solidity/test/libsolidity/semanticTests/immutable/assign_from_immutables.sol

contract C {
	uint immutable public a;
	uint immutable public b;
	uint immutable public c;
	uint immutable public d;

	constructor() {
		a = 1;
		b = a;
		c = b;
		d = c;
	}
}
// ====
// compileViaYul: also
// ----
// a() -> 1
// b() -> 1
// c() -> 1
// d() -> 1