[PATCH] D143287: [Clang][X86] Change X86 cast intrinsics to use __builtin_nondeterministic_value

[Manuel Brito via Phabricator via cfe-commits]

ManuelJBrito updated this revision to Diff 500149.
ManuelJBrito added a comment.

Update tests after D143593 <https://reviews.llvm.org/D143593>.

There are some performance regressions with casts from 128 to 512. The backend inserts vinsertf instructions. So that as to be fixed.
In D130339 <https://reviews.llvm.org/D130339> @RKSimon  mentioned something about custom vector widening patterns that need to be adjusted to handle freeze(undef), any pointers for how a patch for that would look like?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D143287/new/

https://reviews.llvm.org/D143287

Files:
  clang/lib/Headers/avx512fintrin.h
  clang/lib/Headers/avx512fp16intrin.h
  clang/lib/Headers/avxintrin.h
  clang/test/CodeGen/X86/avx-builtins.c
  clang/test/CodeGen/X86/avx-cast-builtins.c
  clang/test/CodeGen/X86/avx512f-builtins.c
  clang/test/CodeGen/X86/avx512fp16-builtins.c

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