SC: <=> compiled to ScriptBytecodeAdapter#compareTo for primitives

Consider the following:

@groovy.transform.CompileStatic
int cmp(int a, int b) {
  a <=> b
}

"a <=> b" for primitive types is not optimized to make use of Integer#compare or similar – instead it is transformed into ScriptBytecodeAdapter.compareTo(a,b)