[master] RFR: Load Klass from header, C1 [v9]

[Roman Kennke]

> This implements loading the Klass* from object header (instead of dedicated Klass* field) in C1 generated code.
> 
> Testing:
>  - [x] tier1 (x86_64,x86_32, aarch64)
>  - [x] tier2 (x86_64,x86_32, aarch64)
>  - [x] tier3 (x86_64,x86_32, aarch64)
>  - [ ] tier4 (x86_64,x86_32, aarch64)

Roman Kennke has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  AArch64 implementation

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

Changes:
  - all: https://git.openjdk.java.net/lilliput/pull/20/files
  - new: https://git.openjdk.java.net/lilliput/pull/20/files/e4dee271..5dcd4b55

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=lilliput&pr=20&range=08
 - incr: https://webrevs.openjdk.java.net/?repo=lilliput&pr=20&range=07-08

  Stats: 62 lines in 9 files changed: 43 ins; 6 del; 13 mod
  Patch: https://git.openjdk.java.net/lilliput/pull/20.diff
  Fetch: git fetch https://git.openjdk.java.net/lilliput pull/20/head:pull/20

PR: https://git.openjdk.java.net/lilliput/pull/20