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author | Yuchen Wu <yuchenericwu@hotmail.com> | 2013-10-25 02:22:21 +0000 |
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committer | Yuchen Wu <yuchenericwu@hotmail.com> | 2013-10-25 02:22:21 +0000 |
commit | 76fa4d629b22903632529e2cb19c86105a0d1247 (patch) | |
tree | 02524980ed7dde2b279b58f870e1a3d22d934863 /lib/IR/GCOV.cpp | |
parent | e034422d2a833ea1e257efe88696b6e93743b042 (diff) | |
download | llvm-76fa4d629b22903632529e2cb19c86105a0d1247.tar.gz llvm-76fa4d629b22903632529e2cb19c86105a0d1247.tar.bz2 llvm-76fa4d629b22903632529e2cb19c86105a0d1247.tar.xz |
Support for reading program counts in llvm-cov.
llvm-cov will now be able to read program counts from the GCDA file and
output it in the same format as gcov. The program summary tag was
identified from gcov-io.h as "\0\0\0\a3".
There is currently a bug in GCOVProfiling.cpp which does not generate
the
run- or program-counting IR, so this change was tested manually by
modifying the GCDA file and comparing the gcov and llvm-cov outputs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193389 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/IR/GCOV.cpp')
-rw-r--r-- | lib/IR/GCOV.cpp | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/lib/IR/GCOV.cpp b/lib/IR/GCOV.cpp index 908523a3a6..fe8ebb2e9a 100644 --- a/lib/IR/GCOV.cpp +++ b/lib/IR/GCOV.cpp @@ -44,21 +44,24 @@ bool GCOVFile::read(GCOVBuffer &Buffer) { if (Format == GCOV::InvalidGCOV) return false; - unsigned i = 0; - while (1) { - GCOVFunction *GFun = NULL; - if (isGCDAFile(Format)) { - // Use existing function while reading .gcda file. - assert(i < Functions.size() && ".gcda data does not match .gcno data"); - GFun = Functions[i]; - } else if (isGCNOFile(Format)) { - GFun = new GCOVFunction(); + if (isGCNOFile(Format)) { + while (true) { + GCOVFunction *GFun = new GCOVFunction(); + if (!GFun->read(Buffer, Format)) + break; Functions.push_back(GFun); } - if (!GFun || !GFun->read(Buffer, Format)) - break; - ++i; } + else if (isGCDAFile(Format)) { + for (size_t i = 0, e = Functions.size(); i < e; ++i) { + bool ReadGCDA = Functions[i]->read(Buffer, Format); + (void)ReadGCDA; + assert(ReadGCDA && ".gcda data does not match .gcno data"); + } + while (Buffer.readProgramTag()) + ++ProgramCount; + } + return true; } @@ -75,6 +78,7 @@ void GCOVFile::collectLineCounts(FileInfo &FI) { for (SmallVectorImpl<GCOVFunction *>::iterator I = Functions.begin(), E = Functions.end(); I != E; ++I) (*I)->collectLineCounts(FI); + FI.setProgramCount(ProgramCount); } //===----------------------------------------------------------------------===// @@ -252,6 +256,7 @@ void FileInfo::print(StringRef gcnoFile, StringRef gcdaFile) { outs() << " -: 0:Source:" << Filename << "\n"; outs() << " -: 0:Graph:" << gcnoFile << "\n"; outs() << " -: 0:Data:" << gcdaFile << "\n"; + outs() << " -: 0:Programs:" << ProgramCount << "\n"; LineCounts &L = LineInfo[Filename]; OwningPtr<MemoryBuffer> Buff; if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) { |