1 files changed, 134 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/ir/basic_block.h b/src/shader_recompiler/frontend/ir/basic_block.h
new file mode 100644
index 000000000..3ed2eb957
--- /dev/null
+++ b/src/shader_recompiler/frontend/ir/basic_block.h
@@ -0,0 +1,134 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <initializer_list>
+#include <map>
+
+#include <boost/intrusive/list.hpp>
+#include <boost/pool/pool_alloc.hpp>
+
+#include "shader_recompiler/frontend/ir/microinstruction.h"
+
+namespace Shader::IR {
+
+class Block {
+public:
+    using InstructionList = boost::intrusive::list<Inst>;
+    using size_type = InstructionList::size_type;
+    using iterator = InstructionList::iterator;
+    using const_iterator = InstructionList::const_iterator;
+    using reverse_iterator = InstructionList::reverse_iterator;
+    using const_reverse_iterator = InstructionList::const_reverse_iterator;
+
+    explicit Block(u32 begin, u32 end);
+    ~Block();
+
+    Block(const Block&) = delete;
+    Block& operator=(const Block&) = delete;
+
+    Block(Block&&) = default;
+    Block& operator=(Block&&) = default;
+
+    /// Appends a new instruction to the end of this basic block.
+    void AppendNewInst(Opcode op, std::initializer_list<Value> args);
+
+    /// Prepends a new instruction to this basic block before the insertion point.
+    iterator PrependNewInst(iterator insertion_point, Opcode op, std::initializer_list<Value> args);
+
+    /// Gets the starting location of this basic block.
+    [[nodiscard]] u32 LocationBegin() const noexcept;
+    /// Gets the end location for this basic block.
+    [[nodiscard]] u32 LocationEnd() const noexcept;
+
+    /// Gets a mutable reference to the instruction list for this basic block.
+    InstructionList& Instructions() noexcept;
+    /// Gets an immutable reference to the instruction list for this basic block.
+    const InstructionList& Instructions() const noexcept;
+
+    [[nodiscard]] bool empty() const {
+        return instructions.empty();
+    }
+    [[nodiscard]] size_type size() const {
+        return instructions.size();
+    }
+
+    [[nodiscard]] Inst& front() {
+        return instructions.front();
+    }
+    [[nodiscard]] const Inst& front() const {
+        return instructions.front();
+    }
+
+    [[nodiscard]] Inst& back() {
+        return instructions.back();
+    }
+    [[nodiscard]] const Inst& back() const {
+        return instructions.back();
+    }
+
+    [[nodiscard]] iterator begin() {
+        return instructions.begin();
+    }
+    [[nodiscard]] const_iterator begin() const {
+        return instructions.begin();
+    }
+    [[nodiscard]] iterator end() {
+        return instructions.end();
+    }
+    [[nodiscard]] const_iterator end() const {
+        return instructions.end();
+    }
+
+    [[nodiscard]] reverse_iterator rbegin() {
+        return instructions.rbegin();
+    }
+    [[nodiscard]] const_reverse_iterator rbegin() const {
+        return instructions.rbegin();
+    }
+    [[nodiscard]] reverse_iterator rend() {
+        return instructions.rend();
+    }
+    [[nodiscard]] const_reverse_iterator rend() const {
+        return instructions.rend();
+    }
+
+    [[nodiscard]] const_iterator cbegin() const {
+        return instructions.cbegin();
+    }
+    [[nodiscard]] const_iterator cend() const {
+        return instructions.cend();
+    }
+
+    [[nodiscard]] const_reverse_iterator crbegin() const {
+        return instructions.crbegin();
+    }
+    [[nodiscard]] const_reverse_iterator crend() const {
+        return instructions.crend();
+    }
+
+private:
+    /// Starting location of this block
+    u32 location_begin;
+    /// End location of this block
+    u32 location_end;
+
+    /// List of instructions in this block.
+    InstructionList instructions;
+
+    /// Memory pool for instruction list
+    boost::fast_pool_allocator<Inst, boost::default_user_allocator_malloc_free,
+                               boost::details::pool::null_mutex>
+        instruction_alloc_pool;
+};
+
+[[nodiscard]] std::string DumpBlock(const Block& block);
+
+[[nodiscard]] std::string DumpBlock(const Block& block,
+                                    const std::map<const Block*, size_t>& block_to_index,
+                                    std::map<const Inst*, size_t>& inst_to_index,
+                                    size_t& inst_index);
+
+} // namespace Shader::IR