emit-rtl.c (try_split): Do not try to split a BARRIER.

        * emit-rtl.c (try_split): Do not try to split a BARRIER.
Fixes core dump for c4x c-torture test.

From-SVN: r23420

gcc/ChangeLog

+1998-10-29 Herman A.J. ten Brugge <Haj.Ten.Brugge@net.HCC.nl>
+
+	* emit-rtl.c (try_split): Do not try to split a BARRIER.
+
 Thu Oct 29 01:33:54 1998  Jan Hubicka <hubicka@freesoft.cz>
 			  Jeffrey A Law  (law@cygnus.com)
 

gcc/emit-rtl.c

@@ -2270,10 +2270,12 @@ try_split (pat, trial, last)
 	     time control returns here that insn will be fully split, so
 	     set LAST and continue from the insn after the one returned.
 	     We can't use next_active_insn here since AFTER may be a note.
-	     Ignore deleted insns, which can be occur if not optimizing.  */
+	     Ignore deleted insns, which can be occur if not optimizing,
+	     and ignore BARRIERs which can occur if we split the insn
+	     immediately before a BARRIER.  */
 	  for (tem = NEXT_INSN (before); tem != after;
 	       tem = NEXT_INSN (tem))
-	    if (! INSN_DELETED_P (tem))
+	    if (! INSN_DELETED_P (tem) && ! GET_CODE (tem) == BARRIER)
 	      tem = try_split (PATTERN (tem), tem, 1);
 	}
       /* Avoid infinite loop if the result matches the original pattern.  */