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

Andrew Haley aph at redhat.com
Mon Apr 23 18:23:41 UTC 2018

On 04/23/2018 05:18 PM, Roland Westrelin wrote:
> java -XX:-UseCountedLoopSafepoints -jar target/benchmarks.jar -prof perfasm -wi 5 -i 5 -f 1  org.sample.DotProduct.dotProduct
> should work whether you applied the patch for this RFR or not.  See
> below for a sample output.

OK, thanks.  It was my local problem with patches and builds.  AArch64
works fine.

Having said that, the code without vectorization is dreadful, but
that's an unrelated matter.

Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671

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