rtlanal.c (find_reg_note): Manually unswitch the loop.

2004-04-01  Andrew Pinski  <pinskia@physics.uc.edu>

        * rtlanal.c (find_reg_note): Manually
        unswitch the loop.

From-SVN: r80347

gcc/ChangeLog

+2004-04-01  Andrew Pinski  <pinskia@physics.uc.edu>
+
+	* rtlanal.c (find_reg_note): Manually
+	unswitch the loop.
+
 2004-04-01  Mark Mitchell  <mark@codesourcery.com>
 
 	* genemit.c (gen_split): Change prototype of generated code.

gcc/rtlanal.c

@@ -1911,10 +1911,16 @@ find_reg_note (rtx insn, enum reg_note kind, rtx datum)
   /* Ignore anything that is not an INSN, JUMP_INSN or CALL_INSN.  */
   if (! INSN_P (insn))
     return 0;
+  if (datum == 0)
+    {
+      for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
+	if (REG_NOTE_KIND (link) == kind)
+	  return link;
+      return 0;
+    }
 
   for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
-    if (REG_NOTE_KIND (link) == kind
-	&& (datum == 0 || datum == XEXP (link, 0)))
+    if (REG_NOTE_KIND (link) == kind && datum == XEXP (link, 0))
       return link;
   return 0;
 }