[PATCH] D46863: [X86] Use __builtin_convertvector to implement some of the packed integer to packed flow conversion intrinsics.

[Craig Topper via Phabricator via cfe-commits]

craig.topper created this revision.
craig.topper added reviewers: RKSimon, spatel.

I believe this is safe assuming default rounding mode. The conversion might be inexact, but it can never overflow the FP type so this shouldn't be undefined behavior for the uitofp/sitofp instructions.

We already do something similar for scalar conversions.


Repository:
  rC Clang

https://reviews.llvm.org/D46863

Files:
  include/clang/Basic/BuiltinsX86.def
  lib/Headers/avx512dqintrin.h
  lib/Headers/avx512fintrin.h
  lib/Headers/avx512vldqintrin.h
  lib/Headers/avx512vlintrin.h
  lib/Headers/avxintrin.h
  lib/Headers/emmintrin.h
  test/CodeGen/avx-builtins.c
  test/CodeGen/avx512dq-builtins.c
  test/CodeGen/avx512f-builtins.c
  test/CodeGen/avx512vl-builtins.c
  test/CodeGen/avx512vldq-builtins.c
  test/CodeGen/builtins-x86.c
  test/CodeGen/sse2-builtins.c

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