--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/c-c++-common/unroll-3.c	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,41 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fdisable-tree-cunroll -fdump-rtl-loop2_unroll-details" } */
+
+extern void bar (int);
+
+int j;
+
+void test (void)
+{
+  #pragma GCC unroll 8
+  for (unsigned long i = 1; i <= 8; ++i)
+    bar(i);
+  /* { dg-final { scan-rtl-dump-not "11:.*: optimized: loop unrolled" "loop2_unroll" } } */
+
+  #pragma GCC unroll 8
+  for (unsigned long i = 1; i <= 7; ++i)
+    bar(i);
+  /* { dg-final { scan-rtl-dump-not "16:.*: optimized: loop unrolled" "loop2_unroll" } } */
+
+  #pragma GCC unroll 8
+  for (unsigned long i = 1; i <= 15; ++i)
+    bar(i);
+  /* { dg-final { scan-rtl-dump "21:.*: optimized: loop unrolled 7 times" "loop2_unroll" } } */
+
+  #pragma GCC unroll 8
+  for (unsigned long i = 1; i <= j; ++i)
+    bar(i);
+  /* { dg-final { scan-rtl-dump "26:.*: optimized: loop unrolled 7 times" "loop2_unroll" } } */
+
+  #pragma GCC unroll 7
+  for (unsigned long i = 1; i <= j; ++i)
+    bar(i);
+  /* { dg-final { scan-rtl-dump "31:.*: optimized: loop unrolled 3 times" "loop2_unroll" } } */
+
+  unsigned long i = 0;
+  #pragma GCC unroll 3
+  do {
+    bar(i);
+  } while (++i < 9);
+  /* { dg-final { scan-rtl-dump "3\[79\]:.*: optimized: loop unrolled 2 times" "loop2_unroll" } } */
+}