enable test_bigswitch* on larger cases, but disable emterpreter due to compilation slowness

tests/test_core.py

@@ -2217,7 +2217,8 @@ int main() {
     self.do_run_from_file(src, output)
 
   def test_bigswitch(self):
-    if self.run_name != 'default': return self.skip('TODO: issue #781')
+    if self.is_emterpreter(): return self.skip('todo')
+    self.banned_js_engines = [SPIDERMONKEY_ENGINE] # bug 1174230
     src = open(path_from_root('tests', 'bigswitch.cpp')).read()
     self.do_run(src, '''34962: GL_ARRAY_BUFFER (0x8892)
 26214: what?
@@ -2225,7 +2226,9 @@ int main() {
 ''', args=['34962', '26214', '35040'])
 
   def test_biggerswitch(self):
-    num_cases = 2000 # TODO: Increase this to ~20000 range, since seeing autogenerated code that reaches that many cases.
+    if self.is_emterpreter(): return self.skip('todo')
+    self.banned_js_engines = [SPIDERMONKEY_ENGINE] # bug 1174230
+    num_cases = 20000
     switch_case, err = Popen([PYTHON, path_from_root('tests', 'gen_large_switchcase.py'), str(num_cases)], stdout=PIPE, stderr=PIPE).communicate()
     self.do_run(switch_case, 'Success!')