diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -198,8 +198,6 @@
 void initializeLowerIntrinsicsPass(PassRegistry&);
 void initializeLowerInvokeLegacyPassPass(PassRegistry&);
 void initializeLowerSwitchLegacyPassPass(PassRegistry &);
-void initializeLowerMatrixIntrinsicsLegacyPassPass(PassRegistry &);
-void initializeLowerMatrixIntrinsicsMinimalLegacyPassPass(PassRegistry &);
 void initializeKCFIPass(PassRegistry &);
 void initializeMIRAddFSDiscriminatorsPass(PassRegistry &);
 void initializeMIRCanonicalizerPass(PassRegistry &);
diff --git a/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp b/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
--- a/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp
@@ -2583,94 +2583,3 @@
     OS << "minimal";
   OS << '>';
 }
-
-namespace {
-
-class LowerMatrixIntrinsicsLegacyPass : public FunctionPass {
-public:
-  static char ID;
-
-  LowerMatrixIntrinsicsLegacyPass() : FunctionPass(ID) {
-    initializeLowerMatrixIntrinsicsLegacyPassPass(
-        *PassRegistry::getPassRegistry());
-  }
-
-  bool runOnFunction(Function &F) override {
-    auto &TTI = getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
-    auto &ORE = getAnalysis<OptimizationRemarkEmitterWrapperPass>().getORE();
-    auto &AA = getAnalysis<AAResultsWrapperPass>().getAAResults();
-    auto &DT = getAnalysis<DominatorTreeWrapperPass>().getDomTree();
-    auto &LI = getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
-    LowerMatrixIntrinsics LMT(F, TTI, &AA, &DT, &LI, &ORE);
-    bool C = LMT.Visit();
-    return C;
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<TargetTransformInfoWrapperPass>();
-    AU.addRequired<OptimizationRemarkEmitterWrapperPass>();
-    AU.addRequired<AAResultsWrapperPass>();
-    AU.addRequired<DominatorTreeWrapperPass>();
-    AU.addPreserved<DominatorTreeWrapperPass>();
-    AU.addRequired<LoopInfoWrapperPass>();
-    AU.addPreserved<LoopInfoWrapperPass>();
-  }
-};
-} // namespace
-
-static const char pass_name[] = "Lower the matrix intrinsics";
-char LowerMatrixIntrinsicsLegacyPass::ID = 0;
-INITIALIZE_PASS_BEGIN(LowerMatrixIntrinsicsLegacyPass, DEBUG_TYPE, pass_name,
-                      false, false)
-INITIALIZE_PASS_DEPENDENCY(OptimizationRemarkEmitterWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
-INITIALIZE_PASS_END(LowerMatrixIntrinsicsLegacyPass, DEBUG_TYPE, pass_name,
-                    false, false)
-
-Pass *llvm::createLowerMatrixIntrinsicsPass() {
-  return new LowerMatrixIntrinsicsLegacyPass();
-}
-
-namespace {
-
-/// A lightweight version of the matrix lowering pass that only requires TTI.
-/// Advanced features that require DT, AA or ORE like tiling are disabled. This
-/// is used to lower matrix intrinsics if the main lowering pass is not run, for
-/// example with -O0.
-class LowerMatrixIntrinsicsMinimalLegacyPass : public FunctionPass {
-public:
-  static char ID;
-
-  LowerMatrixIntrinsicsMinimalLegacyPass() : FunctionPass(ID) {
-    initializeLowerMatrixIntrinsicsMinimalLegacyPassPass(
-        *PassRegistry::getPassRegistry());
-  }
-
-  bool runOnFunction(Function &F) override {
-    auto &TTI = getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
-    LowerMatrixIntrinsics LMT(F, TTI, nullptr, nullptr, nullptr, nullptr);
-    bool C = LMT.Visit();
-    return C;
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<TargetTransformInfoWrapperPass>();
-    AU.setPreservesCFG();
-  }
-};
-} // namespace
-
-static const char pass_name_minimal[] = "Lower the matrix intrinsics (minimal)";
-char LowerMatrixIntrinsicsMinimalLegacyPass::ID = 0;
-INITIALIZE_PASS_BEGIN(LowerMatrixIntrinsicsMinimalLegacyPass,
-                      "lower-matrix-intrinsics-minimal", pass_name_minimal,
-                      false, false)
-INITIALIZE_PASS_END(LowerMatrixIntrinsicsMinimalLegacyPass,
-                    "lower-matrix-intrinsics-minimal", pass_name_minimal, false,
-                    false)
-
-Pass *llvm::createLowerMatrixIntrinsicsMinimalPass() {
-  return new LowerMatrixIntrinsicsMinimalLegacyPass();
-}
diff --git a/llvm/lib/Transforms/Scalar/Scalar.cpp b/llvm/lib/Transforms/Scalar/Scalar.cpp
--- a/llvm/lib/Transforms/Scalar/Scalar.cpp
+++ b/llvm/lib/Transforms/Scalar/Scalar.cpp
@@ -43,8 +43,6 @@
   initializeLowerConstantIntrinsicsPass(Registry);
   initializeLowerExpectIntrinsicPass(Registry);
   initializeLowerGuardIntrinsicLegacyPassPass(Registry);
-  initializeLowerMatrixIntrinsicsLegacyPassPass(Registry);
-  initializeLowerMatrixIntrinsicsMinimalLegacyPassPass(Registry);
   initializeLowerWidenableConditionLegacyPassPass(Registry);
   initializeMergeICmpsLegacyPassPass(Registry);
   initializeMergedLoadStoreMotionLegacyPassPass(Registry);