--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/README	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,23 @@
+Notes for testsuite/gcc.dg.
+
+1) There should be only one driver, dg.exp.
+
+2) Try to organize the tests by topic using file name prefixes.
+
+   Eg: All bitfield tests are named "bf-*.c".
+
+   This lets the person running the tests choose particular sets of tests to
+   run easily (using wildcards).
+
+   Eg: make check RUNTESTFLAGS='dg.exp=bf-*.c'
+
+3) Remember DOS file name restrictions (8.3).  Sigh.
+
+4) Send bugs, comments, etc. to dje@cygnus.com.
+
+
+Copyright (C) 1997-2017 Free Software Foundation, Inc.
+
+Copying and distribution of this file, with or without modification,
+are permitted in any medium without royalty provided the copyright
+notice and this notice are preserved.