[aarch64-port-dev ] RFR: AARCH64: RewriteFrequentPairs optimization

[Alexeev, Alexander]

Hello


Could somebody review the patch [1] and sponsor if approved?


Patch implements RewriteFrequentPairs optimization for aarch64.


It was tested with hotspot's jtreg test suite and DaCapo benchmark avrora executed in interpretation mode.


Hotspot tests:

Before:

Test results: passed: 801; failed: 47; error: 1

After

Test results: passed: 801; failed: 47; error: 1


Dacapo:

$java -Xint -XX:+RewriteFrequentPairs -jar dacapo-9.12-bach.jar avrora

===== DaCapo 9.12 avrora starting =====
===== DaCapo 9.12 avrora PASSED in 45085 msec =====



[1] https://googledrive.com/host/0B5VQvD5uJjDQfnF4eVJYT1pPS2UxQ0N1YUJNQ0VBZy1SM3pCOVBUMk5WTlFsLVBTd2ZPT3c/webrev/