[jdk17u-dev] RFR: 8201516: DebugNonSafepoints generates incorrect information [v2]

[Andrei Pangin]

> Hi,
>  
> This is a backport of [JDK-8201516: DebugNonSafepoints generates incorrect information](https://github.com/openjdk/jdk/commit/94eda53d98e5011cc613d031ff8941e254eb666b)
>  
> Original patch applies cleanly, except that for the jtreg test where I removed unsupported `phase = CompilePhase.BEFORE_MATCHING`. I verified that the test passes with the patch but fails without.
>  
> Testing: x86_64 build, tier1
> 
> Thanks!

Andrei Pangin 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:

  Updated TestDebugInfo for compatibility with JDK17u

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1268/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1268/files/4ea31720..b57ec393

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1268&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1268&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1268.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1268/head:pull/1268

PR: https://git.openjdk.org/jdk17u-dev/pull/1268