RFR: 8288302: Shenandoah: SIGSEGV in vm maybe related to jit compiling xerces

[Aleksey Shipilev]

On Thu, 29 Sep 2022 14:31:16 GMT, Roland Westrelin <roland at openjdk.org> wrote:

> During igvn, at a heap stable test, a dominating heap stable test is
> found that can be used to optimize out the current one. But this area
> of the graph is actually dying and the current test has lost one of
> its projection already, something the logic doesn't expect and which
> causes the crash. The fix I propose is to simply detect that the heap
> stable test is dying and skip the transformation.

All right, looks reasonable.

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Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.org/jdk/pull/10491