Landing: d58044c97ef8

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Project / Subsystem

gcc / gcc/risc-v

Date

2026-04-28

Author

Jiawei

Commit

d58044c97ef8b5ecd490fd897fa086028053e4a2

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc/risc-v
patch_id: —
commit_hash: d58044c97ef8b5ecd490fd897fa086028053e4a2
source_type: github
headline: RISC-V: Support Zalasr extension.
tldr: GCC now supports the RISC-V Zalasr extension for load-acquire/store-release operations, improving synchronization primitives.
author: Jiawei
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • risc-v
• zalasr
• extension
• atomic operations
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/d58044c97ef8b5ecd490fd897fa086028053e4a2
date: 2026-04-28T00:00:00.000Z

This commit adds support for the RISC-V Zalasr extension, which introduces new instructions for load-acquire and store-release operations. This extension provides more efficient synchronization primitives for multithreaded programming. The patch includes updates to the compiler, documentation, and testsuite to incorporate the new extension.