summaryrefslogtreecommitdiff
path: root/tools/llvm-cov/llvm-cov.cpp
blob: 8e2cf95153d55ffb035deea0ae2a96f6b8ff33a1 (plain)
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
//===- llvm-cov.cpp - LLVM coverage tool ----------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// llvm-cov is a command line tools to analyze and report coverage information.
//
//===----------------------------------------------------------------------===//

#include "llvm/ADT/SmallString.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/GCOV.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryObject.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/system_error.h"
using namespace llvm;

static cl::opt<std::string> SourceFile(cl::Positional, cl::Required,
                                       cl::desc("SOURCEFILE"));

static cl::opt<bool> AllBlocks("a", cl::Grouping, cl::init(false),
                               cl::desc("Display all basic blocks"));
static cl::alias AllBlocksA("all-blocks", cl::aliasopt(AllBlocks));

static cl::opt<bool> BranchProb("b", cl::Grouping, cl::init(false),
                                cl::desc("Display branch probabilities"));
static cl::alias BranchProbA("branch-probabilities", cl::aliasopt(BranchProb));

static cl::opt<bool> BranchCount("c", cl::Grouping, cl::init(false),
                                 cl::desc("Display branch counts instead "
                                           "of percentages (requires -b)"));
static cl::alias BranchCountA("branch-counts", cl::aliasopt(BranchCount));

static cl::opt<bool> FuncSummary("f", cl::Grouping, cl::init(false),
                                 cl::desc("Show coverage for each function"));
static cl::alias FuncSummaryA("function-summaries", cl::aliasopt(FuncSummary));

static 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"));
static cl::alias ObjectDirA("object-directory", cl::aliasopt(ObjectDir));
static cl::alias ObjectDirB("object-file", cl::aliasopt(ObjectDir));

static cl::opt<bool> PreservePaths("p", cl::Grouping, cl::init(false),
                                   cl::desc("Preserve path components"));
static cl::alias PreservePathsA("preserve-paths", cl::aliasopt(PreservePaths));

static cl::opt<bool> UncondBranch("u", cl::Grouping, cl::init(false),
                                  cl::desc("Display unconditional branch info "
                                           "(requires -b)"));
static cl::alias UncondBranchA("unconditional-branches",
                               cl::aliasopt(UncondBranch));

static cl::OptionCategory DebugCat("Internal and debugging options");
static cl::opt<bool> DumpGCOV("dump", cl::init(false), cl::cat(DebugCat),
                              cl::desc("Dump the gcov file to stderr"));
static cl::opt<std::string> InputGCNO("gcno", cl::cat(DebugCat), cl::init(""),
                                      cl::desc("Override inferred gcno file"));
static cl::opt<std::string> InputGCDA("gcda", cl::cat(DebugCat), cl::init(""),
                                      cl::desc("Override inferred gcda file"));

//===----------------------------------------------------------------------===//
int main(int argc, char **argv) {
  // Print a stack trace if we signal out.
  sys::PrintStackTraceOnErrorSignal();
  PrettyStackTraceProgram X(argc, argv);
  llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.

  cl::ParseCommandLineOptions(argc, argv, "LLVM code coverage tool\n");

  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, "");

  if (InputGCNO.empty())
    InputGCNO = (CoverageFileStem.str() + ".gcno").str();
  if (InputGCDA.empty())
    InputGCDA = (CoverageFileStem.str() + ".gcda").str();

  GCOVFile GF;

  std::unique_ptr<MemoryBuffer> GCNO_Buff;
  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCNO, GCNO_Buff)) {
    errs() << InputGCNO << ": " << ec.message() << "\n";
    return 1;
  }
  GCOVBuffer GCNO_GB(GCNO_Buff.get());
  if (!GF.readGCNO(GCNO_GB)) {
    errs() << "Invalid .gcno File!\n";
    return 1;
  }

  std::unique_ptr<MemoryBuffer> GCDA_Buff;
  if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputGCDA, GCDA_Buff)) {
    if (ec != errc::no_such_file_or_directory) {
      errs() << InputGCDA << ": " << ec.message() << "\n";
      return 1;
    }
    // Clear the filename to make it clear we didn't read anything.
    InputGCDA = "-";
  } else {
    GCOVBuffer GCDA_GB(GCDA_Buff.get());
    if (!GF.readGCDA(GCDA_GB)) {
      errs() << "Invalid .gcda File!\n";
      return 1;
    }
  }

  if (DumpGCOV)
    GF.dump();

  GCOVOptions Options(AllBlocks, BranchProb, BranchCount, FuncSummary,
                      PreservePaths, UncondBranch);
  FileInfo FI(Options);
  GF.collectLineCounts(FI);
  FI.print(InputGCNO, InputGCDA);
  return 0;
}