Landing: 1da58c266672
Project / Subsystem
gcc / rs6000
Date
2026-09-09
Author
Manjunath S Matti
Commit
1da58c266672702c7750759d69189bd0fd750096
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- rs6000
- patch_id
- —
- commit_hash
- 1da58c266672702c7750759d69189bd0fd750096
- source_type
- github
- headline
- rs6000: Fix mma-double-test.c on big endian
- tldr
- Corrects a test case for PowerPC MMA instructions on big-endian systems.
- author
- Manjunath S Matti
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • powerpc
- • testing
- • endianness
- discussion_id_link
- github:gcc-mirror/gcc#126866
- bugzilla_pr
- —
- date
- 2026-09-09T00:00:00.000Z
The mma-double-test.c test case for GCC’s rs6000 backend failed on big-endian PowerPC systems due to an incorrect order of arguments passed to the __builtin_mma_assemble_pair intrinsic. This commit fixes the test by swapping the vector arguments when running in big-endian mode, ensuring the test accurately reflects the behavior of matrix multiply-accumulate operations on that architecture.