flow.c (flow_delete_insn): If we delete a CODE_LABEL...

	* flow.c (flow_delete_insn): If we delete a CODE_LABEL, also remove
	it from the nonlocal_goto_handler_labels list.
	* jump.c (delete_insn): Likewise.
	(jump_optimize_1): Also recompute LABEL_NUSES when we are just
	marking labels.
	* rtl.h (remove_node_from_expr_list): Declare.
	* rtlanal.c (remove_node_from_expr_list): New function.

From-SVN: r26361

1 files changed, 30 insertions, 0 deletions

diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index d39071b..fb4f87c 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -1529,6 +1529,36 @@ remove_note (insn, note)
 
   abort ();
 }
+
+/* Search LISTP (an EXPR_LIST) for NODE and remove NODE from the list
+   if it is found.
+
+   A simple equality test is used to determine if NODE is on the
+   EXPR_LIST.  */
+
+void
+remove_node_from_expr_list (node, listp)
+     rtx node;
+     rtx *listp;
+{
+  rtx temp = *listp;
+  rtx prev = NULL_RTX;
+
+  while (temp)
+    {
+      if (node == XEXP (temp, 0))
+	{
+	  /* Splice the node out of the list.  */
+	  if (prev)
+	    XEXP (prev, 1) = XEXP (temp, 1);
+	  else
+	    *listp = XEXP (temp, 1);
+
+	  return;
+	}
+      temp = XEXP (temp, 1);
+    }
+}
 
 /* Nonzero if X contains any volatile instructions.  These are instructions
    which may cause unpredictable machine state instructions, and thus no