RFR: 8280003: C1: Reconsider uses of logical_and immediates in LIRGenerator::do_getObjectSize [v3]

[Aleksey Shipilev]

On Wed, 19 Jan 2022 16:44:34 GMT, Sergey Nazarkin <snazarki at openjdk.org> wrote:

>> How is it strict? We are about to cast to _unsigned int_, surely we want to test that the value is in range of unsigned int?
>
> The method is correct but a bit unoptimal. I may be wrong, but _x_ is signed variable and may contain negative value that fits _logic_and_ (like ~0xFF00)

All right, let me just blindly cast to "unsigned int" then. If this is the problem in ARM32, it can be fixed by follow-up bug. See new commit.

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PR: https://git.openjdk.java.net/jdk/pull/7080