Landing: 8653813b1e43

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Project / Subsystem

gcc / aarch64

Date

2026-03-12

Author

Artemiy Volkov

Commit

8653813b1e4377bf01c3b1a45c11b9616f5886fe

Source

github

Perf win

Yes

Breaking

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project: gcc
subsystem: aarch64
patch_id: —
commit_hash: 8653813b1e4377bf01c3b1a45c11b9616f5886fe
source_type: github
headline: AArch64: Add __ARM_FEATURE_ macros for SVE2.2 and SME2.2.
tldr: The compiler now defines `__ARM_FEATURE_` macros for the SVE2.2 and SME2.2 extensions on AArch64.
author: Artemiy Volkov
outcome: committed
performance_win: true
breaking_change: false
series_id: —
series_parts: []
tags: • aarch64
• SVE2.2
• SME2.2
• macros
• compiler flags
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/8653813b1e4377bf01c3b1a45c11b9616f5886fe
date: 2026-03-12T00:00:00.000Z

This commit introduces the __ARM_FEATURE_ macros for the Scalable Vector Extension 2.2 (SVE2.2) and Scalable Matrix Extension 2.2 (SME2.2) on AArch64. These macros allow code to detect the presence of these extensions at compile time, enabling conditional compilation of code that utilizes SVE2.2 and SME2.2 features. The patch also includes new tests to verify the correct definition of these macros.