RFR: 8286814: Shenandoah: RedefineRunningMethods.java test failed with Loom [v2]

[Zhengyu Gu]

> Please review this patch that fixed failed tests.
> 
> To determine if a barrier is needed for newly allocated `stackChunkOop`, it needs to consider current GC phases, as TAMS and update watermark are specific to corresponding GC phase.
> 
> Test:
> 
> - [x] tier1 with `--enable-preview -XX:+UseShenandoahGC` on Linux x86_64 
> - [x] tier2 with `--enable-preview -XX:+UseShenandoahGC` on Linux x86_64
> - [ ] GHA

Zhengyu Gu has updated the pull request incrementally with one additional commit since the last revision:

  Added space line

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8757/files
  - new: https://git.openjdk.java.net/jdk/pull/8757/files/c565201f..69c24158

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8757&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8757&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8757.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8757/head:pull/8757

PR: https://git.openjdk.java.net/jdk/pull/8757