Landing: c3aaf80822f2

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Project / Subsystem

gcc / aarch64

Date

2026-10-02

Author

Alfie Richards

Commit

c3aaf80822f28e4517e783422473a3785f94d619

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: aarch64
patch_id: —
commit_hash: c3aaf80822f28e4517e783422473a3785f94d619
source_type: github
headline: aarch64: Add --param=aarch64-autovec-mode
tldr: Introduces a new GCC parameter to manually control AArch64 autovectorization modes for testing.
author: Alfie Richards
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • aarch64
• autovectorization
• testing
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/c3aaf80822f28e4517e783422473a3785f94d619
date: 2026-10-02T00:00:00.000Z

A new GCC parameter, --param=aarch64-autovec-mode, has been added for the AArch64 target. This parameter allows developers to explicitly force specific autovectorization modes, which is particularly useful for testing and debugging autovectorization behavior on AArch64 architectures.