[PATCH] D153233: clang: Add __builtin_elementwise_rint and nearbyint

[Matt Arsenault via Phabricator via cfe-commits]

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These are basically the same thing and only differ for strictfp,
so add both for future proofing. Note all the elementwise functions are
currently broken for strictfp, and use non-constrained ops. Add a test
that demonstrates this, but doesn't attempt to fix it.


https://reviews.llvm.org/D153233

Files:
  clang/docs/LanguageExtensions.rst
  clang/docs/ReleaseNotes.rst
  clang/include/clang/Basic/Builtins.def
  clang/lib/CodeGen/CGBuiltin.cpp
  clang/lib/Sema/SemaChecking.cpp
  clang/test/CodeGen/builtins-elementwise-math.c
  clang/test/CodeGen/strictfp-elementwise-bulitins.cpp
  clang/test/Sema/builtins-elementwise-math.c

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