RFR: 8292059: Do not inline InstanceKlass::allocate_instance() [v6]

[Afshin Zafari]

> The inline and not-inline versions of the method is tested to compare the performance difference. 
> ### Test
> `make test TEST=micro:Capture0.lambda_01 MICRO="VM_OPTIONS=-XX:TieredStopAtLevel=1" `

Afshin Zafari has updated the pull request incrementally with one additional commit since the last revision:

  8292059: Do not inline InstanceKlass::allocate_instance()

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12782/files
  - new: https://git.openjdk.org/jdk/pull/12782/files/0ef3159a..4165cab8

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12782&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12782&range=04-05

  Stats: 9 lines in 3 files changed: 8 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/12782.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12782/head:pull/12782

PR: https://git.openjdk.org/jdk/pull/12782