[PATCH] D100124: [Clang][NVPTX] Add NVPTX intrinsics and builtins for CUDA PTX redux.sync instructions

[Jon Chesterfield via Phabricator via llvm-commits]

JonChesterfield added a comment.

Interesting. Reduction across lanes in warp? If so, this is probably a way to handle the last step reduction for openmp reductions


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  https://reviews.llvm.org/D100124/new/

https://reviews.llvm.org/D100124