RFR: 8374782: Parallel: Investigate removal of specialized objArray iteration code

[Thomas Schatzl]

On Thu, 29 Jan 2026 12:58:01 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

> Hi,
> 
> Please review this change removes specialized local methods used to iterate over array slices in `PSPromotionManager`. Any performance differences between these methods and `objArrayOopDesc::oop_iterate_elements_range` are attributable to differences in inlining behavior. For this reason, `ALWAYSINLINE` is applied. Further investigation is ongoing to improve inlining of calls through `objArrayOopDesc::oop_iterate_elements_range`.
> 
> Testing: Tier 1-3, perf testing with SPECjvm2008-XML.validation.

Marked as reviewed by tschatzl (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29486#pullrequestreview-3737938205