Fwd: Re: RFR: 8240615: is_power_of_2() has Undefined Behaviour and is inconsistent

[Andrew Haley]

Can I have an ACK from a compiler dev, please? I know we'll need
to fix up some more stuff, but as John Rose put it,

> To me this is an easy “yes”.  The hardware instruction in question
> uses the unsigned convention.
>
> The harder part is (as you say) figuring out where we were implicitly
> relying on unsigned conventions and behavior will change.  But I
> think we’ve had plenty of eyeballs on this, and it’s easy to fix more
> stuff like this if we find it later, right?

Review thread is at
https://mail.openjdk.java.net/pipermail/hotspot-dev/2020-March/041022.html

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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