Fix resuming generator marked for optimization.

src/runtime/runtime-generator.cc

Index: src/runtime/runtime-generator.cc
diff --git a/src/runtime/runtime-generator.cc b/src/runtime/runtime-generator.cc
index f7be0eb60b75ad963ac6d3db3c2622f4f50c1261..1d07b2e261d4835f61bf48d3814d38ac913f2f89 100644
--- a/src/runtime/runtime-generator.cc
+++ b/src/runtime/runtime-generator.cc
@@ -43,6 +43,8 @@ RUNTIME_FUNCTION(Runtime_SuspendJSGeneratorObject) {
   JavaScriptFrame* frame = stack_iterator.frame();
   RUNTIME_ASSERT(frame->function()->shared()->is_generator());
   DCHECK_EQ(frame->function(), generator_object->function());
+  DCHECK(frame->function()->shared()->is_compiled());
+  DCHECK(!frame->function()->IsOptimized());
 
   // The caller should have saved the context and continuation already.
   DCHECK_EQ(generator_object->context(), Context::cast(frame->context()));
@@ -88,18 +90,18 @@ RUNTIME_FUNCTION(Runtime_ResumeJSGeneratorObject) {
   JavaScriptFrame* frame = stack_iterator.frame();
 
   DCHECK_EQ(frame->function(), generator_object->function());
-  DCHECK(frame->function()->is_compiled());
+  DCHECK(frame->function()->shared()->is_compiled());
+  DCHECK(!frame->function()->IsOptimized());
 
   STATIC_ASSERT(JSGeneratorObject::kGeneratorExecuting < 0);
   STATIC_ASSERT(JSGeneratorObject::kGeneratorClosed == 0);
 
-  Address pc = generator_object->function()->code()->instruction_start();
+  Code* code = generator_object->function()->shared()->code();
   int offset = generator_object->continuation();
-  DCHECK(offset > 0);
-  frame->set_pc(pc + offset);
+  DCHECK_GT(offset, 0);
+  frame->set_pc(code->instruction_start() + offset);
   if (FLAG_enable_embedded_constant_pool) {
-    frame->set_constant_pool(
-        generator_object->function()->code()->constant_pool());
+    frame->set_constant_pool(code->constant_pool());
   }
   generator_object->set_continuation(JSGeneratorObject::kGeneratorExecuting);