RFR: 8330851: C2: More efficient TypeFunc creation

[Amit Kumar]

Lazy computation of TypeFunc.

Testing: Tier1 on Fastdebug & Release VMs (`s390x architecture`)

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Commit messages:
 - extra space
 - inline accessor methods
 - Revert "mac build workaround"
 - final change
 - mac build workaround
 - init change

Changes: https://git.openjdk.org/jdk/pull/21782/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21782&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8330851
  Stats: 894 lines in 5 files changed: 619 ins; 31 del; 244 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