RFR: 8305618: Move gcold out of tier1

[Aleksey Shipilev]

On Wed, 5 Apr 2023 13:06:43 GMT, Leo Korinth <lkorinth at openjdk.org> wrote:

> I can add tier1_gc_gcold to tier2 or tier3 (and rename it to correct tier number), or I could just remove it and it will run in tier4. What do you prefer?

I prefer tier3. GC stress tests belong there, I think.

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PR Comment: https://git.openjdk.org/jdk/pull/13340#issuecomment-1497833746