[jdk17u-dev] RFR: 8313262: C2: Sinking node may cause required cast to be dropped [v2]

[Aleksey Shipilev]

> Clean backport to fix recent JDK 17 backport regression.
> 
> Additional testing:
>  - [x] New test fails without the fix, passes with it
>  - [x] Linux x86_64 fastdebug `tier1 tier2 tier3`

Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into JDK-8313262-c2-sinking-node
 - Backport 1cee3b9fd9720e7938029a6992460b9053e65e57

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/1690/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/1690/files/c94da7e7..2cb00f49

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1690&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1690&range=00-01

  Stats: 22 lines in 5 files changed: 3 ins; 10 del; 9 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1690.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1690/head:pull/1690

PR: https://git.openjdk.org/jdk17u-dev/pull/1690