diff --git a/llvm/include/llvm/CodeGen/SelectionDAGNodes.h b/llvm/include/llvm/CodeGen/SelectionDAGNodes.h
--- a/llvm/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/llvm/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -1855,8 +1855,6 @@
   // Return the alignment of this constant pool object, which is either 0 (for
   // default alignment) or the desired value.
   Align getAlign() const { return Alignment; }
-  // TODO: Remove once transition to getAlign is over.
-  unsigned getAlignment() const { return Alignment.value(); }
   unsigned getTargetFlags() const { return TargetFlags; }
 
   Type *getType() const;
diff --git a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -413,23 +413,14 @@
     MIB.addJumpTableIndex(JT->getIndex(), JT->getTargetFlags());
   } else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Op)) {
     int Offset = CP->getOffset();
-    unsigned Align = CP->getAlignment();
-    Type *Type = CP->getType();
-    // MachineConstantPool wants an explicit alignment.
-    if (Align == 0) {
-      Align = MF->getDataLayout().getPrefTypeAlignment(Type);
-      if (Align == 0) {
-        // Alignment of vector types.  FIXME!
-        Align = MF->getDataLayout().getTypeAllocSize(Type);
-      }
-    }
+    Align Alignment = CP->getAlign();
 
     unsigned Idx;
     MachineConstantPool *MCP = MF->getConstantPool();
     if (CP->isMachineConstantPoolEntry())
-      Idx = MCP->getConstantPoolIndex(CP->getMachineCPVal(), Align);
+      Idx = MCP->getConstantPoolIndex(CP->getMachineCPVal(), Alignment.value());
     else
-      Idx = MCP->getConstantPoolIndex(CP->getConstVal(), Align);
+      Idx = MCP->getConstantPoolIndex(CP->getConstVal(), Alignment.value());
     MIB.addConstantPoolIndex(Idx, Offset, CP->getTargetFlags());
   } else if (ExternalSymbolSDNode *ES = dyn_cast<ExternalSymbolSDNode>(Op)) {
     MIB.addExternalSymbol(ES->getSymbol(), ES->getTargetFlags());
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -328,7 +328,7 @@
 
   SDValue CPIdx =
       DAG.getConstantPool(LLVMC, TLI.getPointerTy(DAG.getDataLayout()));
-  unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
+  Align Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlign();
   if (Extend) {
     SDValue Result = DAG.getExtLoad(
         ISD::EXTLOAD, dl, OrigVT, DAG.getEntryNode(), CPIdx,
@@ -348,7 +348,7 @@
   EVT VT = CP->getValueType(0);
   SDValue CPIdx = DAG.getConstantPool(CP->getConstantIntValue(),
                                       TLI.getPointerTy(DAG.getDataLayout()));
-  unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
+  Align Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlign();
   SDValue Result = DAG.getLoad(
       VT, dl, DAG.getEntryNode(), CPIdx,
       MachinePointerInfo::getConstantPool(DAG.getMachineFunction()), Alignment);
@@ -1964,7 +1964,7 @@
     Constant *CP = ConstantVector::get(CV);
     SDValue CPIdx =
         DAG.getConstantPool(CP, TLI.getPointerTy(DAG.getDataLayout()));
-    unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
+    Align Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlign();
     return DAG.getLoad(
         VT, dl, DAG.getEntryNode(), CPIdx,
         MachinePointerInfo::getConstantPool(DAG.getMachineFunction()),
@@ -2505,9 +2505,9 @@
 
   SDValue CPIdx =
       DAG.getConstantPool(FudgeFactor, TLI.getPointerTy(DAG.getDataLayout()));
-  unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment();
+  Align Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlign();
   CPIdx = DAG.getNode(ISD::ADD, dl, CPIdx.getValueType(), CPIdx, CstOffset);
-  Alignment = std::min(Alignment, 4u);
+  Alignment = commonAlignment(Alignment, 4);
   SDValue FudgeInReg;
   if (DestVT == MVT::f32)
     FudgeInReg = DAG.getLoad(
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.td b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
@@ -2483,7 +2483,7 @@
     return Align && *Align >= 4 && G->getOffset() % 4 == 0;
   }
   if (auto *C = dyn_cast<ConstantPoolSDNode>(N))
-    return C->getAlignment() >= 4 && C->getOffset() % 4 == 0;
+    return C->getAlign() >= 4 && C->getOffset() % 4 == 0;
   return false;
 }]>;
 
diff --git a/llvm/lib/Target/MSP430/MSP430ISelDAGToDAG.cpp b/llvm/lib/Target/MSP430/MSP430ISelDAGToDAG.cpp
--- a/llvm/lib/Target/MSP430/MSP430ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/MSP430/MSP430ISelDAGToDAG.cpp
@@ -146,7 +146,7 @@
     //AM.SymbolFlags = G->getTargetFlags();
   } else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(N0)) {
     AM.CP = CP->getConstVal();
-    AM.Align = CP->getAlignment();
+    AM.Align = CP->getAlign().value();
     AM.Disp += CP->getOffset();
     //AM.SymbolFlags = CP->getTargetFlags();
   } else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(N0)) {
diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
--- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -1625,7 +1625,7 @@
     Offset = G->getOffset();
   } else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(N0)) {
     AM.CP = CP->getConstVal();
-    AM.Align = CP->getAlignment();
+    AM.Align = CP->getAlign().value();
     AM.SymbolFlags = CP->getTargetFlags();
     Offset = CP->getOffset();
   } else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(N0)) {
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -8670,7 +8670,7 @@
           SDValue CP = DAG.getConstantPool(C, PVT);
           unsigned Repeat = VT.getSizeInBits() / SplatBitSize;
 
-          Align Alignment(cast<ConstantPoolSDNode>(CP)->getAlignment());
+          Align Alignment = cast<ConstantPoolSDNode>(CP)->getAlign();
           SDVTList Tys =
               DAG.getVTList(MVT::getVectorVT(CVT, Repeat), MVT::Other);
           SDValue Ops[] = {DAG.getEntryNode(), CP};
@@ -8688,7 +8688,7 @@
                                              *Ctx);
           SDValue VCP = DAG.getConstantPool(VecC, PVT);
           unsigned NumElm = SplatBitSize / VT.getScalarSizeInBits();
-          Align Alignment(cast<ConstantPoolSDNode>(VCP)->getAlignment());
+          Align Alignment = cast<ConstantPoolSDNode>(VCP)->getAlign();
           Ld = DAG.getLoad(
               MVT::getVectorVT(CVT, NumElm), dl, DAG.getEntryNode(), VCP,
               MachinePointerInfo::getConstantPool(DAG.getMachineFunction()),
@@ -8758,7 +8758,7 @@
       const TargetLowering &TLI = DAG.getTargetLoweringInfo();
       SDValue CP =
           DAG.getConstantPool(C, TLI.getPointerTy(DAG.getDataLayout()));
-      Align Alignment(cast<ConstantPoolSDNode>(CP)->getAlignment());
+      Align Alignment = cast<ConstantPoolSDNode>(CP)->getAlign();
 
       SDVTList Tys = DAG.getVTList(VT, MVT::Other);
       SDValue Ops[] = {DAG.getEntryNode(), CP};
@@ -19886,7 +19886,7 @@
   APInt FF(64, 0x5F80000000000000ULL);
   SDValue FudgePtr = DAG.getConstantPool(
       ConstantInt::get(*DAG.getContext(), FF), PtrVT);
-  Align CPAlignment(cast<ConstantPoolSDNode>(FudgePtr)->getAlignment());
+  Align CPAlignment = cast<ConstantPoolSDNode>(FudgePtr)->getAlign();
 
   // Get a pointer to FF if the sign bit was set, or to 0 otherwise.
   SDValue Zero = DAG.getIntPtrConstant(0, dl);