Landing: 7624176826db
Project / Subsystem
gcc / gcc/vectorization
Date
2026-04-29
Author
Richard Biener
Commit
7624176826db62a3918a9703368dfddc1ef2c4c0
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/vectorization
- patch_id
- —
- commit_hash
- 7624176826db62a3918a9703368dfddc1ef2c4c0
- source_type
- github
- headline
- Disable epilogue vectorization for certain x86 shift tests.
- tldr
- Epilogue vectorization is temporarily disabled for specific x86 shift tests to ensure consistent pass/fail results with varying cost comparison settings.
- author
- Richard Biener
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • gcc
- • vectorization
- • x86
- • testing
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-04-29T00:00:00.000Z
Epilogue vectorization has been disabled for specific gcc.target/i386/shift-gf2p8affine-?.c tests. This change ensures that these tests pass consistently, regardless of the value of the ix86-vect-compare-costs parameter. This avoids failures that arise due to variations in cost estimation for epilogue vectorization.