Landing: f1245f9923e2

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Project / Subsystem

gcc / aarch64

Date

2026-07-07

Author

Richard Earnshaw

Commit

f1245f9923e29b707df2ecaf0e796c1e2b035ec5

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: aarch64
patch_id: —
commit_hash: f1245f9923e29b707df2ecaf0e796c1e2b035ec5
source_type: github
headline: AArch64: Remove MPAMv2 and support for MPAMV2_VID
tldr: Removes obsolete AArch64 MPAMv2 extension and related instructions from GCC.
author: Richard Earnshaw
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • aarch64
• architecture
• removal
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/f1245f9923e29b707df2ecaf0e796c1e2b035ec5
date: 2026-07-07T00:00:00.000Z

This commit removes the +mpamv2 architectural extension and associated instructions from the AArch64 backend, as this extension is no longer part of the architecture specification. Arm has withdrawn MPAMv2, and no known implementations exist, making the feature extension and its instructions redundant.