Remove register counts from VirtualFrame, use register indices instead.

src/virtual-frame-ia32.cc

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 290 matching lines @@
       FrameElement source = elements_[i];
       FrameElement target = expected->elements_[i];
       if (source.is_register() && target.is_register()) {
         if (target.reg().is(source.reg())) {
           if (target.is_synced() && !source.is_synced()) {
             __ mov(Operand(ebp, fp_relative(i)), source.reg());
           }
           elements_[i] = target;
         } else {
           // We need to move source to target.
-          if (frame_registers_.is_used(target.reg())) {
+          if (is_used(target.reg())) {
             // The move is blocked because the target contains valid data.
             // If we are stuck with only cycles remaining, then we spill source.
             // Otherwise, we just need more iterations.
             if (should_break_cycles) {
               SpillElementAt(i);
               should_break_cycles = false;
             } else {  // Record a blocked move.
               if (!any_moves_blocked) {
                 first_move_blocked = i;
               }
@@ skipping 629 matching lines @@
   ASSERT(stack_pointer_ == elements_.length() - 1);
   elements_.Add(FrameElement::MemoryElement());
   stack_pointer_++;
   __ push(immediate);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal