RFR: 8267532: C2: Profile and prune untaken exception handlers [v5]

Wed Nov 15 22:28:36 UTC 2023

On Wed, 15 Nov 2023 21:08:23 GMT, Dean Long <dlong at openjdk.org> wrote:

> Is it possible for C1 to see a monitorexit but not the earlier monitorenter?

Hm, good question, Dean. I was under impression that there are no guarantees C1 visits all reachable bytecodes of a method during parsing, so `monitorenter` can be missed. But after reexamining `GraphBuilder` implementation I don't think it is possible.

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PR Comment: https://git.openjdk.org/jdk/pull/16416#issuecomment-1813359774