From 2d48a7b4d0666ad16d03a22d85712617a0849046 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sat, 9 Jan 2021 03:30:07 -0300
Subject: shader: Initial recompiler work
---
.../frontend/ir/microinstruction.h | 82 ++++++++++++++++++++++
1 file changed, 82 insertions(+)
create mode 100644 src/shader_recompiler/frontend/ir/microinstruction.h
(limited to 'src/shader_recompiler/frontend/ir/microinstruction.h')
diff --git a/src/shader_recompiler/frontend/ir/microinstruction.h b/src/shader_recompiler/frontend/ir/microinstruction.h
new file mode 100644
index 0000000000..43460b9505
--- /dev/null
+++ b/src/shader_recompiler/frontend/ir/microinstruction.h
@@ -0,0 +1,82 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+
+#include <boost/intrusive/list.hpp>
+
+#include "common/common_types.h"
+#include "shader_recompiler/frontend/ir/opcode.h"
+#include "shader_recompiler/frontend/ir/type.h"
+#include "shader_recompiler/frontend/ir/value.h"
+
+namespace Shader::IR {
+
+constexpr size_t MAX_ARG_COUNT = 4;
+
+class Inst : public boost::intrusive::list_base_hook<> {
+public:
+ explicit Inst(Opcode op_) noexcept : op(op_) {}
+
+ /// Get the number of uses this instruction has.
+ [[nodiscard]] int UseCount() const noexcept {
+ return use_count;
+ }
+
+ /// Determines whether this instruction has uses or not.
+ [[nodiscard]] bool HasUses() const noexcept {
+ return use_count > 0;
+ }
+
+ /// Get the opcode this microinstruction represents.
+ [[nodiscard]] IR::Opcode Opcode() const noexcept {
+ return op;
+ }
+
+ /// Determines whether or not this instruction may have side effects.
+ [[nodiscard]] bool MayHaveSideEffects() const noexcept;
+
+ /// Determines whether or not this instruction is a pseudo-instruction.
+ /// Pseudo-instructions depend on their parent instructions for their semantics.
+ [[nodiscard]] bool IsPseudoInstruction() const noexcept;
+
+ /// Determines if there is a pseudo-operation associated with this instruction.
+ [[nodiscard]] bool HasAssociatedPseudoOperation() const noexcept;
+ /// Gets a pseudo-operation associated with this instruction
+ [[nodiscard]] Inst* GetAssociatedPseudoOperation(IR::Opcode opcode);
+
+ /// Get the number of arguments this instruction has.
+ [[nodiscard]] size_t NumArgs() const;
+
+ /// Get the type this instruction returns.
+ [[nodiscard]] IR::Type Type() const;
+
+ /// Get the value of a given argument index.
+ [[nodiscard]] Value Arg(size_t index) const;
+ /// Set the value of a given argument index.
+ void SetArg(size_t index, Value value);
+
+ void Invalidate();
+ void ClearArgs();
+
+ void ReplaceUsesWith(Value replacement);
+
+private:
+ void Use(const Value& value);
+ void UndoUse(const Value& value);
+
+ IR::Opcode op{};
+ int use_count{};
+ std::array<Value, MAX_ARG_COUNT> args{};
+ Inst* zero_inst{};
+ Inst* sign_inst{};
+ Inst* carry_inst{};
+ Inst* overflow_inst{};
+ Inst* zsco_inst{};
+ u64 flags{};
+};
+
+} // namespace Shader::IR
--
cgit v1.2.3-70-g09d2