[all-commits] [llvm/llvm-project] 5184dc: [Clang][X86] Change X86 cast intrinsics to use __b...

[ManuelJBrito via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5184dc2d7cce5971f4386c6f99d04f87233dd313
      https://github.com/llvm/llvm-project/commit/5184dc2d7cce5971f4386c6f99d04f87233dd313
  Author: ManuelJBrito <manuel.brito at tecnico.ulisboa.pt>
  Date:   2023-04-17 (Mon, 17 Apr 2023)

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

  Log Message:
  -----------
  [Clang][X86] Change X86 cast intrinsics to use __builtin_nondeterministic_value

The following intrinsics are currently implemented using a shufflevector with
an undefined mask, this is however incorrect according to intel's semantics for
undefined value which expect an unknown but consistent value.

With __builtin_nondeterministic_value we can now match intel's undefined value.

Differential Revision: https://reviews.llvm.org/D143287