[DO_NOT_MERGE] Ispc dev temp#1

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adhithadias wants to merge 8 commits into

Commits on Jun 28, 2021

Commits on Jul 12, 2021

separate ispc code to another stream and smaller conversions to match ispc code
adhithadias
committed

Commits on Jul 19, 2021

add CPUSpmd directive partially
adhithadias
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Commits on Jul 26, 2021

add tests and ispc compilation
adhithadias
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Commits on Sep 8, 2021