[PATCH] Fix m32c

[Richard Guenther]

This fixes m32c by allowing conversions from pointers to sizetype
and vice versa.

Bootstrapped and tested on x86_64-unknown-linux-gnu.  DJ tested this
on m32c.

Applied to trunk.

Richard.

2008-05-18  Richard Guenther  <rguenther@suse.de>

	* tree-cfg.c (verify_gimple_expr): Allow conversions from
	pointers to sizetype and vice versa.

Index: gcc/tree-cfg.c
===================================================================
*** gcc/tree-cfg.c	(revision 135494)
--- gcc/tree-cfg.c	(working copy)
*************** verify_gimple_expr (tree expr)
*** 3658,3664 ****
  	   there is no sign or zero extension involved.  */
  	if (((POINTER_TYPE_P (type) && INTEGRAL_TYPE_P (TREE_TYPE (op)))
  	     || (POINTER_TYPE_P (TREE_TYPE (op)) && INTEGRAL_TYPE_P (type)))
! 	    && TYPE_PRECISION (type) == TYPE_PRECISION (TREE_TYPE (op)))
  	  return false;
  
  	/* Allow conversion from integer to offset type and vice versa.  */
--- 3658,3667 ----
  	   there is no sign or zero extension involved.  */
  	if (((POINTER_TYPE_P (type) && INTEGRAL_TYPE_P (TREE_TYPE (op)))
  	     || (POINTER_TYPE_P (TREE_TYPE (op)) && INTEGRAL_TYPE_P (type)))
! 	    && (TYPE_PRECISION (type) == TYPE_PRECISION (TREE_TYPE (op))
! 		/* For targets were the precision of sizetype doesn't
! 		   match that of pointers we need the following.  */
! 		|| type == sizetype || TREE_TYPE (op) == sizetype))
  	  return false;
  
  	/* Allow conversion from integer to offset type and vice versa.  */