On Wed, 28 Jul 2021 08:51:38 GMT, Andrew Haley <a...@openjdk.org> wrote:
>> I don't think we want to keep two copies of the compareTo intrinsic. If >> there are no cases where the LDP version is worse than the original version >> then we should just delete the old one and replace it with this. > >> I don't think we want to keep two copies of the compareTo intrinsic. If >> there are no cases where the LDP version is worse than the original version >> then we should just delete the old one and replace it with this. > > I agree. The trouble is, what does "worse" mean? I'm looking at SDEN-1982442, > Neoverse N2 errata, 2001293, and I see that LDP has to be slowed down on > streaming workloads, which will affect this. (That's just an example: I'm > making the point that implementations differ.) > > The trouble with this patch is that it (probably) makes things better for > long strings, which are very rare. What we actually need to care about is > performance for a large number of typical-sized strings, which are names, > identifiers, passwords, and so on: about 10-30 characters. Hi, @theRealAph @nick-arm, The test data looks OK on Raspberry Pi 4B and Hisilicon, do you have any other questions about this patch? ------------- PR: https://git.openjdk.java.net/jdk/pull/4722
