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| author | Kazu Hirata <kazu@google.com> | 2024-03-21 11:17:52 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-03-21 11:17:52 -0700 |
| commit | f5ef9bd26d531d104f44f9e5b283bd2f80c024be (patch) | |
| tree | 27d50478be2c77567fad184e4b33cbe7a4d0863a /llvm/lib/ProfileData | |
| parent | 796efa8cd5800a42eb8362564be64f3d72512a05 (diff) | |
| download | llvm-f5ef9bd26d531d104f44f9e5b283bd2f80c024be.zip llvm-f5ef9bd26d531d104f44f9e5b283bd2f80c024be.tar.gz llvm-f5ef9bd26d531d104f44f9e5b283bd2f80c024be.tar.bz2 | |
[memprof] Call SmallVector::reserve (#86055)
With one raw memprof file I have, NumPCs averages about 41. Given the
default number of inline elements being 8 for SmallVector<uint64_t>,
we should reserve the storage in advance.
Diffstat (limited to 'llvm/lib/ProfileData')
| -rw-r--r-- | llvm/lib/ProfileData/RawMemProfReader.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/ProfileData/RawMemProfReader.cpp b/llvm/lib/ProfileData/RawMemProfReader.cpp index 0e2b866..60c37c4 100644 --- a/llvm/lib/ProfileData/RawMemProfReader.cpp +++ b/llvm/lib/ProfileData/RawMemProfReader.cpp @@ -127,6 +127,7 @@ CallStackMap readStackInfo(const char *Ptr) { endian::readNext<uint64_t, llvm::endianness::little, unaligned>(Ptr); SmallVector<uint64_t> CallStack; + CallStack.reserve(NumPCs); for (uint64_t J = 0; J < NumPCs; J++) { CallStack.push_back( endian::readNext<uint64_t, llvm::endianness::little, unaligned>(Ptr)); |