re PR middle-end/29519 (Bad code on MIPS with -fnon-call-exceptions)

	PR middle-end/29519
	* rtlanal.c (nonzero_address_p):  Remove check for values wrapping.

Co-Authored-By: David Daney <ddaney@avtrex.com>

From-SVN: r118023

gcc/ChangeLog

+2006-10-24  Richard Sandiford  <richard@codesourcery.com>
+	    David Daney  <ddaney@avtrex.com>
+
+	PR middle-end/29519
+	* rtlanal.c (nonzero_address_p):  Remove check for values wrapping.
+
 2006-10-25  Ben Elliston  <bje@au.ibm.com>
 
 	* doc/extend.texi (Variable Attributes): Typo fix.

gcc/rtlanal.c

@@ -368,17 +368,7 @@ nonzero_address_p (rtx x)
 
     case PLUS:
       if (GET_CODE (XEXP (x, 1)) == CONST_INT)
-	{
-	  /* Pointers aren't allowed to wrap.  If we've got a register
-	     that is known to be a pointer, and a positive offset, then
-	     the composite can't be zero.  */
-	  if (INTVAL (XEXP (x, 1)) > 0
-	      && REG_P (XEXP (x, 0))
-	      && REG_POINTER (XEXP (x, 0)))
-	    return true;
-
         return nonzero_address_p (XEXP (x, 0));
-	}
       /* Handle PIC references.  */
       else if (XEXP (x, 0) == pic_offset_table_rtx
 	       && CONSTANT_P (XEXP (x, 1)))