Factor out some platform-independent code into the shared cfg.cc.

src/cfg.cc

 // Copyright 2009 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 212 matching lines @@
 void ReturnInstr::FastAllocate(TempLocation* temp) {
   ASSERT(temp->where() == TempLocation::NOT_ALLOCATED);
   if (temp == value_) {
     temp->set_where(TempLocation::ACCUMULATOR);
   } else {
     temp->set_where(TempLocation::STACK);
   }
 }
 
 
+void PositionInstr::Compile(MacroAssembler* masm) {
+  if (FLAG_debug_info && pos_ != RelocInfo::kNoPosition) {
+    masm->RecordStatementPosition(pos_);
+    masm->RecordPosition(pos_);
+  }
+}
+
+
+void MoveInstr::Compile(MacroAssembler* masm) {
+  location()->Move(masm, value());
+}
+
+
 // The expression builder should not be used for declarations or statements.
 void ExpressionBuilder::VisitDeclaration(Declaration* decl) { UNREACHABLE(); }
 
 #define DEFINE_VISIT(type)                                              \
   void ExpressionBuilder::Visit##type(type* stmt) { UNREACHABLE(); }
 STATEMENT_NODE_LIST(DEFINE_VISIT)
 #undef DEFINE_VISIT
 
 
 // Macros (temporarily) handling unsupported expression types.
@@ skipping 423 matching lines @@
 void ExitNode::Print() {
   if (!is_marked_) {
     is_marked_ = true;
     PrintF("L%d:\nExit\n\n", number());
   }
 }
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal