1 files changed, 266 insertions, 0 deletions
diff --git a/backend/include/rcc/CodeGen/TargetMIRTextInfo.h b/backend/include/rcc/CodeGen/TargetMIRTextInfo.h
new file mode 100644
index 0000000..3ed6022
--- /dev/null
+++ b/backend/include/rcc/CodeGen/TargetMIRTextInfo.h
@@ -0,0 +1,266 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_CODEGEN_TARGETMIRTEXTINFO_H
+#define RCC_CODEGEN_TARGETMIRTEXTINFO_H
+
+#include "rcc/CodeGen/MachineFrameInfo.h"
+#include "rcc/CodeGen/MachineIRTypes.h"
+#include "rcc/CodeGen/Register.h"
+#include "rcc/CodeGen/RegisterMask.h"
+#include "rcc/CodeGen/TargetConstant.h"
+#include "rcc/CodeGen/TargetFunctionState.h"
+#include "rcc/Support/Error.h"
+
+#include <cstdint>
+#include <memory>
+#include <optional>
+#include <span>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+#include <utility>
+#include <vector>
+
+namespace rcc {
+
+class TargetRegisterInfo;
+
+enum class MIRTargetNodeKind : std::uint8_t {
+  Null,
+  Scalar,
+  Sequence,
+  Mapping,
+  Count,
+};
+
+struct MIRTargetMappingEntry;
+
+struct MIRTargetNode final {
+  MIRTargetNode();
+  MIRTargetNode(const MIRTargetNode &);
+  MIRTargetNode &operator=(const MIRTargetNode &);
+  MIRTargetNode(MIRTargetNode &&) noexcept;
+  MIRTargetNode &operator=(MIRTargetNode &&) noexcept;
+  ~MIRTargetNode();
+
+  MIRTargetNodeKind Kind = MIRTargetNodeKind::Null;
+  std::string Scalar;
+  std::vector<MIRTargetNode> Sequence;
+  std::vector<MIRTargetMappingEntry> Mapping;
+
+  [[nodiscard]] static MIRTargetNode null();
+  [[nodiscard]] static MIRTargetNode scalar(std::string Value);
+  [[nodiscard]] static MIRTargetNode sequence(std::vector<MIRTargetNode> Values);
+  [[nodiscard]] static MIRTargetNode mapping(std::vector<MIRTargetMappingEntry> Entries);
+
+  [[nodiscard]] const MIRTargetNode *mappingValue(std::string_view Key) const noexcept;
+  [[nodiscard]] Expected<void> verify() const;
+
+  friend bool operator==(const MIRTargetNode &Left, const MIRTargetNode &Right);
+};
+
+struct MIRTargetMappingEntry final {
+  std::string Key;
+  MIRTargetNode Value;
+
+  friend bool operator==(const MIRTargetMappingEntry &Left,
+                         const MIRTargetMappingEntry &Right) = default;
+};
+
+using MIRTargetFunctionStateParser = Expected<TargetFunctionState> (*)(const MIRTargetNode &Node);
+using MIRTargetFunctionStatePrinter = Expected<MIRTargetNode> (*)(const TargetFunctionState &State);
+using MIRTargetConstantParser = Expected<TargetConstant> (*)(std::string_view Text);
+using MIRTargetConstantPrinter = Expected<std::string> (*)(const TargetConstant &Constant);
+
+struct MIRRegisterMaskDesc final {
+  std::string Name;
+  std::shared_ptr<const RegisterMask> Mask;
+};
+
+struct MIRTargetIndexDesc final {
+  std::string Name;
+  TargetIndex Index;
+};
+
+struct MIROperandFlagDesc final {
+  std::string Name;
+  std::uint32_t Value = 0;
+};
+
+struct MIRMachineMemOperandFlagDesc final {
+  std::string Name;
+  std::uint16_t Value = 0;
+};
+
+struct MIRVirtualRegisterFlagDesc final {
+  std::string Name;
+  std::uint8_t Value = 0;
+};
+
+struct MIRIntrinsicDesc final {
+  std::string Name;
+  IntrinsicID ID;
+};
+
+struct MIRCFIRegisterMappingDesc final {
+  PhysicalRegister Register;
+  std::uint32_t DwarfRegister = 0;
+  bool IsCanonical = true;
+};
+
+struct TargetMIRTextInfoDesc final {
+  std::vector<MIRRegisterMaskDesc> RegisterMasks;
+  std::vector<MIRTargetIndexDesc> TargetIndices;
+  std::uint32_t DirectOperandFlagMask = 0;
+  std::vector<MIROperandFlagDesc> DirectOperandFlags;
+  std::vector<MIROperandFlagDesc> BitmaskOperandFlags;
+  std::vector<MIRMachineMemOperandFlagDesc> MachineMemOperandFlags;
+  std::vector<MIRVirtualRegisterFlagDesc> VirtualRegisterFlags;
+  std::vector<MIRIntrinsicDesc> Intrinsics;
+  std::vector<MIRCFIRegisterMappingDesc> CFIRegisters;
+  std::vector<StackID> SupportedStackIDs{
+      StackID::defaultStack(),
+      StackID::noAllocStack(),
+  };
+  std::optional<TargetFunctionStateTypeID> FunctionStateType;
+  MIRTargetFunctionStateParser ParseFunctionState = nullptr;
+  MIRTargetFunctionStatePrinter PrintFunctionState = nullptr;
+  MIRTargetConstantParser ParseTargetConstant = nullptr;
+  MIRTargetConstantPrinter PrintTargetConstant = nullptr;
+};
+
+class TargetMIRTextInfo final {
+public:
+  TargetMIRTextInfo(const TargetMIRTextInfo &) = delete;
+  TargetMIRTextInfo &operator=(const TargetMIRTextInfo &) = delete;
+  TargetMIRTextInfo(TargetMIRTextInfo &&) noexcept = default;
+  TargetMIRTextInfo &operator=(TargetMIRTextInfo &&) noexcept = default;
+  ~TargetMIRTextInfo() = default;
+
+  [[nodiscard]] static Expected<TargetMIRTextInfo> create(TargetMIRTextInfoDesc Description,
+                                                          const TargetRegisterInfo &Registers);
+
+  [[nodiscard]] std::span<const MIRRegisterMaskDesc> registerMasks() const noexcept {
+    return Description.RegisterMasks;
+  }
+
+  [[nodiscard]] std::span<const MIRTargetIndexDesc> targetIndices() const noexcept {
+    return Description.TargetIndices;
+  }
+
+  [[nodiscard]] std::span<const MIROperandFlagDesc> directOperandFlags() const noexcept {
+    return Description.DirectOperandFlags;
+  }
+
+  [[nodiscard]] std::span<const MIROperandFlagDesc> bitmaskOperandFlags() const noexcept {
+    return Description.BitmaskOperandFlags;
+  }
+
+  [[nodiscard]] std::span<const MIRMachineMemOperandFlagDesc>
+  machineMemOperandFlags() const noexcept {
+    return Description.MachineMemOperandFlags;
+  }
+
+  [[nodiscard]] std::span<const MIRVirtualRegisterFlagDesc> virtualRegisterFlags() const noexcept {
+    return Description.VirtualRegisterFlags;
+  }
+
+  [[nodiscard]] std::span<const MIRIntrinsicDesc> intrinsics() const noexcept {
+    return Description.Intrinsics;
+  }
+
+  [[nodiscard]] std::shared_ptr<const RegisterMask>
+  registerMask(std::string_view Name) const noexcept;
+  [[nodiscard]] std::optional<std::string_view>
+  registerMaskName(const RegisterMask &Mask) const noexcept;
+
+  [[nodiscard]] std::optional<TargetIndex> targetIndex(std::string_view Name) const noexcept;
+  [[nodiscard]] std::optional<std::string_view> targetIndexName(TargetIndex Index) const noexcept;
+
+  [[nodiscard]] std::optional<std::uint32_t>
+  directOperandFlag(std::string_view Name) const noexcept;
+  [[nodiscard]] std::optional<std::uint32_t>
+  bitmaskOperandFlag(std::string_view Name) const noexcept;
+  [[nodiscard]] Expected<std::vector<std::string_view>> operandFlagNames(std::uint32_t Flags) const;
+  [[nodiscard]] Expected<void> validateOperandFlags(std::uint32_t Flags) const;
+
+  [[nodiscard]] std::optional<std::uint16_t>
+  machineMemOperandFlag(std::string_view Name) const noexcept;
+  [[nodiscard]] Expected<std::vector<std::string_view>>
+  machineMemOperandFlagNames(std::uint16_t Flags) const;
+  [[nodiscard]] Expected<void> validateMachineMemOperandFlags(std::uint16_t Flags) const;
+
+  [[nodiscard]] std::optional<std::uint8_t>
+  virtualRegisterFlag(std::string_view Name) const noexcept;
+  [[nodiscard]] Expected<std::vector<std::string_view>>
+  virtualRegisterFlagNames(std::uint8_t Flags) const;
+  [[nodiscard]] Expected<void> validateVirtualRegisterFlags(std::uint8_t Flags) const;
+
+  [[nodiscard]] std::optional<IntrinsicID> intrinsic(std::string_view Name) const noexcept;
+  [[nodiscard]] std::optional<std::string_view> intrinsicName(IntrinsicID ID) const noexcept;
+
+  [[nodiscard]] std::optional<std::uint32_t>
+  dwarfRegister(PhysicalRegister Register) const noexcept;
+  [[nodiscard]] std::optional<PhysicalRegister>
+  physicalRegister(std::uint32_t DwarfRegister) const noexcept;
+
+  [[nodiscard]] std::span<const StackID> supportedStackIDs() const noexcept {
+    return Description.SupportedStackIDs;
+  }
+
+  [[nodiscard]] bool supportsStackID(StackID ID) const noexcept {
+    return SupportedStackIDs.contains(ID.value());
+  }
+
+  [[nodiscard]] std::uint32_t directOperandFlagMask() const noexcept {
+    return Description.DirectOperandFlagMask;
+  }
+
+  [[nodiscard]] std::uint32_t serializableOperandFlagMask() const noexcept {
+    return SerializableOperandFlagMask;
+  }
+
+  [[nodiscard]] std::uint16_t serializableMachineMemOperandFlagMask() const noexcept {
+    return SerializableMachineMemOperandFlagMask;
+  }
+
+  [[nodiscard]] std::uint8_t serializableVirtualRegisterFlagMask() const noexcept {
+    return SerializableVirtualRegisterFlagMask;
+  }
+
+  [[nodiscard]] std::optional<TargetFunctionStateTypeID> functionStateType() const noexcept {
+    return Description.FunctionStateType;
+  }
+
+  [[nodiscard]] Expected<TargetFunctionState> parseFunctionState(const MIRTargetNode &Node) const;
+  [[nodiscard]] Expected<MIRTargetNode> printFunctionState(const TargetFunctionState &State) const;
+  [[nodiscard]] Expected<TargetConstant> parseTargetConstant(std::string_view Text) const;
+  [[nodiscard]] Expected<std::string> printTargetConstant(const TargetConstant &Constant) const;
+
+private:
+  explicit TargetMIRTextInfo(TargetMIRTextInfoDesc Description)
+      : Description(std::move(Description)) {}
+
+  TargetMIRTextInfoDesc Description;
+  std::unordered_map<std::string, std::size_t> RegisterMaskNameToIndex;
+  std::unordered_map<std::string, std::size_t> TargetIndexNameToIndex;
+  std::unordered_map<TargetIndex, std::size_t> TargetIndexToIndex;
+  std::unordered_map<std::string, std::size_t> DirectOperandFlagNameToIndex;
+  std::unordered_map<std::uint32_t, std::size_t> DirectOperandFlagToIndex;
+  std::unordered_map<std::string, std::size_t> BitmaskOperandFlagNameToIndex;
+  std::unordered_map<std::string, std::size_t> MachineMemOperandFlagNameToIndex;
+  std::unordered_map<std::string, std::size_t> VirtualRegisterFlagNameToIndex;
+  std::unordered_map<std::string, std::size_t> IntrinsicNameToIndex;
+  std::unordered_map<IntrinsicID, std::size_t> IntrinsicToIndex;
+  std::unordered_map<PhysicalRegister, std::uint32_t> RegisterToDwarf;
+  std::unordered_map<std::uint32_t, PhysicalRegister> DwarfToRegister;
+  std::unordered_set<std::uint32_t> SupportedStackIDs;
+  std::uint32_t SerializableOperandFlagMask = 0;
+  std::uint16_t SerializableMachineMemOperandFlagMask = 0;
+  std::uint8_t SerializableVirtualRegisterFlagMask = 0;
+};
+
+} // namespace rcc
+
+#endif // RCC_CODEGEN_TARGETMIRTEXTINFO_H