Merge ConstantInstr -> UnboxDouble to UnboxedConstant. Reduces register usage and allows for variou…

runtime/vm/assembler_x64.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ASSEMBLER_X64_H_
 #define VM_ASSEMBLER_X64_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_x64.h directly; use assembler.h instead.
 #endif
@@ skipping 673 matching lines @@
   void LoadImmediate(const Address& dst, const Immediate& imm, Register pp);
   void LoadObject(Register dst, const Object& obj, Register pp);
   void JmpPatchable(const ExternalLabel* label, Register pp);
   void Jmp(const ExternalLabel* label, Register pp);
   void J(Condition condition, const ExternalLabel* label, Register pp);
   void CallPatchable(const ExternalLabel* label);
   void Call(const ExternalLabel* label, Register pp);
   void StoreObject(const Address& dst, const Object& obj, Register pp);
   void PushObject(const Object& object, Register pp);
   void CompareObject(Register reg, const Object& object, Register pp);
-  void LoadDoubleConstant(XmmRegister dst, double value);
+  void LoadDoubleConstant(XmmRegister dst, double value, Register pp);
 
   // Destroys value.
   void StoreIntoObject(Register object,  // Object we are storing into.
                        const Address& dest,  // Where we are storing into.
                        Register value,  // Value we are storing.
                        bool can_value_be_smi = true);
 
   void StoreIntoObjectNoBarrier(Register object,
                                 const Address& dest,
                                 Register value);
@@ skipping 360 matching lines @@
 }
 
 
 inline void Assembler::EmitOperandSizeOverride() {
   EmitUint8(0x66);
 }
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_X64_H_