[llvm-dev] [cfe-dev] [Openmp-dev] RFC: Proposing an LLVM subproject for parallelism runtime and support libraries

[Chandler Carruth via llvm-dev]

On Tue, Mar 15, 2016 at 12:13 PM Cownie, James H <james.h.cownie at intel.com>
wrote:

> Chandler,
>
>
>
> That raises a more meta-question for me, which is “Why should
> StreamExecutor be in LLVM at all?”
>
>
>
> AFAICS, with you approach
>
> ·         It is not a runtime library whose interface the compiler needs
> to understand.
>
The original email pretty clearly spells out how it is specifically
intended to be a target for the compiler?


> ·         It does not depend on any LLVM runtime libraries.
>
> ·         It is expected to be used with out-of-tree plugins.
>
Note that this doesn't mean there won't be in-tree plugins. It's analogous
to how LLVM supports out-of-tree targets.

>
>
> If I got all of that right, what connection does it have with LLVM that
> makes having it in the LLVM tree necessary, or an improvement over simply
> having it on github (or whatever your favourite open-source hosting
> location is)?
>
If there were nothing compiler related to it, then the argument would be
much more tenuous. But I think there is a great deal of compiler relevance
here.
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