Optimize `SWAP` macro by using move semantics.

core/typedefs.h

@@ -43,6 +43,7 @@
 // Should be available everywhere.
 #include "core/error/error_list.h"
 #include <cstdint>
+#include <utility>
 
 // Ensure that C++ standard is at least C++17. If on MSVC, also ensures that the `Zc:__cplusplus` flag is present.
 static_assert(__cplusplus >= 201703L);
@@ -129,13 +130,7 @@ constexpr auto CLAMP(const T m_a, const T2 m_min, const T3 m_max) {
 
 // Generic swap template.
 #ifndef SWAP
-#define SWAP(m_x, m_y) __swap_tmpl((m_x), (m_y))
-template <typename T>
-inline void __swap_tmpl(T &x, T &y) {
-	T aux = x;
-	x = y;
-	y = aux;
-}
+#define SWAP(m_x, m_y) std::swap((m_x), (m_y))
 #endif // SWAP
 
 /* Functions to handle powers of 2 and shifting. */