Landing: b085ae4b49b4
Project / Subsystem
gcc / gcc/x86
Date
2026-08-25
Author
Roger Sayle
Commit
b085ae4b49b41e146c0a6a6c16c8c588438b9528
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/x86
- patch_id
- —
- commit_hash
- b085ae4b49b41e146c0a6a6c16c8c588438b9528
- source_type
- github
- headline
- RTL simplifications improve x86 complex argument passing.
- tldr
- Optimized generation of RTL for passing complex values on x86.
- author
- Roger Sayle
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • x86
- • optimization
- • compiler
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-25T00:00:00.000Z
This change introduces RTL simplifications to simplify-rtx.cc to address inefficient passing of complex values on x86. The optimization resolves a bug where the compiler generated spurious instructions for assignments involving complex float types. The new RTL simplifies the code generation, producing more optimal assembly.