[compiler] Sidestep optimizing of generator resumers.

src/compiler.cc

 // Copyright 2012 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.h"
 
 #include <algorithm>
 
 #include "src/ast/ast-numbering.h"
 #include "src/ast/prettyprinter.h"
@@ skipping 365 matching lines @@
 
 
 OptimizedCompileJob::Status OptimizedCompileJob::CreateGraph() {
   DCHECK(info()->IsOptimizing());
 
   // Do not use Crankshaft/TurboFan if we need to be able to set break points.
   if (info()->shared_info()->HasDebugInfo()) {
     return AbortOptimization(kFunctionBeingDebugged);
   }
 
+  // Resuming a suspended frame is not supported by Crankshaft/TurboFan.
+  if (info()->shared_info()->HasBuiltinFunctionId() &&
+      (info()->shared_info()->builtin_function_id() == kGeneratorObjectNext ||
+       info()->shared_info()->builtin_function_id() == kGeneratorObjectReturn ||
+       info()->shared_info()->builtin_function_id() == kGeneratorObjectThrow)) {
+    return AbortOptimization(kGeneratorResumeMethod);
+  }
+
   // Limit the number of times we try to optimize functions.
   const int kMaxOptCount =
       FLAG_deopt_every_n_times == 0 ? FLAG_max_opt_count : 1000;
   if (info()->opt_count() > kMaxOptCount) {
     return AbortOptimization(kOptimizedTooManyTimes);
   }
 
   // Check the whitelist for Crankshaft.
   if (!info()->closure()->PassesFilter(FLAG_hydrogen_filter)) {
     return AbortOptimization(kHydrogenFilter);
@@ skipping 1561 matching lines @@
 
 #if DEBUG
 void CompilationInfo::PrintAstForTesting() {
   PrintF("--- Source from AST ---\n%s\n",
          PrettyPrinter(isolate()).PrintProgram(literal()));
 }
 #endif
 
 }  // namespace internal
 }  // namespace v8