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| author | Jan Voung <jvoung@gmail.com> | 2024-04-30 09:26:09 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-04-30 06:26:09 -0700 |
| commit | adabdc12f995b0af74c866201899e738796d0d5e (patch) | |
| tree | 3853c1eee1bd47fe14a942d9d83101391752f2df /lldb/packages/Python/lldbsuite/test/lldbbench.py | |
| parent | e50a857fb16bcfe7cfc99bf87db620bc82d1cff5 (diff) | |
| download | llvm-adabdc12f995b0af74c866201899e738796d0d5e.zip llvm-adabdc12f995b0af74c866201899e738796d0d5e.tar.gz llvm-adabdc12f995b0af74c866201899e738796d0d5e.tar.bz2 | |
Use an abbrev to reduce size of VALUE_GUID records in ThinLTO summaries (#90497)
GUID often have content in the higher bits of a 64-bit entry so using
the unabbrev encoding is inefficient (lots of VBR control bits).
Instead, use an abbrev with two 32-bit fixed width chunks.
The abbrev also helps encode the "count" in one place instead of
in every record.
Reduces size of distributed backend summary files by 8.7% in one
example app.
Co-authored-by: Jan Voung <jvoung@google.com>
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/lldbbench.py')
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