diff --git a/llvm/include/llvm/CodeGen/LiveRegMatrix.h b/llvm/include/llvm/CodeGen/LiveRegMatrix.h
index 2b32308c7c075..84050bf170737 100644
--- a/llvm/include/llvm/CodeGen/LiveRegMatrix.h
+++ b/llvm/include/llvm/CodeGen/LiveRegMatrix.h
@@ -37,7 +37,9 @@ class MachineFunction;
 class TargetRegisterInfo;
 class VirtRegMap;
 
-class LiveRegMatrix : public MachineFunctionPass {
+class LiveRegMatrix {
+  friend class LiveRegMatrixWrapperLegacy;
+  friend class LiveRegMatrixAnalysis;
   const TargetRegisterInfo *TRI = nullptr;
   LiveIntervals *LIS = nullptr;
   VirtRegMap *VRM = nullptr;
@@ -57,15 +59,17 @@ class LiveRegMatrix : public MachineFunctionPass {
   unsigned RegMaskVirtReg = 0;
   BitVector RegMaskUsable;
 
-  // MachineFunctionPass boilerplate.
-  void getAnalysisUsage(AnalysisUsage &) const override;
-  bool runOnMachineFunction(MachineFunction &) override;
-  void releaseMemory() override;
+  LiveRegMatrix() = default;
+  void releaseMemory();
 
 public:
-  static char ID;
+  LiveRegMatrix(LiveRegMatrix &&Other)
+      : TRI(Other.TRI), LIS(Other.LIS), VRM(Other.VRM), UserTag(Other.UserTag),
+        Matrix(std::move(Other.Matrix)), Queries(std::move(Other.Queries)),
+        RegMaskTag(Other.RegMaskTag), RegMaskVirtReg(Other.RegMaskVirtReg),
+        RegMaskUsable(std::move(Other.RegMaskUsable)) {}
 
-  LiveRegMatrix();
+  void init(MachineFunction &MF, LiveIntervals &LIS, VirtRegMap &VRM);
 
   //===--------------------------------------------------------------------===//
   // High-level interface.
@@ -159,6 +163,32 @@ class LiveRegMatrix : public MachineFunctionPass {
   Register getOneVReg(unsigned PhysReg) const;
 };
 
+class LiveRegMatrixWrapperLegacy : public MachineFunctionPass {
+  LiveRegMatrix LRM;
+
+public:
+  static char ID;
+
+  LiveRegMatrixWrapperLegacy() : MachineFunctionPass(ID) {}
+
+  LiveRegMatrix &getLRM() { return LRM; }
+  const LiveRegMatrix &getLRM() const { return LRM; }
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+  bool runOnMachineFunction(MachineFunction &MF) override;
+  void releaseMemory() override;
+};
+
+class LiveRegMatrixAnalysis : public AnalysisInfoMixin<LiveRegMatrixAnalysis> {
+  friend AnalysisInfoMixin<LiveRegMatrixAnalysis>;
+  static AnalysisKey Key;
+
+public:
+  using Result = LiveRegMatrix;
+
+  LiveRegMatrix run(MachineFunction &MF, MachineFunctionAnalysisManager &MFAM);
+};
+
 } // end namespace llvm
 
 #endif // LLVM_CODEGEN_LIVEREGMATRIX_H
diff --git a/llvm/include/llvm/InitializePasses.h b/llvm/include/llvm/InitializePasses.h
index 537166c393c7f..a879089d2fe61 100644
--- a/llvm/include/llvm/InitializePasses.h
+++ b/llvm/include/llvm/InitializePasses.h
@@ -156,7 +156,7 @@ void initializeLiveDebugValuesPass(PassRegistry &);
 void initializeLiveDebugVariablesPass(PassRegistry &);
 void initializeLiveIntervalsWrapperPassPass(PassRegistry &);
 void initializeLiveRangeShrinkPass(PassRegistry &);
-void initializeLiveRegMatrixPass(PassRegistry &);
+void initializeLiveRegMatrixWrapperLegacyPass(PassRegistry &);
 void initializeLiveStacksPass(PassRegistry &);
 void initializeLiveVariablesWrapperPassPass(PassRegistry &);
 void initializeLoadStoreOptPass(PassRegistry &);
diff --git a/llvm/include/llvm/Passes/MachinePassRegistry.def b/llvm/include/llvm/Passes/MachinePassRegistry.def
index d92fd19a1882c..4a4f43475e7d2 100644
--- a/llvm/include/llvm/Passes/MachinePassRegistry.def
+++ b/llvm/include/llvm/Passes/MachinePassRegistry.def
@@ -96,6 +96,7 @@ LOOP_PASS("loop-term-fold", LoopTermFoldPass())
 // computed. (We still either need to regenerate kill flags after regalloc, or
 // preferably fix the scavenger to not depend on them).
 MACHINE_FUNCTION_ANALYSIS("live-intervals", LiveIntervalsAnalysis())
+MACHINE_FUNCTION_ANALYSIS("live-reg-matrix", LiveRegMatrixAnalysis())
 MACHINE_FUNCTION_ANALYSIS("live-vars", LiveVariablesAnalysis())
 MACHINE_FUNCTION_ANALYSIS("machine-block-freq", MachineBlockFrequencyAnalysis())
 MACHINE_FUNCTION_ANALYSIS("machine-branch-prob",
@@ -121,8 +122,8 @@ MACHINE_FUNCTION_ANALYSIS("virtregmap", VirtRegMapAnalysis())
 // MachinePostDominatorTreeAnalysis())
 // MACHINE_FUNCTION_ANALYSIS("machine-region-info",
 // MachineRegionInfoPassAnalysis())
-// ReachingDefAnalysisAnalysis()) MACHINE_FUNCTION_ANALYSIS("live-reg-matrix",
-// LiveRegMatrixAnalysis()) MACHINE_FUNCTION_ANALYSIS("gc-analysis",
+// MACHINE_FUNCTION_ANALYSIS("reaching-def",
+// ReachingDefAnalysisAnalysis()) MACHINE_FUNCTION_ANALYSIS("gc-analysis",
 // GCMachineCodeAnalysisPass())
 #undef MACHINE_FUNCTION_ANALYSIS
 
diff --git a/llvm/lib/CodeGen/LiveRegMatrix.cpp b/llvm/lib/CodeGen/LiveRegMatrix.cpp
index a0e8b0e4f9cc1..a57233cf37da0 100644
--- a/llvm/lib/CodeGen/LiveRegMatrix.cpp
+++ b/llvm/lib/CodeGen/LiveRegMatrix.cpp
@@ -35,27 +35,33 @@ using namespace llvm;
 STATISTIC(NumAssigned   , "Number of registers assigned");
 STATISTIC(NumUnassigned , "Number of registers unassigned");
 
-char LiveRegMatrix::ID = 0;
-INITIALIZE_PASS_BEGIN(LiveRegMatrix, "liveregmatrix",
+char LiveRegMatrixWrapperLegacy::ID = 0;
+INITIALIZE_PASS_BEGIN(LiveRegMatrixWrapperLegacy, "liveregmatrix",
                       "Live Register Matrix", false, false)
 INITIALIZE_PASS_DEPENDENCY(LiveIntervalsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(VirtRegMapWrapperLegacy)
-INITIALIZE_PASS_END(LiveRegMatrix, "liveregmatrix",
+INITIALIZE_PASS_END(LiveRegMatrixWrapperLegacy, "liveregmatrix",
                     "Live Register Matrix", false, false)
 
-LiveRegMatrix::LiveRegMatrix() : MachineFunctionPass(ID) {}
-
-void LiveRegMatrix::getAnalysisUsage(AnalysisUsage &AU) const {
+void LiveRegMatrixWrapperLegacy::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
   AU.addRequiredTransitive<LiveIntervalsWrapperPass>();
   AU.addRequiredTransitive<VirtRegMapWrapperLegacy>();
   MachineFunctionPass::getAnalysisUsage(AU);
 }
 
-bool LiveRegMatrix::runOnMachineFunction(MachineFunction &MF) {
+bool LiveRegMatrixWrapperLegacy::runOnMachineFunction(MachineFunction &MF) {
+  auto &LIS = getAnalysis<LiveIntervalsWrapperPass>().getLIS();
+  auto &VRM = getAnalysis<VirtRegMapWrapperLegacy>().getVRM();
+  LRM.init(MF, LIS, VRM);
+  return false;
+}
+
+void LiveRegMatrix::init(MachineFunction &MF, LiveIntervals &pLIS,
+                         VirtRegMap &pVRM) {
   TRI = MF.getSubtarget().getRegisterInfo();
-  LIS = &getAnalysis<LiveIntervalsWrapperPass>().getLIS();
-  VRM = &getAnalysis<VirtRegMapWrapperLegacy>().getVRM();
+  LIS = &pLIS;
+  VRM = &pVRM;
 
   unsigned NumRegUnits = TRI->getNumRegUnits();
   if (NumRegUnits != Matrix.size())
@@ -64,9 +70,10 @@ bool LiveRegMatrix::runOnMachineFunction(MachineFunction &MF) {
 
   // Make sure no stale queries get reused.
   invalidateVirtRegs();
-  return false;
 }
 
+void LiveRegMatrixWrapperLegacy::releaseMemory() { LRM.releaseMemory(); }
+
 void LiveRegMatrix::releaseMemory() {
   for (unsigned i = 0, e = Matrix.size(); i != e; ++i) {
     Matrix[i].clear();
@@ -246,3 +253,14 @@ Register LiveRegMatrix::getOneVReg(unsigned PhysReg) const {
 
   return MCRegister::NoRegister;
 }
+
+AnalysisKey LiveRegMatrixAnalysis::Key;
+
+LiveRegMatrix LiveRegMatrixAnalysis::run(MachineFunction &MF,
+                                         MachineFunctionAnalysisManager &MFAM) {
+  auto &LIS = MFAM.getResult<LiveIntervalsAnalysis>(MF);
+  auto &VRM = MFAM.getResult<VirtRegMapAnalysis>(MF);
+  LiveRegMatrix LRM;
+  LRM.init(MF, LIS, VRM);
+  return LRM;
+}
diff --git a/llvm/lib/CodeGen/RegAllocBasic.cpp b/llvm/lib/CodeGen/RegAllocBasic.cpp
index 07d7e212adfce..55d806e768b91 100644
--- a/llvm/lib/CodeGen/RegAllocBasic.cpp
+++ b/llvm/lib/CodeGen/RegAllocBasic.cpp
@@ -140,7 +140,7 @@ INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(VirtRegMapWrapperLegacy)
-INITIALIZE_PASS_DEPENDENCY(LiveRegMatrix)
+INITIALIZE_PASS_DEPENDENCY(LiveRegMatrixWrapperLegacy)
 INITIALIZE_PASS_DEPENDENCY(ProfileSummaryInfoWrapperPass)
 INITIALIZE_PASS_END(RABasic, "regallocbasic", "Basic Register Allocator", false,
                     false)
@@ -193,8 +193,8 @@ void RABasic::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<MachineLoopInfoWrapperPass>();
   AU.addRequired<VirtRegMapWrapperLegacy>();
   AU.addPreserved<VirtRegMapWrapperLegacy>();
-  AU.addRequired<LiveRegMatrix>();
-  AU.addPreserved<LiveRegMatrix>();
+  AU.addRequired<LiveRegMatrixWrapperLegacy>();
+  AU.addPreserved<LiveRegMatrixWrapperLegacy>();
   MachineFunctionPass::getAnalysisUsage(AU);
 }
 
@@ -312,7 +312,7 @@ bool RABasic::runOnMachineFunction(MachineFunction &mf) {
   MF = &mf;
   RegAllocBase::init(getAnalysis<VirtRegMapWrapperLegacy>().getVRM(),
                      getAnalysis<LiveIntervalsWrapperPass>().getLIS(),
-                     getAnalysis<LiveRegMatrix>());
+                     getAnalysis<LiveRegMatrixWrapperLegacy>().getLRM());
   VirtRegAuxInfo VRAI(
       *MF, *LIS, *VRM, getAnalysis<MachineLoopInfoWrapperPass>().getLI(),
       getAnalysis<MachineBlockFrequencyInfoWrapperPass>().getMBFI(),
diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index 2c9bb0aa14557..9cb596be96f99 100644
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -163,7 +163,7 @@ INITIALIZE_PASS_DEPENDENCY(LiveStacks)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(VirtRegMapWrapperLegacy)
-INITIALIZE_PASS_DEPENDENCY(LiveRegMatrix)
+INITIALIZE_PASS_DEPENDENCY(LiveRegMatrixWrapperLegacy)
 INITIALIZE_PASS_DEPENDENCY(EdgeBundles)
 INITIALIZE_PASS_DEPENDENCY(SpillPlacement)
 INITIALIZE_PASS_DEPENDENCY(MachineOptimizationRemarkEmitterPass)
@@ -217,8 +217,8 @@ void RAGreedy::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<MachineLoopInfoWrapperPass>();
   AU.addRequired<VirtRegMapWrapperLegacy>();
   AU.addPreserved<VirtRegMapWrapperLegacy>();
-  AU.addRequired<LiveRegMatrix>();
-  AU.addPreserved<LiveRegMatrix>();
+  AU.addRequired<LiveRegMatrixWrapperLegacy>();
+  AU.addPreserved<LiveRegMatrixWrapperLegacy>();
   AU.addRequired<EdgeBundles>();
   AU.addRequired<SpillPlacement>();
   AU.addRequired<MachineOptimizationRemarkEmitterPass>();
@@ -2718,7 +2718,7 @@ bool RAGreedy::runOnMachineFunction(MachineFunction &mf) {
 
   RegAllocBase::init(getAnalysis<VirtRegMapWrapperLegacy>().getVRM(),
                      getAnalysis<LiveIntervalsWrapperPass>().getLIS(),
-                     getAnalysis<LiveRegMatrix>());
+                     getAnalysis<LiveRegMatrixWrapperLegacy>().getLRM());
 
   // Early return if there is no virtual register to be allocated to a
   // physical register.
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
index c2aef42780321..67ebc3015a46d 100644
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -96,6 +96,7 @@
 #include "llvm/CodeGen/InterleavedLoadCombine.h"
 #include "llvm/CodeGen/JMCInstrumenter.h"
 #include "llvm/CodeGen/LiveIntervals.h"
+#include "llvm/CodeGen/LiveRegMatrix.h"
 #include "llvm/CodeGen/LiveVariables.h"
 #include "llvm/CodeGen/LocalStackSlotAllocation.h"
 #include "llvm/CodeGen/LowerEmuTLS.h"
diff --git a/llvm/lib/Target/AMDGPU/GCNNSAReassign.cpp b/llvm/lib/Target/AMDGPU/GCNNSAReassign.cpp
index 40af37141fe61..85e79aa4b7595 100644
--- a/llvm/lib/Target/AMDGPU/GCNNSAReassign.cpp
+++ b/llvm/lib/Target/AMDGPU/GCNNSAReassign.cpp
@@ -50,7 +50,7 @@ class GCNNSAReassign : public MachineFunctionPass {
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<LiveIntervalsWrapperPass>();
     AU.addRequired<VirtRegMapWrapperLegacy>();
-    AU.addRequired<LiveRegMatrix>();
+    AU.addRequired<LiveRegMatrixWrapperLegacy>();
     AU.setPreservesAll();
     MachineFunctionPass::getAnalysisUsage(AU);
   }
@@ -96,7 +96,7 @@ INITIALIZE_PASS_BEGIN(GCNNSAReassign, DEBUG_TYPE, "GCN NSA Reassign",
                       false, false)
 INITIALIZE_PASS_DEPENDENCY(LiveIntervalsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(VirtRegMapWrapperLegacy)
-INITIALIZE_PASS_DEPENDENCY(LiveRegMatrix)
+INITIALIZE_PASS_DEPENDENCY(LiveRegMatrixWrapperLegacy)
 INITIALIZE_PASS_END(GCNNSAReassign, DEBUG_TYPE, "GCN NSA Reassign",
                     false, false)
 
@@ -243,7 +243,7 @@ bool GCNNSAReassign::runOnMachineFunction(MachineFunction &MF) {
   MRI = &MF.getRegInfo();
   TRI = ST->getRegisterInfo();
   VRM = &getAnalysis<VirtRegMapWrapperLegacy>().getVRM();
-  LRM = &getAnalysis<LiveRegMatrix>();
+  LRM = &getAnalysis<LiveRegMatrixWrapperLegacy>().getLRM();
   LIS = &getAnalysis<LiveIntervalsWrapperPass>().getLIS();
 
   const SIMachineFunctionInfo *MFI = MF.getInfo<SIMachineFunctionInfo>();
diff --git a/llvm/lib/Target/AMDGPU/SIPreAllocateWWMRegs.cpp b/llvm/lib/Target/AMDGPU/SIPreAllocateWWMRegs.cpp
index 211f3f11006ff..fbb04f404b488 100644
--- a/llvm/lib/Target/AMDGPU/SIPreAllocateWWMRegs.cpp
+++ b/llvm/lib/Target/AMDGPU/SIPreAllocateWWMRegs.cpp
@@ -61,7 +61,7 @@ class SIPreAllocateWWMRegs : public MachineFunctionPass {
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<LiveIntervalsWrapperPass>();
     AU.addRequired<VirtRegMapWrapperLegacy>();
-    AU.addRequired<LiveRegMatrix>();
+    AU.addRequired<LiveRegMatrixWrapperLegacy>();
     AU.setPreservesAll();
     MachineFunctionPass::getAnalysisUsage(AU);
   }
@@ -77,7 +77,7 @@ INITIALIZE_PASS_BEGIN(SIPreAllocateWWMRegs, DEBUG_TYPE,
                 "SI Pre-allocate WWM Registers", false, false)
 INITIALIZE_PASS_DEPENDENCY(LiveIntervalsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(VirtRegMapWrapperLegacy)
-INITIALIZE_PASS_DEPENDENCY(LiveRegMatrix)
+INITIALIZE_PASS_DEPENDENCY(LiveRegMatrixWrapperLegacy)
 INITIALIZE_PASS_END(SIPreAllocateWWMRegs, DEBUG_TYPE,
                 "SI Pre-allocate WWM Registers", false, false)
 
@@ -194,7 +194,7 @@ bool SIPreAllocateWWMRegs::runOnMachineFunction(MachineFunction &MF) {
   MRI = &MF.getRegInfo();
 
   LIS = &getAnalysis<LiveIntervalsWrapperPass>().getLIS();
-  Matrix = &getAnalysis<LiveRegMatrix>();
+  Matrix = &getAnalysis<LiveRegMatrixWrapperLegacy>().getLRM();
   VRM = &getAnalysis<VirtRegMapWrapperLegacy>().getVRM();
 
   RegClassInfo.runOnMachineFunction(MF);