ARM64: Small optimisations

src/arm64/lithium-arm64.h

 // 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.
 
 #ifndef V8_ARM64_LITHIUM_ARM64_H_
 #define V8_ARM64_LITHIUM_ARM64_H_
 
 #include "hydrogen.h"
 #include "lithium-allocator.h"
 #include "lithium.h"
@@ skipping 1023 matching lines @@
     inputs_[0] = value;
   }
 
   LOperand* value() { return inputs_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(DoubleBits, "double-bits")
   DECLARE_HYDROGEN_ACCESSOR(DoubleBits)
 };
 
 
-class LConstructDouble V8_FINAL : public LTemplateInstruction<1, 2, 1> {
+class LConstructDouble V8_FINAL : public LTemplateInstruction<1, 2, 0> {
  public:
-  LConstructDouble(LOperand* hi, LOperand* lo, LOperand* temp) {
+  LConstructDouble(LOperand* hi, LOperand* lo) {
     inputs_[0] = hi;
     inputs_[1] = lo;
-    temps_[0] = temp;
   }
 
   LOperand* hi() { return inputs_[0]; }
   LOperand* lo() { return inputs_[1]; }
-  LOperand* temp() { return temps_[0]; }
 
   DECLARE_CONCRETE_INSTRUCTION(ConstructDouble, "construct-double")
 };
 
 
 class LClassOfTestAndBranch V8_FINAL : public LControlInstruction<1, 2> {
  public:
   LClassOfTestAndBranch(LOperand* value, LOperand* temp1, LOperand* temp2) {
     inputs_[0] = value;
     temps_[0] = temp1;
@@ skipping 2125 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_LITHIUM_ARM64_H_