[stubs] Convert GrowElementsStub to TurboFan

src/crankshaft/x64/lithium-x64.h

 // 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.
 
 #ifndef V8_CRANKSHAFT_X64_LITHIUM_X64_H_
 #define V8_CRANKSHAFT_X64_LITHIUM_X64_H_
 
 #include "src/crankshaft/hydrogen.h"
 #include "src/crankshaft/lithium.h"
 #include "src/crankshaft/lithium-allocator.h"
@@ skipping 214 matching lines @@
     bit_field_ = IsSyntacticTailCallBits::update(bit_field_, true);
   }
   bool IsSyntacticTailCall() const {
     return IsSyntacticTailCallBits::decode(bit_field_);
   }
 
   // Interface to the register allocator and iterators.
   bool ClobbersTemps() const { return IsCall(); }
   bool ClobbersRegisters() const { return IsCall(); }
   virtual bool ClobbersDoubleRegisters(Isolate* isolate) const {
-    return IsCall();
+    return IsCall() || opcode() == LInstruction::kMaybeGrowElements;

[Benedikt Meurer, 2016/08/05 04:35:21]

I guess since this is virtual, the proper way to do this would be to override
the method in LMaybeGrowElements to return true. But after all it's Crankshaft
and deprecated, so I don't care really...

   }
 
   // Interface to the register allocator and iterators.
   bool IsMarkedAsCall() const { return IsCall(); }
 
   virtual bool HasResult() const = 0;
   virtual LOperand* result() const = 0;
 
   LOperand* FirstInput() { return InputAt(0); }
   LOperand* Output() { return HasResult() ? result() : NULL; }
@@ skipping 2388 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_X64_LITHIUM_X64_H_