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Re: reload problem:
- From: Alexandre Oliva <aoliva at redhat dot com>
- To: dimmy <diwil at mail dot ru>
- Cc: gcc at gcc dot gnu dot org
- Date: 22 Jan 2002 12:45:10 -0200
- Subject: Re: reload problem:
- Organization: GCC Team, Red Hat
- References: <3C4C62E5.1060702@mail.ru>
On Jan 21, 2002, dimmy <diwil@mail.ru> wrote:
> So, the question is: Why gcc does not follow '0' constraint and tries
> to combine 3 different operands into one insn?
Because combine does not even look at constraints. That's regalloc's
business. combine uses only predicates and conditions to validate an
instruction.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist *Please* write to mailing lists, not to me