On Sat, 28 Sep 2024 17:15:43 GMT, Abdelhak Zaaim <d...@openjdk.org> wrote:
> We can improve performance by avoiding repeated array access in the loop.
> Instead of accessing types[i] multiple times, we cache it in a local
> variable. Here's the optimized version `for (int i = 0; i < count; i++) {
> Type current = types[i]; if (!current.isCategory2_2nd()) { if (compressed !=
> i) { types[compressed] = current; } compressed++; } } ` This reduces overhead
> from multiple array lookups.
This will add one more store and one more load operation in the loop when there
is no isCategory2_2nd. The classfile is optimized to be faster at startup and
work better in interpreted mode or C1.
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PR Comment: https://git.openjdk.org/jdk/pull/21227#issuecomment-2381076305
