RFR: 8310848: Convert ClassDesc and MethodTypeDesc to be stored in static final fields

Sun Jun 25 03:08:10 UTC 2023

This would encourage Classfile API users to use the descriptors as constants, which can improve performance by avoiding repeated validation and reusing cached descriptor strings for MethodTypeDesc. This patch updates usages in the main codebase and benchmarks; tests are left untouched.

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Commit messages:
 - 8310848: Convert ClassDesc and MethodTypeDesc to be stored in static final fields

Changes: https://git.openjdk.org/jdk/pull/14640/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14640&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8310848
  Stats: 242 lines in 6 files changed: 62 ins; 93 del; 87 mod
  Patch: https://git.openjdk.org/jdk/pull/14640.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14640/head:pull/14640

PR: https://git.openjdk.org/jdk/pull/14640