On Thu, May 22, 2025 at 3:31 PM John R Rose <jr...@openjdk.org> wrote:
> > Update benchmark to reflect new fill method > > Related discussion at the hardware level: > > https://github.com/openjdk/jdk/pull/25147#issuecomment-2902463076 > This discussion spurred me to ask a dumb question. Apologies in advance, just trying to learn here... If I do this: import java.util.Arrays; public class ArrayFiller { public static void main(String[] args) { while (true) { final byte[] array = new byte[1000000]; Arrays.fill(array, (byte)0x42); } } } Will C2 compile Arrays.fill() <https://github.com/openjdk/jdk/blob/139a05d05959a84541a29dfae6151f92ce579ae6/src/java.base/share/classes/java/util/Arrays.java#L3275-L3308> into something that is more efficient than a byte-at-a-time loop like what appears in the source code? Thanks, -Archie -- Archie L. Cobbs
