On Fri, 26 Feb 2021 13:55:15 GMT, Vladimir Ivanov <vliva...@openjdk.org> wrote:
> IMO the fix should be in > `src/jdk.incubator.vector/share/classes/jdk/incubator/vector/VectorShape.java`. > > JVM does the right job when it signals vector support is absent (by returning > `-1`). > > `jdk.incubator.vector` implementation should take that into account and > choose a preferred shape for pure Java execution mode. Hi @iwanowww , Thanks for your review. >From the view of C2 compiler, you are right. But the Java programmer may be confused if we got something like DoubleVector.SPECIES_PREFERRED.length() > VectorSupport.getMaxLaneCount(double.class). I'd like to keep DoubleVector.SPECIES_PREFERRED.length() <= VectorSupport.getMaxLaneCount(double.class) for Java programmers since the VectorSupport_GetMaxLaneCount is used to implement a Java API. What do you think? Thanks. ------------- PR: https://git.openjdk.java.net/jdk/pull/2722
