OpenCL: add a non-standard extension, cl_clang_storage_class_specifiers,
which enables support for C99 storage-class specifiers.

This extension is intended to be used by implementations to implement
OpenCL C built-in functions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141271 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed