From 307fc0961972ac5264d6f3459978fbec95cad3a9 Mon Sep 17 00:00:00 2001
From: Richard-Qin-X <richard.qin.001@gmail.com>
Date: Wed, 19 Aug 2026 04:27:41 +0800
Subject: [RISCV][GlobalISel] Select and expand global addresses

---
 backend/include/rcc/Target/RISCV/RISCVFixupKinds.h  |  1 +
 backend/include/rcc/Target/RISCV/RISCVInstPrinter.h |  1 +
 backend/include/rcc/Target/RISCV/RISCVSubtarget.h   | 15 ++++++++++++++-
 3 files changed, 16 insertions(+), 1 deletion(-)

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

diff --git a/backend/include/rcc/Target/RISCV/RISCVFixupKinds.h b/backend/include/rcc/Target/RISCV/RISCVFixupKinds.h
index 7e9c8a2..e030bfc 100644
--- a/backend/include/rcc/Target/RISCV/RISCVFixupKinds.h
+++ b/backend/include/rcc/Target/RISCV/RISCVFixupKinds.h
@@ -14,6 +14,7 @@ enum class RISCVFixupKind : mc::MCFixupKind {
   Low12I,
   Low12S,
   PCRelativeHigh20,
+  GOTPCRelativeHigh20,
   PCRelativeLow12I,
   PCRelativeLow12S,
   JAL,
diff --git a/backend/include/rcc/Target/RISCV/RISCVInstPrinter.h b/backend/include/rcc/Target/RISCV/RISCVInstPrinter.h
index 1b80218..7e74ab2 100644
--- a/backend/include/rcc/Target/RISCV/RISCVInstPrinter.h
+++ b/backend/include/rcc/Target/RISCV/RISCVInstPrinter.h
@@ -18,6 +18,7 @@ enum class RISCVMCExprKind : std::uint32_t {
   PCRelativeLow = 3,
   AbsoluteHigh = 4,
   AbsoluteLow = 5,
+  GOTPCRelativeHigh = 6,
 };
 
 class RISCVInstPrinter final : public mc::MCInstPrinter {
diff --git a/backend/include/rcc/Target/RISCV/RISCVSubtarget.h b/backend/include/rcc/Target/RISCV/RISCVSubtarget.h
index c590be6..a77a045 100644
--- a/backend/include/rcc/Target/RISCV/RISCVSubtarget.h
+++ b/backend/include/rcc/Target/RISCV/RISCVSubtarget.h
@@ -3,6 +3,7 @@
 #ifndef RCC_TARGET_RISCV_RISCVSUBTARGET_H
 #define RCC_TARGET_RISCV_RISCVSUBTARGET_H
 
+#include "rcc/CodeGen/CommandFlags.h"
 #include "rcc/Support/Error.h"
 
 #include <cstdint>
@@ -88,7 +89,9 @@ private:
 
 class RISCVSubtarget final {
 public:
-  explicit RISCVSubtarget(RISCVSubtargetFeatures Features);
+  explicit RISCVSubtarget(RISCVSubtargetFeatures Features,
+                          RelocationModel Relocation = RelocationModel::Static,
+                          CodeModel Code = CodeModel::Small);
   RISCVSubtarget(const RISCVSubtarget &) = delete;
   RISCVSubtarget &operator=(const RISCVSubtarget &) = delete;
   RISCVSubtarget(RISCVSubtarget &&) = delete;
@@ -99,6 +102,14 @@ public:
     return Features;
   }
 
+  [[nodiscard]] RelocationModel relocationModel() const noexcept {
+    return Relocation;
+  }
+
+  [[nodiscard]] CodeModel codeModel() const noexcept {
+    return Code;
+  }
+
   [[nodiscard]] const TargetCallLowering *getCallLowering() const;
   [[nodiscard]] InstructionSelector *getInstructionSelector() const;
   [[nodiscard]] const LegalizerInfo *getLegalizerInfo() const;
@@ -106,6 +117,8 @@ public:
 
 private:
   RISCVSubtargetFeatures Features;
+  RelocationModel Relocation;
+  CodeModel Code;
   mutable std::unique_ptr<TargetCallLowering> CallLoweringInfo;
   mutable std::unique_ptr<InstructionSelector> InstSelector;
   mutable std::unique_ptr<LegalizerInfo> Legalizer;
-- 
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