Fix for #339 (xGetHADs mismatch between SCALAR and SIMD) (!635) · Merge requests · jvet / VVCSoftware_VTM

Adam Wieckowski requested to merge adam_wieckowski/VVCSoftware_VTM:fix_simd_hads into master Jul 15, 2019

Extended the HAD calculation with SIMD to be performed in 32-bit space rather than 16-bit. This fixes #339.

The adaptations for AVX2 are straightforward and should not impact the performance to much. For SSE, there are quite a few more registers required, so this might impact the performance. Now the SIMD (both AVX2 and SSE41) version of xGetHADs produce equivalent results as the scalar implementation.

Fix for #339 (xGetHADs mismatch between SCALAR and SIMD)

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