Discussed on cfe-commits (Week-of-Mon-20180820), this change leads to
the generation of invalid IR for OpenCL without giving an error.
Therefore, the conclusion was to revert.
llvm-svn: 342885
Currently we only have OpenCL 2.0 Builtins i.e. pipes or address space conversions.
They have to be added only in the version 2.0 compilation mode to make the identifiers
available for use in the other versions.
Review: http://reviews.llvm.org/D20249
llvm-svn: 274509