RFR: 8280469: C2: CHA support for interface calls when inlining through method handle linker

Vladimir Ivanov vlivanov at openjdk.org
Fri Oct 31 21:51:17 UTC 2025


Expand the optimization for interface calls introduced by [JDK-6986483](https://bugs.openjdk.org/browse/JDK-6986483) to calls through `MethodHandle.linkToInterface`.

The implementation is straightforward except the fact that symbolic information is lost during `MemberName` resolution. The fix uses declaring class instead, but it's more conservative than what is done for invokeinterface case.  

Testing: hs-tier1 - hs-tier5

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Commit messages:
 - Handle -XX:+StressMethodHandleLinkerInlining
 - fix

Changes: https://git.openjdk.org/jdk/pull/28094/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=28094&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8280469
  Stats: 205 lines in 4 files changed: 173 ins; 2 del; 30 mod
  Patch: https://git.openjdk.org/jdk/pull/28094.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28094/head:pull/28094

PR: https://git.openjdk.org/jdk/pull/28094


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