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predicate forward references (Was: Re: RFA: Add Epiphany port)

From: Joern Rennecke <amylaar at spamcop dot net>
To: Richard Henderson <rth at redhat dot com>
Cc: gcc at gcc dot gnu dot org
Date: Sat, 05 Nov 2011 00:01:43 -0400
Subject: predicate forward references (Was: Re: RFA: Add Epiphany port)
References: <20111103140816.trwz063nj4ks4gos-nzlynne@webmail.spamcop.net> <CA+=Sn1m0wx7RfS=JaW9=J010SZnf4Ax4mqM--ON3YzUcOfwvTQ@mail.gmail.com> <20111103150455.6mrpu054z8csc00c-nzlynne@webmail.spamcop.net> <4EB2F254.6080802@redhat.com> <20111103182234.22r0qdtuluog4wkc-nzlynne@webmail.spamcop.net> <Pine.LNX.4.64.1111032328590.31547@digraph.polyomino.org.uk> <20111104015458.f7hzapyfqck4gw84-nzlynne@webmail.spamcop.net> <Pine.LNX.4.64.1111041223430.19818@digraph.polyomino.org.uk> <20111104094354.cl551itv9c8c4g0o-nzlynne@webmail.spamcop.net> <4EB42BDB.3060703@redhat.com>

Quoting Richard Henderson <rth@redhat.com>:

(define_predicate "call_address_operand"
  (match_code "symbol_ref,const,reg")
{
  return (symbolic_operand (op, mode) || (GET_CODE (op) == REG));
})

Nit.

(define_predicate "call_address_operand"
  (ior (match_code "reg")
       (match_operand 0 "symbolic_operand")))

It doesn't like the predicates in their original order this way - it complains: ../../srcw/gcc/config/epiphany/predicates.md:25: reference to unknown predicate 'symbolic_operand'

Is there a way to have a predicate forward declaration?

Follow-Ups:
- Re: predicate forward references (Was: Re: RFA: Add Epiphany port)
  - From: Richard Henderson

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