RFR: 8292059: Do not inline InstanceKlass::allocate_instance()

[Afshin Zafari]

On Tue, 28 Feb 2023 11:11:54 GMT, Afshin Zafari <duke at openjdk.org> wrote:

> The inline and not-inline versions of the method is stress tested to compare the performance difference. The statistics are drawn in the following chart.
> ![chart (2)](https://user-images.githubusercontent.com/4697012/221848555-2884313e-9d26-41c9-a265-3f1ce295b17b.png)
> 
> The vertical axis is in milliseconds.

> 

New chart is uploaded. Vertical axis unit is milliseconds.

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PR: https://git.openjdk.org/jdk/pull/12782