1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/bmi-5.c b/gcc/testsuite/gcc.target/i386/bmi-5.c
new file mode 100644
index 000000000..906bf217c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/bmi-5.c
@@ -0,0 +1,14 @@
+/* { dg-do link } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O2 -mbmi" } */
+
+#include <x86intrin.h>
+
+/* Test that a constant operand 0 to tzcnt gets folded.  */
+extern void link_error(void);
+int main()
+{
+  if (__tzcnt_u64(0) != 64)
+    link_error();
+  return 0;
+}