Revert of Reland: Remove register index/code indirection

src/ia32/lithium-codegen-ia32.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.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 83 matching lines @@
 
 void LCodeGen::SaveCallerDoubles() {
   DCHECK(info()->saves_caller_doubles());
   DCHECK(NeedsEagerFrame());
   Comment(";;; Save clobbered callee double registers");
   int count = 0;
   BitVector* doubles = chunk()->allocated_double_registers();
   BitVector::Iterator save_iterator(doubles);
   while (!save_iterator.Done()) {
     __ movsd(MemOperand(esp, count * kDoubleSize),
-             XMMRegister::from_code(save_iterator.Current()));
+              XMMRegister::FromAllocationIndex(save_iterator.Current()));
     save_iterator.Advance();
     count++;
   }
 }
 
 
 void LCodeGen::RestoreCallerDoubles() {
   DCHECK(info()->saves_caller_doubles());
   DCHECK(NeedsEagerFrame());
   Comment(";;; Restore clobbered callee double registers");
   BitVector* doubles = chunk()->allocated_double_registers();
   BitVector::Iterator save_iterator(doubles);
   int count = 0;
   while (!save_iterator.Done()) {
-    __ movsd(XMMRegister::from_code(save_iterator.Current()),
-             MemOperand(esp, count * kDoubleSize));
+    __ movsd(XMMRegister::FromAllocationIndex(save_iterator.Current()),
+              MemOperand(esp, count * kDoubleSize));
     save_iterator.Advance();
     count++;
   }
 }
 
 
 bool LCodeGen::GeneratePrologue() {
   DCHECK(is_generating());
 
   if (info()->IsOptimizing()) {
@@ skipping 376 matching lines @@
     int target_offset = masm()->pc_offset() + Deoptimizer::patch_size();
     while (masm()->pc_offset() < target_offset) {
       masm()->nop();
     }
   }
   safepoints_.Emit(masm(), GetStackSlotCount());
   return !is_aborted();
 }
 
 
-Register LCodeGen::ToRegister(int code) const {
-  return Register::from_code(code);
+Register LCodeGen::ToRegister(int index) const {
+  return Register::FromAllocationIndex(index);
 }
 
 
-XMMRegister LCodeGen::ToDoubleRegister(int code) const {
-  return XMMRegister::from_code(code);
+XMMRegister LCodeGen::ToDoubleRegister(int index) const {
+  return XMMRegister::FromAllocationIndex(index);
 }
 
 
 Register LCodeGen::ToRegister(LOperand* op) const {
   DCHECK(op->IsRegister());
   return ToRegister(op->index());
 }
 
 
 XMMRegister LCodeGen::ToDoubleRegister(LOperand* op) const {
@@ skipping 5183 matching lines @@
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32