CVS: gcc/gcc-current/gcc fold-const.c,NONE,1.1

Update of /cvsroot/mspgcc/gcc/gcc-current/gcc
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv20686

Added Files:
	fold-const.c 
Log Message:
this fixs 
1. if(a&0x40)
2. 'and' in DI mode  


--- NEW FILE: fold-const.c ---
/* Fold a constant sub-tree into a single node for C-compiler
   Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
[...8883 lines suppressed...]
	  {
	    elt = CONST_VECTOR_ELT (r, i);
	    if (!rtl_expr_nonnegative_p (elt))
	      return 0;
	  }

	return 1;
      }

    case SYMBOL_REF:
    case LABEL_REF:
      /* These are always nonnegative.  */
      return 1;

    default:
      return 0;
    }
}

#include "gt-fold-const.h"



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