[generators] Decouple generator resume from fullcodegen.

src/deoptimizer.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/deoptimizer.h"
 
 #include "src/accessors.h"
 #include "src/ast/prettyprinter.h"
 #include "src/codegen.h"
 #include "src/disasm.h"
@@ skipping 278 matching lines @@
                " / %" V8PRIxPTR "]\n", reinterpret_cast<intptr_t>(function));
       }
       SafepointEntry safepoint = code->GetSafepointEntry(it.frame()->pc());
       int deopt_index = safepoint.deoptimization_index();
       // Turbofan deopt is checked when we are patching addresses on stack.
       bool turbofanned = code->is_turbofanned() &&
                          function->shared()->asm_function() &&
                          !FLAG_turbo_asm_deoptimization;
       bool safe_to_deopt =
           deopt_index != Safepoint::kNoDeoptimizationIndex || turbofanned;
-      CHECK(topmost_optimized_code == NULL || safe_to_deopt || turbofanned);
+      bool builtin = code->kind() == Code::BUILTIN;

[Michael Starzinger, 2016/04/06 08:29:33]

Not actionable for this CL: As discussed offline, we really need a frame-type
for these JSFunction activations backed by BUILTIN code.

+      CHECK(topmost_optimized_code == NULL || safe_to_deopt || turbofanned ||
+            builtin);
       if (topmost_optimized_code == NULL) {
         topmost_optimized_code = code;
         safe_to_deopt_topmost_optimized_code = safe_to_deopt;
       }
     }
   }
 #endif
 
   // Move marked code from the optimized code list to the deoptimized
   // code list, collecting them into a ZoneList.
@@ skipping 3501 matching lines @@
       CHECK(value_info->IsMaterializedObject());
 
       value_info->value_ =
           Handle<Object>(previously_materialized_objects->get(i), isolate_);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace v8