[PATCH] D76077: [ARM] Add __bf16 as new Bfloat16 C Type

Sjoerd Meijer via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Thu May 14 09:11:07 PDT 2020


SjoerdMeijer added inline comments.


================
Comment at: clang/docs/LanguageExtensions.rst:518
+Clang supports three half-precision (16-bit) floating point types: ``__fp16``,
+``_Float16`` and ``__bf16``.  These types are supported in all language modes.
 
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Not my field of expertise, and sorry if I've missed this somewhere, but was wondering if this (i.e. all language modes) means we need C++ name mangling support for bfloat? In the AArch64 backend I saw this:

  getBFloat16Mangling() const override { return "u6__bf16"; }

But that's something else I guess, and I was guessing a 2 letter mangling needs to be added here?

https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling-builtin


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D76077/new/

https://reviews.llvm.org/D76077





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