Revert of Reland: Remove register index/code indirection

src/arm64/deoptimizer-arm64.cc

 // Copyright 2013 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/arm64/frames-arm64.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
-#include "src/register-configuration.h"
 #include "src/safepoint-table.h"
 
 
 namespace v8 {
 namespace internal {
 
 
 int Deoptimizer::patch_size() {
   // Size of the code used to patch lazy bailout points.
   // Patching is done by Deoptimizer::DeoptimizeFunction.
@@ skipping 49 matching lines @@
   // callee saved registers in JavaScript frames, so all registers are
   // spilled. Registers fp and sp are set to the correct values though.
   for (int i = 0; i < Register::NumRegisters(); i++) {
     input_->SetRegister(i, 0);
   }
 
   // TODO(all): Do we also need to set a value to csp?
   input_->SetRegister(jssp.code(), reinterpret_cast<intptr_t>(frame->sp()));
   input_->SetRegister(fp.code(), reinterpret_cast<intptr_t>(frame->fp()));
 
-  for (int i = 0; i < DoubleRegister::kMaxNumRegisters; i++) {
+  for (int i = 0; i < DoubleRegister::NumAllocatableRegisters(); i++) {
     input_->SetDoubleRegister(i, 0.0);
   }
 
   // Fill the frame content from the actual data on the frame.
   for (unsigned i = 0; i < input_->GetFrameSize(); i += kPointerSize) {
     input_->SetFrameSlot(i, Memory::uint64_at(tos + i));
   }
 }
 
 
@@ skipping 26 matching lines @@
 #define __ masm()->
 
 void Deoptimizer::TableEntryGenerator::Generate() {
   GeneratePrologue();
 
   // TODO(all): This code needs to be revisited. We probably only need to save
   // caller-saved registers here. Callee-saved registers can be stored directly
   // in the input frame.
 
   // Save all allocatable floating point registers.
-  CPURegList saved_fp_registers(
-      CPURegister::kFPRegister, kDRegSizeInBits,
-      RegisterConfiguration::ArchDefault()->allocatable_double_codes_mask());
+  CPURegList saved_fp_registers(CPURegister::kFPRegister, kDRegSizeInBits,
+                                FPRegister::kAllocatableFPRegisters);
   __ PushCPURegList(saved_fp_registers);
 
   // We save all the registers expcept jssp, sp and lr.
   CPURegList saved_registers(CPURegister::kRegister, kXRegSizeInBits, 0, 27);
   saved_registers.Combine(fp);
   __ PushCPURegList(saved_registers);
 
   __ Mov(x3, Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate())));
   __ Str(fp, MemOperand(x3));
 
@@ skipping 218 matching lines @@
 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) {
   // No embedded constant pool support.
   UNREACHABLE();
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8