[FFmpeg-devel] [PR] avutil/x86/x86inc: make AVX imply CLMUL (PR #21733)

[FFmpeg-devel] [PR] avutil/x86/x86inc: make AVX imply CLMUL (PR #21733)

[James Almer via ffmpeg-devel]

PR #21733 opened by James Almer (jamrial)
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21733
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21733.patch

The clmul instructions are present in all AVX CPUs (Sandy Bridge and newer, Bulldozer and newer).


>From e4cb580bcb809e8120a3bebdb8ce29164f905f3d Mon Sep 17 00:00:00 2001
From: James Almer <jamrial@gmail.com>
Date: Wed, 11 Feb 2026 13:09:19 -0300
Subject: [PATCH] avutil/x86/x86inc: make AVX imply CLMUL

The clmul instructions are present in all AVX CPUs (Sandy Bridge and newer,
Bulldozer and newer).

Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavutil/x86/x86inc.asm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavutil/x86/x86inc.asm b/libavutil/x86/x86inc.asm
index 0e80ebed43..8983eab4b7 100644
--- a/libavutil/x86/x86inc.asm
+++ b/libavutil/x86/x86inc.asm
@@ -955,8 +955,8 @@ BRANCH_INSTR jz, je, jnz, jne, jl, jle, jnl, jnle, jg, jge, jng, jnge, ja, jae,
 %assign cpuflags_sse42     (1<<11) | cpuflags_sse4
 %assign cpuflags_aesni     (1<<12) | cpuflags_sse42
 %assign cpuflags_clmul     (1<<13) | cpuflags_sse42
-%assign cpuflags_gfni      (1<<14) | cpuflags_aesni|cpuflags_clmul
-%assign cpuflags_avx       (1<<15) | cpuflags_sse42
+%assign cpuflags_gfni      (1<<14) | cpuflags_aesni
+%assign cpuflags_avx       (1<<15) | cpuflags_clmul
 %assign cpuflags_xop       (1<<16) | cpuflags_avx
 %assign cpuflags_fma4      (1<<17) | cpuflags_avx
 %assign cpuflags_fma3      (1<<18) | cpuflags_avx
-- 
2.52.0

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