Tidy up conditional compilation.

Signed-off-by: Julian Oppermann <[email protected]>

Author: jopperm

sycl/source/detail/kernel_compiler/kernel_compiler_sycl.cpp

@@ -317,57 +317,38 @@ bool SYCL_Compilation_Available() {
 #endif
 
 #if SYCL_EXT_JIT_ENABLE
-
 #include "../jit_compiler.hpp"
+#endif
 
 namespace sycl {
 inline namespace _V1 {
 namespace ext::oneapi::experimental {
 namespace detail {
 
 bool SYCLJIT_Compilation_Available() {
+#if SYCL_EXT_JIT_ENABLE
   return sycl::detail::jit_compiler::get_instance().isAvailable();
+#else
+  return false;
+#endif
 }
 
-spirv_vec_t
-SYCLJIT_to_SPIRV(const std::string &SYCLSource, include_pairs_t IncludePairs,
-                 const std::vector<std::string> &UserArgs, std::string *LogPtr,
-                 const std::vector<std::string> &RegisteredKernelNames) {
+spirv_vec_t SYCLJIT_to_SPIRV(
+    [[maybe_unused]] const std::string &SYCLSource,
+    [[maybe_unused]] include_pairs_t IncludePairs,
+    [[maybe_unused]] const std::vector<std::string> &UserArgs,
+    [[maybe_unused]] std::string *LogPtr,
+    [[maybe_unused]] const std::vector<std::string> &RegisteredKernelNames) {
+#if SYCL_EXT_JIT_ENABLE
   return sycl::detail::jit_compiler::get_instance().compileSYCL(
       SYCLSource, IncludePairs, UserArgs, LogPtr, RegisteredKernelNames);
-}
-
-} // namespace detail
-} // namespace ext::oneapi::experimental
-} // namespace _V1
-} // namespace sycl
-
 #else
-
-namespace sycl {
-inline namespace _V1 {
-namespace ext::oneapi::experimental {
-namespace detail {
-
-bool SYCLJIT_Compilation_Available() { return false; }
-
-spirv_vec_t
-SYCLJIT_to_SPIRV(const std::string &SYCLSource, include_pairs_t IncludePairs,
-                 const std::vector<std::string> &UserArgs, std::string *LogPtr,
-                 const std::vector<std::string> &RegisteredKernelNames) {
-  (void)SYCLSource;
-  (void)IncludePairs;
-  (void)UserArgs;
-  (void)LogPtr;
-  (void)RegisteredKernelNames;
-
   throw sycl::exception(sycl::errc::build,
                         "kernel_compiler via sycl-jit is not available");
+#endif
 }
 
 } // namespace detail
 } // namespace ext::oneapi::experimental
 } // namespace _V1
 } // namespace sycl
-
-#endif // SYCL_EXT_JIT_ENABLE