rust-lang/rust — pull request #18272 by dotdash (2014-10-24 09:15:08+00:00)
Title: Make MIN_ALIGN a const to allow better optimization

With MIN_ALIGN as a static, other crates don't have access to its value
at compile time, because it is an extern global. That means that the
checks against it can't be optimized out, which is rather unfortunate.
So let's make it a constant instead.