re PR c/7872 ([m68k]ICE on legal code, regression from 3.0 and 2.9*)

	* optabs.c (add_equal_note): Delete SUBREG_REG use.
	Fixes PR c/7872.

From-SVN: r63762

gcc/ChangeLog

+2003-03-03  James E Wilson  <wilson@tuliptree.org>
+
+	* optabs.c (add_equal_note): Delete SUBREG_REG use.
+	Fixes PR c/7872.
+
 2003-03-03  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* config/h8300/h8300.md (*ixorsi3_ashift_16): New.

gcc/optabs.c

@@ -171,11 +171,9 @@ add_equal_note (insns, target, code, op0, op1)
     return 1;
 
   if (! rtx_equal_p (SET_DEST (set), target)
-      /* For a STRICT_LOW_PART, the REG_NOTE applies to what is inside the
-	 SUBREG.  */
+      /* For a STRICT_LOW_PART, the REG_NOTE applies to what is inside it.  */
       && (GET_CODE (SET_DEST (set)) != STRICT_LOW_PART
-	  || ! rtx_equal_p (SUBREG_REG (XEXP (SET_DEST (set), 0)),
-			    target)))
+	  || ! rtx_equal_p (XEXP (SET_DEST (set), 0), target)))
     return 1;
 
   /* If TARGET is in OP0 or OP1, check if anything in SEQ sets TARGET