llvm dev - Apr 2009 - [LLVMdev] ISel Pattern Preferences

David,
Would you mind documenting what you did with AddedComplexity for the 'less
fortunate' on the wiki?

Thanks,
Justin.

On Mon, Apr 6, 2009 at 9:47 PM, David Greene <dag at cray.com> wrote:
> On Monday 06 April 2009 13:31, David Greene wrote:
> > What's a reliable way to prefer one patterns over another?  I have
two
> > patterns with different predicates.  Pattern A has a very general
> predicate
> > to catch a wide variety of store instructions.  Pattern B has a
narrower
> > predicate meant to catch very specific store instructions that would
also
> > satisfy the predicate for Pattern A.
> >
> > We used to match Pattern B just fine but after changing .td files a
bit
> the
> > selector is always picking Pattern A.
> >
> > Setting AddedComplexity doesn't seem to help.
>
> Urk.  I set AddedComplexity on the wrong thing.  Seems to work now.
>
>                                                -Dave
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On Tuesday 07 April 2009 01:20, someguy wrote:
> David,
> Would you mind documenting what you did with AddedComplexity for the
'less
> fortunate' on the wiki?
Yep.  Will do.  Hmm...is there a link to the Wiki on the main page?  I can't
find it.

                                         -Dave

Not yet.
http://wiki.llvm.org

On Tue, Apr 7, 2009 at 6:06 PM, David Greene <dag at cray.com> wrote:
> On Tuesday 07 April 2009 01:20, someguy wrote:
> > David,
> > Would you mind documenting what you did with AddedComplexity for the
> 'less
> > fortunate' on the wiki?
>
> Yep.  Will do.  Hmm...is there a link to the Wiki on the main page?  I
> can't
> find it.
>
>                                         -Dave
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
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