RFR: 8353359: C2: Or(I|L)Node::Ideal is missing AddNode::Ideal call [v2]

[Hannes Greule]

> Hi,
> 
> this simple change adds a missing AddNode::Ideal call to Or(I|L)Node::Ideal. See the added tests for examples of optimizations that don't apply without this change.
> 
> Please let me know what you think.

Hannes Greule has updated the pull request incrementally with two additional commits since the last revision:

 - update license year
 - add bug id

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/24348/files
  - new: https://git.openjdk.org/jdk/pull/24348/files/f7fb76da..2584807a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24348&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24348&range=00-01

  Stats: 4 lines in 2 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/24348.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24348/head:pull/24348

PR: https://git.openjdk.org/jdk/pull/24348