RFR: 8329962: Remove CardTable::invalidate

[Guoxiong Li]

On Tue, 9 Apr 2024 13:44:22 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple converting redundant if-check to assert.

The `CardTable::invalidate` can dirty a memory region cross generational boundary. But actually, we always only want to dirty the regions of one of the two generations instead of crossing them. So it is good to remove `CardTable::invalidate`.

Is my understanding above right?

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PR Comment: https://git.openjdk.org/jdk/pull/18696#issuecomment-2050915367