Bug when using DIV

[Yang Zhang]

Hi John

> (BTW, does ARM implement integer divide on vectors?)

Currently, arm doesn't support  div for integer vector either.

Regards
Yang


-----Original Message-----
From: panama-dev <panama-dev-bounces at openjdk.java.net> On Behalf Of John Rose
Sent: Tuesday, April 21, 2020 9:18 AM
To: Sandhya Viswanathan <sandhya.viswanathan at intel.com>
Cc: panama-dev at openjdk.java.net' <panama-dev at openjdk.java.net>
Subject: Re: Bug when using DIV

On Apr 20, 2020, at 12:57 PM, Viswanathan, Sandhya <sandhya.viswanathan at intel.com> wrote:
> 
> Yes, the DIV operator is supported for floating point (float/double) only. 
> That's how we have documented it in the Java doc also.
> http://cr.openjdk.java.net/~psandoz/panama/vector-api-review/docs/api/
> jdk.incubator.vector/jdk/incubator/vector/VectorOperators.html#DIV 
> <http://cr.openjdk.java.net/~psandoz/panama/vector-api-review/docs/api
> /jdk.incubator.vector/jdk/incubator/vector/VectorOperators.html#DIV>
> 
> I think we should verify and update the implementation accordingly, if that is not already so.

At one point I promoted it to “full service” status because I thought there was support available for the integer versions also.
It’s a little surprising to have add, sub, and mul, but not div, but even more surprising if div isn’t implemented.

(BTW, does ARM implement integer divide on vectors?)

I hope we can fill that gap before the API is fully mature, but I agree with taking away div for now.

— John