flow.c (flow_loop_dump): Do not display insn UIDs if this is not an RTL basic block.

	* flow.c (flow_loop_dump): Do not display insn UIDs if this is not
	an RTL basic block.

From-SVN: r45201

1 files changed, 11 insertions, 5 deletions

diff --git a/gcc/flow.c b/gcc/flow.c
index 1360c7e..1da1ef0 100644
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -9176,11 +9176,17 @@ flow_loop_dump (loop, file, loop_dump_aux, verbose)
   if (! loop || ! loop->header)
     return;
 
-  fprintf (file, ";;\n;; Loop %d (%d to %d):%s%s\n",
-	   loop->num, INSN_UID (loop->first->head),
-	   INSN_UID (loop->last->end),
-	   loop->shared ? " shared" : "",
-	   loop->invalid ? " invalid" : "");
+  if (loop->first->head && loop->last->end)
+    fprintf (file, ";;\n;; Loop %d (%d to %d):%s%s\n",
+	    loop->num, INSN_UID (loop->first->head),
+	    INSN_UID (loop->last->end),
+	    loop->shared ? " shared" : "",
+	    loop->invalid ? " invalid" : "");
+  else
+    fprintf (file, ";;\n;; Loop %d:%s%s\n", loop->num,
+	     loop->shared ? " shared" : "",
+	     loop->invalid ? " invalid" : "");
+
   fprintf (file, ";;  header %d, latch %d, pre-header %d, first %d, last %d\n",
 	   loop->header->index, loop->latch->index,
 	   loop->pre_header ? loop->pre_header->index : -1,