[clang] [Sema] Fix bug in builtin AS override (PR #138141)

[Joe Nash via cfe-commits]

Sisyph wrote:

> Is there a test that needs to be added here?

With just the change to BuiltinsAMDGPU.def, we will get errors in 

  Clang :: CodeGenOpenCL/builtins-amdgcn-gfx950.cl
  Clang :: CodeGenOpenCL/builtins-amdgcn-load-to-lds.cl
  Clang :: SemaOpenCL/builtins-amdgcn-load-to-lds-err.cl

which the patch to Sema fixes. 

I don't know of a reasonable way to write a test only target builtin and use of it, to guard against something like __builtin_amdgcn_load_to_lds being removed and then the Sema code being changed.


https://github.com/llvm/llvm-project/pull/138141