Merge pull request #89 from r-devulap/clang-cl

Disable prefetch on clang-cl WIN32

Author: Raghuveer Devulapalli

src/avx512-common-qsort.h

@@ -451,18 +451,28 @@ X86_SIMD_SORT_INLINE arrsize_t partition_avx512_unrolled(type_t *arr,
             X86_SIMD_SORT_UNROLL_LOOP(8)
             for (int ii = 0; ii < num_unroll; ++ii) {
                 curr_vec[ii] = vtype::loadu(arr + right + ii * vtype::numlanes);
+                /*
+                 * error: '_mm_prefetch' needs target feature mmx on clang-cl
+                 */
+#if !(defined(_MSC_VER) && defined(__clang__))
                 _mm_prefetch((char *)(arr + right + ii * vtype::numlanes
                                       - num_unroll * vtype::numlanes),
                              _MM_HINT_T0);
+#endif
             }
         }
         else {
             X86_SIMD_SORT_UNROLL_LOOP(8)
             for (int ii = 0; ii < num_unroll; ++ii) {
                 curr_vec[ii] = vtype::loadu(arr + left + ii * vtype::numlanes);
+                /*
+                 * error: '_mm_prefetch' needs target feature mmx on clang-cl
+                 */
+#if !(defined(_MSC_VER) && defined(__clang__))
                 _mm_prefetch((char *)(arr + left + ii * vtype::numlanes
                                       + num_unroll * vtype::numlanes),
                              _MM_HINT_T0);
+#endif
             }
             left += num_unroll * vtype::numlanes;
         }