From 444db30751380e8fe459bfeae4c5bb2a93c596eb Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Thu, 13 Aug 2026 13:10:47 +0800
Subject: [TableGen] Split the target description generator

---
 backend/utils/TableGen/TableGenBackends.h | 50 +++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 backend/utils/TableGen/TableGenBackends.h

(limited to 'backend/utils/TableGen/TableGenBackends.h')

diff --git a/backend/utils/TableGen/TableGenBackends.h b/backend/utils/TableGen/TableGenBackends.h
new file mode 100644
index 0000000..7835efb
--- /dev/null
+++ b/backend/utils/TableGen/TableGenBackends.h
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+// NOLINTNEXTLINE(llvm-header-guard)
+#ifndef RCC_UTILS_TABLEGEN_TABLEGENBACKENDS_H
+#define RCC_UTILS_TABLEGEN_TABLEGENBACKENDS_H
+
+#include "Common/CodeGenTarget.h"
+
+#include <optional>
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace rcc::targetgen {
+
+struct GeneratedDescription final {
+  std::string RegisterHeader;
+  std::string InstructionHeader;
+  std::string TargetTables;
+};
+
+struct DescriptionGenerationResult final {
+  std::optional<GeneratedDescription> Output;
+  std::vector<TextDiagnostic> Diagnostics;
+
+  [[nodiscard]] bool succeeded() const noexcept {
+    return Output.has_value() && Diagnostics.empty();
+  }
+};
+
+[[nodiscard]] std::string emitRegisterHeader(const NormalizedTargetModel &Model,
+                                             std::string_view SourceName);
+[[nodiscard]] std::string emitRegisterInfo(const NormalizedTargetModel &Model,
+                                           std::string_view SourceName);
+[[nodiscard]] std::string emitRegisterBanks(const NormalizedTargetModel &Model);
+[[nodiscard]] std::string emitInstructionHeader(const NormalizedTargetModel &Model,
+                                                std::string_view SourceName);
+[[nodiscard]] std::string emitInstructionInfo(const NormalizedTargetModel &Model);
+[[nodiscard]] std::string emitCallingConventions(const NormalizedTargetModel &Model);
+[[nodiscard]] std::string emitCodeEmitter(const NormalizedTargetModel &Model);
+[[nodiscard]] std::string emitAssemblyWriter(const NormalizedTargetModel &Model);
+[[nodiscard]] std::string emitSubtarget(const NormalizedTargetModel &Model);
+[[nodiscard]] std::string emitSearchableTables(const NormalizedTargetModel &Model);
+
+[[nodiscard]] DescriptionGenerationResult generateDescription(const std::string &SourceName,
+                                                              std::string SourceText);
+
+} // namespace rcc::targetgen
+
+#endif // RCC_UTILS_TABLEGEN_TABLEGENBACKENDS_H
-- 
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