[turbofan] Further fixing ES6 tail call elimination in Turbofan.

src/compiler/x64/instruction-selector-x64.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 <algorithm>
 
 #include "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
@@ skipping 1338 matching lines @@
                     ? g.UseRegister(input.node())
                     : g.Use(input.node());
       Emit(kX64Push, g.NoOutput(), value);
     }
   }
 }
 
 
 bool InstructionSelector::IsTailCallAddressImmediate() { return true; }
 
+int InstructionSelector::GetTempsCountForTailCallFromJSFunction() { return 3; }
 
 namespace {
 
 void VisitCompareWithMemoryOperand(InstructionSelector* selector,
                                    InstructionCode opcode, Node* left,
                                    InstructionOperand right,
                                    FlagsContinuation* cont) {
   DCHECK(left->opcode() == IrOpcode::kLoad);
   X64OperandGenerator g(selector);
   size_t input_count = 0;
@@ skipping 559 matching lines @@
              MachineOperatorBuilder::kFloat64RoundTruncate |
              MachineOperatorBuilder::kFloat32RoundTiesEven |
              MachineOperatorBuilder::kFloat64RoundTiesEven;
   }
   return flags;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8