id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1642	SIMD code for ALF classification does not match C code	emora		"The simdDeriveClassificationBlk_HBD() function does not match the deriveClassificationBlk() function. This condition:


{{{
if( (uint32_t)d1 * (uint32_t)hv0 > (uint32_t)hv1 * (uint32_t)d0 )
}}}


has been modified to: 


{{{
if( (uint64_t)d1 * (uint64_t)hv0 > (uint64_t)hv1 * (uint64_t)d0 )
}}}
  
when RExt_HIGH_BIT_DEPTH_SUPPORT is enabled. However the corresponding SIMD code does not reflect this modification as _mm_mullo_epi32(d1, hv0) or _mm_mullo_epi32(hv1, d0) will only retain the first 32 bits of the multiplication result.


{{{
__m128i a = _mm_xor_si128(_mm_mullo_epi32(d1, hv0), _mm_set1_epi32(0x80000000));
__m128i b = _mm_xor_si128(_mm_mullo_epi32(hv1, d0), _mm_set1_epi32(0x80000000));
}}}
"	defect	new	minor		VTM	VTM-23.0			ksuehring XiangLi fbossen jvet@…