[jdk11u-dev] RFR: 8269574: C2: Avoid redundant uncommon traps in GraphKit::builtin_throw() for JVMTI exception events

[Richard Reingruber]

Hi all,

this pull request contains a backport of commit 72530ef6 from the openjdk/jdk repository. The fix is small and applies cleanly.

I would like to backport this to jdk11u as a fix for the describe performance issue.

The commit being backported was authored by Richard Reingruber on 7 Jul 2021 and was reviewed by Vladimir Kozlov, Roland Westrelin and Nils Eliasson.

Thanks!
Richard.

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Commit messages:
 - Backport 72530ef666ce2ace899cf34faefe715539d1ee25

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/350/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=350&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8269574
  Stats: 14 lines in 1 file changed: 7 ins; 7 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/350.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/350/head:pull/350

PR: https://git.openjdk.java.net/jdk11u-dev/pull/350