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...on-kernel functions have private linkage, I believe: they are only callable by other functions in the same compilation unit. However, a __kernel behaves differently when called from the user program vs. another function in the compilation unit. In OpenCL the user program can invoke a kernel as an NDRange, i.e. with an implied loop around it to iterate over an index space of 1 to 3 dimensions. (This is the "big idea" of OpenCL). (The index values are available in the function body from intrinsic functions get_work_dim() and get_global_id(uint workdim).) But that implied loop is only appli...

On 16 December 2010 14:33, Peter Collingbourne <peter at pcc.me.uk> wrote: > On Thu, Dec 16, 2010 at 06:16:25PM -0000, Anton Lokhmotov wrote: > > Mike Gist wrote: > > > You could also consider placing all kernel functions in a 'kernel' > > > section, or adding a function attribute for kernels. > > Unlike in Clang, function attribute bit-fields in

On Thu, Dec 16, 2010 at 06:16:25PM -0000, Anton Lokhmotov wrote: > Mike Gist wrote: > > You could also consider placing all kernel functions in a 'kernel' > > section, or adding a function attribute for kernels. > Unlike in Clang, function attribute bit-fields in LLVM are pretty crowded > (only couple of bits are unused?). Besides, we do not want to represent >