Closes gh-1287

oleksandr-pavlyk · oleksandr-pavlyk · commit 7490f29704ac · 2023-07-31T11:00:28.000-05:00
Adds logic in vec_cast to return the input if dstT is the same as
srcT.
diff --git a/dpctl/tensor/libtensor/include/utils/type_utils.hpp b/dpctl/tensor/libtensor/include/utils/type_utils.hpp
@@ -113,7 +113,13 @@ template <typename dstT,
           typename Indices = std::make_index_sequence<N>>
 auto vec_cast(const sycl::vec<srcT, N> &s)
 {
-    return vec_cast_impl<sycl::vec<dstT, N>, sycl::vec<srcT, N>>(s, Indices{});
+    if constexpr (std::is_same_v<srcT, dstT>) {
+        return s;
+    }
+    else {
+        return vec_cast_impl<sycl::vec<dstT, N>, sycl::vec<srcT, N>>(s,
+                                                                     Indices{});
+    }
 }
 
 } // namespace type_utils

Original file line number	Diff line number	Diff line change
`@@ -113,7 +113,13 @@ template <typename dstT,`
`113`	`113`	`typename Indices = std::make_index_sequence<N>>`
`114`	`114`	`auto vec_cast(const sycl::vec<srcT, N> &s)`
`115`	`115`	`{`
`116`		`- return vec_cast_impl<sycl::vec<dstT, N>, sycl::vec<srcT, N>>(s, Indices{});`
	`116`	`+ if constexpr (std::is_same_v<srcT, dstT>) {`
	`117`	`+ return s;`
	`118`	`+ }`
	`119`	`+ else {`
	`120`	`+ return vec_cast_impl<sycl::vec<dstT, N>, sycl::vec<srcT, N>>(s,`
	`121`	`+ Indices{});`
	`122`	`+ }`
`117`	`123`	`}`
`118`	`124`
`119`	`125`	`} // namespace type_utils`