diff --git a/llvm/lib/Target/RISCV/RISCV.h b/llvm/lib/Target/RISCV/RISCV.h
index 884cb2e..2e4f536 100644
--- a/llvm/lib/Target/RISCV/RISCV.h
+++ b/llvm/lib/Target/RISCV/RISCV.h
@@ -25,6 +25,7 @@
 class MCOperand;
 class MachineInstr;
 class MachineOperand;
+class PassRegistry;
 
 void LowerRISCVMachineInstrToMCInst(const MachineInstr *MI, MCInst &OutMI,
                                     const AsmPrinter &AP);
@@ -32,6 +33,9 @@
                                          MCOperand &MCOp, const AsmPrinter &AP);
 
 FunctionPass *createRISCVISelDag(RISCVTargetMachine &TM);
+
+FunctionPass *createRISCVMergeBaseOffsetOptPass();
+void initializeRISCVMergeBaseOffsetOptPass(PassRegistry &);
 }
 
 #endif