sibcall.c (optimize_sibling_and_tail_recursive_calls): Call…

sibcall.c (optimize_sibling_and_tail_recursive_calls): Call purge_mem_unchanging_flag on all instructions...

	* sibcall.c (optimize_sibling_and_tail_recursive_calls): Call
	purge_mem_unchanging_flag on all instructions, not just on those
	before NOTE_INSN_FUNCTION_BEG.

From-SVN: r46091

gcc/ChangeLog

+2001-10-08  Jeffrey A Law  <law@cygnus.com>
+
+	* sibcall.c (optimize_sibling_and_tail_recursive_calls): Call
+	purge_mem_unchanging_flag on all instructions, not just on those
+	before NOTE_INSN_FUNCTION_BEG.
+
 2001-10-08  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	* cppmacro.c (_cpp_create_definition): Leave comments off.

gcc/sibcall.c

@@ -746,12 +746,7 @@ optimize_sibling_and_tail_recursive_calls ()
 	 we actually write into.  */
       for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
 	{
-	  if (GET_CODE (insn) == NOTE)
-	    {
-	      if (NOTE_LINE_NUMBER (insn) == NOTE_INSN_FUNCTION_BEG)
-		break;
-	    }
-	  else if (INSN_P (insn))
+	  if (INSN_P (insn))
 	    purge_mem_unchanging_flag (PATTERN (insn));
 	}
     }