A number of feature macros were being defined for OpenCL C 3.0 even though they are optional. I have removed these defines and updated the related tests. This should help users who are creating compilers for more limited environments.
This will also affect C++ for OpenCL 2021 since I believe its follows the same system of feature macros as OpenCL C 3.0.
This contribution is being made by Codeplay on behalf of Samsung.