1 files changed, 43 insertions, 0 deletions
diff --git a/backend/lib/Target/RISCV/RISCVImmediateMaterialization.h b/backend/lib/Target/RISCV/RISCVImmediateMaterialization.h
new file mode 100644
index 0000000..4d58ec2
--- /dev/null
+++ b/backend/lib/Target/RISCV/RISCVImmediateMaterialization.h
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef RCC_LIB_TARGET_RISCV_RISCVIMMEDIATEMATERIALIZATION_H
+#define RCC_LIB_TARGET_RISCV_RISCVIMMEDIATEMATERIALIZATION_H
+
+#include <cstddef>
+#include <cstdint>
+#include <vector>
+
+namespace rcc::riscv {
+
+enum class InstructionOpcode : std::uint32_t;
+class RISCVSubtargetFeatures;
+
+enum class ImmediateMaterializationOperandKind : std::uint8_t {
+  Immediate,
+  RegisterImmediate,
+};
+
+struct ImmediateMaterializationInstruction final {
+  InstructionOpcode Opcode;
+  std::int64_t Immediate = 0;
+  ImmediateMaterializationOperandKind OperandKind =
+      ImmediateMaterializationOperandKind::RegisterImmediate;
+};
+
+using ImmediateMaterializationSequence = std::vector<ImmediateMaterializationInstruction>;
+
+inline constexpr std::size_t DefaultRV64IntegerBuildCost = 5;
+
+[[nodiscard]] ImmediateMaterializationSequence
+generateRV64IntegerMaterialization(std::int64_t Value, const RISCVSubtargetFeatures &Features);
+
+[[nodiscard]] std::size_t estimateRV64IntegerBuildCost(std::int64_t Value,
+                                                       const RISCVSubtargetFeatures &Features);
+
+[[nodiscard]] bool
+shouldUseRV64IntegerConstantPool(std::int64_t Value, const RISCVSubtargetFeatures &Features,
+                                 std::size_t MaximumBuildCost = DefaultRV64IntegerBuildCost);
+
+} // namespace rcc::riscv
+
+#endif // RCC_LIB_TARGET_RISCV_RISCVIMMEDIATEMATERIALIZATION_H