Add support for language-specific address spaces.  On top of that,
add support for the OpenCL __private, __local, __constant and
__global address spaces, as well as the __read_only, _read_write and
__write_only image access specifiers.  Patch originally by ARM;
language-specific address space support by myself.

llvm-svn: 127915
diff --git a/clang/lib/CodeGen/CGDebugInfo.cpp b/clang/lib/CodeGen/CGDebugInfo.cpp
index b23b392..bf5e7a5 100644
--- a/clang/lib/CodeGen/CGDebugInfo.cpp
+++ b/clang/lib/CodeGen/CGDebugInfo.cpp
@@ -462,8 +462,8 @@
   // Bit size, align and offset of the type.
   // Size is always the size of a pointer. We can't use getTypeSize here
   // because that does not return the correct value for references.
-  uint64_t Size = 
-    CGM.getContext().Target.getPointerWidth(PointeeTy.getAddressSpace());
+  unsigned AS = CGM.getContext().getTargetAddressSpace(PointeeTy);
+  uint64_t Size = CGM.getContext().Target.getPointerWidth(AS);
   uint64_t Align = CGM.getContext().getTypeAlign(Ty);
 
   return