[aarch64-port-dev ] [aarch64-port-dev] [10] RFR: 8184049 : Matching rule for ubfiz

[Andrew Haley]

On 25/07/17 14:35, Felix Yang wrote:
>     I tried to modify the test case changing testI2() into:
> 
>     public static int testI2() {
>         return (ia[0] & 0xf) << 30;
>     }
> 
>     Then I got different execution results on aarch64 and x86:
> 
> aarch64:
> java -XX:-TieredCompilation Test
> 2758214541841904631
> 
> x86:
> java -XX:-TieredCompilation Test
> 2758195853365405696

Hmm.  I'm not seeing that problem.  But on the other had, I'm not seeing
the intrinsics used much either: in fact, they seem to be used only once
and are not used in the loop at all.

I've been using the test at
http://cr.openjdk.java.net/~aph/8184049/Test.java

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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