[PATCH] D41756: [libcxx] implement <experimental/simd> simd_mask<> casts and some horizontal operations.

[Tim Shen via Phabricator via cfe-commits]

timshen created this revision.
timshen added reviewers: mclow.lists, EricWF.
Herald added a subscriber: sanjoy.

popcount is implemented in terms of for loop. On x86, it can be specialized to _mm_movemask_* + __builtin_popcountll() in the future.


https://reviews.llvm.org/D41756

Files:
  libcxx/include/experimental/simd
  libcxx/test/std/experimental/simd/simd.casts/to_compatible.pass.cpp
  libcxx/test/std/experimental/simd/simd.casts/to_fixed_size.pass.cpp
  libcxx/test/std/experimental/simd/simd.casts/to_native.pass.cpp
  libcxx/test/std/experimental/simd/simd.horizontal/concat.pass.cpp
  libcxx/test/std/experimental/simd/simd.horizontal/mask.pass.cpp
  libcxx/test/std/experimental/simd/simd.horizontal/split.pass.cpp

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