diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 416bf6386b7..3d1233715a1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2019-09-26  Max Filippov  <jcmvbkbc@gmail.com>
+
+	* config/xtensa/xtensa.c (hwloop_optimize): Insert zero overhead
+	loop instruction into new basic block before the loop when basic
+	block that precedes the loop is empty.
+
 2019-09-26  Jakub Jelinek  <jakub@redhat.com>
 
 	* function.c (gimplify_parameters): Use build_clobber function.
diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
index 3c129fdca1d..9453f0c162b 100644
--- a/gcc/config/xtensa/xtensa.c
+++ b/gcc/config/xtensa/xtensa.c
@@ -4230,7 +4230,9 @@ hwloop_optimize (hwloop_info loop)
 
   seq = get_insns ();
 
-  if (!single_succ_p (entry_bb) || vec_safe_length (loop->incoming) > 1)
+  entry_after = BB_END (entry_bb);
+  if (!single_succ_p (entry_bb) || vec_safe_length (loop->incoming) > 1
+      || !entry_after)
     {
       basic_block new_bb;
       edge e;
@@ -4251,7 +4253,6 @@ hwloop_optimize (hwloop_info loop)
     }
   else
     {
-      entry_after = BB_END (entry_bb);
       while (DEBUG_INSN_P (entry_after)
              || (NOTE_P (entry_after)
 		 && NOTE_KIND (entry_after) != NOTE_INSN_BASIC_BLOCK))
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 2d78fdde752..7cdc8f0d107 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-09-26  Max Filippov  <jcmvbkbc@gmail.com>
+
+	* gcc.target/xtensa/pr91880.c: New test case.
+	* gcc.target/xtensa/xtensa.exp: New test suite.
+
 2019-09-26  Will Schmidt <will_schmidt@vnet.ibm.com>
 
 	* gcc.target/powerpc/pure-builtin-redundant-load.c:  New.
diff --git a/gcc/testsuite/gcc.target/xtensa/pr91880.c b/gcc/testsuite/gcc.target/xtensa/pr91880.c
new file mode 100644
index 00000000000..f4895a1bb8e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/xtensa/pr91880.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options "-O3 -fomit-frame-pointer -fno-tree-vectorize" } */
+
+void foo (unsigned int n, char *a, char *b)
+{
+  int i;
+
+  for (i = 0; i <= n - 1; ++i)
+    a[i] = b[i];
+}
diff --git a/gcc/testsuite/gcc.target/xtensa/xtensa.exp b/gcc/testsuite/gcc.target/xtensa/xtensa.exp
new file mode 100644
index 00000000000..8720327f526
--- /dev/null
+++ b/gcc/testsuite/gcc.target/xtensa/xtensa.exp
@@ -0,0 +1,41 @@
+# Copyright (C) 2019 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# GCC testsuite that uses the `dg.exp' driver.
+
+# Exit immediately if this isn't an Xtensa target.
+if ![istarget xtensa*-*-*] then {
+  return
+}
+
+# Load support procs.
+load_lib gcc-dg.exp
+
+# If a testcase doesn't have special options, use these.
+global DEFAULT_CFLAGS
+if ![info exists DEFAULT_CFLAGS] then {
+    set DEFAULT_CFLAGS " -ansi -pedantic-errors"
+}
+
+# Initialize `dg'.
+dg-init
+
+# Main loop.
+dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.\[cS\]]] \
+	"" $DEFAULT_CFLAGS
+
+# All done.
+dg-finish