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Fixed in 1.4.4
Votes
0
Found in [Package]
1.4.3
Issue ID
1298811
Regression
No
[Burst] X86.Avx2.blend_epi32 bit flip error in managed C# and Burst compilation error
How to reproduce:
1. Open the attached project ("intrins.zip")
2. Review functions in "Reproduce_Avx2_blend_epi32_bugs.cs"
3. Debug the managed C# and inspect the assembly in the Burst Inspector
Expected results: The mask stays the same when compiled for X86.Avx2.blend_epi32; X86.Avx2.blend_epi32 and X86.Avx2.mm256_blend_epi32 output the correct result
Actual results: The mask changes for X86.Avx2.blend_epi32 in the assembly and for X86.Avx2.blend_epi32 and X86.Avx2.mm256_blend_epi32 a bit is flipped for the value -6558885 in the result
Reproducible with: 2018.4.30f1, 2019.4.17f1, 2020.1.17f1, 2020.2.1f1, 2021.1.0a10, 2021.2.0a1 (Burst 1.3.0 - 1.4.3)
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Resolution Note (fix version 1.4.4):
Fixed in Burst 1.4.4 which is available in 2018.4 and up