diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -1144,6 +1144,7 @@
   // non-integrated assemblers don't recognize .cgprofile section.
   PTO.CallGraphProfile = !CodeGenOpts.DisableIntegratedAS;
   PTO.Coroutines = LangOpts.Coroutines;
+  PTO.UniqueLinkageNames = CodeGenOpts.UniqueInternalLinkageNames;
 
   PassInstrumentationCallbacks PIC;
   StandardInstrumentations SI(CodeGenOpts.DebugPassManager);
@@ -1325,11 +1326,6 @@
       MPM = PB.buildPerModuleDefaultPipeline(Level);
     }
 
-    // Add UniqueInternalLinkageNames Pass which renames internal linkage
-    // symbols with unique names.
-    if (CodeGenOpts.UniqueInternalLinkageNames)
-      MPM.addPass(UniqueInternalLinkageNamesPass());
-
     if (!CodeGenOpts.MemoryProfileOutput.empty()) {
       MPM.addPass(createModuleToFunctionPassAdaptor(MemProfilerPass()));
       MPM.addPass(ModuleMemProfilerPass());
diff --git a/llvm/include/llvm/Passes/PassBuilder.h b/llvm/include/llvm/Passes/PassBuilder.h
--- a/llvm/include/llvm/Passes/PassBuilder.h
+++ b/llvm/include/llvm/Passes/PassBuilder.h
@@ -127,6 +127,9 @@
   /// Tuning option to enable/disable function merging. Its default value is
   /// false.
   bool MergeFunctions;
+
+  /// Uniquefy function linkage name. Its default value is false.
+  bool UniqueLinkageNames;
 };
 
 /// This class provides access to building LLVM's passes.
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -1001,6 +1001,11 @@
                                                ThinLTOPhase Phase) {
   ModulePassManager MPM(DebugLogging);
 
+  // Add UniqueInternalLinkageNames Pass which renames internal linkage
+  // symbols with unique names.
+  if (PTO.UniqueLinkageNames)
+    MPM.addPass(UniqueInternalLinkageNamesPass());
+
   // Place pseudo probe instrumentation as the first pass of the pipeline to
   // minimize the impact of optimization changes.
   if (PGOOpt && PGOOpt->PseudoProbeForProfiling &&
@@ -1764,6 +1769,11 @@
 
   ModulePassManager MPM(DebugLogging);
 
+  // Add UniqueInternalLinkageNames Pass which renames internal linkage
+  // symbols with unique names.
+  if (PTO.UniqueLinkageNames)
+    MPM.addPass(UniqueInternalLinkageNamesPass());
+
   if (PGOOpt && (PGOOpt->Action == PGOOptions::IRInstr ||
                  PGOOpt->Action == PGOOptions::IRUse))
     addPGOInstrPassesForO0(
diff --git a/llvm/test/Transforms/UniqueLinkageNames/unique-internal-linkage-names.ll b/llvm/test/Transforms/UniqueLinkageNames/unique-internal-linkage-names.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/Transforms/UniqueLinkageNames/unique-internal-linkage-names.ll
@@ -0,0 +1,36 @@
+; RUN: opt -S -passes=unique-internal-linkage-names < %s | FileCheck %s
+
+define internal i32 @foo() !dbg !15 {
+entry:
+  ret i32 0, !dbg !18
+}
+
+define dso_local i32 (...)* @bar() !dbg !7 {
+entry:
+  ret i32 (...)* bitcast (i32 ()* @foo to i32 (...)*), !dbg !14
+}
+
+!llvm.dbg.cu = !{!0}
+!llvm.module.flags = !{!3, !4, !5}
+
+!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, enums: !2)
+!1 = !DIFile(filename: "test.c", directory: "")
+!2 = !{}
+!3 = !{i32 7, !"Dwarf Version", i32 4}
+!4 = !{i32 2, !"Debug Info Version", i32 3}
+!5 = !{i32 1, !"wchar_size", i32 4}
+!7 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 9, type: !8, scopeLine: 9, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
+!8 = !DISubroutineType(types: !9)
+!9 = !{!10}
+!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !11, size: 64)
+!11 = !DISubroutineType(types: !12)
+!12 = !{!13, null}
+!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!14 = !DILocation(line: 10, column: 3, scope: !7)
+!15 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 5, type: !16, scopeLine: 5, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition, unit: !0, retainedNodes: !2)
+!16 = !DISubroutineType(types: !17)
+!17 = !{!13}
+!18 = !DILocation(line: 6, column: 3, scope: !15)
+
+; CHECK: define internal i32 @foo.__uniq.{{[0-9a-f]+}}() [[ATTR:#[0-9]+]] !dbg ![[#DBG:]]
+; CHECK: ret {{.*}} @foo.__uniq.{{[0-9a-f]+}} {{.*}}