RFR: 8339683: Simplify class data generation in InvokerBytecodeGenerator [v2]

[Chen Liang]

> Elide duplicate field CP entry creation, and reuse elements in the field CP entry for field generation.

Chen Liang has updated the pull request incrementally with one additional commit since the last revision:

  Do not try to classdata non-live lambda forms in pre-generation

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Changes:
  - all: https://git.openjdk.org/jdk/pull/20896/files
  - new: https://git.openjdk.org/jdk/pull/20896/files/1602657d..4f163cb2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20896&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20896&range=00-01

  Stats: 6 lines in 2 files changed: 2 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/20896.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20896/head:pull/20896

PR: https://git.openjdk.org/jdk/pull/20896