Allow hip-clang to use amd_mixed_dot as well

[ROCm/clr commit: b0e0ec3c67]

projects/clr/hipamd/include/hip/hcc_detail/hip_fp16.h

@@ -1403,7 +1403,7 @@ THE SOFTWARE.
             }
 
             // Math functions
-            #if (__hcc_workweek__ >= 19015)
+            #if (__hcc_workweek__ >= 19015) || defined(__HIP_CLANG_ONLY__)
             inline
             __device__
             float amd_mixed_dot(__half2 a, __half2 b, float c, bool saturate) {

projects/clr/hipamd/include/hip/hcc_detail/hip_fp16_math_fwd.h

@@ -53,7 +53,7 @@ extern "C"
     typedef _Float16 __2f16 __attribute__((ext_vector_type(2)));
     typedef short __2i16 __attribute__((ext_vector_type(2)));
 
-    #if (__hcc_workweek__ >= 19015)
+    #if (__hcc_workweek__ >= 19015) || defined(__HIP_CLANG_ONLY__)
     __device__ __attribute__((const)) float __ockl_fdot2(__2f16 a, __2f16 b, float c, bool s);
     #endif
 

projects/clr/hipamd/include/hip/hcc_detail/math_functions.h

@@ -121,7 +121,7 @@ uint64_t __make_mantissa(const char* tagp)
 }
 
 // DOT FUNCTIONS
-#if (__hcc_workweek__ >= 19015)
+#if (__hcc_workweek__ >= 19015) || defined(__HIP_CLANG_ONLY__)
 __DEVICE__
 inline
 int amd_mixed_dot(short2 a, short2 b, int c, bool saturate) {

projects/clr/hipamd/include/hip/hcc_detail/math_fwd.h

@@ -29,7 +29,7 @@ THE SOFTWARE.
 #endif
 
 // DOT FUNCTIONS
-#if (__hcc_workweek__ >= 19015)
+#if (__hcc_workweek__ >= 19015) || defined(__HIP_CLANG_ONLY__)
 __device__
 __attribute__((const))
 int __ockl_sdot2(short2 a, short2 b, int c, bool s);