Improve i386 add

[Andreas Jaeger]

Jan Hubicka <jh@suse.cz> writes:

>> > On Tue, Mar 25, 2003 at 11:37:17PM +0100, Jan Hubicka wrote:
>> > > 	* i386.md: New splitters to canonicalize order of arguments for AND.

AND or ADD?

>> > 
>> > I think this is a mistake.  The bug is elsewhere.
>> 
>> Who should do that?
>> What happens in my testcase is that originally the add has 3 different
>> pseudos as arguments.  regmove fails to convert it into 2 address
>> because it thinks it is not possible in it's simplistics analysis.
>> Register allocator allocates 2 operands to same register by a luck
>> and reload sees he has nothing to do because instruction already match.
>
> Note that ADD is special by having the lea alternative so it is not
> clean 2 address.

Andreas
-- 
 Andreas Jaeger
  SuSE Labs aj@suse.de
   private aj@arthur.inka.de
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