Hi, yet another String concat startup/footprint optimization.
As the subject implies, we could fold the initialLengthCoder it into the final mixer. This way we end up with one less bound argument into the larger method handle combinator tree, with fewer species classes and lambda forms generated as a result. This means a significant speed-up on several startup and footprint tests, and especially noticeable on realistic workloads that just have a few different small concat shapes. Bug: https://bugs.openjdk.java.net/browse/JDK-8223454 Webrev: http://cr.openjdk.java.net/~redestad/8223454/open.00/ Thanks! /Claes
