first try of registry allocation

include/codegen/codegen.hpp

@@ -0,0 +1,17 @@
+
+// TODO: store all of values, allocated registers, stack offsets in single allocator
+// to be able to find out which kind a specific temp register represent
+
+#pragma once
+#include <cstddef>
+#include <cstdarg>
+#include "prelude/string.hpp"
+#include "ir/ir.hpp"
+
+class CodeGenerator
+{
+public:
+    virtual ~CodeGenerator() {};
+
+    virtual void Generate(const char* filename, View<IR::Op*> ops) = 0;
+};