Landing: 333fb2dac903
Project / Subsystem
binutils / binutils/gas
Date
2026-07-24
Author
Jan Beulich <jbeulich@sourceware.org>
Commit
333fb2dac903a18fe87eefa932aa87fc6878b630
Source
public_inbox
Perf win
No
Breaking
No
All attributes
- project
- binutils
- subsystem
- binutils/gas
- patch_id
- —
- commit_hash
- 333fb2dac903a18fe87eefa932aa87fc6878b630
- source_type
- public_inbox
- headline
- x86: Simplify VPBROADCASTQ to VUNPCKLQDQ optimization
- tldr
- Refines the x86 assembler's optimization for VPBROADCASTQ to VUNPCKLQDQ, fixing a condition check.
- author
- Jan Beulich <jbeulich@sourceware.org>
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • x86
- • assembly
- • optimization
- • AVX
- • bugfix
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-07-24T00:00:00.000Z
The x86 assembler’s optimization converting VPBROADCASTQ to VUNPCKLQDQ has been slightly simplified by removing an redundant check on the destination operand’s xmmword property. This change corrects a logic flaw introduced in a previous commit, ensuring the optimization applies correctly.