[PATCH] D107769: [OpenCL] Make generic addrspace optional for -fdeclare-opencl-builtins

[Sven van Haastregt via Phabricator via cfe-commits]

svenvh created this revision.
svenvh added reviewers: Anastasia, airlied, azabaznov.
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Currently, -fdeclare-opencl-builtins always adds the generic address
space overloads of e.g. the vload builtin functions in OpenCL 3.0
mode, even when the generic address space feature is disabled.

Guard the generic address space overloads by the
`__opencl_c_generic_address_space` feature instead of by OpenCL
version.

Add a new field `RequireDisabledExtension` to the `Builtin` class so
that we can make certain builtins available only when an extension is
disabled.  Thus, we can provide generic address space overloads OR
private/global/local address space overloads depending on the generic
address space feature availability.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D107769

Files:
  clang/lib/Sema/OpenCLBuiltins.td
  clang/lib/Sema/SemaLookup.cpp
  clang/test/CodeGenOpenCL/fdeclare-opencl-builtins.cl
  clang/test/SemaOpenCL/fdeclare-opencl-builtins.cl
  clang/utils/TableGen/ClangOpenCLBuiltinEmitter.cpp

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