Landing: b002ccc6b36f

← All landings

Project / Subsystem

gcc / x86

Date

2026-08-19

Author

H.J. Lu

Commit

b002ccc6b36ff4762fb8a280a03f6fee37a6e8a5

Source

github

Perf win

Breaking

View on GitHub →

All attributes

project: gcc
subsystem: x86
patch_id: —
commit_hash: b002ccc6b36ff4762fb8a280a03f6fee37a6e8a5
source_type: github
headline: avx512bw-shiftqihi-constant-1.c: Compile with -mno-gfni
tldr: A specific AVX512BW test now compiles with GFNI disabled to avoid assembler failures.
author: H.J. Lu
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • x86
• avx512bw
• gfni
• testsuite
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/b002ccc6b36ff4762fb8a280a03f6fee37a6e8a5
date: 2026-08-19T00:00:00.000Z

The test case avx512bw-shiftqihi-constant-1.c was failing due to the GFNI instruction set, enabled by default, generating vgf2p8affineqb instructions that conflicted with the expected AVX512BW instructions. This commit adds the -mno-gfni flag to the test’s options, preventing the use of GFNI instructions and resolving the test failures.