RFR: 8348411: C2: Remove the control input of LoadKlassNode and LoadNKlassNode [v4]

[Emanuel Peter]

On Tue, 4 Feb 2025 18:54:21 GMT, Quan Anh Mai <qamai at openjdk.org> wrote:

>> src/hotspot/share/opto/parseHelper.cpp line 193:
>> 
>>> 191:       // See issue JDK-8057622 for details.
>>> 192: 
>>> 193:     always_see_exact_class = true;
>> 
>> Why is it ok to remove this?
>> If this branch is not taken, it used to be `false`, and would lead to something different below...
>
> The only use of this is to decide if we need to attach a control input to the `LoadKlass`. As the control input is not needed, this can be removed.

Got it, thanks!

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PR Review Comment: https://git.openjdk.org/jdk/pull/23274#discussion_r1942528816