Initial Alloy implementation.

This is a regression in functionality and performance, but a much better
foundation for the future of the project (I think). It can run basic
apps under an SSA interpreter but doesn't support some of the features
required to do real 360 apps yet.

src/alloy/hir/block.h

@@ -0,0 +1,40 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef ALLOY_HIR_BLOCK_H_
+#define ALLOY_HIR_BLOCK_H_
+
+#include <alloy/core.h>
+
+
+namespace alloy {
+namespace hir {
+
+class Instr;
+class Label;
+
+
+class Block {
+public:
+  Block* next;
+  Block* prev;
+
+  Label* label_head;
+  Label* label_tail;
+
+  Instr* instr_head;
+  Instr* instr_tail;
+};
+
+
+}  // namespace hir
+}  // namespace alloy
+
+
+#endif  // ALLOY_HIR_BLOCK_H_