[aarch64-port-dev ] git: openjdk/aarch64-port: master: 8273454: C2: Transform (-a)*(-b) into a*b

[Zhengyu Gu]

Changeset: 7c9868c0
Author:    Zhengyu Gu <zgu at openjdk.org>
Date:      2021-09-18 23:11:06 +0000
URL:       https://git.openjdk.java.net/aarch64-port/commit/7c9868c0b3c9bd3d305e71f91596190813cdccce

8273454: C2: Transform (-a)*(-b) into a*b

Reviewed-by: thartmann, eliu, chagedorn

! src/hotspot/share/opto/mulnode.cpp
+ test/hotspot/jtreg/compiler/integerArithmetic/TestNegMultiply.java