swift

9cb01132 - SILOptimizer: add a utility to check if a generic nominal type's layout is dependent on its generic parameters

SILOptimizer: add a utility to check if a generic nominal type's layout is dependent on its generic parameters This is usually the case. Some examples, where they layout is _not_ dependent: ``` struct S<T> { var x: Int // no members which depend on T } struct S<T> { var c: SomeClass<T> // a class reference does not depend on the layout of the class } ```