On Wed, May 25, 2016 at 11:53 PM, Richard Smith <rich...@metafoo.co.uk> wrote:
> On Wed, May 25, 2016 at 2:20 AM, Alexey Bader via cfe-commits < > cfe-commits@lists.llvm.org> wrote: > >> bader added a subscriber: bader. >> bader added a comment. >> >> In http://reviews.llvm.org/D20602#438667, @rsmith wrote: >> >> > I'm not suggesting it be treated as invalid. This extension is part of >> at least OpenCL 2.1, but it's not part of OpenCL 1.0. `ext_vector_type` is >> Clang's implementation of the OpenCL vector type. Therefore if the user >> asks us to support OpenCL 1.0, we should give them a warning if they use >> this syntax. >> > >> > If we're not building an OpenCL source file, then yes, this is our >> extension and it makes sense for it to be available unconditionally >> (without a warning). >> >> >> To avoid confusion, I'd like to note that rgba selector was first >> introduced in OpenCL C++ kernel language, which is currently in provisional >> state and will be part of OpenCL version 2.2. >> https://www.khronos.org/registry/cl/specs/opencl-2.2-cplusplus.pdf (page >> 18). >> > > https://www.khronos.org/registry/cl/specs/opencl-2.1-openclc++.pdf page > 12-13 document it. Is that not OpenCL version 2.1? > > Not quite. OpenCL C++ kernel language was planned to be ratified with OpenCL 2.1 standard, but it did happen. It's still listed as provisional although OpenCL 2.1 specification was released last year. https://www.khronos.org/opencl/ Ratified OpenCL 2.1 standard requires to support only OpenCL C 2.0 and SPIR-V 1.0 kernel languages. There is no much sense to support provisional specification that will never be ratified. BTW, Khronos provided open source implementation of OpenCL C++ compiler and since OpenCL C++ is a new kernel language and specification ( https://www.khronos.org/registry/cl/specs/opencl-2.2-cplusplus.pdf) is version 1.0, the numbering of standard versions is different from OpenCL C. Current std version is 'c++'. Here is usage example: https://github.com/KhronosGroup/SPIR/blob/spirv-1.1/test/OpenCL/OpenCL22/opencl_cplusplus.cl > OpenCL version 2.1 uses OpenCL C 2.0 kernel language, which doesn't >> support rgba selector. >> >> https://www.khronos.org/registry/cl/ - latest versions of OpenCL specs. >> >> >> http://reviews.llvm.org/D20602 >> >> >> >> _______________________________________________ >> cfe-commits mailing list >> cfe-commits@lists.llvm.org >> http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits >> > >
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