Eagerly disable optimization of %_GeneratorThrow, %_GeneratorNext

src/hydrogen.cc

 // Copyright 2013 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/hydrogen.h"
 
 #include <sstream>
 
 #include "src/v8.h"
 
@@ skipping 12725 matching lines @@
   HGetCachedArrayIndex* result = New<HGetCachedArrayIndex>(value);
   return ast_context()->ReturnInstruction(result, call->id());
 }
 
 
 void HOptimizedGraphBuilder::GenerateFastOneByteArrayJoin(CallRuntime* call) {
   return Bailout(kInlinedRuntimeFunctionFastOneByteArrayJoin);
 }
 
 
-// Support for generators.
+// Functions with these generator primitives will not be optimized; see
+// ast-numbering.cc.
 void HOptimizedGraphBuilder::GenerateGeneratorNext(CallRuntime* call) {
-  return Bailout(kInlinedRuntimeFunctionGeneratorNext);
+  UNREACHABLE();
 }
 
 
 void HOptimizedGraphBuilder::GenerateGeneratorThrow(CallRuntime* call) {
-  return Bailout(kInlinedRuntimeFunctionGeneratorThrow);
+  UNREACHABLE();
 }
 
 
 void HOptimizedGraphBuilder::GenerateDebugBreakInOptimizedCode(
     CallRuntime* call) {
   Add<HDebugBreak>();
   return ast_context()->ReturnValue(graph()->GetConstant0());
 }
 
 
@@ skipping 684 matching lines @@
   if (ShouldProduceTraceOutput()) {
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 } }  // namespace v8::internal