================
@@ -23,4 +23,20 @@
 #define _CLC_DEF __attribute__((always_inline))
 #endif
 
+#if __OPENCL_C_VERSION__ == CL_VERSION_2_0 ||                                  
\
+    (__OPENCL_C_VERSION__ >= CL_VERSION_3_0 &&                                 
\
+     defined(__opencl_c_generic_address_space))
+#define _CLC_GENERIC_AS_SUPPORTED 1
+// Note that we hard-code the assumption that a non-distinct address space 
means
+// that the target maps the generic address space to the private address space.
+#ifdef __CLC_DISTINCT_GENERIC_ADDRSPACE__
+#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 1
+#else
+#define _CLC_DISTINCT_GENERIC_AS_SUPPORTED 0
+#endif
+#else
----------------
arsenm wrote:

I mean something like
```
#define __libclc_generic_addrspace_val 0
#define __libclc_private_addrspace_val 5

#if __libclc_private_addrspace_val == __libclc_generic_addrspace_val
// ...
#endif

```

https://github.com/llvm/llvm-project/pull/137183
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