[gcc r9-9731] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:9d40185cd1231ecb4effc8d9b397cc2cb380afc5

commit r9-9731-g9d40185cd1231ecb4effc8d9b397cc2cb380afc5
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Fri Sep 17 00:18:48 2021 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 4e6a8dcc7b6..62910e59a28 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20210916
+20210917