[NFCI][SYCL] Don't use builtins' internals in ext_oneapi_native_math impl (#13154)

Old builtins implementation is soon to be dropped during ABI breaking
window. Ensure that this extension implementation doesn't rely on it.

Author: aelovikov-intel

sycl/include/sycl/ext/oneapi/experimental/builtins.hpp

@@ -98,7 +98,7 @@ tanh(T x) __NOEXC {
   return sycl::detail::convertFromOpenCLTypeFor<T>(
       __clc_native_tanh(sycl::detail::convertToOpenCLType(x)));
 #else
-  return __sycl_std::__invoke_tanh<T>(x);
+  return sycl::tanh(x);
 #endif
 }
 
@@ -120,16 +120,15 @@ inline __SYCL_ALWAYS_INLINE
 #if defined(__SYCL_DEVICE_ONLY__) && defined(__NVPTX__)
     auto partial_res = native::tanh(sycl::detail::to_vec2(x, i * 2));
 #else
-    auto partial_res = __sycl_std::__invoke_tanh<sycl::vec<T, 2>>(
-        sycl::detail::to_vec2(x, i * 2));
+    auto partial_res = sycl::tanh(sycl::detail::to_vec2(x, i * 2));
 #endif
     sycl::detail::memcpy(&res[i * 2], &partial_res, sizeof(vec<T, 2>));
   }
   if (N % 2) {
 #if defined(__SYCL_DEVICE_ONLY__) && defined(__NVPTX__)
     res[N - 1] = native::tanh(x[N - 1]);
 #else
-    res[N - 1] = __sycl_std::__invoke_tanh<T>(x[N - 1]);
+    res[N - 1] = sycl::tanh(x[N - 1]);
 #endif
   }
 
@@ -147,7 +146,7 @@ inline __SYCL_ALWAYS_INLINE
   return sycl::detail::convertFromOpenCLTypeFor<T>(
       __clc_native_exp2(sycl::detail::convertToOpenCLType(x)));
 #else
-  return __sycl_std::__invoke_exp2<T>(x);
+  return sycl::exp2(x);
 #endif
 }
 
@@ -162,16 +161,15 @@ exp2(sycl::marray<half, N> x) __NOEXC {
 #if defined(__SYCL_DEVICE_ONLY__) && defined(__NVPTX__)
     auto partial_res = native::exp2(sycl::detail::to_vec2(x, i * 2));
 #else
-    auto partial_res = __sycl_std::__invoke_exp2<sycl::vec<half, 2>>(
-        sycl::detail::to_vec2(x, i * 2));
+    auto partial_res = sycl::exp2(sycl::detail::to_vec2(x, i * 2));
 #endif
     sycl::detail::memcpy(&res[i * 2], &partial_res, sizeof(vec<half, 2>));
   }
   if (N % 2) {
 #if defined(__SYCL_DEVICE_ONLY__) && defined(__NVPTX__)
     res[N - 1] = native::exp2(x[N - 1]);
 #else
-    res[N - 1] = __sycl_std::__invoke_exp2<half>(x[N - 1]);
+    res[N - 1] = sycl::exp2(x[N - 1]);
 #endif
   }
   return res;