[jdk18] RFR: 8278489: Preserve result in native wrapper with +UseHeavyMonitors [v3]

[Roman Kennke]

> Testing observed a few failures after JDK-8276901. The reason for the failures is in the native-wrappers, in the +UseHeavyMonitors paths, we don't preserve the result register after the native call.
> 
> Testing:
>  - [x] java/awt/color, sun/java2d/cmm tests (x86_32, x86_64, aarch64 x -UseHeavyMonitors, +UseHeavyMonitors)
>  - [x] tier1 (x86_32, x86_64, aarch64 x -UseHeavyMonitors, +UseHeavyMonitors)

Roman Kennke has updated the pull request incrementally with one additional commit since the last revision:

  AArch64 port

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

Changes:
  - all: https://git.openjdk.java.net/jdk18/pull/16/files
  - new: https://git.openjdk.java.net/jdk18/pull/16/files/c77c877d..7a44dcc7

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk18&pr=16&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk18&pr=16&range=01-02

  Stats: 7 lines in 1 file changed: 2 ins; 1 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk18/pull/16.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18 pull/16/head:pull/16

PR: https://git.openjdk.java.net/jdk18/pull/16