shader: Initial recompiler work

1 files changed, 98 insertions, 0 deletions

diff --git a/src/shader_recompiler/frontend/ir/value.h b/src/shader_recompiler/frontend/ir/value.h
new file mode 100644
index 000000000..664dacf9d
--- /dev/null
+++ b/src/shader_recompiler/frontend/ir/value.h
@@ -0,0 +1,98 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "shader_recompiler/exception.h"
+#include "shader_recompiler/frontend/ir/attribute.h"
+#include "shader_recompiler/frontend/ir/pred.h"
+#include "shader_recompiler/frontend/ir/reg.h"
+#include "shader_recompiler/frontend/ir/type.h"
+
+namespace Shader::IR {
+
+class Block;
+class Inst;
+
+class Value {
+public:
+    Value() noexcept : type{IR::Type::Void}, inst{nullptr} {}
+    explicit Value(IR::Inst* value) noexcept;
+    explicit Value(IR::Block* value) noexcept;
+    explicit Value(IR::Reg value) noexcept;
+    explicit Value(IR::Pred value) noexcept;
+    explicit Value(IR::Attribute value) noexcept;
+    explicit Value(bool value) noexcept;
+    explicit Value(u8 value) noexcept;
+    explicit Value(u16 value) noexcept;
+    explicit Value(u32 value) noexcept;
+    explicit Value(u64 value) noexcept;
+
+    [[nodiscard]] bool IsIdentity() const noexcept;
+    [[nodiscard]] bool IsEmpty() const noexcept;
+    [[nodiscard]] bool IsImmediate() const noexcept;
+    [[nodiscard]] bool IsLabel() const noexcept;
+    [[nodiscard]] IR::Type Type() const noexcept;
+
+    [[nodiscard]] IR::Inst* Inst() const;
+    [[nodiscard]] IR::Block* Label() const;
+    [[nodiscard]] IR::Inst* InstRecursive() const;
+    [[nodiscard]] IR::Reg Reg() const;
+    [[nodiscard]] IR::Pred Pred() const;
+    [[nodiscard]] IR::Attribute Attribute() const;
+    [[nodiscard]] bool U1() const;
+    [[nodiscard]] u8 U8() const;
+    [[nodiscard]] u16 U16() const;
+    [[nodiscard]] u32 U32() const;
+    [[nodiscard]] u64 U64() const;
+
+private:
+    void ValidateAccess(IR::Type expected) const;
+
+    IR::Type type;
+    union {
+        IR::Inst* inst;
+        IR::Block* label;
+        IR::Reg reg;
+        IR::Pred pred;
+        IR::Attribute attribute;
+        bool imm_u1;
+        u8 imm_u8;
+        u16 imm_u16;
+        u32 imm_u32;
+        u64 imm_u64;
+    };
+};
+
+template <IR::Type type_>
+class TypedValue : public Value {
+public:
+    TypedValue() = default;
+
+    template <IR::Type other_type>
+    requires((other_type & type_) != IR::Type::Void) explicit(false)
+        TypedValue(const TypedValue<other_type>& value)
+        : Value(value) {}
+
+    explicit TypedValue(const Value& value) : Value(value) {
+        if ((value.Type() & type_) == IR::Type::Void) {
+            throw InvalidArgument("Incompatible types {} and {}", type_, value.Type());
+        }
+    }
+
+    explicit TypedValue(IR::Inst* inst) : TypedValue(Value(inst)) {}
+};
+
+using U1 = TypedValue<Type::U1>;
+using U8 = TypedValue<Type::U8>;
+using U16 = TypedValue<Type::U16>;
+using U32 = TypedValue<Type::U32>;
+using U64 = TypedValue<Type::U64>;
+using U32U64 = TypedValue<Type::U32 | Type::U64>;
+using U16U32U64 = TypedValue<Type::U16 | Type::U32 | Type::U64>;
+using UAny = TypedValue<Type::U8 | Type::U16 | Type::U32 | Type::U64>;
+using ZSCO = TypedValue<Type::ZSCO>;
+
+} // namespace Shader::IR