Merge pull request #913 from aaronenyeshi/fix-texture-constant-addrspace

Fix texture using constant addrspace 4

include/hip/hcc_detail/texture_functions.h

@@ -50,7 +50,7 @@ union TData {
 #define __TEXTURE_FUNCTIONS_DECL__ static inline __device__
 
 
-#if (__hcc_workweek__ >= 18114)
+#if (__hcc_workweek__ >= 18114) || __clang__
 #define ADDRESS_SPACE_CONSTANT __attribute__((address_space(4)))
 #else
 #define ADDRESS_SPACE_CONSTANT __attribute__((address_space(2)))