RFR: 8279523: Parallel: Remove unnecessary PSScavenge::_to_space_top_before_gc

[Hamlin Li]

On Wed, 5 Jan 2022 16:09:01 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> Simple change of removing an unnecessary field.
> 
> Test: hotspot_gc

src/hotspot/share/gc/parallel/psScavenge.inline.hpp line 49:

> 47:     // Skip objects copied to to_space since the scavenge started.
> 48:     HeapWord* const addr = cast_from_oop<HeapWord*>(obj);
> 49:     return addr < to_space->bottom() || addr >= to_space->end();

Not sure if I understand this correctly, is this a typo or intended from top to bottom?

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PR: https://git.openjdk.java.net/jdk/pull/6968