extern void test_arch_core_avx2 (void) __attribute__((__target__("arch=core-avx2")));
extern void test_arch_silvermont (void) __attribute__((__target__("arch=silvermont")));
extern void test_arch_goldmont (void) __attribute__((__target__("arch=goldmont")));
+extern void test_arch_goldmont_plus (void) __attribute__((__target__("arch=goldmont-plus")));
extern void test_arch_knl (void) __attribute__((__target__("arch=knl")));
extern void test_arch_knm (void) __attribute__((__target__("arch=knm")));
extern void test_arch_skylake (void) __attribute__((__target__("arch=skylake")));