PATCH: re-enable OpenCL extensions

[Kalle Raiskila via cfe-commits]

On 19.01.2017 23:43, Liu, Yaxun (Sam) wrote:
> I think the supported extensions for a target should be as accurate as possible, for it to be useful. Setting all
> extensions to be supported on all targets will defeat its purpose.

I agree on the first part, but arrive at the exact opposite result :)
At least ARM, AARch64, PowerPC and MIPS suffer from this now (i.e. the ones someone even tried to compile pocl on).
And OCL-C being a front-end option, and OpenCL a stand-alone library, there isn't too much backend target specific
stuff going on.

> I recommend to introduce "pocl" as an environment in the triple and add supported OpenCL extensions for different
> targets based on that.

This does sound like something we should consider. This would at the same time allow for development on the experimental 
backends.

> -----Original Message----- From: Anastasia Stulova [mailto:Anastasia.Stulova at arm.com] Sent: Thursday, January 19,

  Do you think this can be solved instead with the new " -cl-ext=" option:
> http://clang.llvm.org/docs/UsersManual.html#opencl-specific-options

I'll have to have a better, second look at this, thanks. If it don't, I'll file bug reports :)


thanks,
kalle