RFR: 8300255: Introduce interface for GC oop verification in the assembler

[Erik Österlund]

On Mon, 6 Feb 2023 15:32:50 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

> In the assembly code, there is some generic oop verification code. Said verification may or may not fit a particular GC. In particular, it has not worked well for ZGC for a while, and there is an if (UseZGC). This enhancement aims at generalizing this code, such that a collector can have its own oop verification policy.

PPC code contributed by @TheRealMDoerr and RISC-V code contributed by @yadongw. Could you please check that it works on your machines?

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

PR: https://git.openjdk.org/jdk/pull/12443