On Tue, 7 Jun 2022 17:14:18 GMT, Quan Anh Mai <[email protected]> wrote:
> Hi,
>
> This patch implements intrinsics for `Integer/Long::compareUnsigned` using
> the same approach as the JVM does for long and floating-point comparisons.
> This allows efficient and reliable usage of unsigned comparison in Java,
> which is a basic operation and is important for range checks such as
> discussed in #8620 .
>
> Thank you very much.
I have added a benchmark for the intrinsic. The result is as follows, thanks a
lot:
Before After
Benchmark (size) Mode Cnt Score Error Score Error
Units
Integers.compareUnsigned 500 avgt 15 0.527 ± 0.002 0.498 ± 0.011
us/op
Longs.compareUnsigned 500 avgt 15 0.677 ± 0.014 0.561 ± 0.006
us/op
-------------
PR: https://git.openjdk.java.net/jdk/pull/9068
