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

src/compiler/ppc/instruction-selector-ppc.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 "src/base/adapters.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 #include "src/ppc/frames-ppc.h"
 
@@ skipping 1757 matching lines @@
         }
       }
       ++slot;
     }
   }
 }
 
 
 bool InstructionSelector::IsTailCallAddressImmediate() { return false; }
 
+int InstructionSelector::GetTempsCountForTailCallFromJSFunction() { return 3; }
 
 void InstructionSelector::VisitFloat64ExtractLowWord32(Node* node) {
   PPCOperandGenerator g(this);
   Emit(kPPC_DoubleExtractLowWord32, g.DefineAsRegister(node),
        g.UseRegister(node->InputAt(0)));
 }
 
 
 void InstructionSelector::VisitFloat64ExtractHighWord32(Node* node) {
   PPCOperandGenerator g(this);
@@ skipping 45 matching lines @@
          MachineOperatorBuilder::kFloat64RoundTruncate |
          MachineOperatorBuilder::kFloat64RoundTiesAway |
          MachineOperatorBuilder::kWord32Popcnt |
          MachineOperatorBuilder::kWord64Popcnt;
   // We omit kWord32ShiftIsSafe as s[rl]w use 0x3f as a mask rather than 0x1f.
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8