Landing: 60b5fa33ffb4
Project / Subsystem
gcc / gcc/target/rs6000
Date
2026-08-07
Author
Michael Meissner
Commit
60b5fa33ffb46e3d32ad7dfaf58621dd3616d0f3
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/target/rs6000
- patch_id
- —
- commit_hash
- 60b5fa33ffb46e3d32ad7dfaf58621dd3616d0f3
- source_type
- github
- headline
- Add power9/10 float-to-logical optimizations
- tldr
- Optimizes floating-point math library functions on PowerPC by using specialized instructions for float-to-logical conversions.
- author
- Michael Meissner
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • powerpc
- • optimization
- • glibc
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-07T00:00:00.000Z
This commit enhances optimizations for 32-bit floating-point math functions in Glibc on PowerPC processors (power9 and later). It revises how floating-point values are converted to logical representations, leveraging specific vector instructions like XXLAND and XXSPLT to improve efficiency. Previously, these optimizations were present for power8 but regressed for newer architectures.