1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/builtin-bswap-5.c b/gcc/testsuite/gcc.dg/builtin-bswap-5.c
new file mode 100644
index 000000000..ccac96633
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-bswap-5.c
@@ -0,0 +1,16 @@
+/* { dg-do run } */
+/* { dg-options "-O" } */
+int
+main (void)
+{
+  /* Test constant folding.  */
+  extern void link_error (void);
+
+  if (__builtin_bswap32(0xaabbccdd) != 0xddccbbaa)
+    link_error ();
+
+  if (__builtin_bswap64(0x1122334455667788ULL) != 0x8877665544332211ULL)
+    link_error ();
+
+  return 0;
+}