Landing: c3675d9eb343

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Project / Subsystem

gcc / gcc/aarch64

Date

2026-01-10

Author

Artemiy Volkov

Commit

c3675d9eb343b3e495c9499b52e13c46623ceabd

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc/aarch64
patch_id: —
commit_hash: c3675d9eb343b3e495c9499b52e13c46623ceabd
source_type: github
headline: AArch64: Implement changes for COMPACT and EXPAND SVE instructions
tldr: The Arm Scalable Vector Extension (SVE) now supports COMPACT and EXPAND instructions in streaming mode under SME2.2, with new intrinsics defined in the ACLE ma…
author: Artemiy Volkov
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • aarch64
• sve
• sme
• intrinsics
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/c3675d9eb343b3e495c9499b52e13c46623ceabd
date: 2026-01-10T00:00:00.000Z

The Arm Scalable Vector Extension (SVE) now supports COMPACT and EXPAND instructions in streaming mode under SME2.2. The COMPACT instruction copies active vector elements to lower-numbered elements, while the EXPAND instruction copies lower-numbered vector elements to active elements. New intrinsics for these instructions have been added, as documented in the ACLE manual.