[jdk17u-dev] RFR: 8286177: C2: "failed: non-reduction loop contains reduction nodes" assert failure [v2]

[Goetz Lindenmaier]

> I backport this for parity with 17.0.5-oracle.
> 
> I had to resolve the removal of the assertion in superword.cpp

Goetz Lindenmaier 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.

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

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/495/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/495/files/594456fe..594456fe

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=495&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=495&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/495.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/495/head:pull/495

PR: https://git.openjdk.org/jdk17u-dev/pull/495