Integrated: 8355775: Improve symbolic sharing in dynamic constant pool entries

[Chen Liang]

On Mon, 28 Apr 2025 20:50:58 GMT, Chen Liang <liach at openjdk.org> wrote:

> Some dynamic constant pool entries with heavy symbolic descriptors currently don't share them, yet they are used by stack map generation, and computing a new descriptor every time introduces a heavy cost.
> 
> This cost is obvious if bytecode generation uses constant dynamic - the stack map generator parses the whole dynamic constant symbol to interpret the return type of an ldc condy, such as in FFM downcalls.
> 
> Both the lack of expensive symbol caching in dynamic cp entries and the incorrect query in StackMapGenerator should be fixed.

This pull request has now been integrated.

Changeset: d7e648bb
Author:    Chen Liang <liach at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/d7e648bb2737362d3cba3350cae63b1013967a66
Stats:     103 lines in 6 files changed: 56 ins; 34 del; 13 mod

8355775: Improve symbolic sharing in dynamic constant pool entries

Reviewed-by: asotona

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PR: https://git.openjdk.org/jdk/pull/24938