taking OpenCL C as a built-in lang of GCC?

[Jonathan Wakely]

On Thu, 12 Sep 2019 at 15:49, Jianbin Fang <jianbinfang@yeah.net> wrote:
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> Hello Guys,

Please don't cross-post to gcc@gcc.gnu.org and gcc-help@gcc.gnu.org,
pick one list, not both.


> I am working on OpenCL for a couple of years, and would like to ask, as for GCC, why not taking OpenCL C as a built-in language in its front-end?
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> As we know, most OpenCL kernel compilers are built based on Clang/LLVM, and now, Clang has taken the OpenCL C language as one of its built-in languages. On the other hand, I found no OpenCL implementations which are based on GCC. Do you have any idea of the reasons?

I think the reason is that nobody has written such a front end.


> I have this question because some devices may not have LLVM backends, but only have their backends in GCC. In such a case, a natural way is to add a new font-end into GCC, and build a kernel compiler based on the GCC compiling passes. What are the difficulties behind this idea?