Portable Computing Language (pocl) is an implementation of the OpenCL standard
which can be adapted for new targets and devices, both for homogeneous CPU and
pocl uses Clang as an OpenCL C frontend and LLVM for the kernel compiler
implementation, and as a portability layer. If your desired target has an LLVM
backend, it should be possible to get OpenCL support by using pocl.
pocl yields improved performance portability by using a kernel compiler that
can generate multi-work-item work-group functions that exploit various types of
parallel hardware resources, such as VLIW, superscalar, SIMD, SIMT, multicore