Please review: Bug: https://bugs.openjdk.java.net/browse/JDK-8069338 Webrev: http://cr.openjdk.java.net/~hannesw/8069338/webrev.00/
This implements shared scope calls for optimistic vars/calls. I followed Attila’s blueprint in the bug description to the last detail - thanks for figuring it all out. Some adjustments and cleanups I did along the way: - Originally shared scope calls were designed to support slow scope vars (with/eval). However, that feature was disabled later on. I refactored the code to make it clear that we only do shared scope calls for fast scope operations. - I unified the threshold for all shared scope operations to 5. I don’t think there is a reason for different thresholds for different operations. I did some testing, using 5 as threshold appeared to be a sensible value. Running all of the octane benchmark I see a decrease in created callsites (200 000 to 178 000) and a slight decrease in callsite invalidations. Hannes
