RFR: 8341834: C2 compilation fails with "bad AD file" due to Replicate [v3]

[Roland Westrelin]

> Superword creates a `Replicate` node at a `ConvL2I` node and uses the
> type of the result of the `ConvL2I` to pick the type of the
> `Replicate` instead of the type of the input to the `ConvL2I`.

Roland Westrelin 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 four additional commits since the last revision:

 - Merge branch 'master' into JDK-8341834
 - review
 - test
 - fix

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21660/files
  - new: https://git.openjdk.org/jdk/pull/21660/files/1070696f..9219a292

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21660&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21660&range=01-02

  Stats: 174646 lines in 1487 files changed: 23955 ins; 144716 del; 5975 mod
  Patch: https://git.openjdk.org/jdk/pull/21660.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21660/head:pull/21660

PR: https://git.openjdk.org/jdk/pull/21660