Landing: 7cdbbbdecb09

← All landings

Project / Subsystem

gcc / risc-v

Date

2026-08-04

Author

Robin Dapp

Commit

7cdbbbdecb09e518e28c5116b05e0018b9460b95

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: risc-v
patch_id: —
commit_hash: 7cdbbbdecb09e518e28c5116b05e0018b9460b95
source_type: github
headline: RISC-V: Fix single-step expansion.
tldr: Corrects RISC-V single-step instruction expansion by using the correct pattern count.
author: Robin Dapp
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • risc-v
• vectorization
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/7cdbbbdecb09e518e28c5116b05e0018b9460b95
date: 2026-08-04T00:00:00.000Z

This change fixes an issue in the RISC-V vector constant synthesis where an incorrect number of patterns was used for creating intermediate operations. The fix ensures that the ‘npatterns’ from the original vector builder are used, aligning the expansion logic with the intended behavior and resolving a problem reported in PR126550.