[PATCH] D17345: [OpenCL] Improve diagnostics of address spaces for variables inside function

[Anastasia Stulova via cfe-commits]

Anastasia created this revision.
Anastasia added reviewers: pekka.jaaskelainen, yaxunl.
Anastasia added a subscriber: cfe-commits.

This patch:
1. Prevents local variables to be declared in global AS
2. Diagnoses AS of local variables with an extern storage class as if they would be in a program scope

http://reviews.llvm.org/D17345

Files:
  include/clang/Basic/DiagnosticSemaKinds.td
  lib/Sema/SemaDecl.cpp
  test/Parser/opencl-storage-class.cl
  test/SemaOpenCL/storageclass-cl20.cl
  test/SemaOpenCL/storageclass.cl

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