[jdk17u-dev] RFR: 8274983: C1 optimizes the invocation of private interface methods

[Martin Doerr]

Clean backport of JDK-8274983.

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Commit messages:
 - Backport 21d9ca6cd942ac98a3be2577ded8eaf92dac7d46

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/186/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=186&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274983
  Stats: 119 lines in 2 files changed: 107 ins; 12 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/186.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/186/head:pull/186

PR: https://git.openjdk.java.net/jdk17u-dev/pull/186