Landing: b1987874feea
Project / Subsystem
gcc / risc-v
Date
2026-05-05
Author
Pan Li
Commit
b1987874feead5e98f1ea005bd1ce5ff515eda7a
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- risc-v
- patch_id
- —
- commit_hash
- b1987874feead5e98f1ea005bd1ce5ff515eda7a
- source_type
- github
- headline
- RISC-V: Add test for vec_duplicate and vmsgt.vv combine
- tldr
- This commit adds a new test case to verify the combining of vec_duplicate and vmsgt.vv instructions into vmsgt.vx on RISC-V.
- author
- Pan Li
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • risc-v
- • vectorization
- • optimization
- • testing
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-05-05T00:00:00.000Z
This commit adds a new test case for the RISC-V vector extension to verify the combination of vec_duplicate and vmsgt.vv instructions into a single vmsgt.vx instruction. The test checks the generated assembly code when the cost of moving data from a general-purpose register to a vector register (GR2VR) is 0, 1, and 15. This ensures that the compiler correctly performs this optimization under different cost scenarios.