[PATCH] D62197: [OpenCL] Fix file-scope const sampler variable for 2.0

[Yaxun Liu via Phabricator via cfe-commits]

yaxunl created this revision.
yaxunl added a reviewer: Anastasia.

OpenCL spec v2.0 s6.13.14:

  Samplers can also be declared as global constants in the program
  source using the following syntax.
  
     const sampler_t <sampler name> = <value>

This works fine for OpenCL 1.2 but fails for 2.0, because clang duduces
address space of file-scope const sampler variable to be in global address
space whereas spec v2.0 s6.9.b forbids file-scope sampler variable to be
in global address space.

The fix is not to deduce address space for file-scope sampler variables.


https://reviews.llvm.org/D62197

Files:
  lib/Sema/SemaType.cpp
  test/CodeGenOpenCL/sampler.cl
  test/SemaOpenCL/sampler_t.cl

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