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| author | Dan Gohman <gohman@apple.com> | 2010-05-19 01:21:34 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-05-19 01:21:34 +0000 |
| commit | 86026cd24eb8bdffdd6cf94669f98baeb87d8ef3 (patch) | |
| tree | df44b747fc48f45b1a481849d02fb701f4c80d05 /lib/Support/Timer.cpp | |
| parent | 0a942dbb1e0f303191639498c35e742309f08a64 (diff) | |
| download | llvm-86026cd24eb8bdffdd6cf94669f98baeb87d8ef3.tar.gz llvm-86026cd24eb8bdffdd6cf94669f98baeb87d8ef3.tar.bz2 llvm-86026cd24eb8bdffdd6cf94669f98baeb87d8ef3.tar.xz | |
Add a comment explaining why this code uses Append mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104095 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/Timer.cpp')
| -rw-r--r-- | lib/Support/Timer.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Support/Timer.cpp b/lib/Support/Timer.cpp index 481f6ba508..784b77cf59 100644 --- a/lib/Support/Timer.cpp +++ b/lib/Support/Timer.cpp @@ -61,6 +61,10 @@ raw_ostream *llvm::CreateInfoOutputFile() { if (OutputFilename == "-") return new raw_fd_ostream(1, false); // stdout. + // Append mode is used because the info output file is opened and closed + // each time -stats or -time-passes wants to print output to it. To + // compensate for this, the test-suite Makefiles have code to delete the + // info output file before running commands which write to it. std::string Error; raw_ostream *Result = new raw_fd_ostream(OutputFilename.c_str(), Error, raw_fd_ostream::F_Append); |