[debug] add exception predictions to builtins where missing.

test/cctest/test-debug.cc

Index: test/cctest/test-debug.cc
diff --git a/test/cctest/test-debug.cc b/test/cctest/test-debug.cc
index 8d06b1b66e3fa4f949ed024a7c52a57a678df4b4..151fe6c01b7a378f900c19dc8853540f8ef7a818 100644
--- a/test/cctest/test-debug.cc
+++ b/test/cctest/test-debug.cc
@@ -6663,3 +6663,17 @@ TEST(DebugCoverage) {
   CHECK_EQ(1, function_data.End().GetColumnNumber());
   CHECK_EQ(2, function_data.Count());
 }
+
+TEST(BuiltinsExceptionPrediction) {
+  i::Builtins* builtins = CcTest::i_isolate()->builtins();
+  bool fail = false;
+  for (int i = 0; i < i::Builtins::builtin_count; i++) {
+    Code* builtin = builtins->builtin(static_cast<i::Builtins::Name>(i));
+    if (i::HandlerTable::cast(builtin->handler_table())->length() > 0 &&
+        !builtin->is_promise_rejection() && !builtin->is_exception_caught()) {
+      fail = true;
+      i::PrintF("%s is missing exception predictions.\n", builtins->name(i));

[Yang, 2017/03/06 11:45:02]

The output of this is currently:

ResolvePromise is missing exception predictions.
PromiseResolve is missing exception predictions.
PromiseThenFinally is missing exception predictions.
PromiseCatchFinally is missing exception predictions.
AsyncFromSyncIteratorPrototypeNext is missing exception predictions.
AsyncFromSyncIteratorPrototypeThrow is missing exception predictions.
AsyncFromSyncIteratorPrototypeReturn is missing exception predictions.

+    }
+  }
+  CHECK(!fail);
+}