[PATCH] D28691: Add OpenCL 2.0 atomic builtin functions as Clang builtin

[Brian Sumner via Phabricator via cfe-commits]

b-sumner added a comment.

In https://reviews.llvm.org/D28691#820595, @rjmccall wrote:

> In https://reviews.llvm.org/D28691#820541, @b-sumner wrote:
>
> > There are other languages for heterogeneous compute that have scopes, although not exposed quite as explicitly as OpenCL.  For example AMD's "HC" language.  And any language making use of clang and targeting SPIR-V would likely use these builtins.  I think a more generic prefix is appropriate, and "scoped" tells us exactly when these are needed.
>
>
> But would those languages use the same language design for these scopes as OpenCL if they did expose them, as opposed to some more elaborate scoping specification?  My objection is not that the concept is inherently OpenCL-specific, it's that the presentation in the language might be inherently OpenCL-specific, which makes staying in the opencl namespace is prudent.


Are you envisioning a language far enough from C/C++ that a standard library or header would not be able to map a scoped atomic operation into a call to one of these new builtins?  Would we expect more of such languages than languages that would do such a mapping?


https://reviews.llvm.org/D28691