diff --git a/llvm/include/llvm/Object/COFFImportFile.h b/llvm/include/llvm/Object/COFFImportFile.h
index 035bc17126da3..2c06f529ecdfc 100644
--- a/llvm/include/llvm/Object/COFFImportFile.h
+++ b/llvm/include/llvm/Object/COFFImportFile.h
@@ -45,26 +45,7 @@ class COFFImportFile : public SymbolicFile {
 
   void moveSymbolNext(DataRefImpl &Symb) const override { ++Symb.p; }
 
-  Error printSymbolName(raw_ostream &OS, DataRefImpl Symb) const override {
-    switch (Symb.p) {
-    case ImpSymbol:
-      OS << "__imp_";
-      break;
-    case ECAuxSymbol:
-      OS << "__imp_aux_";
-      break;
-    }
-    const char *Name = Data.getBufferStart() + sizeof(coff_import_header);
-    if (Symb.p != ECThunkSymbol && COFF::isArm64EC(getMachine())) {
-      if (std::optional<std::string> DemangledName =
-              getArm64ECDemangledFunctionName(Name)) {
-        OS << StringRef(*DemangledName);
-        return Error::success();
-      }
-    }
-    OS << StringRef(Name);
-    return Error::success();
-  }
+  Error printSymbolName(raw_ostream &OS, DataRefImpl Symb) const override;
 
   Expected<uint32_t> getSymbolFlags(DataRefImpl Symb) const override {
     return SymbolRef::SF_Global;
diff --git a/llvm/lib/Object/COFFImportFile.cpp b/llvm/lib/Object/COFFImportFile.cpp
index 477c5bf98249f..48c3ea0ed8f4e 100644
--- a/llvm/lib/Object/COFFImportFile.cpp
+++ b/llvm/lib/Object/COFFImportFile.cpp
@@ -84,6 +84,27 @@ StringRef COFFImportFile::getExportName() const {
   return name;
 }
 
+Error COFFImportFile::printSymbolName(raw_ostream &OS, DataRefImpl Symb) const {
+  switch (Symb.p) {
+  case ImpSymbol:
+    OS << "__imp_";
+    break;
+  case ECAuxSymbol:
+    OS << "__imp_aux_";
+    break;
+  }
+  const char *Name = Data.getBufferStart() + sizeof(coff_import_header);
+  if (Symb.p != ECThunkSymbol && COFF::isArm64EC(getMachine())) {
+    if (std::optional<std::string> DemangledName =
+            getArm64ECDemangledFunctionName(Name)) {
+      OS << StringRef(*DemangledName);
+      return Error::success();
+    }
+  }
+  OS << StringRef(Name);
+  return Error::success();
+}
+
 static uint16_t getImgRelRelocation(MachineTypes Machine) {
   switch (Machine) {
   default: