https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123121
--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
diff --git a/gcc/testsuite/gcc.target/i386/pr123121.c
b/gcc/testsuite/gcc.target/i386/pr123121.c
new file mode 100644
index 000000000000..d4c3c0fe3118
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr123121.c
@@ -0,0 +1,57 @@
+/* { dg-do run } */
+/* { dg-require-effective-target lp64 } */
There is no need to limit the testcase to lp64, it also works for x32 and
32-bit i686 targets. I will remove the dg-directive in a follow-up patch.
