diff --git a/lld/ELF/Driver.cpp b/lld/ELF/Driver.cpp
--- a/lld/ELF/Driver.cpp
+++ b/lld/ELF/Driver.cpp
@@ -1681,7 +1681,7 @@
 
   for (InputFile *file : lto->compile()) {
     auto *obj = cast<ObjFile<ELFT>>(file);
-    obj->parse(/*ignoreComdats=*/true);
+    obj->parse();
     for (Symbol *sym : obj->getGlobalSymbols())
       sym->parseSymbolVersion();
     objectFiles.push_back(file);
diff --git a/lld/ELF/InputFiles.h b/lld/ELF/InputFiles.h
--- a/lld/ELF/InputFiles.h
+++ b/lld/ELF/InputFiles.h
@@ -203,7 +203,7 @@
     this->archiveName = std::string(archiveName);
   }
 
-  void parse(bool ignoreComdats = false);
+  void parse();
 
   StringRef getShtGroupSignature(ArrayRef<Elf_Shdr> sections,
                                  const Elf_Shdr &sec);
@@ -254,7 +254,7 @@
   DWARFCache *getDwarf();
 
 private:
-  void initializeSections(bool ignoreComdats);
+  void initializeSections();
   void initializeSymbols();
   void initializeJustSymbols();
 
diff --git a/lld/ELF/InputFiles.cpp b/lld/ELF/InputFiles.cpp
--- a/lld/ELF/InputFiles.cpp
+++ b/lld/ELF/InputFiles.cpp
@@ -389,12 +389,12 @@
   return makeArrayRef(this->symbols).slice(this->firstGlobal);
 }
 
-template <class ELFT> void ObjFile<ELFT>::parse(bool ignoreComdats) {
+template <class ELFT> void ObjFile<ELFT>::parse() {
   // Read a section table. justSymbols is usually false.
   if (this->justSymbols)
     initializeJustSymbols();
   else
-    initializeSections(ignoreComdats);
+    initializeSections();
 
   // Read a symbol table.
   initializeSymbols();
@@ -544,8 +544,7 @@
     prev->nextInSectionGroup = head;
 }
 
-template <class ELFT>
-void ObjFile<ELFT>::initializeSections(bool ignoreComdats) {
+template <class ELFT> void ObjFile<ELFT>::initializeSections() {
   const ELFFile<ELFT> &obj = this->getObj();
 
   ArrayRef<Elf_Shdr> objSections = CHECK(obj.sections(), this);
@@ -606,11 +605,8 @@
       if (entries[0] != GRP_COMDAT)
         fatal(toString(this) + ": unsupported SHT_GROUP format");
 
-      bool isNew =
-          ignoreComdats ||
-          symtab->comdatGroups.try_emplace(CachedHashStringRef(signature), this)
-              .second;
-      if (isNew) {
+      if (symtab->comdatGroups.try_emplace(CachedHashStringRef(signature), this)
+              .second) {
         if (config->relocatable)
           this->sections[i] = createInputSection(sec);
         selectedGroups.push_back(entries);
diff --git a/lld/test/ELF/lto/comdat.ll b/lld/test/ELF/lto/comdat.ll
--- a/lld/test/ELF/lto/comdat.ll
+++ b/lld/test/ELF/lto/comdat.ll
@@ -5,11 +5,11 @@
 
 ; CHECK:      Name: foo
 ; CHECK-NEXT: Value:
-; CHECK-NEXT: Size: 1
+; CHECK-NEXT: Size: 0
 ; CHECK-NEXT: Binding: Global
 ; CHECK-NEXT: Type: Function
 ; CHECK-NEXT: Other: 0
-; CHECK-NEXT: Section: .text
+; CHECK-NEXT: Section: Undefined
 
 target triple = "x86_64-unknown-linux-gnu"
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
@@ -18,4 +18,3 @@
 define void @foo() comdat {
   ret void
 }
-
diff --git a/lld/test/ELF/lto/comdat2.ll b/lld/test/ELF/lto/comdat2.ll
--- a/lld/test/ELF/lto/comdat2.ll
+++ b/lld/test/ELF/lto/comdat2.ll
@@ -23,13 +23,13 @@
 ; CHECK: Symbol {
 ; CHECK:   Name: foo
 ; CHECK-NEXT:   Value:
-; CHECK-NEXT:   Size: 1
+; CHECK-NEXT:   Size: 0
 ; CHECK-NEXT:   Binding: Global
 ; CHECK-NEXT:   Type: Function
 ; CHECK-NEXT:   Other [
 ; CHECK-NEXT:     STV_PROTECTED
 ; CHECK-NEXT:   ]
-; CHECK-NEXT:   Section: .text
+; CHECK-NEXT:   Section: Undefined
 ; CHECK-NEXT: }
 
 ; OTHER: Symbol {
diff --git a/lld/wasm/InputFiles.h b/lld/wasm/InputFiles.h
--- a/lld/wasm/InputFiles.h
+++ b/lld/wasm/InputFiles.h
@@ -95,7 +95,7 @@
   }
   static bool classof(const InputFile *f) { return f->kind() == ObjectKind; }
 
-  void parse(bool ignoreComdats = false);
+  void parse();
 
   // Returns the underlying wasm file.
   const WasmObjectFile *getWasmObj() const { return wasmObj.get(); }
diff --git a/lld/wasm/InputFiles.cpp b/lld/wasm/InputFiles.cpp
--- a/lld/wasm/InputFiles.cpp
+++ b/lld/wasm/InputFiles.cpp
@@ -248,7 +248,7 @@
   }
 }
 
-void ObjFile::parse(bool ignoreComdats) {
+void ObjFile::parse() {
   // Parse a memory buffer as a wasm file.
   LLVM_DEBUG(dbgs() << "Parsing object: " << toString(this) << "\n");
   std::unique_ptr<Binary> bin = CHECK(createBinary(mb), toString(this));
@@ -313,8 +313,7 @@
 
   ArrayRef<StringRef> comdats = wasmObj->linkingData().Comdats;
   for (StringRef comdat : comdats) {
-    bool isNew = ignoreComdats || symtab->addComdat(comdat);
-    keptComdats.push_back(isNew);
+    keptComdats.push_back(symtab->addComdat(comdat));
   }
 
   // Populate `Segments`.
diff --git a/lld/wasm/SymbolTable.cpp b/lld/wasm/SymbolTable.cpp
--- a/lld/wasm/SymbolTable.cpp
+++ b/lld/wasm/SymbolTable.cpp
@@ -53,7 +53,7 @@
 
   // Regular object file
   auto *f = cast<ObjFile>(file);
-  f->parse(false);
+  f->parse();
   objectFiles.push_back(f);
 }
 
@@ -78,7 +78,7 @@
 
   for (StringRef filename : lto->compile()) {
     auto *obj = make<ObjFile>(MemoryBufferRef(filename, "lto.tmp"), "");
-    obj->parse(true);
+    obj->parse();
     objectFiles.push_back(obj);
   }
 }