[all-commits] [llvm/llvm-project] 47f717: [WebAssembly] Use "signed char" instead of "char" ...

[Dan Gohman via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 47f7174ffa71d339c1a65d1dd9a2ac5ff2abc95d
      https://github.com/llvm/llvm-project/commit/47f7174ffa71d339c1a65d1dd9a2ac5ff2abc95d
  Author: Dan Gohman <sunfish at mozilla.com>
  Date:   2020-08-04 (Tue, 04 Aug 2020)

  Changed paths:
    M clang/include/clang/Basic/BuiltinsWebAssembly.def
    M clang/lib/Headers/wasm_simd128.h
    M clang/test/CodeGen/builtins-wasm.c

  Log Message:
  -----------
  [WebAssembly] Use "signed char" instead of "char" in SIMD intrinsics.

This allows people to use `int8_t` instead of `char`, -funsigned-char,
and generally decouples SIMD from the specialness of `char`.

And it makes intrinsics like `__builtin_wasm_add_saturate_s_i8x16`
and `__builtin_wasm_add_saturate_u_i8x16` use signed and unsigned
element types, respectively.

Differential Revision: https://reviews.llvm.org/D85074