Landing: 7929c9d5a9ad

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Project / Subsystem

gcc / x86

Date

2026-08-19

Author

H.J. Lu

Commit

7929c9d5a9ad7b81be12e995f0920701f654dae5

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: x86
patch_id: —
commit_hash: 7929c9d5a9ad7b81be12e995f0920701f654dae5
source_type: github
headline: sse2-shiftqihi-constant-1.c: Compile with -mno-gfni
tldr: A specific SSE2 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
• sse2
• gfni
• testsuite
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/7929c9d5a9ad7b81be12e995f0920701f654dae5
date: 2026-08-19T00:00:00.000Z

The test case sse2-shiftqihi-constant-1.c was failing because the GFNI instruction set, enabled by default, generated instructions like gf2p8affineqb which conflicted with the expected SSE2 instructions. This commit adds the -mno-gfni flag to the test’s options, preventing the use of GFNI instructions and resolving the test failures.