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Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8276879	17.0.3-oracle	Yi Yang	P4	Resolved	Fixed	b01
JDK-8276747	17.0.2	Yi Yang	P4	Resolved	Fixed	b04

Add the following identical equations for Add and Xor node, respectively.

~(x-1) => -x
~x + 1 => -x

backported by

JDK-8276747 C2: Improve Add and Xor ideal optimizations

JDK-8276879 C2: Improve Add and Xor ideal optimizations

relates to

JDK-8273868 Add IR tests for JDK-8273021

JDK-8279607 Existing optimization "~x+1" -> "-x" can be generalized to "~x+c" -> "(c-1)-x".

links to

Commit openjdk/jdk17u/e829c856

Commit openjdk/jdk/a73c06de

Review openjdk/jdk17u/222

Review openjdk/jdk/5266

(3 links to)