Landing: 06fd55468f12

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Project / Subsystem

gcc / i386

Date

2026-08-18

Author

H.J. Lu

Commit

06fd55468f12f3e6acf4172ee74d6545be231fde

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: i386
patch_id: —
commit_hash: 06fd55468f12f3e6acf4172ee74d6545be231fde
source_type: github
headline: xop-pcmov3.c: Disable AVX512F to fix assembler scan failures
tldr: Disables AVX512F in a test case to prevent assembler scan failures related to vpcmov.
author: H.J. Lu
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • i386
• avx512
• testsuite
• compiler
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/06fd55468f12f3e6acf4172ee74d6545be231fde
date: 2026-08-18T00:00:00.000Z

Test failures in gcc.target/i386/xop-pcmov3.c occurred because the avx512vl_vternlogv4si_all pattern was being enabled, leading to unexpected vpcmov instructions in the assembly output. This commit modifies the test case to disable AVX512F using -mno-avx512f when TARGET_PREFER_AVX256 is not enabled by default, thus resolving the assembler scan failures.