Basic DCE pass.

src/alloy/compiler/passes/dead_code_elimination_pass.h

@@ -0,0 +1,38 @@
+/**
+ ******************************************************************************
+ * 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_COMPILER_PASSES_DEAD_CODE_ELIMINATION_PASS_H_
+#define ALLOY_COMPILER_PASSES_DEAD_CODE_ELIMINATION_PASS_H_
+
+#include <alloy/compiler/pass.h>
+
+
+namespace alloy {
+namespace compiler {
+namespace passes {
+
+
+class DeadCodeEliminationPass : public Pass {
+public:
+  DeadCodeEliminationPass();
+  virtual ~DeadCodeEliminationPass();
+
+  virtual int Run(hir::FunctionBuilder* builder);
+
+private:
+  void MakeNopRecursive(const hir::OpcodeInfo* nop, hir::Instr* i);
+};
+
+
+}  // namespace passes
+}  // namespace compiler
+}  // namespace alloy
+
+
+#endif  // ALLOY_COMPILER_PASSES_DEAD_CODE_ELIMINATION_PASS_H_