Re-reland: Remove register index/code indirection

src/compiler/register-configuration.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/compiler/register-configuration.h"
-#include "src/globals.h"
-#include "src/macro-assembler.h"
-
-namespace v8 {
-namespace internal {
-namespace compiler {
-
-namespace {
-
-STATIC_ASSERT(RegisterConfiguration::kMaxGeneralRegisters >=
-              Register::kNumRegisters);
-STATIC_ASSERT(RegisterConfiguration::kMaxDoubleRegisters >=
-              DoubleRegister::kMaxNumRegisters);
-
-class ArchDefaultRegisterConfiguration : public RegisterConfiguration {
- public:
-  ArchDefaultRegisterConfiguration()
-      : RegisterConfiguration(Register::kMaxNumAllocatableRegisters,
-#if V8_TARGET_ARCH_X87
-                              1,
-                              1,
-#else
-                              DoubleRegister::NumAllocatableRegisters(),
-                              DoubleRegister::NumAllocatableAliasedRegisters(),
-#endif
-                              general_register_name_table_,
-                              double_register_name_table_) {
-    DCHECK_EQ(Register::kMaxNumAllocatableRegisters,
-              Register::NumAllocatableRegisters());
-    for (int i = 0; i < Register::kMaxNumAllocatableRegisters; ++i) {
-      general_register_name_table_[i] = Register::AllocationIndexToString(i);
-    }
-    DCHECK_GE(DoubleRegister::kMaxNumAllocatableRegisters,
-              DoubleRegister::NumAllocatableRegisters());
-    for (int i = 0; i < DoubleRegister::NumAllocatableRegisters(); ++i) {
-      double_register_name_table_[i] =
-          DoubleRegister::AllocationIndexToString(i);
-    }
-  }
-
-  const char*
-      general_register_name_table_[Register::kMaxNumAllocatableRegisters];
-  const char*
-      double_register_name_table_[DoubleRegister::kMaxNumAllocatableRegisters];
-};
-
-
-static base::LazyInstance<ArchDefaultRegisterConfiguration>::type
-    kDefaultRegisterConfiguration = LAZY_INSTANCE_INITIALIZER;
-
-}  // namespace
-
-
-const RegisterConfiguration* RegisterConfiguration::ArchDefault() {
-  return &kDefaultRegisterConfiguration.Get();
-}
-
-RegisterConfiguration::RegisterConfiguration(
-    int num_general_registers, int num_double_registers,
-    int num_aliased_double_registers, const char* const* general_register_names,
-    const char* const* double_register_names)
-    : num_general_registers_(num_general_registers),
-      num_double_registers_(num_double_registers),
-      num_aliased_double_registers_(num_aliased_double_registers),
-      general_register_names_(general_register_names),
-      double_register_names_(double_register_names) {}
-
-
-}  // namespace compiler
-}  // namespace internal
-}  // namespace v8