Integrated: 8036580: CHA: improve default method support

[Vladimir Ivanov]

On Wed, 26 May 2021 22:48:15 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

> Enable CHA to look for unique concrete methods under default interface methods.
> Only vtable-based implementation is affected. Old implementation is left as is.
> 
> The unit test requires #4211/#4212 to pass and relies on test code refactorings from #4213.
> 
> Testing:
> - [x] hs-tier1 - hs-tier9

This pull request has now been integrated.

Changeset: 74b70a56
Author:    Vladimir Ivanov <vlivanov at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/74b70a56774e7bf716356cf38395f8e7d7dadc78
Stats:     238 lines in 6 files changed: 216 ins; 9 del; 13 mod

8036580: CHA: improve default method support

Reviewed-by: thartmann, neliasso

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PR: https://git.openjdk.java.net/jdk/pull/4214