diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
@@ -1525,13 +1525,14 @@
   }
 
   Lo = DAG.getLoad(ISD::UNINDEXED, ExtType, LoVT, dl, Ch, Ptr, Offset,
-                   LD->getPointerInfo(), LoMemVT, Alignment, MMOFlags, AAInfo);
+                   LD->getPointerInfo(), LoMemVT, Alignment.value(), MMOFlags,
+                   AAInfo);
 
   unsigned IncrementSize = LoMemVT.getSizeInBits()/8;
   Ptr = DAG.getObjectPtrOffset(dl, Ptr, IncrementSize);
   Hi = DAG.getLoad(ISD::UNINDEXED, ExtType, HiVT, dl, Ch, Ptr, Offset,
                    LD->getPointerInfo().getWithOffset(IncrementSize), HiMemVT,
-                   Alignment, MMOFlags, AAInfo);
+                   Alignment.value(), MMOFlags, AAInfo);
 
   // Build a factor node to remember that this load is independent of the
   // other one.
@@ -1650,7 +1651,7 @@
 
   MachineMemOperand *MMO = DAG.getMachineFunction().getMachineMemOperand(
       MGT->getPointerInfo(), MachineMemOperand::MOLoad,
-      MemoryLocation::UnknownSize, Alignment, MGT->getAAInfo(),
+      MemoryLocation::UnknownSize, Alignment.value(), MGT->getAAInfo(),
       MGT->getRanges());
 
   SDValue OpsLo[] = {Ch, PassThruLo, MaskLo, Ptr, IndexLo, Scale};
@@ -2409,7 +2410,8 @@
   SDValue Lo;
   MachineMemOperand *MMO = DAG.getMachineFunction().getMachineMemOperand(
       N->getPointerInfo(), MachineMemOperand::MOStore,
-      MemoryLocation::UnknownSize, Alignment, N->getAAInfo(), N->getRanges());
+      MemoryLocation::UnknownSize, Alignment.value(), N->getAAInfo(),
+      N->getRanges());
 
   SDValue OpsLo[] = {Ch, DataLo, MaskLo, Ptr, IndexLo, Scale};
   Lo = DAG.getMaskedScatter(DAG.getVTList(MVT::Other), DataLo.getValueType(),
@@ -2449,10 +2451,10 @@
 
   if (isTruncating)
     Lo = DAG.getTruncStore(Ch, DL, Lo, Ptr, N->getPointerInfo(), LoMemVT,
-                           Alignment, MMOFlags, AAInfo);
+                           Alignment.value(), MMOFlags, AAInfo);
   else
-    Lo = DAG.getStore(Ch, DL, Lo, Ptr, N->getPointerInfo(), Alignment, MMOFlags,
-                      AAInfo);
+    Lo = DAG.getStore(Ch, DL, Lo, Ptr, N->getPointerInfo(), Alignment.value(),
+                      MMOFlags, AAInfo);
 
   // Increment the pointer to the other half.
   Ptr = DAG.getObjectPtrOffset(DL, Ptr, IncrementSize);
@@ -2460,11 +2462,11 @@
   if (isTruncating)
     Hi = DAG.getTruncStore(Ch, DL, Hi, Ptr,
                            N->getPointerInfo().getWithOffset(IncrementSize),
-                           HiMemVT, Alignment, MMOFlags, AAInfo);
+                           HiMemVT, Alignment.value(), MMOFlags, AAInfo);
   else
     Hi = DAG.getStore(Ch, DL, Hi, Ptr,
                       N->getPointerInfo().getWithOffset(IncrementSize),
-                      Alignment, MMOFlags, AAInfo);
+                      Alignment.value(), MMOFlags, AAInfo);
 
   return DAG.getNode(ISD::TokenFactor, DL, MVT::Other, Lo, Hi);
 }
diff --git a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
--- a/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
@@ -1464,12 +1464,10 @@
   // TODO: can we be smarter about machine pointer info?
   MachinePointerInfo PtrInfo(AMDGPUAS::CONSTANT_ADDRESS);
   MachineMemOperand *MMO = MF.getMachineMemOperand(
-    PtrInfo,
-    MachineMemOperand::MOLoad |
-    MachineMemOperand::MODereferenceable |
-    MachineMemOperand::MOInvariant,
-    4,
-    MinAlign(64, StructOffset));
+      PtrInfo,
+      MachineMemOperand::MOLoad | MachineMemOperand::MODereferenceable |
+          MachineMemOperand::MOInvariant,
+      4, commonAlignment(Align(64), StructOffset));
 
   Register LoadAddr;
 
@@ -2028,10 +2026,10 @@
   Register GOTAddr = MRI.createGenericVirtualRegister(PtrTy);
 
   MachineMemOperand *GOTMMO = MF.getMachineMemOperand(
-    MachinePointerInfo::getGOT(MF),
-    MachineMemOperand::MOLoad | MachineMemOperand::MODereferenceable |
-    MachineMemOperand::MOInvariant,
-    8 /*Size*/, 8 /*Align*/);
+      MachinePointerInfo::getGOT(MF),
+      MachineMemOperand::MOLoad | MachineMemOperand::MODereferenceable |
+          MachineMemOperand::MOInvariant,
+      8 /*Size*/, Align(8));
 
   buildPCRelGlobalAddress(GOTAddr, PtrTy, B, GV, 0, SIInstrInfo::MO_GOTPCREL32);
 
@@ -4003,11 +4001,12 @@
   // FIXME: When intrinsic definition is fixed, this should have an MMO already.
   // TODO: Should this use datalayout alignment?
   const unsigned MemSize = (Size + 7) / 8;
-  const unsigned MemAlign = 4;
+  const Align MemAlign(4);
   MachineMemOperand *MMO = MF.getMachineMemOperand(
-    MachinePointerInfo(),
-    MachineMemOperand::MOLoad | MachineMemOperand::MODereferenceable |
-    MachineMemOperand::MOInvariant, MemSize, MemAlign);
+      MachinePointerInfo(),
+      MachineMemOperand::MOLoad | MachineMemOperand::MODereferenceable |
+          MachineMemOperand::MOInvariant,
+      MemSize, MemAlign);
   MI.addMemOperand(MF, MMO);
 
   // There are no 96-bit result scalar loads, but widening to 128-bit should
diff --git a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
--- a/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
@@ -1352,7 +1352,7 @@
 
   // Use the alignment to ensure that the required offsets will fit into the
   // immediate offsets.
-  const unsigned Align = NumLoads > 1 ? 16 * NumLoads : 1;
+  const unsigned Alignment = NumLoads > 1 ? 16 * NumLoads : 1;
 
   MachineIRBuilder B(MI);
   MachineFunction &MF = B.getMF();
@@ -1362,12 +1362,12 @@
   int64_t ImmOffset = 0;
 
   unsigned MMOOffset = setBufferOffsets(B, *this, MI.getOperand(2).getReg(),
-                                        VOffset, SOffset, ImmOffset, Align);
+                                        VOffset, SOffset, ImmOffset, Alignment);
 
   // TODO: 96-bit loads were widened to 128-bit results. Shrink the result if we
   // can, but we neeed to track an MMO for that.
   const unsigned MemSize = (Ty.getSizeInBits() + 7) / 8;
-  const unsigned MemAlign = 4; // FIXME: ABI type alignment?
+  const Align MemAlign(4); // FIXME: ABI type alignment?
   MachineMemOperand *BaseMMO = MF.getMachineMemOperand(
     MachinePointerInfo(),
     MachineMemOperand::MOLoad | MachineMemOperand::MODereferenceable |
diff --git a/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp b/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
--- a/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
@@ -94,7 +94,7 @@
 
   MachineMemOperand *MMO = MF->getMachineMemOperand(
       MachinePointerInfo::getFixedStack(*MF, FI), MachineMemOperand::MOStore, 4,
-      MFI.getObjectAlignment(FI));
+      MFI.getObjectAlign(FI));
 
   if (isUInt<12>(Offset)) {
     BuildMI(MBB, I, DebugLoc(), TII->get(AMDGPU::BUFFER_STORE_DWORD_OFFSET))
@@ -141,7 +141,7 @@
 
   MachineMemOperand *MMO = MF->getMachineMemOperand(
       MachinePointerInfo::getFixedStack(*MF, FI), MachineMemOperand::MOLoad, 4,
-      MFI.getObjectAlignment(FI));
+      MFI.getObjectAlign(FI));
 
   if (isUInt<12>(Offset)) {
     BuildMI(MBB, I, DebugLoc(),
@@ -462,9 +462,9 @@
     const MCInstrDesc &LoadDwordX4 = TII->get(AMDGPU::S_LOAD_DWORDX4_IMM);
     auto MMO = MF.getMachineMemOperand(PtrInfo,
                                        MachineMemOperand::MOLoad |
-                                       MachineMemOperand::MOInvariant |
-                                       MachineMemOperand::MODereferenceable,
-                                       16, 4);
+                                           MachineMemOperand::MOInvariant |
+                                           MachineMemOperand::MODereferenceable,
+                                       16, Align(4));
     unsigned Offset = Fn.getCallingConv() == CallingConv::AMDGPU_CS ? 16 : 0;
     const GCNSubtarget &Subtarget = MF.getSubtarget<GCNSubtarget>();
     unsigned EncodedOffset = AMDGPU::convertSMRDOffsetUnits(Subtarget, Offset);
@@ -499,11 +499,11 @@
         const MCInstrDesc &LoadDwordX2 = TII->get(AMDGPU::S_LOAD_DWORDX2_IMM);
 
         MachinePointerInfo PtrInfo(AMDGPUAS::CONSTANT_ADDRESS);
-        auto MMO = MF.getMachineMemOperand(PtrInfo,
-                                           MachineMemOperand::MOLoad |
-                                           MachineMemOperand::MOInvariant |
-                                           MachineMemOperand::MODereferenceable,
-                                           8, 4);
+        auto MMO = MF.getMachineMemOperand(
+            PtrInfo,
+            MachineMemOperand::MOLoad | MachineMemOperand::MOInvariant |
+                MachineMemOperand::MODereferenceable,
+            8, Align(4));
         BuildMI(MBB, I, DL, LoadDwordX2, Rsrc01)
           .addReg(MFI->getImplicitBufferPtrUserSGPR())
           .addImm(0) // offset
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -5668,14 +5668,14 @@
   MachineFunction &MF = DAG.getMachineFunction();
 
   const DataLayout &DataLayout = DAG.getDataLayout();
-  unsigned Align =
-      DataLayout.getABITypeAlignment(VT.getTypeForEVT(*DAG.getContext()));
+  Align Alignment =
+      DataLayout.getABITypeAlign(VT.getTypeForEVT(*DAG.getContext()));
 
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo(),
       MachineMemOperand::MOLoad | MachineMemOperand::MODereferenceable |
           MachineMemOperand::MOInvariant,
-      VT.getStoreSize(), Align);
+      VT.getStoreSize(), Alignment);
 
   if (!Offset->isDivergent()) {
     SDValue Ops[] = {
diff --git a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
--- a/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
@@ -1132,13 +1132,11 @@
   MachineFrameInfo &FrameInfo = MF->getFrameInfo();
   const DebugLoc &DL = MBB.findDebugLoc(MI);
 
-  unsigned Size = FrameInfo.getObjectSize(FrameIndex);
-  unsigned Align = FrameInfo.getObjectAlignment(FrameIndex);
   MachinePointerInfo PtrInfo
     = MachinePointerInfo::getFixedStack(*MF, FrameIndex);
-  MachineMemOperand *MMO
-    = MF->getMachineMemOperand(PtrInfo, MachineMemOperand::MOStore,
-                               Size, Align);
+  MachineMemOperand *MMO = MF->getMachineMemOperand(
+      PtrInfo, MachineMemOperand::MOStore, FrameInfo.getObjectSize(FrameIndex),
+      FrameInfo.getObjectAlign(FrameIndex));
   unsigned SpillSize = TRI->getSpillSize(*RC);
 
   if (RI.isSGPRClass(RC)) {
@@ -1260,15 +1258,14 @@
   SIMachineFunctionInfo *MFI = MF->getInfo<SIMachineFunctionInfo>();
   MachineFrameInfo &FrameInfo = MF->getFrameInfo();
   const DebugLoc &DL = MBB.findDebugLoc(MI);
-  unsigned Align = FrameInfo.getObjectAlignment(FrameIndex);
-  unsigned Size = FrameInfo.getObjectSize(FrameIndex);
   unsigned SpillSize = TRI->getSpillSize(*RC);
 
   MachinePointerInfo PtrInfo
     = MachinePointerInfo::getFixedStack(*MF, FrameIndex);
 
   MachineMemOperand *MMO = MF->getMachineMemOperand(
-    PtrInfo, MachineMemOperand::MOLoad, Size, Align);
+      PtrInfo, MachineMemOperand::MOLoad, FrameInfo.getObjectSize(FrameIndex),
+      FrameInfo.getObjectAlign(FrameIndex));
 
   if (RI.isSGPRClass(RC)) {
     MFI->setHasSpilledSGPRs();
diff --git a/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp b/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
--- a/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/SIRegisterInfo.cpp
@@ -673,7 +673,7 @@
   int64_t Offset = InstOffset + MFI.getObjectOffset(Index);
   int64_t ScratchOffsetRegDelta = 0;
 
-  unsigned Align = MFI.getObjectAlignment(Index);
+  Align Alignment = MFI.getObjectAlign(Index);
   const MachinePointerInfo &BasePtrInfo = MMO->getPointerInfo();
 
   Register TmpReg =
@@ -749,9 +749,9 @@
       }
 
       MachinePointerInfo PInfo = BasePtrInfo.getWithOffset(EltSize * i);
-      MachineMemOperand *NewMMO
-        = MF->getMachineMemOperand(PInfo, MMO->getFlags(),
-                                   EltSize, MinAlign(Align, EltSize * i));
+      MachineMemOperand *NewMMO =
+          MF->getMachineMemOperand(PInfo, MMO->getFlags(), EltSize,
+                                   commonAlignment(Alignment, EltSize * i));
 
       MIB = BuildMI(*MBB, MI, DL, Desc)
                 .addReg(SubReg,
@@ -877,12 +877,12 @@
         Mov.addReg(SuperReg, RegState::Implicit | SuperKillState);
       }
 
-      unsigned Align = FrameInfo.getObjectAlignment(Index);
+      Align Alignment = FrameInfo.getObjectAlign(Index);
       MachinePointerInfo PtrInfo
         = MachinePointerInfo::getFixedStack(*MF, Index, EltSize * i);
-      MachineMemOperand *MMO
-        = MF->getMachineMemOperand(PtrInfo, MachineMemOperand::MOStore,
-                                   EltSize, MinAlign(Align, EltSize * i));
+      MachineMemOperand *MMO =
+          MF->getMachineMemOperand(PtrInfo, MachineMemOperand::MOStore, EltSize,
+                                   commonAlignment(Alignment, EltSize * i));
       BuildMI(*MBB, MI, DL, TII->get(AMDGPU::SI_SPILL_V32_SAVE))
         .addReg(TmpVGPR, RegState::Kill)      // src
         .addFrameIndex(Index)                 // vaddr
@@ -951,14 +951,14 @@
       // FIXME: We should use S_LOAD_DWORD here for VI.
       if (!TmpVGPR.isValid())
         TmpVGPR = RS->scavengeRegister(&AMDGPU::VGPR_32RegClass, MI, 0);
-      unsigned Align = FrameInfo.getObjectAlignment(Index);
+      Align Alignment = FrameInfo.getObjectAlign(Index);
 
       MachinePointerInfo PtrInfo
         = MachinePointerInfo::getFixedStack(*MF, Index, EltSize * i);
 
-      MachineMemOperand *MMO = MF->getMachineMemOperand(PtrInfo,
-        MachineMemOperand::MOLoad, EltSize,
-        MinAlign(Align, EltSize * i));
+      MachineMemOperand *MMO =
+          MF->getMachineMemOperand(PtrInfo, MachineMemOperand::MOLoad, EltSize,
+                                   commonAlignment(Alignment, EltSize * i));
 
       BuildMI(*MBB, MI, DL, TII->get(AMDGPU::SI_SPILL_V32_RESTORE), TmpVGPR)
         .addFrameIndex(Index)                 // vaddr
diff --git a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
--- a/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
+++ b/llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
@@ -1076,11 +1076,11 @@
                     const TargetRegisterInfo *TRI) const {
   MachineFunction &MF = *MBB.getParent();
   MachineFrameInfo &MFI = MF.getFrameInfo();
-  unsigned Align = MFI.getObjectAlignment(FI);
+  Align Alignment = MFI.getObjectAlign(FI);
 
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FI), MachineMemOperand::MOStore,
-      MFI.getObjectSize(FI), Align);
+      MFI.getObjectSize(FI), Alignment);
 
   switch (TRI->getSpillSize(*RC)) {
     case 2:
@@ -1150,7 +1150,7 @@
     case 16:
       if (ARM::DPairRegClass.hasSubClassEq(RC) && Subtarget.hasNEON()) {
         // Use aligned spills if the stack can be realigned.
-        if (Align >= 16 && getRegisterInfo().canRealignStack(MF)) {
+        if (Alignment >= 16 && getRegisterInfo().canRealignStack(MF)) {
           BuildMI(MBB, I, DebugLoc(), get(ARM::VST1q64))
               .addFrameIndex(FI)
               .addImm(16)
@@ -1178,7 +1178,7 @@
     case 24:
       if (ARM::DTripleRegClass.hasSubClassEq(RC)) {
         // Use aligned spills if the stack can be realigned.
-        if (Align >= 16 && getRegisterInfo().canRealignStack(MF) &&
+        if (Alignment >= 16 && getRegisterInfo().canRealignStack(MF) &&
             Subtarget.hasNEON()) {
           BuildMI(MBB, I, DebugLoc(), get(ARM::VST1d64TPseudo))
               .addFrameIndex(FI)
@@ -1201,7 +1201,7 @@
       break;
     case 32:
       if (ARM::QQPRRegClass.hasSubClassEq(RC) || ARM::DQuadRegClass.hasSubClassEq(RC)) {
-        if (Align >= 16 && getRegisterInfo().canRealignStack(MF) &&
+        if (Alignment >= 16 && getRegisterInfo().canRealignStack(MF) &&
             Subtarget.hasNEON()) {
           // FIXME: It's possible to only store part of the QQ register if the
           // spilled def has a sub-register index.
diff --git a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
--- a/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
+++ b/llvm/lib/Target/ARM/ARMISelDAGToDAG.cpp
@@ -3400,7 +3400,7 @@
       MachineFunction& MF = CurDAG->getMachineFunction();
       MachineMemOperand *MemOp =
           MF.getMachineMemOperand(MachinePointerInfo::getConstantPool(MF),
-                                  MachineMemOperand::MOLoad, 4, 4);
+                                  MachineMemOperand::MOLoad, 4, Align(4));
 
       CurDAG->setNodeMemRefs(cast<MachineSDNode>(ResNode), {MemOp});
 
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -9578,11 +9578,11 @@
   // Grab constant pool and fixed stack memory operands.
   MachineMemOperand *CPMMO =
       MF->getMachineMemOperand(MachinePointerInfo::getConstantPool(*MF),
-                               MachineMemOperand::MOLoad, 4, 4);
+                               MachineMemOperand::MOLoad, 4, Align(4));
 
   MachineMemOperand *FIMMOSt =
       MF->getMachineMemOperand(MachinePointerInfo::getFixedStack(*MF, FI),
-                               MachineMemOperand::MOStore, 4, 4);
+                               MachineMemOperand::MOStore, 4, Align(4));
 
   // Load the address of the dispatch MBB into the jump buffer.
   if (isThumb2) {
@@ -10233,7 +10233,7 @@
   Register dest = MI.getOperand(0).getReg();
   Register src = MI.getOperand(1).getReg();
   unsigned SizeVal = MI.getOperand(2).getImm();
-  unsigned Align = MI.getOperand(3).getImm();
+  unsigned Alignment = MI.getOperand(3).getImm();
   DebugLoc dl = MI.getDebugLoc();
 
   MachineFunction *MF = BB->getParent();
@@ -10246,17 +10246,17 @@
   bool IsThumb2 = Subtarget->isThumb2();
   bool IsThumb = Subtarget->isThumb();
 
-  if (Align & 1) {
+  if (Alignment & 1) {
     UnitSize = 1;
-  } else if (Align & 2) {
+  } else if (Alignment & 2) {
     UnitSize = 2;
   } else {
     // Check whether we can use NEON instructions.
     if (!MF->getFunction().hasFnAttribute(Attribute::NoImplicitFloat) &&
         Subtarget->hasNEON()) {
-      if ((Align % 16 == 0) && SizeVal >= 16)
+      if ((Alignment % 16 == 0) && SizeVal >= 16)
         UnitSize = 16;
-      else if ((Align % 8 == 0) && SizeVal >= 8)
+      else if ((Alignment % 8 == 0) && SizeVal >= 8)
         UnitSize = 8;
     }
     // Can't use NEON instructions.
@@ -10362,13 +10362,11 @@
     const Constant *C = ConstantInt::get(Int32Ty, LoopSize);
 
     // MachineConstantPool wants an explicit alignment.
-    unsigned Align = MF->getDataLayout().getPrefTypeAlignment(Int32Ty);
-    if (Align == 0)
-      Align = MF->getDataLayout().getTypeAllocSize(C->getType());
-    unsigned Idx = ConstantPool->getConstantPoolIndex(C, Align);
+    Align Alignment = MF->getDataLayout().getPrefTypeAlign(Int32Ty);
+    unsigned Idx = ConstantPool->getConstantPoolIndex(C, Alignment.value());
     MachineMemOperand *CPMMO =
         MF->getMachineMemOperand(MachinePointerInfo::getConstantPool(*MF),
-                                 MachineMemOperand::MOLoad, 4, 4);
+                                 MachineMemOperand::MOLoad, 4, Align(4));
 
     if (IsThumb)
       BuildMI(*BB, MI, dl, TII->get(ARM::tLDRpci))
diff --git a/llvm/lib/Target/AVR/AVRInstrInfo.cpp b/llvm/lib/Target/AVR/AVRInstrInfo.cpp
--- a/llvm/lib/Target/AVR/AVRInstrInfo.cpp
+++ b/llvm/lib/Target/AVR/AVRInstrInfo.cpp
@@ -138,7 +138,7 @@
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FrameIndex),
       MachineMemOperand::MOStore, MFI.getObjectSize(FrameIndex),
-      MFI.getObjectAlignment(FrameIndex));
+      MFI.getObjectAlign(FrameIndex));
 
   unsigned Opcode = 0;
   if (TRI->isTypeLegalForClass(*RC, MVT::i8)) {
@@ -172,7 +172,7 @@
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FrameIndex),
       MachineMemOperand::MOLoad, MFI.getObjectSize(FrameIndex),
-      MFI.getObjectAlignment(FrameIndex));
+      MFI.getObjectAlign(FrameIndex));
 
   unsigned Opcode = 0;
   if (TRI->isTypeLegalForClass(*RC, MVT::i8)) {
diff --git a/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp b/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
--- a/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonFrameLowering.cpp
@@ -893,7 +893,7 @@
   // Create a dummy memory operand to avoid allocframe from being treated as
   // a volatile memory reference.
   auto *MMO = MF.getMachineMemOperand(MachinePointerInfo::getStack(MF, 0),
-                                      MachineMemOperand::MOStore, 4, 4);
+                                      MachineMemOperand::MOStore, 4, Align(4));
 
   DebugLoc dl = MBB.findDebugLoc(InsertPt);
   unsigned SP = HRI.getStackRegister();
@@ -1547,12 +1547,11 @@
           if (auto *FS = dyn_cast_or_null<FixedStackPseudoSourceValue>(PV)) {
             int FI = FS->getFrameIndex();
             if (DealignSlots.count(FI)) {
-              unsigned A = MFI.getObjectAlignment(FI);
-              auto *NewMMO = MF.getMachineMemOperand(MMO->getPointerInfo(),
-                                MMO->getFlags(), MMO->getSize(), A,
-                                MMO->getAAInfo(), MMO->getRanges(),
-                                MMO->getSyncScopeID(), MMO->getOrdering(),
-                                MMO->getFailureOrdering());
+              auto *NewMMO = MF.getMachineMemOperand(
+                  MMO->getPointerInfo(), MMO->getFlags(), MMO->getSize(),
+                  MFI.getObjectAlign(FI), MMO->getAAInfo(), MMO->getRanges(),
+                  MMO->getSyncScopeID(), MMO->getOrdering(),
+                  MMO->getFailureOrdering());
               new_memops.push_back(NewMMO);
               KeepOld = false;
               continue;
diff --git a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
--- a/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
@@ -2909,10 +2909,10 @@
   MachineMemOperand *WideMMO = nullptr;
   if (MachineMemOperand *MMO = LN->getMemOperand()) {
     MachineFunction &MF = DAG.getMachineFunction();
-    WideMMO = MF.getMachineMemOperand(MMO->getPointerInfo(), MMO->getFlags(),
-                    2*LoadLen, LoadLen, MMO->getAAInfo(), MMO->getRanges(),
-                    MMO->getSyncScopeID(), MMO->getOrdering(),
-                    MMO->getFailureOrdering());
+    WideMMO = MF.getMachineMemOperand(
+        MMO->getPointerInfo(), MMO->getFlags(), 2 * LoadLen, Align(LoadLen),
+        MMO->getAAInfo(), MMO->getRanges(), MMO->getSyncScopeID(),
+        MMO->getOrdering(), MMO->getFailureOrdering());
   }
 
   SDValue Load0 = DAG.getLoad(LoadTy, dl, Chain, Base0, WideMMO);
diff --git a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
--- a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
@@ -916,12 +916,11 @@
   DebugLoc DL = MBB.findDebugLoc(I);
   MachineFunction &MF = *MBB.getParent();
   MachineFrameInfo &MFI = MF.getFrameInfo();
-  unsigned SlotAlign = MFI.getObjectAlignment(FI);
   unsigned KillFlag = getKillRegState(isKill);
 
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FI), MachineMemOperand::MOStore,
-      MFI.getObjectSize(FI), SlotAlign);
+      MFI.getObjectSize(FI), MFI.getObjectAlign(FI));
 
   if (Hexagon::IntRegsRegClass.hasSubClassEq(RC)) {
     BuildMI(MBB, I, DL, get(Hexagon::S2_storeri_io))
@@ -963,11 +962,10 @@
   DebugLoc DL = MBB.findDebugLoc(I);
   MachineFunction &MF = *MBB.getParent();
   MachineFrameInfo &MFI = MF.getFrameInfo();
-  unsigned SlotAlign = MFI.getObjectAlignment(FI);
 
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FI), MachineMemOperand::MOLoad,
-      MFI.getObjectSize(FI), SlotAlign);
+      MFI.getObjectSize(FI), MFI.getObjectAlign(FI));
 
   if (Hexagon::IntRegsRegClass.hasSubClassEq(RC)) {
     BuildMI(MBB, I, DL, get(Hexagon::L2_loadri_io), DestReg)
@@ -1373,7 +1371,8 @@
       static const CrashPseudoSourceValue CrashPSV(*this);
       MachineMemOperand *MMO = MF.getMachineMemOperand(
           MachinePointerInfo(&CrashPSV),
-          MachineMemOperand::MOLoad | MachineMemOperand::MOVolatile, 8, 1);
+          MachineMemOperand::MOLoad | MachineMemOperand::MOVolatile, 8,
+          Align(1));
       BuildMI(MBB, MI, DL, get(Hexagon::PS_loadrdabs), Hexagon::D13)
         .addImm(0xBADC0FEE)  // Misaligned load.
         .addMemOperand(MMO);
diff --git a/llvm/lib/Target/MSP430/MSP430InstrInfo.cpp b/llvm/lib/Target/MSP430/MSP430InstrInfo.cpp
--- a/llvm/lib/Target/MSP430/MSP430InstrInfo.cpp
+++ b/llvm/lib/Target/MSP430/MSP430InstrInfo.cpp
@@ -46,7 +46,7 @@
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FrameIdx),
       MachineMemOperand::MOStore, MFI.getObjectSize(FrameIdx),
-      MFI.getObjectAlignment(FrameIdx));
+      MFI.getObjectAlign(FrameIdx));
 
   if (RC == &MSP430::GR16RegClass)
     BuildMI(MBB, MI, DL, get(MSP430::MOV16mr))
diff --git a/llvm/lib/Target/Mips/MipsCallLowering.cpp b/llvm/lib/Target/Mips/MipsCallLowering.cpp
--- a/llvm/lib/Target/Mips/MipsCallLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsCallLowering.cpp
@@ -271,8 +271,9 @@
   MachinePointerInfo MPO =
       MachinePointerInfo::getStack(MIRBuilder.getMF(), Offset);
   unsigned Size = alignTo(VA.getValVT().getSizeInBits(), 8) / 8;
-  unsigned Align = MinAlign(TFL->getStackAlignment(), Offset);
-  MMO = MF.getMachineMemOperand(MPO, MachineMemOperand::MOStore, Size, Align);
+  Align Alignment = commonAlignment(TFL->getStackAlign(), Offset);
+  MMO =
+      MF.getMachineMemOperand(MPO, MachineMemOperand::MOStore, Size, Alignment);
 
   return AddrReg.getReg(0);
 }
@@ -485,9 +486,8 @@
       MachinePointerInfo MPO = MachinePointerInfo::getFixedStack(MF, FI);
       MachineInstrBuilder FrameIndex =
           MIRBuilder.buildFrameIndex(LLT::pointer(MPO.getAddrSpace(), 32), FI);
-      MachineMemOperand *MMO =
-          MF.getMachineMemOperand(MPO, MachineMemOperand::MOStore, RegSize,
-                                  /* Alignment */ RegSize);
+      MachineMemOperand *MMO = MF.getMachineMemOperand(
+          MPO, MachineMemOperand::MOStore, RegSize, Align(RegSize));
       MIRBuilder.buildStore(Copy, FrameIndex, *MMO);
     }
   }
diff --git a/llvm/lib/Target/Mips/MipsFastISel.cpp b/llvm/lib/Target/Mips/MipsFastISel.cpp
--- a/llvm/lib/Target/Mips/MipsFastISel.cpp
+++ b/llvm/lib/Target/Mips/MipsFastISel.cpp
@@ -795,12 +795,11 @@
   }
   if (Addr.isFIBase()) {
     unsigned FI = Addr.getFI();
-    unsigned Align = 4;
     int64_t Offset = Addr.getOffset();
     MachineFrameInfo &MFI = MF->getFrameInfo();
     MachineMemOperand *MMO = MF->getMachineMemOperand(
         MachinePointerInfo::getFixedStack(*MF, FI), MachineMemOperand::MOLoad,
-        MFI.getObjectSize(FI), Align);
+        MFI.getObjectSize(FI), Align(4));
     BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ResultReg)
         .addFrameIndex(FI)
         .addImm(Offset)
@@ -846,12 +845,11 @@
   }
   if (Addr.isFIBase()) {
     unsigned FI = Addr.getFI();
-    unsigned Align = 4;
     int64_t Offset = Addr.getOffset();
     MachineFrameInfo &MFI = MF->getFrameInfo();
     MachineMemOperand *MMO = MF->getMachineMemOperand(
         MachinePointerInfo::getFixedStack(*MF, FI), MachineMemOperand::MOStore,
-        MFI.getObjectSize(FI), Align);
+        MFI.getObjectSize(FI), Align(4));
     BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc))
         .addReg(SrcReg)
         .addFrameIndex(FI)
@@ -1263,7 +1261,7 @@
       Addr.setReg(Mips::SP);
       Addr.setOffset(VA.getLocMemOffset() + BEAlign);
 
-      unsigned Alignment = DL.getABITypeAlignment(ArgVal->getType());
+      Align Alignment = DL.getABITypeAlign(ArgVal->getType());
       MachineMemOperand *MMO = FuncInfo.MF->getMachineMemOperand(
           MachinePointerInfo::getStack(*FuncInfo.MF, Addr.getOffset()),
           MachineMemOperand::MOStore, ArgVT.getStoreSize(), Alignment);
diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.cpp b/llvm/lib/Target/Mips/MipsInstrInfo.cpp
--- a/llvm/lib/Target/Mips/MipsInstrInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsInstrInfo.cpp
@@ -66,10 +66,10 @@
                              MachineMemOperand::Flags Flags) const {
   MachineFunction &MF = *MBB.getParent();
   MachineFrameInfo &MFI = MF.getFrameInfo();
-  unsigned Align = MFI.getObjectAlignment(FI);
 
   return MF.getMachineMemOperand(MachinePointerInfo::getFixedStack(MF, FI),
-                                 Flags, MFI.getObjectSize(FI), Align);
+                                 Flags, MFI.getObjectSize(FI),
+                                 MFI.getObjectAlign(FI));
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/llvm/lib/Target/Mips/MipsInstructionSelector.cpp b/llvm/lib/Target/Mips/MipsInstructionSelector.cpp
--- a/llvm/lib/Target/Mips/MipsInstructionSelector.cpp
+++ b/llvm/lib/Target/Mips/MipsInstructionSelector.cpp
@@ -393,7 +393,7 @@
             .addUse(DestAddress)
             .addJumpTableIndex(I.getOperand(1).getIndex(), MipsII::MO_ABS_LO)
             .addMemOperand(MF.getMachineMemOperand(
-                MachinePointerInfo(), MachineMemOperand::MOLoad, 4, 4));
+                MachinePointerInfo(), MachineMemOperand::MOLoad, 4, Align(4)));
     if (!constrainSelectedInstRegOperands(*LW, TII, TRI, RBI))
       return false;
 
@@ -681,7 +681,7 @@
         LWGOT->getOperand(2).setTargetFlags(MipsII::MO_GOT);
       LWGOT->addMemOperand(
           MF, MF.getMachineMemOperand(MachinePointerInfo::getGOT(MF),
-                                      MachineMemOperand::MOLoad, 4, 4));
+                                      MachineMemOperand::MOLoad, 4, Align(4)));
       if (!constrainSelectedInstRegOperands(*LWGOT, TII, TRI, RBI))
         return false;
 
@@ -727,9 +727,9 @@
                .addReg(MF.getInfo<MipsFunctionInfo>()
                            ->getGlobalBaseRegForGlobalISel())
                .addJumpTableIndex(I.getOperand(1).getIndex(), MipsII::MO_GOT)
-               .addMemOperand(
-                   MF.getMachineMemOperand(MachinePointerInfo::getGOT(MF),
-                                           MachineMemOperand::MOLoad, 4, 4));
+               .addMemOperand(MF.getMachineMemOperand(
+                   MachinePointerInfo::getGOT(MF), MachineMemOperand::MOLoad, 4,
+                   Align(4)));
     } else {
       MI =
           BuildMI(MBB, I, I.getDebugLoc(), TII.get(Mips::LUi))
diff --git a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
--- a/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsLegalizerInfo.cpp
@@ -525,12 +525,13 @@
   }
   case Intrinsic::vacopy: {
     MachinePointerInfo MPO;
-    auto Tmp = MIRBuilder.buildLoad(LLT::pointer(0, 32), MI.getOperand(2),
-                                    *MI.getMF()->getMachineMemOperand(
-                                        MPO, MachineMemOperand::MOLoad, 4, 4));
+    auto Tmp =
+        MIRBuilder.buildLoad(LLT::pointer(0, 32), MI.getOperand(2),
+                             *MI.getMF()->getMachineMemOperand(
+                                 MPO, MachineMemOperand::MOLoad, 4, Align(4)));
     MIRBuilder.buildStore(Tmp, MI.getOperand(1),
                           *MI.getMF()->getMachineMemOperand(
-                              MPO, MachineMemOperand::MOStore, 4, 4));
+                              MPO, MachineMemOperand::MOStore, 4, Align(4)));
     MI.eraseFromParent();
     return true;
   }
diff --git a/llvm/lib/Target/PowerPC/PPCFastISel.cpp b/llvm/lib/Target/PowerPC/PPCFastISel.cpp
--- a/llvm/lib/Target/PowerPC/PPCFastISel.cpp
+++ b/llvm/lib/Target/PowerPC/PPCFastISel.cpp
@@ -536,7 +536,7 @@
         MachinePointerInfo::getFixedStack(*FuncInfo.MF, Addr.Base.FI,
                                           Addr.Offset),
         MachineMemOperand::MOLoad, MFI.getObjectSize(Addr.Base.FI),
-        MFI.getObjectAlignment(Addr.Base.FI));
+        MFI.getObjectAlign(Addr.Base.FI));
 
     BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc), ResultReg)
       .addImm(Addr.Offset).addFrameIndex(Addr.Base.FI).addMemOperand(MMO);
@@ -682,7 +682,7 @@
         MachinePointerInfo::getFixedStack(*FuncInfo.MF, Addr.Base.FI,
                                           Addr.Offset),
         MachineMemOperand::MOStore, MFI.getObjectSize(Addr.Base.FI),
-        MFI.getObjectAlignment(Addr.Base.FI));
+        MFI.getObjectAlign(Addr.Base.FI));
 
     BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(Opc))
         .addReg(SrcReg)
@@ -1996,9 +1996,9 @@
     return 0;
 
   // All FP constants are loaded from the constant pool.
-  unsigned Align = DL.getPrefTypeAlignment(CFP->getType());
-  assert(Align > 0 && "Unexpectedly missing alignment information!");
-  unsigned Idx = MCP.getConstantPoolIndex(cast<Constant>(CFP), Align);
+  Align Alignment = DL.getPrefTypeAlign(CFP->getType());
+  unsigned Idx =
+      MCP.getConstantPoolIndex(cast<Constant>(CFP), Alignment.value());
   const bool HasSPE = PPCSubTarget->hasSPE();
   const TargetRegisterClass *RC;
   if (HasSPE)
@@ -2011,7 +2011,7 @@
 
   MachineMemOperand *MMO = FuncInfo.MF->getMachineMemOperand(
       MachinePointerInfo::getConstantPool(*FuncInfo.MF),
-      MachineMemOperand::MOLoad, (VT == MVT::f32) ? 4 : 8, Align);
+      MachineMemOperand::MOLoad, (VT == MVT::f32) ? 4 : 8, Alignment);
 
   unsigned Opc;
 
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.h b/llvm/lib/Target/PowerPC/PPCISelLowering.h
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.h
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.h
@@ -991,7 +991,7 @@
       MachinePointerInfo MPI;
       bool IsDereferenceable = false;
       bool IsInvariant = false;
-      unsigned Alignment = 0;
+      Align Alignment;
       AAMDNodes AAInfo;
       const MDNode *Ranges = nullptr;
 
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -8054,7 +8054,7 @@
   RLI.MPI = LD->getPointerInfo();
   RLI.IsDereferenceable = LD->isDereferenceable();
   RLI.IsInvariant = LD->isInvariant();
-  RLI.Alignment = LD->getAlignment();
+  RLI.Alignment = LD->getAlign();
   RLI.AAInfo = LD->getAAInfo();
   RLI.Ranges = LD->getRanges();
 
@@ -8380,7 +8380,7 @@
       RLI.Chain = Store;
       RLI.MPI =
           MachinePointerInfo::getFixedStack(DAG.getMachineFunction(), FrameIdx);
-      RLI.Alignment = 4;
+      RLI.Alignment = Align(4);
 
       MachineMemOperand *MMO =
         MF.getMachineMemOperand(RLI.MPI, MachineMemOperand::MOLoad, 4,
@@ -8432,7 +8432,7 @@
       RLI.Chain = Store;
       RLI.MPI =
           MachinePointerInfo::getFixedStack(DAG.getMachineFunction(), FrameIdx);
-      RLI.Alignment = 4;
+      RLI.Alignment = Align(4);
     }
 
     MachineMemOperand *MMO =
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.cpp
@@ -1238,7 +1238,7 @@
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FrameIdx),
       MachineMemOperand::MOStore, MFI.getObjectSize(FrameIdx),
-      MFI.getObjectAlignment(FrameIdx));
+      MFI.getObjectAlign(FrameIdx));
   NewMIs.back()->addMemOperand(MF, MMO);
 }
 
@@ -1301,7 +1301,7 @@
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       MachinePointerInfo::getFixedStack(MF, FrameIdx),
       MachineMemOperand::MOLoad, MFI.getObjectSize(FrameIdx),
-      MFI.getObjectAlignment(FrameIdx));
+      MFI.getObjectAlign(FrameIdx));
   NewMIs.back()->addMemOperand(MF, MMO);
 }
 
diff --git a/llvm/test/TableGen/address-space-patfrags.td b/llvm/test/TableGen/address-space-patfrags.td
--- a/llvm/test/TableGen/address-space-patfrags.td
+++ b/llvm/test/TableGen/address-space-patfrags.td
@@ -81,7 +81,7 @@
 
 // SDAG-NEXT: if (AddrSpace != 999)
 // SDAG-NEXT: return false;
-// SDAG-NEXT: if (cast<MemSDNode>(N)->getAlignment() < 2)
+// SDAG-NEXT: if (cast<MemSDNode>(N)->getAlign() < Align(2))
 // SDAG-NEXT: return false;
 // SDAG-NEXT: if (cast<MemSDNode>(N)->getMemoryVT() != MVT::i32) return false;
 // SDAG-NEXT: return true;
diff --git a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
--- a/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/llvm/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -999,9 +999,9 @@
 
     int64_t MinAlign = getMinAlignment();
     if (MinAlign > 0) {
-      Code += "if (cast<MemSDNode>(N)->getAlignment() < ";
+      Code += "if (cast<MemSDNode>(N)->getAlign() < Align(";
       Code += utostr(MinAlign);
-      Code += ")\nreturn false;\n";
+      Code += "))\nreturn false;\n";
     }
 
     Record *MemoryVT = getMemoryVT();