#define KMP_CACHE_PREFETCH(ADDR) /* nothing */
+// Define attribute that indicates that the fall through from the previous
+// case label is intentional and should not be diagnosed by a compiler
+// Code from libcxx/include/__config
+// Use a function like macro to imply that it must be followed by a semicolon
+#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough)
+# define KMP_FALLTHROUGH() [[fallthrough]]
+#elif __has_cpp_attribute(clang::fallthrough)
+# define KMP_FALLTHROUGH() [[clang::fallthrough]]
+#elif __has_attribute(fallthough) || _GNUC_VER >= 700
+# define KMP_FALLTHROUGH() __attribute__((__fallthrough__))
+#else
+# define KMP_FALLTHROUGH() ((void)0)
+#endif
+
// Define attribute that indicates a function does not return
#if __cplusplus >= 201103L
#define KMP_NORETURN [[noreturn]]
// library. Assume the other library is alive.
// WARN( ... ); // TODO: Issue a warning.
file_name = "unknown library";
+ KMP_FALLTHROUGH();
// Attention! Falling to the next case. That's intentional.
case 1: { // Neighbor is alive.
// Check it is allowed.
case 0: // no schedule clause specified, we can choose the default
// let's try to schedule (team_size*10) tasks
grainsize = thread->th.th_team_nproc * 10;
+ KMP_FALLTHROUGH();
case 2: // num_tasks provided
if (grainsize > tc) {
num_tasks = tc; // too big num_tasks requested, adjust values