Landing: bd348b7447ff

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Project / Subsystem

gcc / gcc/i386

Date

2026-09-02

Author

Haochen Jiang

Commit

bd348b7447ff936c6a8f89a7375b04776492ac39

Source

github

Perf win

Yes

Breaking

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All attributes

project: gcc
subsystem: gcc/i386
patch_id: —
commit_hash: bd348b7447ff936c6a8f89a7375b04776492ac39
source_type: github
headline: Support ACEv1 instructions reused from AMX-AVX512 and tilemovcol
tldr: Adds ACEv1 instructions formerly from AMX-AVX512 and a new tilemovcol implementation, distinguishing intrinsics from legacy AMX.
author: Haochen Jiang
outcome: committed
performance_win: true
breaking_change: false
series_id: —
series_parts: []
tags: • gcc
• i386
• ACEv1
• AMX
• vectorization
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/bd348b7447ff936c6a8f89a7375b04776492ac39
date: 2026-09-02T00:00:00.000Z

This commit integrates ACEv1 instructions that were previously part of AMX-AVX512, ensuring distinct intrinsic names to avoid conflicts with legacy AMX. It also introduces a new tilemovcol implementation, noting its similarity to tilemovrow. The changes include updates to intrinsic headers, definition files, expansion logic, and machine descriptions, along with new compile tests.