RFR: 8225409: Investigate removal of the Hot Card Cache

Tue Feb 7 11:30:40 UTC 2023

Mostly straightforward removing G1 HotCardCache, as no performance benefit is observed for various benchmarks (specjbb, specjvm, dacapo, etc).

Test: tier1-6

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Commit messages:
 - g1-hcc

Changes: https://git.openjdk.org/jdk/pull/12452/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12452&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8225409
  Stats: 1259 lines in 34 files changed: 50 ins; 1176 del; 33 mod
  Patch: https://git.openjdk.org/jdk/pull/12452.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12452/head:pull/12452

PR: https://git.openjdk.org/jdk/pull/12452