condition flags USE in AD instruct

Christian Thalinger Christian.Thalinger at Sun.COM
Tue Apr 14 11:24:57 PDT 2009

On Tue, 2009-04-14 at 11:18 -0700, Tom Rodriguez wrote:
> On Apr 14, 2009, at 11:07 AM, Tom Rodriguez wrote:
> > What's it look like?  You can USE something that isn't mentioned in  
> > the match rule.  A USE has to an
>                             ^can't
> tom
> > input to the underlying MachNode and if it's not mentioned in the  
> > match rule then it's not an input.

That seems to be the problem, it's not in the match rule:

instruct addcI_rReg_imm(rRegI dst, immI src, rFlagsReg cr, cmpOp cop)
  match(Set dst (AddcI cop (Binary dst src)));
  effect(USE_KILL cr);

Can I add a dummy input for cr in the match rule?

-- Christian

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