[RegisterConfiguration] Streamline access to arch defaults, simplify Registers.

src/compiler/graph-visualizer.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/compiler/graph-visualizer.h"
 
 #include <sstream>
 #include <string>
 
 #include "src/code-stubs.h"
@@ skipping 476 matching lines @@
         }
         os_ << " <|@\n";
       }
     }
 
     if (instructions != nullptr) {
       Tag LIR_tag(this, "LIR");
       for (int j = instruction_block->first_instruction_index();
            j <= instruction_block->last_instruction_index(); j++) {
         PrintIndent();
-        PrintableInstruction printable = {
-            RegisterConfiguration::ArchDefault(RegisterConfiguration::TURBOFAN),
-            instructions->InstructionAt(j)};
+        PrintableInstruction printable = {RegisterConfiguration::Turbofan(),
+                                          instructions->InstructionAt(j)};
         os_ << j << " " << printable << " <|@\n";
       }
     }
   }
 }
 
 
 void GraphC1Visualizer::PrintLiveRanges(const char* phase,
                                         const RegisterAllocationData* data) {
   Tag tag(this, "intervals");
@@ skipping 22 matching lines @@
   }
 }
 
 void GraphC1Visualizer::PrintLiveRange(const LiveRange* range, const char* type,
                                        int vreg) {
   if (range != nullptr && !range->IsEmpty()) {
     PrintIndent();
     os_ << vreg << ":" << range->relative_id() << " " << type;
     if (range->HasRegisterAssigned()) {
       AllocatedOperand op = AllocatedOperand::cast(range->GetAssignedOperand());
+      const auto config = RegisterConfiguration::Turbofan();
       if (op.IsRegister()) {
-        os_ << " \"" << op.GetRegister().ToString() << "\"";
+        os_ << " \"" << config->GetGeneralRegisterName(op.register_code())
+            << "\"";
       } else if (op.IsDoubleRegister()) {
-        os_ << " \"" << op.GetDoubleRegister().ToString() << "\"";
+        os_ << " \"" << config->GetDoubleRegisterName(op.register_code())
+            << "\"";
       } else {
         DCHECK(op.IsFloatRegister());
-        os_ << " \"" << op.GetFloatRegister().ToString() << "\"";
+        os_ << " \"" << config->GetFloatRegisterName(op.register_code())
+            << "\"";
       }
     } else if (range->spilled()) {
       const TopLevelLiveRange* top = range->TopLevel();
       int index = -1;
       if (top->HasSpillRange()) {
         index = kMaxInt;  // This hasn't been set yet.
       } else if (top->GetSpillOperand()->IsConstant()) {
         os_ << " \"const(nostack):"
             << ConstantOperand::cast(top->GetSpillOperand())->virtual_register()
             << "\"";
@@ skipping 107 matching lines @@
         os << "]";
       }
       os << std::endl;
     }
   }
   return os;
 }
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8