[LLVMdev] Botched Build

David Greene dag at cray.com
Mon Feb 15 13:17:43 PST 2010

On Monday 15 February 2010 15:08:22 Chris Lattner wrote:
> On Feb 15, 2010, at 1:04 PM, David Greene wrote:
> >> FWIW, this is because you broke the encoding of an instruction in your
> >> patch.  This is incorrect:
> >>
> >> +def MOVNTDQ_64mr : PSI<0xE7, MRMDestMem, (outs), (ins f128mem:$dst,
> >> VR128:$src), +                    "movntdq\t{$src, $dst|$dst, $src}",
> >> +                    [(alignednontemporalstore (v2f64 VR128:$src),
> >> addr:$dst)]>;
> >>
> >> Please don't check in patches when you know that they break testcases.
> >
> > I certainly didn't know it broke anything.  I even checked the buildbot
> > and it looked like it failed before I ever applied anything.  Apologies
> > for the mix- up.
> FYI, if you want to check the encoding of an instruction, you can do so
> with a command like this:

Thanks.  It's strange that the buidbot shows this test failing long before I
made the change.  Why would that be?

In any event, I've got the problem fixed.  It was a cut-n-paste oversight on 
my part.

As for documentation, where should that go in LangRef.html?  There's
nothing there yet that really talks about special metadata.  I can make up
a section if that seems appropriate.


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