diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 80fd7854ee7fa..a605b7e25b6f0 100644
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -88,7 +88,6 @@ void initializeBranchProbabilityInfoWrapperPassPass(PassRegistry&);
 void initializeBranchRelaxationPass(PassRegistry&);
 void initializeBreakCriticalEdgesPass(PassRegistry&);
 void initializeBreakFalseDepsPass(PassRegistry&);
-void initializeCanonicalizeAliasesLegacyPassPass(PassRegistry &);
 void initializeCanonicalizeFreezeInLoopsPass(PassRegistry &);
 void initializeCFGOnlyPrinterLegacyPassPass(PassRegistry&);
 void initializeCFGOnlyViewerLegacyPassPass(PassRegistry&);
diff --git a/llvm/include/llvm/Transforms/Scalar.h b/llvm/include/llvm/Transforms/Scalar.h
index edd492b0343d2..dbc4270e03675 100644
--- a/llvm/include/llvm/Transforms/Scalar.h
+++ b/llvm/include/llvm/Transforms/Scalar.h
@@ -523,7 +523,6 @@ FunctionPass *createLoopDataPrefetchPass();
 
 ///===---------------------------------------------------------------------===//
 ModulePass *createNameAnonGlobalPass();
-ModulePass *createCanonicalizeAliasesPass();
 
 //===----------------------------------------------------------------------===//
 //
diff --git a/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp b/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
index f229d4bf14e99..9101a1e41f7be 100644
--- a/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
+++ b/llvm/lib/Transforms/Utils/CanonicalizeAliases.cpp
@@ -65,23 +65,6 @@ static bool canonicalizeAliases(Module &M) {
     canonicalizeAlias(&GA, Changed);
   return Changed;
 }
-
-// Legacy pass that canonicalizes aliases.
-class CanonicalizeAliasesLegacyPass : public ModulePass {
-
-public:
-  /// Pass identification, replacement for typeid
-  static char ID;
-
-  /// Specify pass name for debug output
-  StringRef getPassName() const override { return "Canonicalize Aliases"; }
-
-  explicit CanonicalizeAliasesLegacyPass() : ModulePass(ID) {}
-
-  bool runOnModule(Module &M) override { return canonicalizeAliases(M); }
-};
-char CanonicalizeAliasesLegacyPass::ID = 0;
-
 } // anonymous namespace
 
 PreservedAnalyses CanonicalizeAliasesPass::run(Module &M,
@@ -91,14 +74,3 @@ PreservedAnalyses CanonicalizeAliasesPass::run(Module &M,
 
   return PreservedAnalyses::none();
 }
-
-INITIALIZE_PASS_BEGIN(CanonicalizeAliasesLegacyPass, "canonicalize-aliases",
-                      "Canonicalize aliases", false, false)
-INITIALIZE_PASS_END(CanonicalizeAliasesLegacyPass, "canonicalize-aliases",
-                    "Canonicalize aliases", false, false)
-
-namespace llvm {
-ModulePass *createCanonicalizeAliasesPass() {
-  return new CanonicalizeAliasesLegacyPass();
-}
-} // namespace llvm
diff --git a/llvm/lib/Transforms/Utils/Utils.cpp b/llvm/lib/Transforms/Utils/Utils.cpp
index f34f2df971b1b..cc822a0bf7b62 100644
--- a/llvm/lib/Transforms/Utils/Utils.cpp
+++ b/llvm/lib/Transforms/Utils/Utils.cpp
@@ -28,7 +28,6 @@ void llvm::initializeTransformUtils(PassRegistry &Registry) {
   initializeAssumeSimplifyPassLegacyPassPass(Registry);
   initializeAssumeBuilderPassLegacyPassPass(Registry);
   initializeBreakCriticalEdgesPass(Registry);
-  initializeCanonicalizeAliasesLegacyPassPass(Registry);
   initializeCanonicalizeFreezeInLoopsPass(Registry);
   initializeInstNamerPass(Registry);
   initializeLCSSAWrapperPassPass(Registry);