emit-rtl.c (reorder_insns_nobb): Sanity-check that AFTER is not in the range FROM..TO, inclusive.

	* emit-rtl.c (reorder_insns_nobb) [ENABLE_CHECKING]: Sanity-check
	that AFTER is not in the range FROM..TO, inclusive.

From-SVN: r164664

gcc/ChangeLog

 2010-09-27  Hans-Peter Nilsson  <hp@axis.com>
+
+	* emit-rtl.c (reorder_insns_nobb) [ENABLE_CHECKING]: Sanity-check
+	that AFTER is not in the range FROM..TO, inclusive.
+
+2010-09-27  Hans-Peter Nilsson  <hp@axis.com>
 	    Bernd Schmidt  <bernds@codesourcery.com>
 
 	PR rtl-optimization/45792

gcc/emit-rtl.c

@@ -3977,6 +3977,13 @@ delete_insns_since (rtx from)
 void
 reorder_insns_nobb (rtx from, rtx to, rtx after)
 {
+#ifdef ENABLE_CHECKING
+  rtx x;
+  for (x = from; x != to; x = NEXT_INSN (x))
+    gcc_assert (after != x);
+  gcc_assert (after != to);
+#endif
+
   /* Splice this bunch out of where it is now.  */
   if (PREV_INSN (from))
     NEXT_INSN (PREV_INSN (from)) = NEXT_INSN (to);