diff options
Diffstat (limited to 'llvm/tools/llvm-profdata/llvm-profdata.cpp')
| -rw-r--r-- | llvm/tools/llvm-profdata/llvm-profdata.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/llvm/tools/llvm-profdata/llvm-profdata.cpp b/llvm/tools/llvm-profdata/llvm-profdata.cpp index 8400b07..3a7bd06 100644 --- a/llvm/tools/llvm-profdata/llvm-profdata.cpp +++ b/llvm/tools/llvm-profdata/llvm-profdata.cpp @@ -291,6 +291,15 @@ cl::opt<bool> DropProfileSymbolList( cl::desc("Drop the profile symbol list when merging AutoFDO profiles " "(only meaningful for -sample)")); +// Temporary support for writing the previous version of the format, to enable +// some forward compatibility. +// TODO: Consider enabling this with future version changes as well, to ease +// deployment of newer versions of llvm-profdata. +cl::opt<bool> DoWritePrevVersion( + "write-prev-version", cl::init(false), cl::Hidden, + cl::desc("Write the previous version of indexed format, to enable " + "some forward compatibility.")); + // Options specific to overlap subcommand. cl::opt<std::string> BaseFilename(cl::Positional, cl::Required, cl::desc("<base profile file>"), @@ -579,8 +588,8 @@ struct WriterContext { WriterContext(bool IsSparse, std::mutex &ErrLock, SmallSet<instrprof_error, 4> &WriterErrorCodes, uint64_t ReservoirSize = 0, uint64_t MaxTraceLength = 0) - : Writer(IsSparse, ReservoirSize, MaxTraceLength), ErrLock(ErrLock), - WriterErrorCodes(WriterErrorCodes) {} + : Writer(IsSparse, ReservoirSize, MaxTraceLength, DoWritePrevVersion), + ErrLock(ErrLock), WriterErrorCodes(WriterErrorCodes) {} }; /// Computer the overlap b/w profile BaseFilename and TestFileName, |