RFR: 8286669: Replace MethodHandle specialization with ASM in mainline

[liach]

On Thu, 12 May 2022 17:17:37 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> Hi,
> 
> This PR brings over commits from the panama-foreign repo. These commits mostly pertain to the switch to ASM and away from MethodHandle combinators for the binding recipe specialization. But, there is one more commit which adds freeing of downcall stubs, since those changes were mostly Java as well.
> 
> Thanks,
> Jorn

test/micro/org/openjdk/bench/java/lang/foreign/LinkUpcall.java line 61:

> 59:             BLANK = lookup().findStatic(LinkUpcall.class, "blank", MethodType.methodType(void.class));
> 60:         } catch (ReflectiveOperationException e) {
> 61:             throw new BootstrapMethodError(e);

You probably mean exception in initializer error.

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PR: https://git.openjdk.java.net/jdk/pull/8685