Is i686 the minimum required for HotSpot on x86?
Dr Andrew John Hughes
ahughes at redhat.com
Tue Mar 29 15:44:52 PDT 2011
On 17:31 Tue 29 Mar , Christian Thalinger wrote:
> On Mar 29, 2011, at 4:35 PM, Christian Thalinger wrote:
> > On Mar 29, 2011, at 4:26 PM, Dr Andrew John Hughes wrote:
> >> We've just had a bug report for IcedTea which suggests that
> >> HotSpot fails on any x86 platform below i686.
> >> The report is:
> >> http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=682
> >> and shows a failure caused by an attempt by the JIT to emit
> >> an instruction which isn't present on i586.
> >> Does HotSpot require i686 as a minimum? Or is there something
> >> else at fault here?
> > There is a switch -XX:+Use486InstrsOnly but I have an open bug for that one:
> > 6808665: Use486InstrsOnly aborts 32-bit VM
> Looking a little closer this could actually be my fault. I added unguarded cmov instructions to C1 with:
> 6919934: JSR 292 needs to support x86 C1
> And that was delivered in HS18b01. I will fix that.
> -- Christian
Ah thanks for finding the issue! I await the fix.
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