video: Import new shader recompiler + display a triangle (#142)

src/shader_recompiler/ir/post_order.h

@@ -0,0 +1,13 @@
+// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "shader_recompiler/ir/abstract_syntax_list.h"
+#include "shader_recompiler/ir/basic_block.h"
+
+namespace Shader::IR {
+
+BlockList PostOrder(const AbstractSyntaxNode& root);
+
+} // namespace Shader::IR