Revert "Create a RegisterSpec class inside of the IC that provides:"

src/mips/ic-mips.cc

 // 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.
 
 
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
@@ skipping 542 matching lines @@
   __ Push(a1, a0);
 
   // Perform tail call to the entry.
   ExternalReference ref =
       ExternalReference(IC_Utility(kKeyedLoadIC_Miss), isolate);
 
   __ TailCallExternalReference(ref, 2, 1);
 }
 
 
-// IC register specifications
-Register LoadIC::kReceiverRegister = a0;
-Register LoadIC::kNameRegister = a2;
-const Register LoadIC::registers[] = { kReceiverRegister, kNameRegister };
-
-
-Register KeyedLoadIC::kReceiverRegister = a1;
-Register KeyedLoadIC::kNameRegister = a0;
-const Register KeyedLoadIC::registers[] = { kReceiverRegister, kNameRegister };
-
-
 void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) {
   // ---------- S t a t e --------------
   //  -- ra     : return address
   //  -- a0     : key
   //  -- a1     : receiver
   // -----------------------------------
 
   __ Push(a1, a0);
 
   __ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1);
@@ skipping 758 matching lines @@
   } else {
     ASSERT(Assembler::IsBne(branch_instr));
     patcher.ChangeBranchCondition(eq);
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS