[compiler] Sidestep optimizing of generator resumers.

src/compiler/ast-graph-builder.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/ast-graph-builder.h"
 
 #include "src/ast/scopes.h"
 #include "src/compiler.h"
 #include "src/compiler/ast-loop-assignment-analyzer.h"
 #include "src/compiler/control-builders.h"
@@ skipping 2551 matching lines @@
 }
 
 
 void AstGraphBuilder::VisitCallRuntime(CallRuntime* expr) {
   // Handle calls to runtime functions implemented in JavaScript separately as
   // the call follows JavaScript ABI and the callee is statically unknown.
   if (expr->is_jsruntime()) {
     return VisitCallJSRuntime(expr);
   }
 
-  const Runtime::Function* function = expr->function();
-
-  // TODO(mstarzinger): This bailout is a gigantic hack, the owner is ashamed.
-  if (function->function_id == Runtime::kInlineGeneratorNext ||
-      function->function_id == Runtime::kInlineGeneratorReturn ||
-      function->function_id == Runtime::kInlineGeneratorThrow) {
-    ast_context()->ProduceValue(jsgraph()->TheHoleConstant());
-    return SetStackOverflow();
-  }
-
   // Evaluate all arguments to the runtime call.
   ZoneList<Expression*>* args = expr->arguments();
   VisitForValues(args);
 
   // Create node to perform the runtime call.
-  Runtime::FunctionId functionId = function->function_id;
+  Runtime::FunctionId functionId = expr->function()->function_id;
   const Operator* call = javascript()->CallRuntime(functionId, args->length());
   FrameStateBeforeAndAfter states(this, expr->CallId());
   Node* value = ProcessArguments(call, args->length());
   states.AddToNode(value, expr->id(), ast_context()->GetStateCombine());
   ast_context()->ProduceValue(value);
 }
 
 
 void AstGraphBuilder::VisitUnaryOperation(UnaryOperation* expr) {
   switch (expr->op()) {
@@ skipping 1785 matching lines @@
     // Phi does not exist yet, introduce one.
     value = NewPhi(inputs, value, control);
     value->ReplaceInput(inputs - 1, other);
   }
   return value;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8