diff options
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
| -rw-r--r-- | llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp index 9c65eecad81..ae1f98f0fd6 100644 --- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp @@ -107,7 +107,12 @@ class BitcodeReaderMetadataList { bool AnyFwdRefs; unsigned MinFwdRef; unsigned MaxFwdRef; - std::vector<TrackingMDRef> MetadataPtrs; + + /// Array of metadata references. + /// + /// Don't use std::vector here. Some versions of libc++ copy (instead of + /// move) on resize, and TrackingMDRef is very expensive to copy. + SmallVector<TrackingMDRef, 1> MetadataPtrs; LLVMContext &Context; public: |
