RFR: 8304880: [PPC64] VerifyOops code in C1 doesn't work with ZGC

[Aleksey Shipilev]

On Fri, 24 Mar 2023 15:27:53 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

> I suggest to remove this code for the following reasons:
> - It doesn't work with ZGC (oop needs to go through load barrier, see JBS issue).
> - It generates too much code. Loading oops is quite common and the oop verification code is quite lengthy.
> - Other platforms don't have it, either.

Marked as reviewed by shade (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/13175#pullrequestreview-1357094301