integrate.c (initialize_for_inline): In DECL_RTL of a PARM_DECL, look inside a…

integrate.c (initialize_for_inline): In DECL_RTL of a PARM_DECL, look inside a (mem (addressof (mem ...))).

	* integrate.c (initialize_for_inline): In DECL_RTL of a PARM_DECL,
	look inside a (mem (addressof (mem ...))).

From-SVN: r17075

gcc/ChangeLog.11

-Wed Dec 10 18:38:56 1997  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+Fri Dec 12 08:01:44 1997  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
 
-	* Version 2.8.0 released.
+	* integrate.c (initialize_for_inline): In DECL_RTL of a PARM_DECL,
+	look inside a (mem (addressof (mem ...))).
 
 Wed Dec 10 18:38:28 1997  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
  

gcc/integrate.c

@@ -276,6 +276,13 @@ initialize_for_inline (fndecl, min_labelno, max_labelno, max_reg, copy)
     {
       rtx p = DECL_RTL (parms);
 
+      /* If we have (mem (addressof (mem ...))), use the inner MEM since
+	 otherwise the copy_rtx call below will not unshare the MEM since
+	 it shares ADDRESSOF.  */
+      if (GET_CODE (p) == MEM && GET_CODE (XEXP (p, 0)) == ADDRESSOF
+	  && GET_CODE (XEXP (XEXP (p, 0), 0)) == MEM)
+	p = XEXP (XEXP (p, 0), 0);
+
       if (GET_CODE (p) == MEM && copy)
 	{
 	  /* Copy the rtl so that modifications of the addresses