PPC: Remove register index/code indirection

src/ppc/lithium-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/ppc/lithium-ppc.h"
 
 #include <sstream>
 
 #include "src/hydrogen-osr.h"
 #include "src/lithium-inl.h"
@@ skipping 439 matching lines @@
     if (i < blocks->length() - 1) next = blocks->at(i + 1);
     DoBasicBlock(blocks->at(i), next);
     if (is_aborted()) return NULL;
   }
   status_ = DONE;
   return chunk_;
 }
 
 
 LUnallocated* LChunkBuilder::ToUnallocated(Register reg) {
-  return new (zone()) LUnallocated(LUnallocated::FIXED_REGISTER,
-                                   Register::ToAllocationIndex(reg));
+  return new (zone()) LUnallocated(LUnallocated::FIXED_REGISTER, reg.code());
 }
 
 
 LUnallocated* LChunkBuilder::ToUnallocated(DoubleRegister reg) {
-  return new (zone()) LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER,
-                                   DoubleRegister::ToAllocationIndex(reg));
+  return new (zone())
+      LUnallocated(LUnallocated::FIXED_DOUBLE_REGISTER, reg.code());
 }
 
 
 LOperand* LChunkBuilder::UseFixed(HValue* value, Register fixed_register) {
   return Use(value, ToUnallocated(fixed_register));
 }
 
 
 LOperand* LChunkBuilder::UseFixedDouble(HValue* value, DoubleRegister reg) {
   return Use(value, ToUnallocated(reg));
@@ skipping 2165 matching lines @@
 LInstruction* LChunkBuilder::DoAllocateBlockContext(
     HAllocateBlockContext* instr) {
   LOperand* context = UseFixed(instr->context(), cp);
   LOperand* function = UseRegisterAtStart(instr->function());
   LAllocateBlockContext* result =
       new (zone()) LAllocateBlockContext(context, function);
   return MarkAsCall(DefineFixed(result, cp), instr);
 }
 }  // namespace internal
 }  // namespace v8