RFR: 8373697: AArch64: Remove deoptimization stub code for nmethods with small stack frames

[Ruben]

On Wed, 17 Dec 2025 02:23:43 GMT, Dean Long <dlong at openjdk.org> wrote:

>> Removal of deoptimization stub codes improves density of compiled code.
>> It is possible at least for methods with relatively small stack frames.
>
> src/hotspot/share/opto/output.cpp line 1794:
> 
>> 1792:     }
>> 1793:     // Emit the deopt handler code if needed.
>> 1794:     if (AlwaysEmitDeoptStubCode
> 
> I count 5 times this same expression is repeated.  Maybe it would make sense to move it to an inlined helper function.

I will add a helper function for this.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28857#discussion_r2630696744