alias.c (find_base_term, [...]): Make same change as for find_base_value.

	* alias.c (find_base_term, case ZERO_EXTEND, case SIGN_EXTEND):
	Make same change as for find_base_value.

From-SVN: r49730

gcc/ChangeLog

+Wed Feb 13 09:45:08 2002  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+	* alias.c (find_base_term, case ZERO_EXTEND, case SIGN_EXTEND):
+	Make same change as for find_base_value.
+
 2002-02-13  Kazu Hirata  <kazu@hxi.com>
 
 	* config/h8300/h8300.h (MODES_TIEABLE_P): Accept a combination

gcc/alias.c

@@ -1242,8 +1242,6 @@ find_base_term (x)
       if (GET_MODE_SIZE (GET_MODE (x)) < GET_MODE_SIZE (Pmode))
         return 0;
       /* Fall through.  */
-    case ZERO_EXTEND:
-    case SIGN_EXTEND:	/* Used for Alpha/NT pointers */
     case HIGH:
     case PRE_INC:
     case PRE_DEC:
@@ -1253,6 +1251,19 @@ find_base_term (x)
     case POST_MODIFY:
       return find_base_term (XEXP (x, 0));
 
+    case ZERO_EXTEND:
+    case SIGN_EXTEND:	/* Used for Alpha/NT pointers */
+      {
+	rtx temp = find_base_term (XEXP (x, 0));
+
+#ifdef POINTERS_EXTEND_UNSIGNED
+	if (temp != 0 && CONSTANT_P (temp) && GET_MODE (temp) != Pmode)
+	  temp = convert_memory_address (Pmode, temp);
+#endif
+
+	return temp;
+      }
+
     case VALUE:
       val = CSELIB_VAL_PTR (x);
       for (l = val->locs; l; l = l->next)