llvm-6502/tools/llvm-cov/llvm-cov.cpp
Justin Bogner 56d05e468c llvm-cov: Implement --no-output
In gcov, there's a -n/--no-output option, which disables the writing
of any .gcov files, so that it emits only the summary info on stdout.
This implements the same behaviour in llvm-cov.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208148 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-07 02:11:18 +00:00

143 lines
5.9 KiB
C++

//===- 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> LongNames("l", cl::Grouping, cl::init(false),
cl::desc("Prefix filenames with the main file"));
static cl::alias LongNamesA("long-file-names", cl::aliasopt(LongNames));
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<bool> NoOutput("n", cl::Grouping, cl::init(false),
cl::desc("Do not output any .gcov files"));
static cl::alias NoOutputA("no-output", cl::aliasopt(NoOutput));
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, LongNames, NoOutput);
FileInfo FI(Options);
GF.collectLineCounts(FI);
FI.print(SourceFile, InputGCNO, InputGCDA);
return 0;
}