- Performance testing revealed significant memcpy performance degradation
when bit_arch_AVX_Fast_Unaligned_Load is enabled on Hygon 3.
- Hygon confirmed AVX performance issues in certain memory functions.
- Glibc benchmarks show SSE outperforms AVX for
memcpy/memmove/memset/strcmp/strcpy/strlen and so on.
- Hardware differences primarily in floating-point operations don't justify
AVX usage for memory operations.
Reviewed-by: gaoxiang <gaoxiang@kylinos.cn>
Signed-off-by: litenglong <litenglong@kylinos.cn>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
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