diff -up firefox-105.0/mozglue/misc/SIMD_avx2.cpp.old firefox-105.0/mozglue/misc/SIMD_avx2.cpp
--- firefox-105.0/mozglue/misc/SIMD_avx2.cpp.old	2022-09-22 21:35:07.006221995 +0200
+++ firefox-105.0/mozglue/misc/SIMD_avx2.cpp	2022-09-22 21:36:12.972480517 +0200
@@ -55,7 +55,7 @@ __m256i CmpEq256(__m256i a, __m256i b) {
   return _mm256_cmpeq_epi64(a, b);
 }
 
-#  if defined(__GNUC__) && !defined(__clang__)
+#  if 0
 
 // See the comment in SIMD.cpp over Load32BitsIntoXMM. This is just adapted
 // from that workaround. Testing this, it also yields the correct instructions