From 3e15bfd7b075209ec3b65d30d0611e060f6fbb77 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Fri, 7 Aug 2026 22:03:11 +0800
Subject: [RISCV] Complete RV64GC instruction description

---
 backend/include/rcc/Target/RISCV/RISCVTarget.h | 55 +++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 2 deletions(-)

(limited to 'backend/include/rcc/Target')

diff --git a/backend/include/rcc/Target/RISCV/RISCVTarget.h b/backend/include/rcc/Target/RISCV/RISCVTarget.h
index 948e22d..ca0849d 100644
--- a/backend/include/rcc/Target/RISCV/RISCVTarget.h
+++ b/backend/include/rcc/Target/RISCV/RISCVTarget.h
@@ -3,20 +3,71 @@
 #ifndef RCC_TARGET_RISCV_RISCVTARGET_H
 #define RCC_TARGET_RISCV_RISCVTARGET_H
 
-#include "rcc/CodeGen/TargetMIRTextInfo.h"
-#include "rcc/CodeGen/TargetRegisterInfo.h"
+#include "rcc/CodeGen/TargetDescription.h"
 #include "rcc/Support/Error.h"
+#include "rcc/Target/RISCV/RISCVInstructions.h"
 #include "rcc/Target/RISCV/RISCVRegisters.h"
 
 #include <cstdint>
 #include <memory>
+#include <span>
+#include <string_view>
 
 namespace rcc::riscv {
 
+struct SchedulingClassInfo final {
+  SchedulingClassID ID;
+  std::string_view Name;
+  std::uint32_t MicroOps = 0;
+  std::uint32_t Latency = 0;
+};
+
+struct EncodingCategoryInfo final {
+  EncodingCategoryID ID;
+  std::string_view Name;
+  std::uint32_t SizeInBytes = 0;
+};
+
+struct AssemblyFormatInfo final {
+  AssemblyFormatID ID;
+  std::string_view Name;
+};
+
+struct AssemblyInstructionInfo final {
+  Opcode InstructionOpcode;
+  std::string_view Mnemonic;
+  AssemblyFormatID Format;
+};
+
+struct CallingConventionInfo final {
+  CallingConvention ID;
+  std::string_view Name;
+  RegisterClassID IntegerRegisterClass;
+  RegisterClassID FloatingRegisterClass;
+  std::span<const PhysicalRegister> IntegerArgumentRegisters;
+  std::span<const PhysicalRegister> FloatingArgumentRegisters;
+  std::span<const PhysicalRegister> IntegerReturnRegisters;
+  std::span<const PhysicalRegister> FloatingReturnRegisters;
+  std::string_view PreservedMaskName;
+  std::uint32_t StackAlignmentBytes = 0;
+  std::uint32_t StackArgumentAlignmentBytes = 0;
+  std::uint32_t ShadowSpaceBytes = 0;
+  bool SupportsVarArgs = false;
+  bool SupportsTailCalls = false;
+};
+
 [[nodiscard]] Expected<PhysicalRegister> physicalRegister(PhysicalRegisterID ID);
 [[nodiscard]] Expected<TargetRegisterInfo> createRegisterInfo();
 [[nodiscard]] Expected<TargetMIRTextInfo> createMIRTextInfo();
+[[nodiscard]] Expected<TargetDescription> createTargetDescription();
 [[nodiscard]] std::shared_ptr<const RegisterMask> createCallPreservedMask();
+[[nodiscard]] std::span<const SchedulingClassInfo> schedulingClasses() noexcept;
+[[nodiscard]] std::span<const EncodingCategoryInfo> encodingCategories() noexcept;
+[[nodiscard]] std::span<const AssemblyFormatInfo> assemblyFormats() noexcept;
+[[nodiscard]] std::span<const AssemblyInstructionInfo> assemblyInstructions() noexcept;
+[[nodiscard]] const AssemblyInstructionInfo *assemblyInstruction(Opcode InstructionOpcode) noexcept;
+[[nodiscard]] std::span<const CallingConventionInfo> callingConventions() noexcept;
+[[nodiscard]] const CallingConventionInfo *callingConvention(CallingConvention ID) noexcept;
 
 } // namespace rcc::riscv
 
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