RFR(S): 8200477: Integer dot product no longer autovectorised

Vladimir Kozlov vladimir.kozlov at oracle.com
Wed Apr 18 01:13:08 UTC 2018

Seems fine. Fix comment too, please. I start testing.

did you verified that code is vectorized with your changes?


On 4/10/18 7:54 AM, Roland Westrelin wrote:
> http://cr.openjdk.java.net/~roland/8200477/webrev.00/
> Superword only allows reduction to have Phi uses but with loop strip
> mining, there's a safepoint use as well. In any case, the check for only
> Phi uses seems too strict to me. So I replaced it with a check for only
> uses out of loop.
> Roland.

More information about the hotspot-compiler-dev mailing list