Anastasia added a comment. OpenCL C is based on C99, so OpenMP isn't enabled by default. But in your tests you use `-fopenmp` to activate it.
OpenCL general philosophy is that vectors are written explicitly, but it's not always very easy. In OpenCL C++ we have added an attribute hint for auto vectorization `cl::vec_type_hint`. It's given to a kernel rather than for a loop though. So I think this `simd` pragma is useful. My only worry is that other OpenMP features might not work well in OpenCL and we have no way to reject them at the moment. Repository: rC Clang https://reviews.llvm.org/D46667 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
