[aarch64-port-dev ] git: openjdk/aarch64-port: master: 8273021: C2: Improve Add and Xor ideal optimizations

[Yi Yang]

Changeset: a73c06de
Author:    Yi Yang <yyang at openjdk.org>
Date:      2021-09-13 02:10:45 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/a73c06de2ac47033503189140c0f8ee61fcbceae

8273021: C2: Improve Add and Xor ideal optimizations

Co-authored-by: yulei <lei.yul at alibaba-inc.com>
Reviewed-by: thartmann, kvn

! src/hotspot/share/opto/addnode.cpp
! src/hotspot/share/opto/addnode.hpp
+ test/hotspot/jtreg/compiler/c2/TestAddXorIdeal.java