1 files changed, 94 insertions, 0 deletions
diff --git a/backend/include/rcc/Tooling/BackendInvocation.h b/backend/include/rcc/Tooling/BackendInvocation.h
new file mode 100644
index 0000000..c50148a
--- /dev/null
+++ b/backend/include/rcc/Tooling/BackendInvocation.h
@@ -0,0 +1,94 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_TOOLING_BACKENDINVOCATION_H
+#define RCC_TOOLING_BACKENDINVOCATION_H
+
+#include "rcc/CodeGen/CommandFlags.h"
+#include "rcc/Support/Error.h"
+#include "rcc/Target/TargetOptions.h"
+
+#include <cstdint>
+#include <memory>
+#include <optional>
+#include <span>
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace rcc {
+
+class TargetDescription;
+class Target;
+class TargetMachine;
+
+namespace tooling {
+
+inline constexpr std::uint32_t BackendInvocationSchemaVersion = 1;
+inline constexpr std::string_view LLVMReferenceRevision =
+    "2b40c303e79f64c5c7642032554eda026594d604";
+inline constexpr std::string_view GenericOpcodeReferenceVersion = "rcc-generic-opcode-v1";
+inline constexpr std::string_view CompilerBuildFingerprint = "rcc-backend-0.1.0-stage17";
+
+enum class LayoutOwnership : std::uint8_t {
+  NativeObject,
+  CompilerFinalLayout,
+  ExternalRelaxation,
+};
+
+using BackendOption = TargetOption;
+
+struct DeterminismOptions final {
+  std::uint64_t RandomSeed = 0;
+  std::uint32_t ThreadCount = 1;
+  bool StableScheduling = true;
+
+  friend bool operator==(const DeterminismOptions &, const DeterminismOptions &) = default;
+};
+
+struct BackendInvocation final {
+  std::uint32_t SchemaVersion = BackendInvocationSchemaVersion;
+  std::string Triple;
+  std::string CPU;
+  std::string TuneCPU;
+  std::vector<std::string> Features;
+  std::string ABI;
+  std::string DataLayout;
+  rcc::RelocationModel Relocation = rcc::RelocationModel::Static;
+  rcc::CodeModel Code = rcc::CodeModel::Small;
+  std::vector<BackendOption> TargetOptions;
+  LayoutOwnership Layout = LayoutOwnership::NativeObject;
+  std::string AssemblerFlavor;
+  std::string AssemblerVersion;
+  std::vector<BackendOption> AssemblerOptions;
+  rcc::OptimizationLevel Optimization = rcc::OptimizationLevel::O2;
+  std::vector<std::string> PassPipeline{"default"};
+  DeterminismOptions Determinism;
+  std::optional<std::uint64_t> ActionFuel;
+  std::vector<std::string> EnabledActions;
+  std::string MIRReferenceRevision{LLVMReferenceRevision};
+  std::string GenericOpcodeVersion{GenericOpcodeReferenceVersion};
+  std::string TargetABILoweringVersion;
+  std::string BuildFingerprint{CompilerBuildFingerprint};
+
+  [[nodiscard]] Expected<void> canonicalizeAndVerify();
+  [[nodiscard]] std::string canonicalText() const;
+
+  friend bool operator==(const BackendInvocation &, const BackendInvocation &) = default;
+};
+
+[[nodiscard]] Expected<BackendInvocation> defaultBackendInvocation(const Target &Target);
+[[nodiscard]] Expected<std::unique_ptr<TargetMachine>>
+createTargetMachine(const BackendInvocation &Invocation);
+[[nodiscard]] Expected<std::string>
+computeTargetDescriptionFingerprint(const TargetDescription &Target);
+[[nodiscard]] Expected<std::string> computeCacheKey(std::string_view CanonicalMIR,
+                                                    const BackendInvocation &Invocation,
+                                                    std::string_view TargetFingerprint);
+
+[[nodiscard]] std::string_view spelling(LayoutOwnership Value) noexcept;
+[[nodiscard]] Expected<LayoutOwnership> parseLayoutOwnership(std::string_view Value);
+
+} // namespace tooling
+} // namespace rcc
+
+#endif // RCC_TOOLING_BACKENDINVOCATION_H