diff options
Diffstat (limited to 'llvm/tools/llvm-profdata/llvm-profdata.cpp')
| -rw-r--r-- | llvm/tools/llvm-profdata/llvm-profdata.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/tools/llvm-profdata/llvm-profdata.cpp b/llvm/tools/llvm-profdata/llvm-profdata.cpp index eee242107da..8e21a7a9b4f 100644 --- a/llvm/tools/llvm-profdata/llvm-profdata.cpp +++ b/llvm/tools/llvm-profdata/llvm-profdata.cpp @@ -211,8 +211,8 @@ static void mergeInstrProfile(const WeightedFileVector &Inputs, // If NumThreads is not specified, auto-detect a good default. if (NumThreads == 0) - NumThreads = std::max(1U, std::min(std::thread::hardware_concurrency(), - unsigned(Inputs.size() / 2))); + NumThreads = + std::min(hardware_concurrency(), unsigned((Inputs.size() + 1) / 2)); // Initialize the writer contexts. SmallVector<std::unique_ptr<WriterContext>, 4> Contexts; |
