Landing: f941d0491edf

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Project / Subsystem

gcc / risc-v

Date

2026-01-13

Author

Pan Li

Commit

f941d0491edf6704b2fdd9eb9ff37516b5bd74ed

Source

github

Perf win

No

Breaking

No

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All attributes

project: gcc
subsystem: risc-v
patch_id: —
commit_hash: f941d0491edf6704b2fdd9eb9ff37516b5bd74ed
source_type: github
headline: RISC-V: Add test for vec_duplicate + vmsle.vv combine with GR2VR cost 0, 1 and 15
tldr: Added new tests with assembly checks for RISC-V vectorization combining vec_duplicate and vmsle.vv into vmsle.vx, covering various GR2VR costs.
author: Pan Li
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • risc-v
• vectorization
• rvv
• testing
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/f941d0491edf6704b2fdd9eb9ff37516b5bd74ed
date: 2026-01-13T00:00:00.000Z

This commit adds new tests for RISC-V vectorization, specifically focusing on the combination of vec_duplicate and vmsle.vv instructions into a single vmsle.vx instruction. The tests include assembly checks to verify the correct code generation. The tests cover different costs associated with moving data from general-purpose registers to vector registers (GR2VR), which influences the compiler’s decision to perform this optimization. This ensures that the combination works as expected across a range of scenarios.