diff --git a/clang/lib/CodeGen/Address.h b/clang/lib/CodeGen/Address.h
--- a/clang/lib/CodeGen/Address.h
+++ b/clang/lib/CodeGen/Address.h
@@ -25,12 +25,7 @@
 // Indicates whether a pointer is known not to be null.
 enum KnownNonNull_t { NotKnownNonNull, KnownNonNull };
 
-// We try to save some space by using 6 bits over two PointerIntPairs to store
-// the alignment. However, some arches don't support 3 bits in a PointerIntPair
-// so we fallback to storing the alignment separately.
-template <typename T, bool = alignof(llvm::Value *) >= 8> class AddressImpl {};
-
-template <typename T> class AddressImpl<T, false> {
+class AddressImpl {
   llvm::PointerIntPair<llvm::Value *, 1, bool> PointerAndKnownNonNull;
   llvm::Type *ElementType;
   CharUnits Alignment;
@@ -51,45 +46,9 @@
   void setKnownNonNull() { PointerAndKnownNonNull.setInt(true); }
 };
 
-template <typename T> class AddressImpl<T, true> {
-  // Int portion stores the non-null bit and the upper 2 bits of the log of the
-  // alignment.
-  llvm::PointerIntPair<llvm::Value *, 3, unsigned> Pointer;
-  // Int portion stores lower 3 bits of the log of the alignment.
-  llvm::PointerIntPair<llvm::Type *, 3, unsigned> ElementType;
-
-public:
-  AddressImpl(llvm::Value *Pointer, llvm::Type *ElementType,
-              CharUnits Alignment, KnownNonNull_t IsKnownNonNull)
-      : Pointer(Pointer), ElementType(ElementType) {
-    if (Alignment.isZero()) {
-      this->Pointer.setInt(IsKnownNonNull << 2);
-      return;
-    }
-    // Currently the max supported alignment is exactly 1 << 32 and is
-    // guaranteed to be a power of 2, so we can store the log of the alignment
-    // into 5 bits.
-    assert(Alignment.isPowerOfTwo() && "Alignment cannot be zero");
-    auto AlignLog = llvm::Log2_64(Alignment.getQuantity());
-    assert(AlignLog < (1 << 5) && "cannot fit alignment into 5 bits");
-    this->Pointer.setInt(IsKnownNonNull << 2 | AlignLog >> 3);
-    this->ElementType.setInt(AlignLog & 7);
-  }
-  llvm::Value *getPointer() const { return Pointer.getPointer(); }
-  llvm::Type *getElementType() const { return ElementType.getPointer(); }
-  CharUnits getAlignment() const {
-    unsigned AlignLog = ((Pointer.getInt() & 0x3) << 3) | ElementType.getInt();
-    return CharUnits::fromQuantity(CharUnits::QuantityType(1) << AlignLog);
-  }
-  KnownNonNull_t isKnownNonNull() const {
-    return (KnownNonNull_t)(!!(Pointer.getInt() & 0x4));
-  }
-  void setKnownNonNull() { Pointer.setInt(Pointer.getInt() | 0x4); }
-};
-
 /// An aligned address.
 class Address {
-  AddressImpl<void> A;
+  AddressImpl A;
 
 protected:
   Address(std::nullptr_t)