Landing: 392f10be00ec
Project / Subsystem
gcc / c++
Date
2026-05-19
Author
Jason Merrill
Commit
392f10be00ec19d1660d5f56edb26dc7aeb22586
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- c++
- patch_id
- —
- commit_hash
- 392f10be00ec19d1660d5f56edb26dc7aeb22586
- source_type
- github
- headline
- Another constexpr empty class tweak
- tldr
- Improved constexpr handling for empty class types by checking for empty fields during subobject initialization.
- author
- Jason Merrill
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • c++
- • constexpr
- • optimization
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-05-19T00:00:00.000Z
This commit optimizes the handling of constexpr (compile-time constant) empty classes by refining the conditions for omitting subobject constructors. It now checks for empty fields, preventing unnecessary constructor omission for non-potentially-overlapping fields of empty class types. This tweak improves code generation efficiency for constexpr contexts involving empty classes.