diff --git a/sycl/include/sycl/detail/builtins/helper_macros.hpp b/sycl/include/sycl/detail/builtins/helper_macros.hpp
index 6469f35da3e6c..1f83870c5b70c 100644
--- a/sycl/include/sycl/detail/builtins/helper_macros.hpp
+++ b/sycl/include/sycl/detail/builtins/helper_macros.hpp
@@ -197,7 +197,8 @@
           [](NUM_ARGS##_AUTO_ARG) { return (NS::NAME)(NUM_ARGS##_ARG); },      \
           NUM_ARGS##_ARG);                                                     \
     } else {                                                                   \
-      return __VA_ARGS__(NUM_ARGS##_CONVERTED_ARG);                            \
+      return bit_cast<detail::ENABLER<NUM_ARGS##_TEMPLATE_TYPE>>(              \
+          __VA_ARGS__(NUM_ARGS##_CONVERTED_ARG));                              \
     }                                                                          \
   }
 
diff --git a/sycl/include/sycl/detail/builtins/math_functions.inc b/sycl/include/sycl/detail/builtins/math_functions.inc
index d0e9931dc11d6..72a965c47e274 100644
--- a/sycl/include/sycl/detail/builtins/math_functions.inc
+++ b/sycl/include/sycl/detail/builtins/math_functions.inc
@@ -254,7 +254,9 @@ auto builtin_delegate_ptr_impl(FuncTy F, PtrTy p, Ts... xs) {
   detail::NON_SCALAR_ENABLER<SYCL_CONCAT(LESS_ONE(NUM_ARGS), _TEMPLATE_TYPE),  \
                              PtrTy>                                            \
   NAME(SYCL_CONCAT(LESS_ONE(NUM_ARGS), _TEMPLATE_TYPE_ARG), PtrTy p) {         \
-    return detail::NAME##_impl(SYCL_CONCAT(LESS_ONE(NUM_ARGS), _ARG), p);      \
+    return bit_cast<detail::NON_SCALAR_ENABLER<                                \
+        SYCL_CONCAT(LESS_ONE(NUM_ARGS), _TEMPLATE_TYPE), PtrTy>>(              \
+        detail::NAME##_impl(SYCL_CONCAT(LESS_ONE(NUM_ARGS), _ARG), p));        \
   }
 
 #if __SYCL_DEVICE_ONLY__
diff --git a/sycl/include/sycl/detail/builtins/relational_functions.inc b/sycl/include/sycl/detail/builtins/relational_functions.inc
index e958e5c510425..fea8f59e2993f 100644
--- a/sycl/include/sycl/detail/builtins/relational_functions.inc
+++ b/sycl/include/sycl/detail/builtins/relational_functions.inc
@@ -63,7 +63,7 @@ auto builtin_device_rel_impl(FuncTy F, const Ts &...xs) {
     // the relation builtin (vector of int16_t/int32_t/int64_t depending on the
     // arguments' element type).
     auto ret = F(builtins::convert_arg(xs)...);
-    vec<signed char, num_elements<T>::value> tmp{ret};
+    auto tmp = bit_cast<vec<signed char, num_elements<T>::value>>(ret);
     using res_elem_type = fixed_width_signed<sizeof(get_elem_type_t<T>)>;
     static_assert(is_scalar_arithmetic_v<res_elem_type>);
     return tmp.template convert<res_elem_type>();
diff --git a/sycl/include/sycl/detail/spirv.hpp b/sycl/include/sycl/detail/spirv.hpp
index 4b25ec22393b5..541668ed374d9 100644
--- a/sycl/include/sycl/detail/spirv.hpp
+++ b/sycl/include/sycl/detail/spirv.hpp
@@ -946,11 +946,12 @@ EnableIfNativeShuffle<T> Shuffle(GroupT g, T x, id<1> local_id) {
     return result;
   } else if constexpr (ext::oneapi::experimental::is_user_constructed_group_v<
                            GroupT>) {
-    return __spirv_GroupNonUniformShuffle(group_scope<GroupT>::value,
-                                          convertToOpenCLType(x), LocalId);
+    return convertFromOpenCLTypeFor<T>(__spirv_GroupNonUniformShuffle(
+        group_scope<GroupT>::value, convertToOpenCLType(x), LocalId));
   } else {
     // Subgroup.
-    return __spirv_SubgroupShuffleINTEL(convertToOpenCLType(x), LocalId);
+    return convertFromOpenCLTypeFor<T>(
+        __spirv_SubgroupShuffleINTEL(convertToOpenCLType(x), LocalId));
   }
 #else
   if constexpr (ext::oneapi::experimental::is_user_constructed_group_v<
@@ -987,8 +988,8 @@ EnableIfNativeShuffle<T> ShuffleXor(GroupT g, T x, id<1> mask) {
                                           convertToOpenCLType(x), TargetId);
   } else {
     // Subgroup.
-    return __spirv_SubgroupShuffleXorINTEL(convertToOpenCLType(x),
-                                           static_cast<uint32_t>(mask.get(0)));
+    return convertFromOpenCLTypeFor<T>(__spirv_SubgroupShuffleXorINTEL(
+        convertToOpenCLType(x), static_cast<uint32_t>(mask.get(0))));
   }
 #else
   if constexpr (ext::oneapi::experimental::is_user_constructed_group_v<
@@ -1035,8 +1036,8 @@ EnableIfNativeShuffle<T> ShuffleDown(GroupT g, T x, uint32_t delta) {
                                           convertToOpenCLType(x), TargetId);
   } else {
     // Subgroup.
-    return __spirv_SubgroupShuffleDownINTEL(convertToOpenCLType(x),
-                                            convertToOpenCLType(x), delta);
+    return convertFromOpenCLTypeFor<T>(__spirv_SubgroupShuffleDownINTEL(
+        convertToOpenCLType(x), convertToOpenCLType(x), delta));
   }
 #else
   if constexpr (ext::oneapi::experimental::is_user_constructed_group_v<
@@ -1079,8 +1080,8 @@ EnableIfNativeShuffle<T> ShuffleUp(GroupT g, T x, uint32_t delta) {
                                           convertToOpenCLType(x), TargetId);
   } else {
     // Subgroup.
-    return __spirv_SubgroupShuffleUpINTEL(convertToOpenCLType(x),
-                                          convertToOpenCLType(x), delta);
+    return convertFromOpenCLTypeFor<T>(__spirv_SubgroupShuffleUpINTEL(
+        convertToOpenCLType(x), convertToOpenCLType(x), delta));
   }
 #else
   if constexpr (ext::oneapi::experimental::is_user_constructed_group_v<
diff --git a/sycl/include/sycl/detail/vector_convert.hpp b/sycl/include/sycl/detail/vector_convert.hpp
index bd414b01510a8..d66f869885efc 100644
--- a/sycl/include/sycl/detail/vector_convert.hpp
+++ b/sycl/include/sycl/detail/vector_convert.hpp
@@ -882,6 +882,36 @@ using ConvertBoolAndByteT =
 template <typename DataT, int NumElements>
 template <typename convertT, rounding_mode roundingMode>
 vec<convertT, NumElements> vec<DataT, NumElements>::convert() const {
+#if !__SYCL_USE_LIBSYCL8_VEC_IMPL
+  auto getValue = [this](int Index) {
+    using RetType = typename std::conditional_t<
+        detail::is_byte_v<DataT>, int8_t,
+#ifdef __SYCL_DEVICE_ONLY__
+        typename detail::map_type<
+            DataT,
+#if (!defined(_HAS_STD_BYTE) || _HAS_STD_BYTE != 0)
+            std::byte, /*->*/ std::uint8_t, //
+#endif
+            bool, /*->*/ std::uint8_t,                            //
+            sycl::half, /*->*/ sycl::detail::half_impl::StorageT, //
+            sycl::ext::oneapi::bfloat16,
+            /*->*/ sycl::ext::oneapi::bfloat16::Bfloat16StorageT, //
+            char, /*->*/ detail::ConvertToOpenCLType_t<char>,     //
+            DataT, /*->*/ DataT                                   //
+            >::type
+#else
+        DataT
+#endif
+        >;
+
+#ifdef __SYCL_DEVICE_ONLY__
+    if constexpr (std::is_same_v<DataT, sycl::ext::oneapi::bfloat16>)
+      return sycl::bit_cast<RetType>(this->m_Data[Index]);
+    else
+#endif
+      return static_cast<RetType>(this->m_Data[Index]);
+  };
+#endif
   using T = detail::ConvertBoolAndByteT<DataT>;
   using R = detail::ConvertBoolAndByteT<convertT>;
   using bfloat16 = sycl::ext::oneapi::bfloat16;
diff --git a/sycl/include/sycl/vector.hpp b/sycl/include/sycl/vector.hpp
index 0f274566ebd91..5671dfb514b1d 100644
--- a/sycl/include/sycl/vector.hpp
+++ b/sycl/include/sycl/vector.hpp
@@ -423,9 +423,11 @@ class __SYCL_EBO Swizzle
   using element_type = DataT;
   using value_type = DataT;
 
+#if __SYCL_USE_LIBSYCL8_VEC_IMPL
 #ifdef __SYCL_DEVICE_ONLY__
   using vector_t = typename vec<DataT, NumElements>::vector_t;
 #endif // __SYCL_DEVICE_ONLY__
+#endif
 
   Swizzle() = delete;
   Swizzle(const Swizzle &) = delete;
@@ -497,6 +499,7 @@ class __SYCL_EBO vec :
 
   using Base = detail::vec_base<DataT, NumElements>;
 
+#if __SYCL_USE_LIBSYCL8_VEC_IMPL
 #ifdef __SYCL_DEVICE_ONLY__
   using element_type_for_vector_t = typename detail::map_type<
       DataT,
@@ -541,6 +544,7 @@ class __SYCL_EBO vec :
 
 private:
 #endif // __SYCL_DEVICE_ONLY__
+#endif
 
 #if __SYCL_USE_LIBSYCL8_VEC_IMPL
   template <int... Indexes>
@@ -618,6 +622,7 @@ class __SYCL_EBO vec :
   static constexpr size_t get_size() { return byte_size(); }
   static constexpr size_t byte_size() noexcept { return sizeof(Base); }
 
+#if __SYCL_USE_LIBSYCL8_VEC_IMPL
 private:
   // getValue should be able to operate on different underlying
   // types: enum cl_float#N , builtin vector float#N, builtin type float.
@@ -640,6 +645,8 @@ class __SYCL_EBO vec :
   }
 
 public:
+#endif
+
   // Out-of-class definition is in `sycl/detail/vector_convert.hpp`
   template <typename convertT,
             rounding_mode roundingMode = rounding_mode::automatic>
diff --git a/sycl/test-e2e/DeviceLib/built-ins/printf.cpp b/sycl/test-e2e/DeviceLib/built-ins/printf.cpp
index d7015109d1704..a0e7bff0d939e 100644
--- a/sycl/test-e2e/DeviceLib/built-ins/printf.cpp
+++ b/sycl/test-e2e/DeviceLib/built-ins/printf.cpp
@@ -59,10 +59,11 @@ int main() {
         sycl::vec<int, 4> v4{5, 6, 7, 8};
 #if defined(__SYCL_DEVICE_ONLY__) && (defined(__SPIR__) || defined(__SPIRV__))
         // On SPIRV devices, vectors can be printed via native OpenCL types:
-        using ocl_int4 = sycl::vec<int, 4>::vector_t;
+        using ocl_int4 = int __attribute__((ext_vector_type(4)));
         {
           static const CONSTANT char format[] = "%v4hld\n";
-          ext::oneapi::experimental::printf(format, (ocl_int4)v4);
+          ext::oneapi::experimental::printf(format,
+                                            sycl::bit_cast<ocl_int4>(v4));
         }
 
         // However, you are still able to print them by-element:
diff --git a/sycl/test/basic_tests/generic_type_traits.cpp b/sycl/test/basic_tests/generic_type_traits.cpp
index 3586d25cab588..0d29d635caba1 100644
--- a/sycl/test/basic_tests/generic_type_traits.cpp
+++ b/sycl/test/basic_tests/generic_type_traits.cpp
@@ -134,11 +134,19 @@ int main() {
 #endif
 
 #ifdef __SYCL_DEVICE_ONLY__
+  static_assert(
+      std::is_same_v<d::ConvertToOpenCLType_t<s::vec<s::opencl::cl_int, 2>>,
+                     s::opencl::cl_int __attribute__((ext_vector_type(2)))>);
+  static_assert(
+      std::is_same_v<d::ConvertToOpenCLType_t<s::vec<long long, 2>>,
+                     s::opencl::cl_long __attribute__((ext_vector_type(2)))>);
+#if __SYCL_USE_LIBSYCL8_VEC_IMPL
   static_assert(
       std::is_same_v<d::ConvertToOpenCLType_t<s::vec<s::opencl::cl_int, 2>>,
                      s::vec<s::opencl::cl_int, 2>::vector_t>);
   static_assert(std::is_same_v<d::ConvertToOpenCLType_t<s::vec<long long, 2>>,
                                s::vec<s::opencl::cl_long, 2>::vector_t>);
+#endif
   static_assert(std::is_same_v<
                 d::ConvertToOpenCLType_t<s::multi_ptr<
                     s::opencl::cl_int, s::access::address_space::global_space,
@@ -146,6 +154,16 @@ int main() {
                 s::multi_ptr<s::opencl::cl_int,
                              s::access::address_space::global_space,
                              s::access::decorated::yes>::pointer>);
+  static_assert(
+      std::is_same_v<
+          d::ConvertToOpenCLType_t<
+              s::multi_ptr<s::vec<s::opencl::cl_int, 4>,
+                           s::access::address_space::global_space,
+                           s::access::decorated::yes>>,
+          s::multi_ptr<s::opencl::cl_int __attribute__((ext_vector_type(4))),
+                       s::access::address_space::global_space,
+                       s::access::decorated::yes>::pointer>);
+#if __SYCL_USE_LIBSYCL8_VEC_IMPL
   static_assert(
       std::is_same_v<d::ConvertToOpenCLType_t<
                          s::multi_ptr<s::vec<s::opencl::cl_int, 4>,
@@ -154,6 +172,7 @@ int main() {
                      s::multi_ptr<s::vec<s::opencl::cl_int, 4>::vector_t,
                                   s::access::address_space::global_space,
                                   s::access::decorated::yes>::pointer>);
+#endif
 #endif
   static_assert(std::is_same_v<d::ConvertToOpenCLType_t<s::half>,
                                d::half_impl::BIsRepresentationT>);
diff --git a/sycl/test/basic_tests/vectors/assign.cpp b/sycl/test/basic_tests/vectors/assign.cpp
index 115bb9af9f2dd..df02b9420d7a4 100644
--- a/sycl/test/basic_tests/vectors/assign.cpp
+++ b/sycl/test/basic_tests/vectors/assign.cpp
@@ -56,7 +56,7 @@ static_assert(                  std::is_assignable_v<vec<float, 1>, half>);
 static_assert(                  std::is_assignable_v<vec<float, 1>, float>);
 static_assert(                  std::is_assignable_v<vec<float, 1>, double>);
 #if __SYCL_DEVICE_ONLY__
-static_assert(                  std::is_assignable_v<vec<float, 1>, vec<half, 1>>);
+static_assert(EXCEPT_IN_PREVIEW std::is_assignable_v<vec<float, 1>, vec<half, 1>>);
 #else
 static_assert(EXCEPT_IN_PREVIEW std::is_assignable_v<vec<float, 1>, vec<half, 1>>);
 #endif
@@ -73,7 +73,7 @@ static_assert(                  std::is_assignable_v<vec<float, 2>, half>);
 static_assert(                  std::is_assignable_v<vec<float, 2>, float>);
 static_assert(                  std::is_assignable_v<vec<float, 2>, double>);
 #if __SYCL_DEVICE_ONLY__
-static_assert(                  std::is_assignable_v<vec<float, 2>, vec<half, 1>>);
+static_assert(EXCEPT_IN_PREVIEW std::is_assignable_v<vec<float, 2>, vec<half, 1>>);
 #else
 static_assert(                 !std::is_assignable_v<vec<float, 2>, vec<half, 1>>);
 #endif
diff --git a/sycl/test/basic_tests/vectors/swizzle_aliases.cpp b/sycl/test/basic_tests/vectors/swizzle_aliases.cpp
index 6b331c9d4a9bf..0078370f7ed00 100644
--- a/sycl/test/basic_tests/vectors/swizzle_aliases.cpp
+++ b/sycl/test/basic_tests/vectors/swizzle_aliases.cpp
@@ -8,10 +8,12 @@ int main() {
     sycl::vec<int, 4> X{1};
     static_assert(std::is_same_v<decltype(X.swizzle<0>())::element_type, int>);
     static_assert(std::is_same_v<decltype(X.swizzle<0>())::value_type, int>);
+#if __SYCL_USE_LIBSYCL8_VEC_IMPL
 #ifdef __SYCL_DEVICE_ONLY__
     static_assert(std::is_same_v<decltype(X.swizzle<0>())::vector_t,
                                  sycl::vec<int, 1>::vector_t>);
 #endif // __SYCL_DEVICE_ONLY__
+#endif
   });
   return 0;
 }