[llvm-commits] [PATCH] Allow reversed operand order in Tablegen tied-operand constraints.

[Lang Hames]

Thanks for the catch. :)

- Lang.

On Fri, Oct 19, 2012 at 5:11 PM, David Blaikie <dblaikie at gmail.com> wrote:

> ENOPATCH
>
> On Fri, Oct 19, 2012 at 4:58 PM, Lang Hames <lhames at gmail.com> wrote:
> > When specifying tied operand constraints ("$src = $dst") in tablegen the
> > order of the operands currently matters. If the operands are specified in
> > reverse order ("$dst = $src") tablegen barfs with an opaque "Illegal
> format
> > for tied-to constraint" error.
> >
> > Does anyone know if there's any reason to prohibit the commuted form? If
> > there's not I'll apply this patch, which will allow the commuted form to
> be
> > parsed.
> >
> > - Lang.
> >
> > _______________________________________________
> > llvm-commits mailing list
> > llvm-commits at cs.uiuc.edu
> > http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
> >
>
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