RFR: 8322758: Eliminate -Wparentheses warnings in C2 code [v3]

[Kim Barrett]

> Please review this change to eliminate some -Wparentheses warnings.  In most
> cases, this involved simply adding a few parentheses to make some implicit
> operator precedence explicit.
> 
> In PhaseIdealLoop::rc_predicate, I also added a comment describing the test
> being performed, since it didn't seem obvious even with the additional
> parentheses.
> 
> Testing: mach5 tier1
> 
> Also ran mach5 tier1 with these changes in conjunction enabling -Wparentheses
> and other changes needed to make that work.

Kim Barrett has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into c2-wparentheses
 - update copyrights for 2024
 - fix -Wparentheses warnings in C2 code

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17199/files
  - new: https://git.openjdk.org/jdk/pull/17199/files/abacbe0e..2ad3798d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17199&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17199&range=01-02

  Stats: 863 lines in 58 files changed: 610 ins; 44 del; 209 mod
  Patch: https://git.openjdk.org/jdk/pull/17199.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17199/head:pull/17199

PR: https://git.openjdk.org/jdk/pull/17199