
llvm::MemoryBuffer::getFile(Input, /*IsText=*/true);
if (!Buffer) {
llvm::errs() << "error: failed to read " << Input << ": "
<< Buffer.getError().message() << "\n";
return 1;
}
llvm::yaml::Input YAML(Buffer.get()->getBuffer());
ClangInvocationInfo InvocationInfo;
YAML >> InvocationInfo;
if (Argv.size() > 1 && Argv[1] == StringRef("-v"))
InvocationInfo.Dump = true;
// Create an invocation that will produce the reproducer.
std::vector<const char *> DriverArgs;
for (const auto &Arg : InvocationInfo.Arguments)
DriverArgs.push_back(Arg.c_str());
std::string Path = GetExecutablePath(Argv0, /*CanonicalPrefixes=*/true);
DriverArgs[0] = Path.c_str();
llvm::Optional<driver::Driver::CompilationDiagnosticReport> Report =
generateReproducerForInvocationArguments(DriverArgs, InvocationInfo);
// Emit the information about the reproduce files to stdout.
int Result = 1;
if (Report) {
printReproducerInformation(llvm::outs(), InvocationInfo, *Report);
Result = 0;
}
// Remove the input file.
llvm::sys::fs::remove(Input);
return Result;
}
|
