[riscv-port-jdk11u:riscv-port] RFR: 8328065: RISC-V: Add isolation for shared code changes

[Gui Cao]

On Wed, 20 Mar 2024 07:07:52 GMT, Andreas Schwab <duke at openjdk.org> wrote:

> There are a few leftover changes:
> 
> * make/autoconf/libraries.m4 is no longer modified due to 8316645, but
>   still has the copyright date change.
> * spurious space change in src/hotspot/cpu/ppc/c1_LIRAssembler_ppc.cpp
> * another copyright date change in unmodified src/hotspot/share/opto/regmask.hpp

Yes, I will prepare another PR to cleanup those trivial leftover changes.

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PR Comment: https://git.openjdk.org/riscv-port-jdk11u/pull/11#issuecomment-2008999955