Revert 178811 until I fix the unit tests.

llvm-svn: 178813

clang/include/clang/Basic/DiagnosticSemaKinds.td

@@ -6205,9 +6205,7 @@ def err_sampler_argument_required : Error<
   "sampler_t variable required - got %0">;
 def err_wrong_sampler_addressspace: Error<
   "sampler type cannot be used with the __local and __global address space qualifiers">;
-def err_opencl_global_invalid_addr_space : Error<
-  "global variables must have a constant address space qualifier">;
-  
+
 // OpenMP support.
 def err_omp_expected_var_arg_suggest : Error<
   "%0 is not a global variable, static local variable or static data member%select{|; did you mean %2?}1">;

clang/lib/Sema/SemaDecl.cpp

@@ -5177,16 +5177,6 @@ bool Sema::CheckVariableDeclaration(VarDecl *NewVD,
     return false;
   }
 
-  // OpenCL v1.2 s6.5 - All program scope variables must be declared in the
-  // __constant address space.
-  if (getLangOpts().OpenCL && NewVD->isFileVarDecl()
-      && T.getAddressSpace() != LangAS::opencl_constant
-      && !T->isSamplerT()){
-    Diag(NewVD->getLocation(), diag::err_opencl_global_invalid_addr_space);
-    NewVD->setInvalidDecl();
-    return false;
-  }
-  
   // OpenCL v1.2 s6.8 -- The static qualifier is valid only in program
   // scope.
   if ((getLangOpts().OpenCLVersion >= 120)

clang/test/SemaOpenCL/event_t.cl

@@ -2,7 +2,7 @@
 
 event_t glb_evt; // expected-error {{the event_t type cannot be used to declare a program scope variable}}
 
-constant struct evt_s {
+struct evt_s {
   event_t evt;  // expected-error {{the event_t type cannot be used to declare a structure or union field}}
 } evt_str;
 

clang/test/SemaOpenCL/storageclass.cl

@@ -2,8 +2,6 @@
 
 static constant int A = 0;
 
-int X = 0; // expected-error{{global variables must have a constant address space qualifier}}
-
 // static is not allowed at local scope.
 void kernel foo() {
   static int X = 5; // expected-error{{variables in function scope cannot be declared static}}