Proud of this patch I landed to Ruby this week which makes constants inside of `class << self` scopes faster both in the interpreter and JITs. It's not the most complicated or even impactful, but something I've wanted to fix for years github.com/ruby/ruby/pu...
This aims to allow constant cache accesses inside a singleton CREF to use the same fastpath as most constant caches, without needing to re-check the CREF on every access.
class Foo
def self.foo1
...
