RFR: 8294578: [PPC64] C2: Missing is_oop information when using disjoint compressed oops mode [v2]

[Martin Doerr]

On Thu, 29 Sep 2022 13:14:58 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> Fix missing is_oop information shown by assertion `assert(t->base() == Type::Int || t->base() == Type::Half || t->base() == Type::FloatCon || t->base() == Type::FloatBot) failed: Unexpected type`. See JBS issue for details.
>
> Martin Doerr has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Revert decodeN_Disjoint_isel_Ex part. Not needed.

Thanks for the review!

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PR: https://git.openjdk.org/jdk/pull/10484