RFR: 8330851: C2: More efficient TypeFunc creation [v2]

[Amit Kumar]

> Lazy computation of TypeFunc.
> 
> Testing: Tier1 on Fastdebug & Release VMs (`s390x architecture`)

Amit Kumar has updated the pull request incrementally with one additional commit since the last revision:

  refactor

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21782/files
  - new: https://git.openjdk.org/jdk/pull/21782/files/6ef29d21..a3a90b23

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21782&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21782&range=00-01

  Stats: 126 lines in 3 files changed: 65 ins; 60 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21782.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21782/head:pull/21782

PR: https://git.openjdk.org/jdk/pull/21782