Re-reland: Remove register index/code indirection

src/frames.cc

Index: src/frames.cc
diff --git a/src/frames.cc b/src/frames.cc
index 2ddb4200bfaedc450fa8db611711f64af717b771..f868ffa4566b4d54c160e551f4188fd94afe0f1c 100644
--- a/src/frames.cc
+++ b/src/frames.cc
@@ -11,6 +11,7 @@
 #include "src/deoptimizer.h"
 #include "src/frames-inl.h"
 #include "src/full-codegen/full-codegen.h"
+#include "src/register-configuration.h"
 #include "src/safepoint-table.h"
 #include "src/scopeinfo.h"
 #include "src/string-stream.h"
@@ -643,8 +644,9 @@ void StandardFrame::IterateCompiledFrame(ObjectVisitor* v) const {
   if (safepoint_entry.has_doubles()) {
     // Number of doubles not known at snapshot time.
     DCHECK(!isolate()->serializer_enabled());
-    parameters_base += DoubleRegister::NumAllocatableRegisters() *
-        kDoubleSize / kPointerSize;
+    parameters_base += RegisterConfiguration::ArchDefault()
+                           ->num_allocatable_double_registers() *
+                       kDoubleSize / kPointerSize;
   }
 
   // Visit the registers that contain pointers if any.