reload1.c (reload_as_needed): Allow a USE in asm reloads.

	* reload1.c (reload_as_needed): Allow a USE in asm reloads.

	* loop.c: (find_mem_in_note_1, find_mem_in_note): Comment.

From-SVN: r64991

gcc/ChangeLog

+2003-03-29  Alan Modra  <amodra@bigpond.net.au>
+
+	* reload1.c (reload_as_needed): Allow a USE in asm reloads.
+
+	* loop.c: (find_mem_in_note_1, find_mem_in_note): Comment.
+
 2003-03-28  Nathanael Nerode  <neroden@gcc.gnu.org>
 
 	* configure.in: Clarify comments.

gcc/loop.c

@@ -10400,6 +10400,8 @@ try_swap_copy_prop (loop, replacement, regno)
     }
 }
 
+/* Worker function for find_mem_in_note, called via for_each_rtx.  */
+
 static int
 find_mem_in_note_1 (x, data)
      rtx *x;
@@ -10414,6 +10416,8 @@ find_mem_in_note_1 (x, data)
   return 0;
 }
 
+/* Returns the first MEM found in NOTE by depth-first search.  */
+
 static rtx
 find_mem_in_note (note)
      rtx note;

gcc/reload1.c

@@ -3940,6 +3940,7 @@ reload_as_needed (live_known)
 	      if (asm_noperands (PATTERN (insn)) >= 0)
 		for (p = NEXT_INSN (prev); p != next; p = NEXT_INSN (p))
 		  if (p != insn && INSN_P (p)
+		      && GET_CODE (PATTERN (p)) != USE
 		      && (recog_memoized (p) < 0
 			  || (extract_insn (p), ! constrain_operands (1))))
 		    {