Hi, by adding a bridge method in JavaLangAcces to call into the StringConcatHelper.initialCoder - which is done only once during initialization - we can reduce bootstrap overhead of SCF by a few million instructions - ~0.5ms on wall clock measures.
Webrev: http://cr.openjdk.java.net/~redestad/8245094/open.00/ Bug: https://bugs.openjdk.java.net/browse/JDK-8245094 Testing: tier1 Thanks! /Claes
