RFR: 8254966: Remove unused code from Matcher

Mon Oct 19 17:00:18 UTC 2020

On Sun, 18 Oct 2020 12:11:41 GMT, Claes Redestad <redestad at openjdk.org> wrote:

> These are unused:
> 
> interpreter_method_reg*
> compiler_method_reg*
> pd_implicit_null_fixup (only existed to workaround some Win95 issues)
> 
> Quite some code in the .ad files shook loose when removing these, so I will need some help verifying that the s390 and
> ppc changes are fine.

Good.

-------------

Marked as reviewed by kvn (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/723