llvm-cov: Removed output to STDOUT/specified file.

Instead of asking the user to specify a single file to output coverage
info and defaulting to STDOUT, llvm-cov now creates files for each
source file with a naming system of: <source filename> + ".llcov".

This is what gcov does and although it can clutter the working directory
with numerous coverage files, it will be easier to hook the llvm-cov
output to tools which operate on this assumption (such as lcov).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196184 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/IR/GCOV.cpp b/lib/IR/GCOV.cpp
index bcc62b11d5..394c683cee 100644
--- a/lib/IR/GCOV.cpp
+++ b/lib/IR/GCOV.cpp
@@ -317,8 +317,7 @@ void GCOVBlock::dump() const {
 // FileInfo implementation.
 
 /// print -  Print source files with collected line count information.
-void FileInfo::print(raw_fd_ostream &OS, StringRef gcnoFile,
-                     StringRef gcdaFile) const {
+void FileInfo::print(StringRef gcnoFile, StringRef gcdaFile) const {
   for (StringMap<LineData>::const_iterator I = LineInfo.begin(),
          E = LineInfo.end(); I != E; ++I) {
     StringRef Filename = I->first();
@@ -329,6 +328,12 @@ void FileInfo::print(raw_fd_ostream &OS, StringRef gcnoFile,
     }
     StringRef AllLines = Buff->getBuffer();
 
+    std::string CovFilename = Filename.str() + ".llcov";
+    std::string ErrorInfo;
+    raw_fd_ostream OS(CovFilename.c_str(), ErrorInfo);
+    if (!ErrorInfo.empty())
+      errs() << ErrorInfo << "\n";
+
     OS << "        -:    0:Source:" << Filename << "\n";
     OS << "        -:    0:Graph:" << gcnoFile << "\n";
     OS << "        -:    0:Data:" << gcdaFile << "\n";