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
| //===- gcov.cpp - GCOV compatible LLVM coverage tool ----------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// llvm-cov is a command line tools to analyze and report coverage information.
//
//===----------------------------------------------------------------------===//
#include "llvm/ProfileData/GCOV.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include <system_error>
using namespace llvm;
static void reportCoverage(StringRef SourceFile, StringRef ObjectDir,
const std::string &InputGCNO,
const std::string &InputGCDA, bool DumpGCOV,
const GCOV::Options &Options) {
SmallString<128> CoverageFileStem(ObjectDir);
if (CoverageFileStem.empty()) {
// If no directory was specified with -o, look next to the source file.
CoverageFileStem = sys::path::parent_path(SourceFile);
sys::path::append(CoverageFileStem, sys::path::stem(SourceFile));
} else if (sys::fs::is_directory(ObjectDir))
// A directory name was given. Use it and the source file name.
sys::path::append(CoverageFileStem, sys::path::stem(SourceFile));
else
// A file was given. Ignore the source file and look next to this file.
sys::path::replace_extension(CoverageFileStem, "");
std::string GCNO = InputGCNO.empty()
? std::string(CoverageFileStem.str()) + ".gcno"
: InputGCNO;
std::string GCDA = InputGCDA.empty()
? std::string(CoverageFileStem.str()) + ".gcda"
: InputGCDA;
GCOVFile GF;
ErrorOr<std::unique_ptr<MemoryBuffer>> GCNO_Buff =
MemoryBuffer::getFileOrSTDIN(GCNO);
if (std::error_code EC = GCNO_Buff.getError()) {
errs() << GCNO << ": " << EC.message() << "\n";
return;
}
GCOVBuffer GCNO_GB(GCNO_Buff.get().get());
if (!GF.readGCNO(GCNO_GB)) {
errs() << "Invalid .gcno File!\n";
return;
}
ErrorOr<std::unique_ptr<MemoryBuffer>> GCDA_Buff =
MemoryBuffer::getFileOrSTDIN(GCDA);
if (std::error_code EC = GCDA_Buff.getError()) {
if (EC != errc::no_such_file_or_directory) {
errs() << GCDA << ": " << EC.message() << "\n";
return;
}
// Clear the filename to make it clear we didn't read anything.
GCDA = "-";
} else {
GCOVBuffer GCDA_GB(GCDA_Buff.get().get());
if (!GF.readGCDA(GCDA_GB)) {
errs() << "Invalid .gcda File!\n";
return;
}
}
if (DumpGCOV)
GF.print(errs());
FileInfo FI(Options);
GF.collectLineCounts(FI);
FI.print(llvm::outs(), SourceFile, GCNO, GCDA);
}
int gcovMain(int argc, const char *argv[]) {
cl::list<std::string> SourceFiles(cl::Positional, cl::OneOrMore,
cl::desc("SOURCEFILE"));
cl::opt<bool> AllBlocks("a", cl::Grouping, cl::init(false),
cl::desc("Display all basic blocks"));
cl::alias AllBlocksA("all-blocks", cl::aliasopt(AllBlocks));
cl::opt<bool> BranchProb("b", cl::Grouping, cl::init(false),
cl::desc("Display branch probabilities"));
cl::alias BranchProbA("branch-probabilities", cl::aliasopt(BranchProb));
cl::opt<bool> BranchCount("c", cl::Grouping, cl::init(false),
cl::desc("Display branch counts instead "
"of percentages (requires -b)"));
cl::alias BranchCountA("branch-counts", cl::aliasopt(BranchCount));
cl::opt<bool> LongNames("l", cl::Grouping, cl::init(false),
cl::desc("Prefix filenames with the main file"));
cl::alias LongNamesA("long-file-names", cl::aliasopt(LongNames));
cl::opt<bool> FuncSummary("f", cl::Grouping, cl::init(false),
cl::desc("Show coverage for each function"));
cl::alias FuncSummaryA("function-summaries", cl::aliasopt(FuncSummary));
cl::opt<bool> NoOutput("n", cl::Grouping, cl::init(false),
cl::desc("Do not output any .gcov files"));
cl::alias NoOutputA("no-output", cl::aliasopt(NoOutput));
cl::opt<std::string> ObjectDir(
"o", cl::value_desc("DIR|FILE"), cl::init(""),
cl::desc("Find objects in DIR or based on FILE's path"));
cl::alias ObjectDirA("object-directory", cl::aliasopt(ObjectDir));
cl::alias ObjectDirB("object-file", cl::aliasopt(ObjectDir));
cl::opt<bool> PreservePaths("p", cl::Grouping, cl::init(false),
cl::desc("Preserve path components"));
cl::alias PreservePathsA("preserve-paths", cl::aliasopt(PreservePaths));
cl::opt<bool> UncondBranch("u", cl::Grouping, cl::init(false),
cl::desc("Display unconditional branch info "
"(requires -b)"));
cl::alias UncondBranchA("unconditional-branches", cl::aliasopt(UncondBranch));
cl::opt<bool> HashFilenames("x", cl::Grouping, cl::init(false),
cl::desc("Hash long pathnames"));
cl::alias HashFilenamesA("hash-filenames", cl::aliasopt(HashFilenames));
cl::OptionCategory DebugCat("Internal and debugging options");
cl::opt<bool> DumpGCOV("dump", cl::init(false), cl::cat(DebugCat),
cl::desc("Dump the gcov file to stderr"));
cl::opt<std::string> InputGCNO("gcno", cl::cat(DebugCat), cl::init(""),
cl::desc("Override inferred gcno file"));
cl::opt<std::string> InputGCDA("gcda", cl::cat(DebugCat), cl::init(""),
cl::desc("Override inferred gcda file"));
cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");
GCOV::Options Options(AllBlocks, BranchProb, BranchCount, FuncSummary,
PreservePaths, UncondBranch, LongNames, NoOutput,
HashFilenames);
for (const auto &SourceFile : SourceFiles)
reportCoverage(SourceFile, ObjectDir, InputGCNO, InputGCDA, DumpGCOV,
Options);
return 0;
}
|