diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -1245,6 +1245,10 @@
     ``dereferenceable(<n>)``). This attribute may only be applied to
     pointer typed parameters.
 
+``maxobjsize(<n>)``
+    This indicates that the parameter or return pointer is a pointer to an object
+    that has at most ``n`` bytes.
+
 ``swiftself``
     This indicates that the parameter is the self/context parameter. This is not
     a valid attribute for return values and can only be applied to one
diff --git a/llvm/include/llvm/Bitcode/LLVMBitCodes.h b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
--- a/llvm/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
@@ -650,6 +650,7 @@
   ATTR_KIND_NULL_POINTER_IS_VALID = 67,
   ATTR_KIND_NOUNDEF = 68,
   ATTR_KIND_BYREF = 69,
+  ATTR_KIND_MAX_OBJ_SIZE = 70
 };
 
 enum ComdatSelectionKindCodes {
diff --git a/llvm/include/llvm/IR/Argument.h b/llvm/include/llvm/IR/Argument.h
--- a/llvm/include/llvm/IR/Argument.h
+++ b/llvm/include/llvm/IR/Argument.h
@@ -54,6 +54,10 @@
   /// addrspace(0).
   bool hasNonNullAttr() const;
 
+  /// If this argument has the maxobjsize attribute, return the number of bytes
+  /// known to be maximal for the pointee. Otherwise, 0 is returned.
+  uint64_t getMaxObjSizeBytes() const;
+
   /// If this argument has the dereferenceable attribute, return the number of
   /// bytes known to be dereferenceable. Otherwise, zero is returned.
   uint64_t getDereferenceableBytes() const;
diff --git a/llvm/include/llvm/IR/Attributes.h b/llvm/include/llvm/IR/Attributes.h
--- a/llvm/include/llvm/IR/Attributes.h
+++ b/llvm/include/llvm/IR/Attributes.h
@@ -100,6 +100,7 @@
   /// alignment set.
   static Attribute getWithAlignment(LLVMContext &Context, Align Alignment);
   static Attribute getWithStackAlignment(LLVMContext &Context, Align Alignment);
+  static Attribute getWithMaxObjSizeBytes(LLVMContext &Context, uint64_t Bytes);
   static Attribute getWithDereferenceableBytes(LLVMContext &Context,
                                               uint64_t Bytes);
   static Attribute getWithDereferenceableOrNullBytes(LLVMContext &Context,
@@ -176,6 +177,9 @@
   /// alignment value.
   MaybeAlign getStackAlignment() const;
 
+  /// Returns the maximum number of bytes of the pointee.
+  uint64_t getMaxObjSizeBytes() const;
+
   /// Returns the number of dereferenceable bytes from the
   /// dereferenceable attribute.
   uint64_t getDereferenceableBytes() const;
@@ -304,6 +308,7 @@
 
   MaybeAlign getAlignment() const;
   MaybeAlign getStackAlignment() const;
+  uint64_t getMaxObjSizeBytes() const;
   uint64_t getDereferenceableBytes() const;
   uint64_t getDereferenceableOrNullBytes() const;
   Type *getByValType() const;
@@ -508,6 +513,11 @@
     return removeAttributes(C, ArgNo + FirstArgIndex);
   }
 
+  /// \brief Add the maxobjsize attribute to the attribute set at the given
+  /// index. Returns a new list because attribute lists are immutable.
+  LLVM_NODISCARD AttributeList addMaxObjSizeAttr(LLVMContext &C, unsigned Index,
+                                                 uint64_t Bytes) const;
+
   /// \brief Add the dereferenceable attribute to the attribute set at the given
   /// index. Returns a new list because attribute lists are immutable.
   LLVM_NODISCARD AttributeList addDereferenceableAttr(LLVMContext &C,
@@ -640,6 +650,14 @@
   /// Get the stack alignment.
   MaybeAlign getStackAlignment(unsigned Index) const;
 
+  /// Get the maximal number of bytes for the underlying object.
+  uint64_t getMaxObjSizeBytes(unsigned Index) const;
+
+  /// Get the number of maxobjsize bytes (or 0 if unknown) of an arg.
+  uint64_t getParamMaxObjSizeBytes(unsigned ArgNo) const {
+    return getMaxObjSizeBytes(ArgNo + FirstArgIndex);
+  }
+
   /// Get the number of dereferenceable bytes (or zero if unknown).
   uint64_t getDereferenceableBytes(unsigned Index) const;
 
@@ -733,6 +751,7 @@
   std::map<std::string, std::string, std::less<>> TargetDepAttrs;
   MaybeAlign Alignment;
   MaybeAlign StackAlignment;
+  uint64_t MaxObjSizeBytes = 0;
   uint64_t DerefBytes = 0;
   uint64_t DerefOrNullBytes = 0;
   uint64_t AllocSizeArgs = 0;
@@ -813,6 +832,9 @@
   /// Retrieve the stack alignment attribute, if it exists.
   MaybeAlign getStackAlignment() const { return StackAlignment; }
 
+  /// Retreive the number of bytes the underlying object can have.
+  uint64_t getMaxObjSizeBytes() const { return MaxObjSizeBytes; }
+
   /// Retrieve the number of dereferenceable bytes, if the
   /// dereferenceable attribute exists (zero is returned otherwise).
   uint64_t getDereferenceableBytes() const { return DerefBytes; }
@@ -858,6 +880,10 @@
     return addStackAlignmentAttr(MaybeAlign(Align));
   }
 
+  /// This turns the number of max object size bytes into the form used
+  /// internally in Attribute.
+  AttrBuilder &addMaxObjSizeAttr(uint64_t Bytes);
+
   /// This turns the number of dereferenceable bytes into the form used
   /// internally in Attribute.
   AttrBuilder &addDereferenceableAttr(uint64_t Bytes);
diff --git a/llvm/include/llvm/IR/Attributes.td b/llvm/include/llvm/IR/Attributes.td
--- a/llvm/include/llvm/IR/Attributes.td
+++ b/llvm/include/llvm/IR/Attributes.td
@@ -51,6 +51,9 @@
 /// Can only be moved to control-equivalent blocks.
 def Convergent : EnumAttr<"convergent">;
 
+/// Pointee is known to have a maximal size.
+def MaxObjSize : IntAttr<"maxobjsize">;
+
 /// Pointer is known to be dereferenceable.
 def Dereferenceable : IntAttr<"dereferenceable">;
 
diff --git a/llvm/include/llvm/IR/Function.h b/llvm/include/llvm/IR/Function.h
--- a/llvm/include/llvm/IR/Function.h
+++ b/llvm/include/llvm/IR/Function.h
@@ -477,6 +477,12 @@
     return AttributeSets.getParamByRefType(ArgNo);
   }
 
+  /// Extract the number of maxobjsize bytes for a parameter.
+  /// @param ArgNo Index of an argument, with 0 being the first function arg.
+  uint64_t getParamMaxObjSizeBytes(unsigned ArgNo) const {
+    return AttributeSets.getParamMaxObjSizeBytes(ArgNo);
+  }
+
   /// Extract the number of dereferenceable bytes for a call or
   /// parameter (0=unknown).
   /// @param i AttributeList index, referring to a return value or argument.
diff --git a/llvm/include/llvm/IR/InstrTypes.h b/llvm/include/llvm/IR/InstrTypes.h
--- a/llvm/include/llvm/IR/InstrTypes.h
+++ b/llvm/include/llvm/IR/InstrTypes.h
@@ -1637,6 +1637,12 @@
     return Ty ? Ty : getArgOperand(ArgNo)->getType()->getPointerElementType();
   }
 
+  /// Extract the number of maxobjsize bytes for a call or parameter
+  /// (0=unknown)
+  uint64_t getMaxObjSizeBytes(unsigned i) const {
+    return Attrs.getMaxObjSizeBytes(i);
+  }
+
   /// Extract the number of dereferenceable bytes for a call or
   /// parameter (0=unknown).
   uint64_t getDereferenceableBytes(unsigned i) const {
diff --git a/llvm/include/llvm/IR/Value.h b/llvm/include/llvm/IR/Value.h
--- a/llvm/include/llvm/IR/Value.h
+++ b/llvm/include/llvm/IR/Value.h
@@ -670,6 +670,10 @@
         static_cast<const Value *>(this)->stripInBoundsOffsets(Func));
   }
 
+  /// Returns the number of bytes known to be the maximal extend for the
+  /// pointer value.
+  uint64_t getPointerMaxObjSizeBytes(const DataLayout &DL) const;
+
   /// Returns the number of bytes known to be dereferenceable for the
   /// pointer value.
   ///
diff --git a/llvm/include/llvm/Transforms/IPO/Attributor.h b/llvm/include/llvm/Transforms/IPO/Attributor.h
--- a/llvm/include/llvm/Transforms/IPO/Attributor.h
+++ b/llvm/include/llvm/Transforms/IPO/Attributor.h
@@ -1936,9 +1936,22 @@
 
 /// Specialization of the integer state for a decreasing value, hence 0 is the
 /// best state and ~0u the worst.
-template <typename base_ty = uint32_t>
-struct DecIntegerState : public IntegerStateBase<base_ty, 0, ~base_ty(0)> {
+template <typename base_ty = uint32_t, base_ty BestState = base_ty(0),
+          base_ty WorstState = ~base_ty(0)>
+struct DecIntegerState
+    : public IntegerStateBase<base_ty, BestState, WorstState> {
   using base_t = base_ty;
+  using super = IntegerStateBase<base_t, BestState, WorstState>;
+
+  DecIntegerState() : super() {}
+  DecIntegerState(base_t Assumed) : super(Assumed) {}
+
+  /// Return the best possible representable state.
+  static constexpr base_t getBestState() { return BestState; }
+  static constexpr base_t
+  getBestState(const DecIntegerState<base_ty, BestState, WorstState> &) {
+    return getBestState();
+  }
 
   /// Take maximum of assumed and \p Value.
   DecIntegerState &takeAssumedMaximum(base_t Value) {
@@ -3005,6 +3018,138 @@
   static const char ID;
 };
 
+struct MaxObjState : AbstractState {
+  static MaxObjState getBestState() { return MaxObjState(); }
+  static MaxObjState getBestState(const MaxObjState &) {
+    return getBestState();
+  }
+
+  /// Return the worst possible representable state.
+  static MaxObjState getWorstState() {
+    MaxObjState DS;
+    DS.indicatePessimisticFixpoint();
+    return DS;
+  }
+  static MaxObjState getWorstState(const MaxObjState &) {
+    return getWorstState();
+  }
+
+  /// State representing for dereferenceable bytes.
+  DecIntegerState<uint64_t> MaxObjSizeState;
+
+  /// State representing that whether the object is resizable.
+  BooleanState ResizableState;
+
+  /// See AbstractState::isValidState()
+  bool isValidState() const override { return MaxObjSizeState.isValidState(); }
+
+  /// See AbstractState::isAtFixpoint()
+  bool isAtFixpoint() const override {
+    return !isValidState() ||
+           (MaxObjSizeState.isAtFixpoint() && ResizableState.isAtFixpoint());
+  }
+
+  /// See AbstractState::indicateOptimisticFixpoint(...)
+  ChangeStatus indicateOptimisticFixpoint() override {
+    MaxObjSizeState.indicateOptimisticFixpoint();
+    ResizableState.indicateOptimisticFixpoint();
+    return ChangeStatus::UNCHANGED;
+  }
+
+  /// See AbstractState::indicatePessimisticFixpoint(...)
+  ChangeStatus indicatePessimisticFixpoint() override {
+    MaxObjSizeState.indicatePessimisticFixpoint();
+    ResizableState.indicatePessimisticFixpoint();
+    return ChangeStatus::CHANGED;
+  }
+
+  /// Update known maxobjsize bytes.
+  void takeKnownMaxObjBytesMinimum(uint64_t Bytes) {
+    MaxObjSizeState.takeKnownMinimum(Bytes);
+  }
+
+  /// Update assumed maxobjsize bytes.
+  void takeAssumedMaxObjBytesMinimum(uint64_t Bytes) {
+    MaxObjSizeState.takeAssumedMaximum(Bytes);
+  }
+
+  /// Equality for MaxObjState.
+  bool operator==(const MaxObjState &R) const {
+    return this->MaxObjSizeState == R.MaxObjSizeState &&
+           this->ResizableState == R.ResizableState;
+  }
+
+  /// Inequality for MaxObjState.
+  bool operator!=(const MaxObjState &R) const { return !(*this == R); }
+
+  /// See IntegerStateBase::operator^=
+  MaxObjState operator^=(const MaxObjState &R) {
+    MaxObjSizeState ^= R.MaxObjSizeState;
+    ResizableState ^= R.ResizableState;
+    return *this;
+  }
+
+  /// See IntegerStateBase::operator+=
+  MaxObjState operator+=(const MaxObjState &R) {
+    MaxObjSizeState += R.MaxObjSizeState;
+    ResizableState += R.ResizableState;
+    return *this;
+  }
+
+  /// See IntegerStateBase::operator&=
+  MaxObjState operator&=(const MaxObjState &R) {
+    MaxObjSizeState &= R.MaxObjSizeState;
+    ResizableState &= R.ResizableState;
+    return *this;
+  }
+
+  /// See IntegerStateBase::operator|=
+  MaxObjState operator|=(const MaxObjState &R) {
+    MaxObjSizeState |= R.MaxObjSizeState;
+    ResizableState |= R.ResizableState;
+    return *this;
+  }
+};
+
+/// An abstract interface to determine the maximal size of an object.
+struct AAMaxObjSize
+    : public IRAttribute<Attribute::MaxObjSize,
+                         StateWrapper<MaxObjState, AbstractAttribute>> {
+
+  AAMaxObjSize(const IRPosition &IRP, Attributor &A) : IRAttribute(IRP) {}
+
+  /// Return assumed maximal object size.
+  unsigned getAssumedMaxObjSize() const { return MaxObjSizeState.getAssumed(); }
+
+  /// Return known maximal object size.
+  unsigned getKnownMaxObjSize() const { return MaxObjSizeState.getKnown(); }
+
+  /// Return true if we assume that underlying value is
+  /// resizable.
+  bool isAssumedResizable() const { return ResizableState.getAssumed(); }
+
+  /// Return true if we know that underlying value is
+  /// resizable.
+  bool isKnownResizable() const { return ResizableState.getKnown(); }
+
+  /// Create an abstract attribute view for the position \p IRP.
+  static AAMaxObjSize &createForPosition(const IRPosition &IRP, Attributor &A);
+
+  /// This function should return true if the type of the \p AA is AAAlign
+  static bool classof(const AbstractAttribute *AA) {
+    return (AA->getIdAddr() == &ID);
+  }
+
+  /// See AbstractAttribute::getName()
+  const std::string getName() const override { return "AAMaxObjSize"; }
+
+  /// See AbstractAttribute::getIdAddr()
+  const char *getIdAddr() const override { return &ID; }
+
+  /// Unique ID (due to the unique address)
+  static const char ID;
+};
+
 using AAAlignmentStateType =
     IncIntegerState<uint32_t, Value::MaximumAlignment, 0>;
 /// An abstract interface for all align attributes.
diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -639,6 +639,7 @@
   KEYWORD(inalloca);
   KEYWORD(cold);
   KEYWORD(convergent);
+  KEYWORD(maxobjsize);
   KEYWORD(dereferenceable);
   KEYWORD(dereferenceable_or_null);
   KEYWORD(inaccessiblememonly);
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -1376,6 +1376,7 @@
               "invalid use of attribute on a function");
       break;
     case lltok::kw_byval:
+    case lltok::kw_maxobjsize:
     case lltok::kw_dereferenceable:
     case lltok::kw_dereferenceable_or_null:
     case lltok::kw_inalloca:
@@ -1669,6 +1670,13 @@
       B.addPreallocatedAttr(Ty);
       continue;
     }
+    case lltok::kw_maxobjsize: {
+      uint64_t Bytes;
+      if (ParseOptionalDerefAttrBytes(lltok::kw_maxobjsize, Bytes))
+        return true;
+      B.addMaxObjSizeAttr(Bytes);
+      continue;
+    }
     case lltok::kw_dereferenceable: {
       uint64_t Bytes;
       if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
@@ -1770,6 +1778,13 @@
         return true;
       continue;
     }
+    case lltok::kw_maxobjsize: {
+      uint64_t Bytes;
+      if (ParseOptionalDerefAttrBytes(lltok::kw_maxobjsize, Bytes))
+        return true;
+      B.addMaxObjSizeAttr(Bytes);
+      continue;
+    }
     case lltok::kw_dereferenceable: {
       uint64_t Bytes;
       if (ParseOptionalDerefAttrBytes(lltok::kw_dereferenceable, Bytes))
@@ -2186,7 +2201,8 @@
 bool LLParser::ParseOptionalDerefAttrBytes(lltok::Kind AttrKind,
                                            uint64_t &Bytes) {
   assert((AttrKind == lltok::kw_dereferenceable ||
-          AttrKind == lltok::kw_dereferenceable_or_null) &&
+          AttrKind == lltok::kw_dereferenceable_or_null ||
+          AttrKind == lltok::kw_maxobjsize) &&
          "contract!");
 
   Bytes = 0;
diff --git a/llvm/lib/AsmParser/LLToken.h b/llvm/lib/AsmParser/LLToken.h
--- a/llvm/lib/AsmParser/LLToken.h
+++ b/llvm/lib/AsmParser/LLToken.h
@@ -185,6 +185,7 @@
   kw_inalloca,
   kw_cold,
   kw_convergent,
+  kw_maxobjsize,
   kw_dereferenceable,
   kw_dereferenceable_or_null,
   kw_inaccessiblememonly,
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -1453,6 +1453,8 @@
     return Attribute::NonLazyBind;
   case bitc::ATTR_KIND_NON_NULL:
     return Attribute::NonNull;
+  case bitc::ATTR_KIND_MAX_OBJ_SIZE:
+    return Attribute::MaxObjSize;
   case bitc::ATTR_KIND_DEREFERENCEABLE:
     return Attribute::Dereferenceable;
   case bitc::ATTR_KIND_DEREFERENCEABLE_OR_NULL:
@@ -1621,6 +1623,8 @@
             B.addAlignmentAttr(Record[++i]);
           else if (Kind == Attribute::StackAlignment)
             B.addStackAlignmentAttr(Record[++i]);
+          else if (Kind == Attribute::MaxObjSize)
+            B.addMaxObjSizeAttr(Record[++i]);
           else if (Kind == Attribute::Dereferenceable)
             B.addDereferenceableAttr(Record[++i]);
           else if (Kind == Attribute::DereferenceableOrNull)
diff --git a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
--- a/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
+++ b/llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
@@ -661,6 +661,8 @@
     return bitc::ATTR_KIND_NON_LAZY_BIND;
   case Attribute::NonNull:
     return bitc::ATTR_KIND_NON_NULL;
+  case Attribute::MaxObjSize:
+    return bitc::ATTR_KIND_MAX_OBJ_SIZE;
   case Attribute::Dereferenceable:
     return bitc::ATTR_KIND_DEREFERENCEABLE;
   case Attribute::DereferenceableOrNull:
diff --git a/llvm/lib/IR/AttributeImpl.h b/llvm/lib/IR/AttributeImpl.h
--- a/llvm/lib/IR/AttributeImpl.h
+++ b/llvm/lib/IR/AttributeImpl.h
@@ -249,6 +249,7 @@
 
   MaybeAlign getAlignment() const;
   MaybeAlign getStackAlignment() const;
+  uint64_t getMaxObjSizeBytes() const;
   uint64_t getDereferenceableBytes() const;
   uint64_t getDereferenceableOrNullBytes() const;
   std::pair<unsigned, Optional<unsigned>> getAllocSizeArgs() const;
diff --git a/llvm/lib/IR/Attributes.cpp b/llvm/lib/IR/Attributes.cpp
--- a/llvm/lib/IR/Attributes.cpp
+++ b/llvm/lib/IR/Attributes.cpp
@@ -156,6 +156,12 @@
   return get(Context, StackAlignment, A.value());
 }
 
+Attribute Attribute::getWithMaxObjSizeBytes(LLVMContext &Context,
+                                            uint64_t Bytes) {
+  assert(Bytes != uint64_t(0) && "Bytes must be != 0");
+  return get(Context, MaxObjSize, Bytes);
+}
+
 Attribute Attribute::getWithDereferenceableBytes(LLVMContext &Context,
                                                 uint64_t Bytes) {
   assert(Bytes && "Bytes must be non-zero.");
@@ -214,6 +220,7 @@
 bool Attribute::doesAttrKindHaveArgument(Attribute::AttrKind AttrKind) {
   return AttrKind == Attribute::Alignment ||
          AttrKind == Attribute::StackAlignment ||
+         AttrKind == Attribute::MaxObjSize ||
          AttrKind == Attribute::Dereferenceable ||
          AttrKind == Attribute::AllocSize ||
          AttrKind == Attribute::DereferenceableOrNull;
@@ -304,6 +311,13 @@
   return MaybeAlign(pImpl->getValueAsInt());
 }
 
+uint64_t Attribute::getMaxObjSizeBytes() const {
+  assert(hasAttribute(Attribute::MaxObjSize) &&
+         "Trying to get the maximal object size from "
+         "non-maxobjsize attribute!");
+  return pImpl->getValueAsInt();
+}
+
 uint64_t Attribute::getDereferenceableBytes() const {
   assert(hasAttribute(Attribute::Dereferenceable) &&
          "Trying to get dereferenceable bytes from "
@@ -504,6 +518,9 @@
   if (hasAttribute(Attribute::StackAlignment))
     return AttrWithBytesToString("alignstack");
 
+  if (hasAttribute(Attribute::MaxObjSize))
+    return AttrWithBytesToString("maxobjsize");
+
   if (hasAttribute(Attribute::Dereferenceable))
     return AttrWithBytesToString("dereferenceable");
 
@@ -738,6 +755,10 @@
   return SetNode ? SetNode->getStackAlignment() : None;
 }
 
+uint64_t AttributeSet::getMaxObjSizeBytes() const {
+  return SetNode ? SetNode->getMaxObjSizeBytes() : 0;
+}
+
 uint64_t AttributeSet::getDereferenceableBytes() const {
   return SetNode ? SetNode->getDereferenceableBytes() : 0;
 }
@@ -864,6 +885,10 @@
       assert(B.getStackAlignment() && "StackAlignment must be set");
       Attr = Attribute::getWithStackAlignment(C, *B.getStackAlignment());
       break;
+    case Attribute::MaxObjSize:
+      assert(B.getMaxObjSizeBytes() && "MaxObjSize must be set");
+      Attr = Attribute::getWithMaxObjSizeBytes(C, B.getMaxObjSizeBytes());
+      break;
     case Attribute::Dereferenceable:
       Attr = Attribute::getWithDereferenceableBytes(
           C, B.getDereferenceableBytes());
@@ -951,6 +976,12 @@
   return nullptr;
 }
 
+uint64_t AttributeSetNode::getMaxObjSizeBytes() const {
+  if (auto A = findEnumAttribute(Attribute::MaxObjSize))
+    return A->getMaxObjSizeBytes();
+  return 0;
+}
+
 uint64_t AttributeSetNode::getDereferenceableBytes() const {
   if (auto A = findEnumAttribute(Attribute::Dereferenceable))
     return A->getDereferenceableBytes();
@@ -1373,6 +1404,13 @@
   return getImpl(C, AttrSets);
 }
 
+AttributeList AttributeList::addMaxObjSizeAttr(LLVMContext &C, unsigned Index,
+                                               uint64_t Bytes) const {
+  AttrBuilder B;
+  B.addMaxObjSizeAttr(Bytes);
+  return addAttributes(C, Index, B);
+}
+
 AttributeList AttributeList::addDereferenceableAttr(LLVMContext &C,
                                                     unsigned Index,
                                                     uint64_t Bytes) const {
@@ -1478,6 +1516,10 @@
   return getAttributes(Index).getStackAlignment();
 }
 
+uint64_t AttributeList::getMaxObjSizeBytes(unsigned Index) const {
+  return getAttributes(Index).getMaxObjSizeBytes();
+}
+
 uint64_t AttributeList::getDereferenceableBytes(unsigned Index) const {
   return getAttributes(Index).getDereferenceableBytes();
 }
@@ -1552,6 +1594,7 @@
   TargetDepAttrs.clear();
   Alignment.reset();
   StackAlignment.reset();
+  MaxObjSizeBytes = 0;
   DerefBytes = DerefOrNullBytes = 0;
   AllocSizeArgs = 0;
   ByValType = nullptr;
@@ -1578,6 +1621,8 @@
     ByRefType = Attr.getValueAsType();
   else if (Kind == Attribute::Preallocated)
     PreallocatedType = Attr.getValueAsType();
+  else if (Kind == Attribute::MaxObjSize)
+    MaxObjSizeBytes = Attr.getMaxObjSizeBytes();
   else if (Kind == Attribute::Dereferenceable)
     DerefBytes = Attr.getDereferenceableBytes();
   else if (Kind == Attribute::DereferenceableOrNull)
@@ -1606,6 +1651,8 @@
     ByRefType = nullptr;
   else if (Val == Attribute::Preallocated)
     PreallocatedType = nullptr;
+  else if (Val == Attribute::MaxObjSize)
+    MaxObjSizeBytes = 0;
   else if (Val == Attribute::Dereferenceable)
     DerefBytes = 0;
   else if (Val == Attribute::DereferenceableOrNull)
@@ -1655,6 +1702,15 @@
   return *this;
 }
 
+AttrBuilder &AttrBuilder::addMaxObjSizeAttr(uint64_t Bytes) {
+  if (Bytes == 0U)
+    return *this;
+
+  Attrs[Attribute::MaxObjSize] = true;
+  MaxObjSizeBytes = Bytes;
+  return *this;
+}
+
 AttrBuilder &AttrBuilder::addDereferenceableAttr(uint64_t Bytes) {
   if (Bytes == 0) return *this;
 
@@ -1714,6 +1770,9 @@
   if (!StackAlignment)
     StackAlignment = B.StackAlignment;
 
+  if (MaxObjSizeBytes == 0)
+    MaxObjSizeBytes = B.MaxObjSizeBytes;
+
   if (!DerefBytes)
     DerefBytes = B.DerefBytes;
 
@@ -1748,6 +1807,9 @@
   if (B.StackAlignment)
     StackAlignment.reset();
 
+  if (B.MaxObjSizeBytes == 0)
+    MaxObjSizeBytes = 0;
+
   if (B.DerefBytes)
     DerefBytes = 0;
 
@@ -1826,7 +1888,8 @@
 
   return Alignment == B.Alignment && StackAlignment == B.StackAlignment &&
          DerefBytes == B.DerefBytes && ByValType == B.ByValType &&
-         ByRefType == B.ByRefType && PreallocatedType == B.PreallocatedType;
+         ByRefType == B.ByRefType && PreallocatedType == B.PreallocatedType &&
+         MaxObjSizeBytes == B.MaxObjSizeBytes;
 }
 
 //===----------------------------------------------------------------------===//
@@ -1848,6 +1911,7 @@
         .addAttribute(Attribute::NoAlias)
         .addAttribute(Attribute::NoCapture)
         .addAttribute(Attribute::NonNull)
+        .addMaxObjSizeAttr(1)            // the int here is ignored
         .addDereferenceableAttr(1)       // the int here is ignored
         .addDereferenceableOrNullAttr(1) // the int here is ignored
         .addAttribute(Attribute::ReadNone)
diff --git a/llvm/lib/IR/Function.cpp b/llvm/lib/IR/Function.cpp
--- a/llvm/lib/IR/Function.cpp
+++ b/llvm/lib/IR/Function.cpp
@@ -201,6 +201,11 @@
   return getParent()->getParamByRefType(getArgNo());
 }
 
+uint64_t Argument::getMaxObjSizeBytes() const {
+  assert(getType()->isPointerTy() && "Only pointers have maxobjsize bytes");
+  return getParent()->getParamMaxObjSizeBytes(getArgNo());
+}
+
 uint64_t Argument::getDereferenceableBytes() const {
   assert(getType()->isPointerTy() &&
          "Only pointers have dereferenceable bytes");
diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp
--- a/llvm/lib/IR/Value.cpp
+++ b/llvm/lib/IR/Value.cpp
@@ -704,6 +704,31 @@
   return stripPointerCastsAndOffsets<PSK_InBounds>(this, Func);
 }
 
+uint64_t Value::getPointerMaxObjSizeBytes(const DataLayout &DL) const {
+  assert(getType()->isPointerTy() && "must be pointer");
+
+  uint64_t MaxObjSizeBytes = ~0U;
+  if (const Argument *A = dyn_cast<Argument>(this)) {
+    MaxObjSizeBytes = A->getMaxObjSizeBytes();
+    if ((A->hasByValAttr() || A->hasStructRetAttr())) {
+      Type *PT = cast<PointerType>(A->getType())->getElementType();
+      if (PT->isSized())
+        MaxObjSizeBytes =
+            std::min(MaxObjSizeBytes, uint64_t(DL.getTypeStoreSize(PT)));
+    }
+  } else if (const auto *Call = dyn_cast<CallBase>(this)) {
+    MaxObjSizeBytes = Call->getMaxObjSizeBytes(AttributeList::ReturnIndex);
+  } else if (const auto *AI = dyn_cast<AllocaInst>(this)) {
+    if (!AI->isArrayAllocation()) {
+      MaxObjSizeBytes = DL.getTypeStoreSize(AI->getAllocatedType());
+    }
+  } else if (const auto *GV = dyn_cast<GlobalVariable>(this)) {
+    if (GV->getValueType()->isSized())
+      MaxObjSizeBytes = DL.getTypeStoreSize(GV->getValueType());
+  }
+  return MaxObjSizeBytes;
+}
+
 uint64_t Value::getPointerDereferenceableBytes(const DataLayout &DL,
                                                bool &CanBeNull) const {
   assert(getType()->isPointerTy() && "must be pointer");
diff --git a/llvm/lib/Transforms/IPO/Attributor.cpp b/llvm/lib/Transforms/IPO/Attributor.cpp
--- a/llvm/lib/Transforms/IPO/Attributor.cpp
+++ b/llvm/lib/Transforms/IPO/Attributor.cpp
@@ -153,6 +153,8 @@
   if (!Old.isIntAttribute())
     return true;
 
+  if (New.getKindAsEnum() == Attribute::MaxObjSize)
+    return Old.getValueAsInt() <= New.getValueAsInt();
   return Old.getValueAsInt() >= New.getValueAsInt();
 }
 
@@ -2019,6 +2021,9 @@
       // Every function with pointer return type might be marked
       // dereferenceable.
       getOrCreateAAFor<AADereferenceable>(RetPos);
+
+      // Every argument with pointer type might be marked with maxobjsize.
+      getOrCreateAAFor<AAMaxObjSize>(RetPos);
     }
   }
 
@@ -2059,6 +2064,9 @@
 
       // Every argument with pointer type might be privatizable (or promotable)
       getOrCreateAAFor<AAPrivatizablePtr>(ArgPos);
+
+      // Every argument with pointer type might be marked with maxobjsize.
+      getOrCreateAAFor<AAMaxObjSize>(ArgPos);
     }
   }
 
@@ -2128,6 +2136,9 @@
 
       // Call site argument attribute "nofree".
       getOrCreateAAFor<AANoFree>(CBArgPos);
+
+      // Call site argument attribute "maxobjsize"
+      getOrCreateAAFor<AAMaxObjSize>(CBArgPos);
     }
     return true;
   };
diff --git a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
--- a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -118,6 +118,7 @@
 PIPE_OPERATOR(AAReturnedValues)
 PIPE_OPERATOR(AANonNull)
 PIPE_OPERATOR(AANoAlias)
+PIPE_OPERATOR(AAMaxObjSize)
 PIPE_OPERATOR(AADereferenceable)
 PIPE_OPERATOR(AAAlign)
 PIPE_OPERATOR(AANoCapture)
@@ -3669,6 +3670,173 @@
   }
 };
 
+// ------------------------ MaxObjSize Attribute ----------------------------
+//
+template <>
+ChangeStatus clampStateAndIndicateChange<MaxObjState>(MaxObjState &S,
+                                                      const MaxObjState &R) {
+  ChangeStatus CS0 =
+      clampStateAndIndicateChange(S.MaxObjSizeState, R.MaxObjSizeState);
+  ChangeStatus CS1 =
+      clampStateAndIndicateChange(S.ResizableState, R.ResizableState);
+  return CS0 | CS1;
+}
+
+struct AAMaxObjSizeImpl : AAMaxObjSize {
+  AAMaxObjSizeImpl(const IRPosition &IRP, Attributor &A)
+      : AAMaxObjSize(IRP, A) {}
+
+  void getDeducedAttributes(LLVMContext &Ctx,
+                            SmallVectorImpl<Attribute> &Attrs) const override {
+    if (getAssumedMaxObjSize() == 0 || getAssumedMaxObjSize() == ~0U)
+      return;
+    Attrs.emplace_back(
+        Attribute::getWithMaxObjSizeBytes(Ctx, getAssumedMaxObjSize()));
+  }
+
+  /// See AbstractAttribute::getAsStr().
+  const std::string getAsStr() const override {
+    return getAssumedMaxObjSize() != ~0U
+               ? ("maxobjsize<" + std::to_string(getKnownMaxObjSize()) + "-" +
+                  std::to_string(getAssumedMaxObjSize()) + ">")
+               : "unknown-maxobjsize";
+  }
+};
+
+/// MaxObjSize attribute for a floating value.
+struct AAMaxObjSizeFloating : AAMaxObjSizeImpl {
+  AAMaxObjSizeFloating(const IRPosition &IRP, Attributor &A)
+      : AAMaxObjSizeImpl(IRP, A) {}
+  using State = MaxObjState;
+
+  /// See AbstractAttribute::updateImpl(...).
+  ChangeStatus updateImpl(Attributor &A) override {
+    const DataLayout &DL = A.getDataLayout();
+
+    auto StripGEPCB = [](Value *V) -> Value * {
+      auto *GEP = dyn_cast<GEPOperator>(V);
+      while (GEP) {
+        V = GEP->getPointerOperand();
+        GEP = dyn_cast<GEPOperator>(V);
+      }
+      return V;
+    };
+
+    auto VisitValueCB = [&](const Value &V, const Instruction *I, State &T,
+                            bool Stripped) -> bool {
+      const auto &AA = A.getAAFor<AAMaxObjSize>(*this, IRPosition::value(V));
+      uint64_t MaxObjSize = 0;
+      if (!Stripped && this == &AA) {
+        const auto &CaptureAA = A.getAAFor<AANoCapture>(*this, IRPosition::value(V));
+        MaxObjSize = V.getPointerMaxObjSizeBytes(DL);
+        if (isa<AllocaInst>(V) || isa<GlobalValue>(&V)) {
+          T.MaxObjSizeState.takeAssumedMaximum(
+              std::min(~uint64_t(0), MaxObjSize));
+          T.MaxObjSizeState.takeKnownMinimum(
+              std::min(~uint64_t(0), MaxObjSize));
+
+          T.indicatePessimisticFixpoint();
+          T.ResizableState.indicateOptimisticFixpoint();
+        } else if (!CaptureAA.isKnownNoCapture()) {
+          T.ResizableState.indicatePessimisticFixpoint();
+        } else {
+          T.MaxObjSizeState.takeKnownMinimum(
+              std::min(~uint64_t(0), MaxObjSize));
+          T.indicatePessimisticFixpoint();
+        }
+      } else {
+        const State &DS = AA.getState();
+        MaxObjSize = DS.MaxObjSizeState.getAssumed();
+        T.MaxObjSizeState.takeAssumedMaximum(
+            std::min(~uint64_t(0), MaxObjSize));
+      }
+
+      return T.isValidState();
+    };
+
+    State T;
+    if (!genericValueTraversal<AAMaxObjSize, State>(A, getIRPosition(), *this,
+                                                    T, VisitValueCB, getCtxI(),
+                                                    true, 16, StripGEPCB))
+      return getState().indicatePessimisticFixpoint();
+
+    return clampStateAndIndicateChange(getState(), T);
+  }
+
+  /// See AbstractAttribute::trackStatistics()
+  void trackStatistics() const override {
+    STATS_DECLTRACK_FLOATING_ATTR(maxobjsize)
+  }
+};
+
+/// MaxObjSize attribute for function return value.
+struct AAMaxObjSizeReturned final
+    : AAReturnedFromReturnedValues<AAMaxObjSize, AAMaxObjSizeImpl> {
+  AAMaxObjSizeReturned(const IRPosition &IRP, Attributor &A)
+      : AAReturnedFromReturnedValues<AAMaxObjSize, AAMaxObjSizeImpl>(IRP, A) {}
+
+  /// See AbstractAttribute::trackStatistics()
+  void trackStatistics() const override { STATS_DECLTRACK_FNRET_ATTR(aligned) }
+};
+
+/// MaxObjSize attribute for function argument.
+struct AAMaxObjSizeArgument final
+    : AAArgumentFromCallSiteArguments<AAMaxObjSize, AAMaxObjSizeImpl> {
+  AAMaxObjSizeArgument(const IRPosition &IRP, Attributor &A)
+      : AAArgumentFromCallSiteArguments<AAMaxObjSize, AAMaxObjSizeImpl>(IRP,
+                                                                        A) {}
+
+  /// See AbstractAttribute::initialize(...).
+  virtual void initialize(Attributor &A) override {
+    if (hasAttr(Attribute::ByVal)) {
+      getState().MaxObjSizeState.takeKnownMinimum(
+          getAssociatedValue().getPointerMaxObjSizeBytes(A.getDataLayout()));
+      getState().indicatePessimisticFixpoint();
+      return;
+    }
+    AAArgumentFromCallSiteArguments<AAMaxObjSize, AAMaxObjSizeImpl>::initialize(
+        A);
+  }
+
+  /// See AbstractAttribute::trackStatistics()
+  void trackStatistics() const override { STATS_DECLTRACK_ARG_ATTR(aligned) }
+};
+
+struct AAMaxObjSizeCallSiteArgument final : AAMaxObjSizeFloating {
+  AAMaxObjSizeCallSiteArgument(const IRPosition &IRP, Attributor &A)
+      : AAMaxObjSizeFloating(IRP, A) {}
+
+  /// See AbstractAttribute::trackStatistics()
+  void trackStatistics() const override { STATS_DECLTRACK_CSARG_ATTR(aligned) }
+};
+
+/// MaxObjSize attribute deduction for a call site return value.
+struct AAMaxObjSizeCallSiteReturned final
+    : AACallSiteReturnedFromReturned<AAMaxObjSize, AAMaxObjSizeImpl> {
+  using Base = AACallSiteReturnedFromReturned<AAMaxObjSize, AAMaxObjSizeImpl>;
+  AAMaxObjSizeCallSiteReturned(const IRPosition &IRP, Attributor &A)
+      : Base(IRP, A) {}
+
+  /// See AbstractAttribute::updateImpl(...).
+  ChangeStatus updateImpl(Attributor &A) override {
+    // TODO: Once we have call site specific value information we can provide
+    //       call site specific liveness information and then it makes
+    //       sense to specialize attributes for call sites instead of
+    //       redirecting requests to the callee.
+    Function *F = getAssociatedFunction();
+    const IRPosition &FnPos = IRPosition::returned(*F);
+    auto &FnAA = A.getAAFor<AAMaxObjSize>(*this, FnPos);
+    return clampStateAndIndicateChange(
+        getState(),
+        static_cast<const AAMaxObjSize::StateType &>(FnAA.getState()));
+  }
+
+  /// See AbstractAttribute::trackStatistics()
+  void trackStatistics() const override {
+    STATS_DECLTRACK_CSRET_ATTR(maxobjsize);
+  }
+};
+
 // ------------------------ Align Argument Attribute ------------------------
 
 static unsigned getKnownAlignForUse(Attributor &A,
@@ -7960,6 +8128,7 @@
 const char AANoReturn::ID = 0;
 const char AAIsDead::ID = 0;
 const char AADereferenceable::ID = 0;
+const char AAMaxObjSize::ID = 0;
 const char AAAlign::ID = 0;
 const char AANoCapture::ID = 0;
 const char AAValueSimplify::ID = 0;
@@ -8076,6 +8245,7 @@
 CREATE_VALUE_ABSTRACT_ATTRIBUTE_FOR_POSITION(AANoAlias)
 CREATE_VALUE_ABSTRACT_ATTRIBUTE_FOR_POSITION(AAPrivatizablePtr)
 CREATE_VALUE_ABSTRACT_ATTRIBUTE_FOR_POSITION(AADereferenceable)
+CREATE_VALUE_ABSTRACT_ATTRIBUTE_FOR_POSITION(AAMaxObjSize)
 CREATE_VALUE_ABSTRACT_ATTRIBUTE_FOR_POSITION(AAAlign)
 CREATE_VALUE_ABSTRACT_ATTRIBUTE_FOR_POSITION(AANoCapture)
 CREATE_VALUE_ABSTRACT_ATTRIBUTE_FOR_POSITION(AAValueConstantRange)
diff --git a/llvm/lib/Transforms/Utils/CodeExtractor.cpp b/llvm/lib/Transforms/Utils/CodeExtractor.cpp
--- a/llvm/lib/Transforms/Utils/CodeExtractor.cpp
+++ b/llvm/lib/Transforms/Utils/CodeExtractor.cpp
@@ -862,6 +862,7 @@
       case Attribute::Builtin:
       case Attribute::ByVal:
       case Attribute::Convergent:
+      case Attribute::MaxObjSize:
       case Attribute::Dereferenceable:
       case Attribute::DereferenceableOrNull:
       case Attribute::InAlloca:
diff --git a/llvm/test/Bitcode/attributes.ll b/llvm/test/Bitcode/attributes.ll
--- a/llvm/test/Bitcode/attributes.ll
+++ b/llvm/test/Bitcode/attributes.ll
@@ -398,6 +398,12 @@
   ret void
 }
 
+; CHECK: define maxobjsize(8) i32* @f68(i32* maxobjsize(4) %0)
+define maxobjsize(8) i32* @f68(i32* maxobjsize(4))
+{
+  ret i32* %0;
+}
+
 ; CHECK: attributes #0 = { noreturn }
 ; CHECK: attributes #1 = { nounwind }
 ; CHECK: attributes #2 = { readnone }
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/2008-02-01-ReturnAttrs.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/2008-02-01-ReturnAttrs.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/2008-02-01-ReturnAttrs.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/2008-02-01-ReturnAttrs.ll
@@ -7,7 +7,7 @@
 define internal i32 @deref(i32* %x) nounwind {
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind readonly willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@deref
-; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT_OPM-NEXT:  entry:
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = load i32, i32* [[X]], align 4
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[TMP2]]
@@ -23,7 +23,7 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@deref
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC_OPM-NEXT:  entry:
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = load i32, i32* [[X]], align 4
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[TMP2]]
@@ -49,7 +49,7 @@
 ; IS__TUNIT_OPM-NEXT:  entry:
 ; IS__TUNIT_OPM-NEXT:    [[X_ADDR:%.*]] = alloca i32, align 4
 ; IS__TUNIT_OPM-NEXT:    store i32 [[X]], i32* [[X_ADDR]], align 4
-; IS__TUNIT_OPM-NEXT:    [[TMP1:%.*]] = call i32 @deref(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X_ADDR]]) [[ATTR2:#.*]]
+; IS__TUNIT_OPM-NEXT:    [[TMP1:%.*]] = call i32 @deref(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X_ADDR]]) [[ATTR2:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[TMP1]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
@@ -68,7 +68,7 @@
 ; IS__CGSCC_OPM-NEXT:  entry:
 ; IS__CGSCC_OPM-NEXT:    [[X_ADDR:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 [[X]], i32* [[X_ADDR]], align 4
-; IS__CGSCC_OPM-NEXT:    [[TMP1:%.*]] = call i32 @deref(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X_ADDR]]) [[ATTR2:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[TMP1:%.*]] = call i32 @deref(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X_ADDR]]) [[ATTR2:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[TMP1]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/attributes.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/attributes.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/attributes.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/attributes.ll
@@ -11,7 +11,7 @@
 define internal fastcc void @no_promote_avx2(<4 x i64>* %arg, <4 x i64>* readonly %arg1) #0 {
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@no_promote_avx2
-; IS________OPM-SAME: (<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[ARG:%.*]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[ARG1:%.*]]) [[ATTR0:#.*]] {
+; IS________OPM-SAME: (<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[ARG:%.*]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[ARG1:%.*]]) [[ATTR0:#.*]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <4 x i64>, <4 x i64>* [[ARG1]], align 32
 ; IS________OPM-NEXT:    store <4 x i64> [[TMP]], <4 x i64>* [[ARG]], align 32
@@ -19,7 +19,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@no_promote_avx2
-; IS________NPM-SAME: (<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[ARG:%.*]], <4 x i64>* noalias nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[ARG1:%.*]]) [[ATTR0:#.*]] {
+; IS________NPM-SAME: (<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[ARG:%.*]], <4 x i64>* noalias nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[ARG1:%.*]]) [[ATTR0:#.*]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[TMP:%.*]] = load <4 x i64>, <4 x i64>* [[ARG1]], align 32
 ; IS________NPM-NEXT:    store <4 x i64> [[TMP]], <4 x i64>* [[ARG]], align 32
@@ -39,8 +39,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[TMP]]) [[ATTR5:#.*]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[TMP]]) [[ATTR5:#.*]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__TUNIT_OPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -52,8 +52,8 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
-; IS__TUNIT_NPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64>* noalias nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[TMP]]) [[ATTR5:#.*]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64>* noalias nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[TMP]]) [[ATTR5:#.*]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__TUNIT_NPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -65,8 +65,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[TMP]]) [[ATTR5:#.*]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[TMP]]) [[ATTR5:#.*]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__CGSCC_OPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -78,8 +78,8 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
-; IS__CGSCC_NPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64>* noalias nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[TMP]]) [[ATTR5:#.*]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4:#.*]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @no_promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64>* noalias nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[TMP]]) [[ATTR5:#.*]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__CGSCC_NPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -98,7 +98,7 @@
 define internal fastcc void @promote_avx2(<4 x i64>* %arg, <4 x i64>* readonly %arg1) #0 {
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@promote_avx2
-; IS________OPM-SAME: (<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[ARG:%.*]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[ARG1:%.*]]) [[ATTR0]] {
+; IS________OPM-SAME: (<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[ARG:%.*]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[ARG1:%.*]]) [[ATTR0]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <4 x i64>, <4 x i64>* [[ARG1]], align 32
 ; IS________OPM-NEXT:    store <4 x i64> [[TMP]], <4 x i64>* [[ARG]], align 32
@@ -106,7 +106,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@promote_avx2
-; IS________NPM-SAME: (<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[ARG:%.*]], <4 x i64> [[TMP0:%.*]]) [[ATTR0]] {
+; IS________NPM-SAME: (<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[ARG:%.*]], <4 x i64> [[TMP0:%.*]]) [[ATTR0]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[ARG1_PRIV:%.*]] = alloca <4 x i64>, align 32
 ; IS________NPM-NEXT:    store <4 x i64> [[TMP0]], <4 x i64>* [[ARG1_PRIV]], align 32
@@ -128,8 +128,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[TMP]]) [[ATTR5]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[TMP]]) [[ATTR5]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__TUNIT_OPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -141,9 +141,9 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load <4 x i64>, <4 x i64>* [[TMP]], align 32
-; IS__TUNIT_NPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64> [[TMP0]]) [[ATTR5]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64> [[TMP0]]) [[ATTR5]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__TUNIT_NPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -155,8 +155,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) [[TMP]]) [[ATTR5]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64>* nocapture nofree noundef nonnull readonly align 32 dereferenceable(32) maxobjsize(32) [[TMP]]) [[ATTR5]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__CGSCC_OPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -168,9 +168,9 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <4 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <4 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR4]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = load <4 x i64>, <4 x i64>* [[TMP]], align 32
-; IS__CGSCC_NPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) [[TMP2]], <4 x i64> [[TMP0]]) [[ATTR5]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @promote_avx2(<4 x i64>* noalias nocapture nofree noundef nonnull writeonly align 32 dereferenceable(32) maxobjsize(32) [[TMP2]], <4 x i64> [[TMP0]]) [[ATTR5]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <4 x i64>, <4 x i64>* [[TMP2]], align 32
 ; IS__CGSCC_NPM-NEXT:    store <4 x i64> [[TMP4]], <4 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/min-legal-vector-width.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/min-legal-vector-width.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/min-legal-vector-width.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/min-legal-vector-width.ll
@@ -13,7 +13,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR0:#.*]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR0:#.*]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -21,7 +21,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR0:#.*]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR0:#.*]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[ARG1_PRIV:%.*]] = alloca <8 x i64>, align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP0]], <8 x i64>* [[ARG1_PRIV]], align 64
@@ -36,7 +36,6 @@
 }
 
 define void @avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* %arg) #0 {
-;
 ; IS__TUNIT_OPM: Function Attrs: argmemonly inlinehint norecurse nosync nounwind uwtable willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@avx512_legal512_prefer512_call_avx512_legal512_prefer512
 ; IS__TUNIT_OPM-SAME: (<8 x i64>* nocapture writeonly [[ARG:%.*]]) [[ATTR1:#.*]] {
@@ -44,8 +43,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12:#.*]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12:#.*]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -57,9 +56,9 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12:#.*]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12:#.*]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -71,8 +70,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12:#.*]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12:#.*]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -84,9 +83,9 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11:#.*]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12:#.*]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12:#.*]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -107,7 +106,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR2:#.*]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR2:#.*]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -115,7 +114,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR2:#.*]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR2:#.*]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[ARG1_PRIV:%.*]] = alloca <8 x i64>, align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP0]], <8 x i64>* [[ARG1_PRIV]], align 64
@@ -138,8 +137,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -151,9 +150,9 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -165,8 +164,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -178,9 +177,9 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -201,7 +200,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR2]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR2]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -209,7 +208,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR2]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR2]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[ARG1_PRIV:%.*]] = alloca <8 x i64>, align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP0]], <8 x i64>* [[ARG1_PRIV]], align 64
@@ -232,8 +231,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -245,9 +244,9 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -259,8 +258,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -272,9 +271,9 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer512_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -295,7 +294,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR0]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR0]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -303,7 +302,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR0]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR0]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[ARG1_PRIV:%.*]] = alloca <8 x i64>, align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP0]], <8 x i64>* [[ARG1_PRIV]], align 64
@@ -326,8 +325,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -339,9 +338,9 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -353,8 +352,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -366,9 +365,9 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal512_prefer512(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -389,7 +388,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR2]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR2]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -397,7 +396,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR2]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR2]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -418,8 +417,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -431,8 +430,8 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -444,8 +443,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -457,8 +456,8 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal256_prefer256_call_avx512_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -479,7 +478,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR5:#.*]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR5:#.*]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -487,7 +486,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR5:#.*]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR5:#.*]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -508,8 +507,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -521,8 +520,8 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -534,8 +533,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -547,8 +546,8 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx512_legal512_prefer256_call_avx512_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* noalias nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -569,7 +568,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR6:#.*]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR6:#.*]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -577,7 +576,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR6:#.*]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR6:#.*]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[ARG1_PRIV:%.*]] = alloca <8 x i64>, align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP0]], <8 x i64>* [[ARG1_PRIV]], align 64
@@ -600,8 +599,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -613,9 +612,9 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -627,8 +626,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -640,9 +639,9 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx2_legal256_prefer256_call_avx2_legal512_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
@@ -663,7 +662,7 @@
 ;
 ; IS________OPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________OPM-LABEL: define {{[^@]+}}@callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256
-; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[ARG1:%.*]]) [[ATTR8:#.*]] {
+; IS________OPM-SAME: (<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[ARG1:%.*]]) [[ATTR8:#.*]] {
 ; IS________OPM-NEXT:  bb:
 ; IS________OPM-NEXT:    [[TMP:%.*]] = load <8 x i64>, <8 x i64>* [[ARG1]], align 64
 ; IS________OPM-NEXT:    store <8 x i64> [[TMP]], <8 x i64>* [[ARG]], align 64
@@ -671,7 +670,7 @@
 ;
 ; IS________NPM: Function Attrs: argmemonly inlinehint nofree norecurse nosync nounwind uwtable willreturn
 ; IS________NPM-LABEL: define {{[^@]+}}@callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256
-; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR8:#.*]] {
+; IS________NPM-SAME: (<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[ARG:%.*]], <8 x i64> [[TMP0:%.*]]) [[ATTR8:#.*]] {
 ; IS________NPM-NEXT:  bb:
 ; IS________NPM-NEXT:    [[ARG1_PRIV:%.*]] = alloca <8 x i64>, align 64
 ; IS________NPM-NEXT:    store <8 x i64> [[TMP0]], <8 x i64>* [[ARG1_PRIV]], align 64
@@ -694,8 +693,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__TUNIT_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_OPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_OPM-NEXT:    ret void
@@ -707,9 +706,9 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__TUNIT_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__TUNIT_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__TUNIT_NPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__TUNIT_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__TUNIT_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__TUNIT_NPM-NEXT:    ret void
@@ -721,8 +720,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
-; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) [[TMP]]) [[ATTR12]]
+; IS__CGSCC_OPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_OPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64>* nocapture nofree noundef nonnull readonly align 64 dereferenceable(64) maxobjsize(64) [[TMP]]) [[ATTR12]]
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_OPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_OPM-NEXT:    ret void
@@ -734,9 +733,9 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP2:%.*]] = alloca <8 x i64>, align 32
 ; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = bitcast <8 x i64>* [[TMP]] to i8*
-; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
+; IS__CGSCC_NPM-NEXT:    call void @llvm.memset.p0i8.i64(i8* nocapture noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP3]], i8 noundef 0, i64 noundef 32, i1 noundef false) [[ATTR11]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = load <8 x i64>, <8 x i64>* [[TMP]], align 64
-; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
+; IS__CGSCC_NPM-NEXT:    call fastcc void @callee_avx2_legal512_prefer256_call_avx2_legal256_prefer256(<8 x i64>* noalias nocapture nofree noundef nonnull writeonly align 64 dereferenceable(64) maxobjsize(64) [[TMP2]], <8 x i64> [[TMP0]]) [[ATTR12]]
 ; IS__CGSCC_NPM-NEXT:    [[TMP4:%.*]] = load <8 x i64>, <8 x i64>* [[TMP2]], align 64
 ; IS__CGSCC_NPM-NEXT:    store <8 x i64> [[TMP4]], <8 x i64>* [[ARG]], align 2
 ; IS__CGSCC_NPM-NEXT:    ret void
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/thiscall.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/thiscall.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/thiscall.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/X86/thiscall.ll
@@ -16,13 +16,13 @@
 
 define internal x86_thiscallcc void @internalfun(%struct.a* %this, <{ %struct.a }>* inalloca) {
 ; CHECK-LABEL: define {{[^@]+}}@internalfun
-; CHECK-SAME: (%struct.a* noalias nocapture nofree readnone [[THIS:%.*]], <{ [[STRUCT_A:%.*]] }>* inalloca noundef nonnull align 4 dereferenceable(1) [[TMP0:%.*]]) {
+; CHECK-SAME: (%struct.a* noalias nocapture nofree readnone [[THIS:%.*]], <{ [[STRUCT_A:%.*]] }>* inalloca noundef nonnull align 4 dereferenceable(1) maxobjsize(1) [[TMP0:%.*]]) {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[A:%.*]] = getelementptr inbounds <{ [[STRUCT_A]] }>, <{ [[STRUCT_A]] }>* [[TMP0]], i32 0, i32 0
 ; CHECK-NEXT:    [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_A]] }>, align 4
 ; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds <{ [[STRUCT_A]] }>, <{ [[STRUCT_A]] }>* [[ARGMEM]], i32 0, i32 0
-; CHECK-NEXT:    [[CALL:%.*]] = call x86_thiscallcc %struct.a* @copy_ctor(%struct.a* noundef nonnull align 4 dereferenceable(1) [[TMP1]], %struct.a* noundef nonnull align 4 dereferenceable(1) [[A]])
-; CHECK-NEXT:    call void @ext(<{ [[STRUCT_A]] }>* inalloca noundef nonnull align 4 dereferenceable(1) [[ARGMEM]])
+; CHECK-NEXT:    [[CALL:%.*]] = call x86_thiscallcc %struct.a* @copy_ctor(%struct.a* noundef nonnull align 4 dereferenceable(1) maxobjsize(1) [[TMP1]], %struct.a* noundef nonnull align 4 dereferenceable(1) maxobjsize(1) [[A]])
+; CHECK-NEXT:    call void @ext(<{ [[STRUCT_A]] }>* inalloca noundef nonnull align 4 dereferenceable(1) maxobjsize(1) [[ARGMEM]])
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -40,7 +40,7 @@
 ; CHECK-SAME: (%struct.a* nocapture nofree readnone [[A:%.*]]) {
 ; CHECK-NEXT:    [[INALLOCA_SAVE:%.*]] = tail call i8* @llvm.stacksave()
 ; CHECK-NEXT:    [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_A:%.*]] }>, align 4
-; CHECK-NEXT:    call x86_thiscallcc void @internalfun(%struct.a* noalias nocapture nofree readnone undef, <{ [[STRUCT_A]] }>* inalloca noundef nonnull align 4 dereferenceable(1) [[ARGMEM]])
+; CHECK-NEXT:    call x86_thiscallcc void @internalfun(%struct.a* noalias nocapture nofree readnone undef, <{ [[STRUCT_A]] }>* inalloca noundef nonnull align 4 dereferenceable(1) maxobjsize(1) [[ARGMEM]])
 ; CHECK-NEXT:    call void @llvm.stackrestore(i8* [[INALLOCA_SAVE]])
 ; CHECK-NEXT:    ret void
 ;
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/alignment.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/alignment.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/alignment.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/alignment.ll
@@ -8,7 +8,7 @@
 ; IS________OPM-LABEL: define {{[^@]+}}@f() {
 ; IS________OPM-NEXT:  entry:
 ; IS________OPM-NEXT:    [[A:%.*]] = alloca i32, align 1
-; IS________OPM-NEXT:    call void @g(i32* noalias nocapture noundef nonnull readonly dereferenceable(4) [[A]])
+; IS________OPM-NEXT:    call void @g(i32* noalias nocapture noundef nonnull readonly dereferenceable(4) maxobjsize(4) [[A]])
 ; IS________OPM-NEXT:    ret void
 ;
 ; IS________NPM-LABEL: define {{[^@]+}}@f() {
@@ -26,7 +26,7 @@
 
 define internal void @g(i32* %a) {
 ; IS________OPM-LABEL: define {{[^@]+}}@g
-; IS________OPM-SAME: (i32* noalias nocapture noundef nonnull readonly dereferenceable(4) [[A:%.*]]) {
+; IS________OPM-SAME: (i32* noalias nocapture noundef nonnull readonly dereferenceable(4) maxobjsize(4) [[A:%.*]]) {
 ; IS________OPM-NEXT:    [[AA:%.*]] = load i32, i32* [[A]], align 1
 ; IS________OPM-NEXT:    call void @z(i32 [[AA]])
 ; IS________OPM-NEXT:    ret void
@@ -59,7 +59,7 @@
 define internal i32 @test(i32* %X, i64* %Y) {
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind readonly willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@test
-; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X:%.*]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[Y:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X:%.*]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[Y:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[A:%.*]] = load i32, i32* [[X]], align 4
 ; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = load i64, i64* [[Y]], align 8
 ; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = add i32 [[A]], 1
@@ -91,7 +91,7 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@test
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X:%.*]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[Y:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X:%.*]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[Y:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = load i32, i32* [[X]], align 4
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = load i64, i64* [[Y]], align 8
 ; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = add i32 [[A]], 1
@@ -136,10 +136,10 @@
 define internal i32 @caller(i32* %A) {
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@caller
-; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A:%.*]]) [[ATTR1:#.*]] {
+; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]]) [[ATTR1:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i64, align 8
 ; IS__TUNIT_OPM-NEXT:    store i64 1, i64* [[B]], align 8
-; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[B]]) [[ATTR3:#.*]]
+; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[B]]) [[ATTR3:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[C]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: argmemonly nofree nosync nounwind willreturn
@@ -156,10 +156,10 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@caller
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A:%.*]]) [[ATTR1:#.*]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]]) [[ATTR1:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i64, align 8
 ; IS__CGSCC_OPM-NEXT:    store i64 1, i64* [[B]], align 8
-; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[B]]) [[ATTR3:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A]], i64* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[B]]) [[ATTR3:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[C]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -186,7 +186,7 @@
 ; IS__TUNIT_OPM-SAME: () [[ATTR2:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__TUNIT_OPM-NEXT:    store i32 2, i32* [[B]], align 4
-; IS__TUNIT_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR4:#.*]]
+; IS__TUNIT_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR4:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[X]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone
@@ -203,7 +203,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR2:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 2, i32* [[B]], align 4
-; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR4:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR4:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[X]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/attrs.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/attrs.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/attrs.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/attrs.ll
@@ -100,7 +100,7 @@
 ; IS__TUNIT_OPM-NEXT:    store i32 1, i32* [[TMP1]], align 8
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
 ; IS__TUNIT_OPM-NEXT:    store i64 2, i64* [[TMP4]], align 4
-; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(12) [[S]], i32* nocapture nofree readonly byval align 4 [[X]], i32 noundef zeroext 0) [[ATTR0]]
+; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(12) maxobjsize(12) [[S]], i32* nocapture nofree readonly byval align 4 [[X]], i32 noundef zeroext 0) [[ATTR0]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[C]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
@@ -129,7 +129,7 @@
 ; IS__CGSCC_OPM-NEXT:    store i32 1, i32* [[TMP1]], align 8
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
 ; IS__CGSCC_OPM-NEXT:    store i64 2, i64* [[TMP4]], align 4
-; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readnone byval align 8 dereferenceable(12) [[S]], i32* noalias nocapture nofree nonnull readnone byval align 4 dereferenceable(4) [[X]]) [[ATTR1:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readnone byval align 8 dereferenceable(12) maxobjsize(12) [[S]], i32* noalias nocapture nofree nonnull readnone byval align 4 dereferenceable(4) [[X]]) [[ATTR1:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[C]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/basictest.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/basictest.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/basictest.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/basictest.ll
@@ -8,7 +8,7 @@
 define internal i32 @test(i32* %X, i32* %Y) {
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind readonly willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@test
-; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[Y:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[Y:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[A:%.*]] = load i32, i32* [[X]], align 4
 ; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = load i32, i32* [[Y]], align 4
 ; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = add i32 [[A]], [[B]]
@@ -28,7 +28,7 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@test
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[X:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[Y:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[Y:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = load i32, i32* [[X]], align 4
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = load i32, i32* [[Y]], align 4
 ; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = add i32 [[A]], [[B]]
@@ -55,10 +55,10 @@
 define internal i32 @caller(i32* %B) {
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@caller
-; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B:%.*]]) [[ATTR1:#.*]] {
+; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR1:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__TUNIT_OPM-NEXT:    store i32 1, i32* [[A]], align 4
-; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR3:#.*]]
+; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR3:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[C]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: argmemonly nofree nosync nounwind willreturn
@@ -75,10 +75,10 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@caller
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B:%.*]]) [[ATTR1:#.*]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR1:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 1, i32* [[A]], align 4
-; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR3:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR3:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[C]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -105,7 +105,7 @@
 ; IS__TUNIT_OPM-SAME: () [[ATTR2:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__TUNIT_OPM-NEXT:    store i32 2, i32* [[B]], align 4
-; IS__TUNIT_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR4:#.*]]
+; IS__TUNIT_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR4:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[X]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone
@@ -122,7 +122,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR2:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 2, i32* [[B]], align 4
-; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR4:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR4:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[X]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/byval.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/byval.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/byval.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/byval.ll
@@ -138,8 +138,8 @@
 ; IS__TUNIT_OPM-NEXT:    store i32 1, i32* [[TMP1]], align 8
 ; IS__TUNIT_OPM-NEXT:    [[TMP4:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
 ; IS__TUNIT_OPM-NEXT:    store i64 2, i64* [[TMP4]], align 4
-; IS__TUNIT_OPM-NEXT:    [[C0:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(12) [[S]]) [[ATTR0]]
-; IS__TUNIT_OPM-NEXT:    [[C1:%.*]] = call i32 @g(%struct.ss* noalias nocapture nofree noundef nonnull readonly byval align 32 dereferenceable(12) [[S]]) [[ATTR0]]
+; IS__TUNIT_OPM-NEXT:    [[C0:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(12) maxobjsize(12) [[S]]) [[ATTR0]]
+; IS__TUNIT_OPM-NEXT:    [[C1:%.*]] = call i32 @g(%struct.ss* noalias nocapture nofree noundef nonnull readonly byval align 32 dereferenceable(12) maxobjsize(12) [[S]]) [[ATTR0]]
 ; IS__TUNIT_OPM-NEXT:    [[A:%.*]] = add i32 [[C0]], [[C1]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[A]]
 ;
@@ -174,8 +174,8 @@
 ; IS__CGSCC_OPM-NEXT:    store i32 1, i32* [[TMP1]], align 32
 ; IS__CGSCC_OPM-NEXT:    [[TMP4:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
 ; IS__CGSCC_OPM-NEXT:    store i64 2, i64* [[TMP4]], align 4
-; IS__CGSCC_OPM-NEXT:    [[C0:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readnone byval align 32 dereferenceable(12) [[S]]) [[ATTR1:#.*]]
-; IS__CGSCC_OPM-NEXT:    [[C1:%.*]] = call i32 @g(%struct.ss* noalias nocapture nofree noundef nonnull readnone byval align 32 dereferenceable(12) [[S]]) [[ATTR1]]
+; IS__CGSCC_OPM-NEXT:    [[C0:%.*]] = call i32 @f(%struct.ss* noalias nocapture nofree noundef nonnull readnone byval align 32 dereferenceable(12) maxobjsize(12) [[S]]) [[ATTR1:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[C1:%.*]] = call i32 @g(%struct.ss* noalias nocapture nofree noundef nonnull readnone byval align 32 dereferenceable(12) maxobjsize(12) [[S]]) [[ATTR1]]
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = add i32 [[C0]], [[C1]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[A]]
 ;
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/control-flow2.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/control-flow2.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/control-flow2.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/control-flow2.ll
@@ -9,7 +9,7 @@
 define internal i32 @callee(i1 %C, i32* %P) {
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind readonly willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@callee
-; IS__TUNIT_OPM-SAME: (i1 noundef [[C:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[P:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT_OPM-SAME: (i1 noundef [[C:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    br label [[F:%.*]]
 ; IS__TUNIT_OPM:       T:
 ; IS__TUNIT_OPM-NEXT:    unreachable
@@ -31,7 +31,7 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@callee
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[P:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    br label [[F:%.*]]
 ; IS__CGSCC_OPM:       T:
 ; IS__CGSCC_OPM-NEXT:    unreachable
@@ -67,7 +67,7 @@
 ; IS__TUNIT_OPM-SAME: () [[ATTR1:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__TUNIT_OPM-NEXT:    store i32 17, i32* [[A]], align 4
-; IS__TUNIT_OPM-NEXT:    [[X:%.*]] = call i32 @callee(i1 noundef false, i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A]]) [[ATTR2:#.*]]
+; IS__TUNIT_OPM-NEXT:    [[X:%.*]] = call i32 @callee(i1 noundef false, i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A]]) [[ATTR2:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[X]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
@@ -84,7 +84,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR1:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 17, i32* [[A]], align 4
-; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @callee(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A]]) [[ATTR2:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @callee(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A]]) [[ATTR2:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[X]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/crash.ll
@@ -98,13 +98,11 @@
 ; IS__TUNIT____-NEXT:  bb:
 ; IS__TUNIT____-NEXT:    unreachable
 ;
-; IS__CGSCC____: Function Attrs: nofree norecurse noreturn nosync nounwind readnone willreturn
+; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@test_inf_promote_caller
-; IS__CGSCC____-SAME: (i32 [[ARG:%.*]]) [[ATTR0]] {
+; IS__CGSCC____-SAME: (i32 [[ARG:%.*]]) [[ATTR1]] {
 ; IS__CGSCC____-NEXT:  bb:
-; IS__CGSCC____-NEXT:    [[TMP:%.*]] = alloca [[S:%.*]], align 8
-; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = alloca [[S]], align 8
-; IS__CGSCC____-NEXT:    unreachable
+; IS__CGSCC____-NEXT:    ret i32 0
 ;
 bb:
   %tmp = alloca %S
@@ -115,12 +113,6 @@
 }
 
 define internal i32 @test_inf_promote_callee(%S* %arg, %S* %arg1) {
-; IS__CGSCC____: Function Attrs: nofree norecurse noreturn nosync nounwind readnone willreturn
-; IS__CGSCC____-LABEL: define {{[^@]+}}@test_inf_promote_callee
-; IS__CGSCC____-SAME: () [[ATTR0]] {
-; IS__CGSCC____-NEXT:  bb:
-; IS__CGSCC____-NEXT:    unreachable
-;
 bb:
   %tmp = getelementptr %S, %S* %arg1, i32 0, i32 0
   %tmp2 = load %S*, %S** %tmp
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/inalloca.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/inalloca.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/inalloca.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/inalloca.ll
@@ -12,7 +12,7 @@
 define internal i32 @f(%struct.ss* inalloca  %s) {
 ; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind readonly willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@f
-; IS__TUNIT____-SAME: (%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) [[S:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT____-SAME: (%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) maxobjsize(8) [[S:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT____-NEXT:  entry:
 ; IS__TUNIT____-NEXT:    [[F0:%.*]] = getelementptr [[STRUCT_SS:%.*]], %struct.ss* [[S]], i32 0, i32 0
 ; IS__TUNIT____-NEXT:    [[F1:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
@@ -23,7 +23,7 @@
 ;
 ; IS__CGSCC____: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@f
-; IS__CGSCC____-SAME: (%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) [[S:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC____-SAME: (%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) maxobjsize(8) [[S:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC____-NEXT:  entry:
 ; IS__CGSCC____-NEXT:    [[F0:%.*]] = getelementptr [[STRUCT_SS:%.*]], %struct.ss* [[S]], i32 0, i32 0
 ; IS__CGSCC____-NEXT:    [[F1:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
@@ -51,7 +51,7 @@
 ; IS__TUNIT____-NEXT:    [[F1:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
 ; IS__TUNIT____-NEXT:    store i32 1, i32* [[F0]], align 4
 ; IS__TUNIT____-NEXT:    store i32 2, i32* [[F1]], align 4
-; IS__TUNIT____-NEXT:    [[R:%.*]] = call i32 @f(%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) [[S]]) [[ATTR2:#.*]]
+; IS__TUNIT____-NEXT:    [[R:%.*]] = call i32 @f(%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) maxobjsize(8) [[S]]) [[ATTR2:#.*]]
 ; IS__TUNIT____-NEXT:    ret i32 [[R]]
 ;
 ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -63,7 +63,7 @@
 ; IS__CGSCC____-NEXT:    [[F1:%.*]] = getelementptr [[STRUCT_SS]], %struct.ss* [[S]], i32 0, i32 1
 ; IS__CGSCC____-NEXT:    store i32 1, i32* [[F0]], align 4
 ; IS__CGSCC____-NEXT:    store i32 2, i32* [[F1]], align 4
-; IS__CGSCC____-NEXT:    [[R:%.*]] = call i32 @f(%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) [[S]]) [[ATTR2:#.*]]
+; IS__CGSCC____-NEXT:    [[R:%.*]] = call i32 @f(%struct.ss* inalloca noalias nocapture nofree noundef nonnull align 4 dereferenceable(8) maxobjsize(8) [[S]]) [[ATTR2:#.*]]
 ; IS__CGSCC____-NEXT:    ret i32 [[R]]
 ;
 entry:
@@ -78,12 +78,6 @@
 
 ; Argpromote can't promote %a because of the icmp use.
 define internal i1 @g(%struct.ss* %a, %struct.ss* inalloca %b) nounwind  {
-; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
-; IS__CGSCC____-LABEL: define {{[^@]+}}@g
-; IS__CGSCC____-SAME: (%struct.ss* noalias nocapture nofree nonnull readnone align 4 dereferenceable(8) [[A:%.*]], %struct.ss* inalloca noalias nocapture nofree nonnull writeonly align 4 dereferenceable(8) [[B:%.*]]) [[ATTR1]] {
-; IS__CGSCC____-NEXT:  entry:
-; IS__CGSCC____-NEXT:    ret i1 undef
-;
 entry:
   %c = icmp eq %struct.ss* %a, %b
   ret i1 %c
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead.ll
@@ -47,7 +47,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR1:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 1, i32* [[A]], align 4
-; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A]]) [[ATTR3:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[A]]) [[ATTR3:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 undef
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -55,7 +55,7 @@
 ; IS__CGSCC_NPM-SAME: () [[ATTR1:#.*]] {
 ; IS__CGSCC_NPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__CGSCC_NPM-NEXT:    store i32 1, i32* [[A]], align 4
-; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A]]) [[ATTR2:#.*]]
+; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[A]]) [[ATTR2:#.*]]
 ; IS__CGSCC_NPM-NEXT:    unreachable
 ;
   %A = alloca i32
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/live_called_from_dead_2.ll
@@ -44,26 +44,26 @@
 define internal i32 @caller(i32* %B) {
 ; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller
-; IS__TUNIT____-SAME: (i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT____-SAME: (i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT____-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__TUNIT____-NEXT:    store i32 1, i32* [[A]], align 4
-; IS__TUNIT____-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B]]) [[ATTR2:#.*]]
+; IS__TUNIT____-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR2:#.*]]
 ; IS__TUNIT____-NEXT:    ret i32 0
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@caller
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 1, i32* [[A]], align 4
-; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B]]) [[ATTR2:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR2:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 undef
 ;
 ; IS__CGSCC_NPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
 ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@caller
-; IS__CGSCC_NPM-SAME: (i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B:%.*]]) [[ATTR0]] {
+; IS__CGSCC_NPM-SAME: (i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR0]] {
 ; IS__CGSCC_NPM-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; IS__CGSCC_NPM-NEXT:    store i32 1, i32* [[A]], align 4
-; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B]]) [[ATTR2:#.*]]
+; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = call i32 @test(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR2:#.*]]
 ; IS__CGSCC_NPM-NEXT:    unreachable
 ;
   %A = alloca i32
@@ -78,7 +78,7 @@
 ; IS__TUNIT____-SAME: () [[ATTR1:#.*]] {
 ; IS__TUNIT____-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__TUNIT____-NEXT:    store i32 2, i32* [[B]], align 4
-; IS__TUNIT____-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B]]) [[ATTR2]]
+; IS__TUNIT____-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR2]]
 ; IS__TUNIT____-NEXT:    ret i32 0
 ;
 ; IS__CGSCC_OPM: Function Attrs: nofree nosync nounwind readnone willreturn
@@ -86,7 +86,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR1:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 2, i32* [[B]], align 4
-; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B]]) [[ATTR3:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR3:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 0
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -94,7 +94,7 @@
 ; IS__CGSCC_NPM-SAME: () [[ATTR1:#.*]] {
 ; IS__CGSCC_NPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_NPM-NEXT:    store i32 2, i32* [[B]], align 4
-; IS__CGSCC_NPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[B]]) [[ATTR3:#.*]]
+; IS__CGSCC_NPM-NEXT:    [[X:%.*]] = call i32 @caller(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR3:#.*]]
 ; IS__CGSCC_NPM-NEXT:    ret i32 0
 ;
   %B = alloca i32
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/naked_functions.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/naked_functions.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/naked_functions.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/naked_functions.ll
@@ -11,7 +11,7 @@
 define i32 @bar() {
 ; CHECK-LABEL: define {{[^@]+}}@bar() {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[CALL:%.*]] = call i32 @foo(i32* noundef nonnull align 4 dereferenceable(4) @g)
+; CHECK-NEXT:    [[CALL:%.*]] = call i32 @foo(i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) @g)
 ; CHECK-NEXT:    ret i32 [[CALL]]
 ;
 entry:
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/profile.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/profile.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/profile.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/profile.ll
@@ -11,7 +11,7 @@
 ; IS________OPM-LABEL: define {{[^@]+}}@caller() {
 ; IS________OPM-NEXT:    [[X:%.*]] = alloca i32, align 4
 ; IS________OPM-NEXT:    store i32 42, i32* [[X]], align 4
-; IS________OPM-NEXT:    call void @promote_i32_ptr(i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[X]]), !prof !0
+; IS________OPM-NEXT:    call void @promote_i32_ptr(i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[X]]), !prof !0
 ; IS________OPM-NEXT:    ret void
 ;
 ; IS________NPM-LABEL: define {{[^@]+}}@caller() {
@@ -29,7 +29,7 @@
 
 define internal void @promote_i32_ptr(i32* %xp) {
 ; IS________OPM-LABEL: define {{[^@]+}}@promote_i32_ptr
-; IS________OPM-SAME: (i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[XP:%.*]]) {
+; IS________OPM-SAME: (i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[XP:%.*]]) {
 ; IS________OPM-NEXT:    [[X:%.*]] = load i32, i32* [[XP]], align 4
 ; IS________OPM-NEXT:    call void @use_i32(i32 [[X]])
 ; IS________OPM-NEXT:    ret void
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/reserve-tbaa.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/reserve-tbaa.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/reserve-tbaa.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/reserve-tbaa.ll
@@ -19,7 +19,7 @@
 define internal fastcc void @fn(i32* nocapture readonly %p1, i64* nocapture readonly %p2) {
 ; IS__TUNIT____: Function Attrs: nofree nosync nounwind willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@fn
-; IS__TUNIT____-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[P1:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT____-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P1:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT____-NEXT:  entry:
 ; IS__TUNIT____-NEXT:    [[TMP0:%.*]] = load i32, i32* @g, align 4, [[TBAA0:!tbaa !.*]]
 ; IS__TUNIT____-NEXT:    [[CONV1:%.*]] = trunc i32 [[TMP0]] to i8
@@ -53,7 +53,7 @@
 ; IS__TUNIT____-NEXT:    store i32* @g, i32** [[TMP0]], align 8, [[TBAA5]]
 ; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = load i32*, i32** @a, align 8, [[TBAA5]]
 ; IS__TUNIT____-NEXT:    store i32 1, i32* [[TMP1]], align 4, [[TBAA0]]
-; IS__TUNIT____-NEXT:    call fastcc void @fn(i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) @g) [[ATTR0]]
+; IS__TUNIT____-NEXT:    call fastcc void @fn(i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) @g) [[ATTR0]]
 ; IS__TUNIT____-NEXT:    ret i32 0
 ;
 ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/sret.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/sret.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/sret.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/sret.ll
@@ -11,7 +11,7 @@
 ;
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree nosync nounwind willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@add
-; IS__TUNIT_OPM-SAME: ({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[THIS:%.*]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT_OPM-SAME: ({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[THIS:%.*]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[AP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 0
 ; IS__TUNIT_OPM-NEXT:    [[BP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 1
 ; IS__TUNIT_OPM-NEXT:    [[A:%.*]] = load i32, i32* [[AP]], align 8
@@ -22,7 +22,7 @@
 ;
 ; IS__TUNIT_NPM: Function Attrs: argmemonly nofree nosync nounwind willreturn
 ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@add
-; IS__TUNIT_NPM-SAME: ({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[THIS:%.*]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT_NPM-SAME: ({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[THIS:%.*]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT_NPM-NEXT:    [[AP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 0
 ; IS__TUNIT_NPM-NEXT:    [[BP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 1
 ; IS__TUNIT_NPM-NEXT:    [[A:%.*]] = load i32, i32* [[AP]], align 8
@@ -33,7 +33,7 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@add
-; IS__CGSCC_OPM-SAME: ({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[THIS:%.*]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC_OPM-SAME: ({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[THIS:%.*]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[AP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 0
 ; IS__CGSCC_OPM-NEXT:    [[BP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 1
 ; IS__CGSCC_OPM-NEXT:    [[A:%.*]] = load i32, i32* [[AP]], align 8
@@ -44,7 +44,7 @@
 ;
 ; IS__CGSCC_NPM: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
 ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@add
-; IS__CGSCC_NPM-SAME: ({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[THIS:%.*]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC_NPM-SAME: ({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[THIS:%.*]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC_NPM-NEXT:    [[AP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 0
 ; IS__CGSCC_NPM-NEXT:    [[BP:%.*]] = getelementptr { i32, i32 }, { i32, i32 }* [[THIS]], i32 0, i32 1
 ; IS__CGSCC_NPM-NEXT:    [[A:%.*]] = load i32, i32* [[AP]], align 8
@@ -68,7 +68,7 @@
 ; IS__TUNIT_OPM-SAME: () [[ATTR1:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[R:%.*]] = alloca i32, align 4
 ; IS__TUNIT_OPM-NEXT:    [[PAIR:%.*]] = alloca { i32, i32 }, align 8
-; IS__TUNIT_OPM-NEXT:    call void @add({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[PAIR]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R]]) [[ATTR2:#.*]]
+; IS__TUNIT_OPM-NEXT:    call void @add({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[PAIR]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R]]) [[ATTR2:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret void
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
@@ -76,7 +76,7 @@
 ; IS__TUNIT_NPM-SAME: () [[ATTR1:#.*]] {
 ; IS__TUNIT_NPM-NEXT:    [[R:%.*]] = alloca i32, align 4
 ; IS__TUNIT_NPM-NEXT:    [[PAIR:%.*]] = alloca { i32, i32 }, align 8
-; IS__TUNIT_NPM-NEXT:    call void @add({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[PAIR]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R]]) [[ATTR2:#.*]]
+; IS__TUNIT_NPM-NEXT:    call void @add({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[PAIR]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R]]) [[ATTR2:#.*]]
 ; IS__TUNIT_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC_OPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -84,7 +84,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR1:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[R:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    [[PAIR:%.*]] = alloca { i32, i32 }, align 8
-; IS__CGSCC_OPM-NEXT:    call void @add({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[PAIR]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R]]) [[ATTR2:#.*]]
+; IS__CGSCC_OPM-NEXT:    call void @add({ i32, i32 }* nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[PAIR]], i32* nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R]]) [[ATTR2:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret void
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -92,7 +92,7 @@
 ; IS__CGSCC_NPM-SAME: () [[ATTR1:#.*]] {
 ; IS__CGSCC_NPM-NEXT:    [[R:%.*]] = alloca i32, align 4
 ; IS__CGSCC_NPM-NEXT:    [[PAIR:%.*]] = alloca { i32, i32 }, align 8
-; IS__CGSCC_NPM-NEXT:    call void @add({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) [[PAIR]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) [[R]]) [[ATTR2:#.*]]
+; IS__CGSCC_NPM-NEXT:    call void @add({ i32, i32 }* noalias nocapture nofree noundef nonnull readonly align 8 dereferenceable(8) maxobjsize(8) [[PAIR]], i32* noalias nocapture nofree noundef nonnull sret writeonly align 4 dereferenceable(4) maxobjsize(4) [[R]]) [[ATTR2:#.*]]
 ; IS__CGSCC_NPM-NEXT:    ret void
 ;
   %r = alloca i32
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/tail.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/tail.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/tail.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/tail.ll
@@ -34,7 +34,7 @@
 ; IS__CGSCC_NPM-NEXT:    store i32 [[TMP0]], i32* [[DATA_PRIV_CAST]], align 8
 ; IS__CGSCC_NPM-NEXT:    [[DATA_PRIV_0_1:%.*]] = getelementptr [[PAIR]], %pair* [[DATA_PRIV]], i32 0, i32 1
 ; IS__CGSCC_NPM-NEXT:    store i32 [[TMP1]], i32* [[DATA_PRIV_0_1]], align 4
-; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = call i8* @foo(%pair* noundef nonnull align 8 dereferenceable(8) [[DATA_PRIV]])
+; IS__CGSCC_NPM-NEXT:    [[TMP3:%.*]] = call i8* @foo(%pair* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[DATA_PRIV]])
 ; IS__CGSCC_NPM-NEXT:    ret void
 ;
   tail call i8* @foo(%pair* %Data)
diff --git a/llvm/test/Transforms/Attributor/ArgumentPromotion/variadic.ll b/llvm/test/Transforms/Attributor/ArgumentPromotion/variadic.ll
--- a/llvm/test/Transforms/Attributor/ArgumentPromotion/variadic.ll
+++ b/llvm/test/Transforms/Attributor/ArgumentPromotion/variadic.ll
@@ -21,7 +21,7 @@
 ; CHECK-LABEL: define {{[^@]+}}@main
 ; CHECK-SAME: (i32 [[ARGC:%.*]], i8** nocapture nofree readnone [[ARGV:%.*]]) {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    tail call void (i8*, i8*, i8*, i8*, i8*, ...) @callee_t0f(i8* undef, i8* undef, i8* undef, i8* undef, i8* undef, %struct.tt0* noundef nonnull byval align 8 dereferenceable(16) @t45)
+; CHECK-NEXT:    tail call void (i8*, i8*, i8*, i8*, i8*, ...) @callee_t0f(i8* undef, i8* undef, i8* undef, i8* undef, i8* undef, %struct.tt0* noundef nonnull byval align 8 dereferenceable(16) maxobjsize(16) @t45)
 ; CHECK-NEXT:    ret i32 0
 ;
 entry:
diff --git a/llvm/test/Transforms/Attributor/IPConstantProp/2009-09-24-byval-ptr.ll b/llvm/test/Transforms/Attributor/IPConstantProp/2009-09-24-byval-ptr.ll
--- a/llvm/test/Transforms/Attributor/IPConstantProp/2009-09-24-byval-ptr.ll
+++ b/llvm/test/Transforms/Attributor/IPConstantProp/2009-09-24-byval-ptr.ll
@@ -106,7 +106,7 @@
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@unions
 ; IS__TUNIT_OPM-SAME: () [[ATTR1:#.*]] {
 ; IS__TUNIT_OPM-NEXT:  entry:
-; IS__TUNIT_OPM-NEXT:    [[RESULT:%.*]] = call i32 @vfu2(%struct.MYstr* nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(8) @mystr) [[ATTR0]]
+; IS__TUNIT_OPM-NEXT:    [[RESULT:%.*]] = call i32 @vfu2(%struct.MYstr* nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(8) maxobjsize(8) @mystr) [[ATTR0]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[RESULT]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind willreturn
@@ -217,7 +217,7 @@
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@unions_v2
 ; IS__TUNIT_OPM-SAME: () [[ATTR2]] {
 ; IS__TUNIT_OPM-NEXT:  entry:
-; IS__TUNIT_OPM-NEXT:    [[RESULT:%.*]] = call i32 @vfu2_v2(%struct.MYstr* nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(8) @mystr) [[ATTR2]]
+; IS__TUNIT_OPM-NEXT:    [[RESULT:%.*]] = call i32 @vfu2_v2(%struct.MYstr* nocapture nofree noundef nonnull readonly byval align 8 dereferenceable(8) maxobjsize(8) @mystr) [[ATTR2]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[RESULT]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
@@ -235,7 +235,7 @@
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@unions_v2
 ; IS__CGSCC_OPM-SAME: () [[ATTR0]] {
 ; IS__CGSCC_OPM-NEXT:  entry:
-; IS__CGSCC_OPM-NEXT:    [[RESULT:%.*]] = call i32 @vfu2_v2(%struct.MYstr* noalias nocapture nofree noundef nonnull readnone byval align 8 dereferenceable(8) @mystr) [[ATTR3:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[RESULT:%.*]] = call i32 @vfu2_v2(%struct.MYstr* noalias nocapture nofree noundef nonnull readnone byval align 8 dereferenceable(8) maxobjsize(8) @mystr) [[ATTR3:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[RESULT]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readonly willreturn
diff --git a/llvm/test/Transforms/Attributor/IPConstantProp/openmp_parallel_for.ll b/llvm/test/Transforms/Attributor/IPConstantProp/openmp_parallel_for.ll
--- a/llvm/test/Transforms/Attributor/IPConstantProp/openmp_parallel_for.ll
+++ b/llvm/test/Transforms/Attributor/IPConstantProp/openmp_parallel_for.ll
@@ -36,7 +36,7 @@
 ; IS__TUNIT_OPM-NEXT:    store i32 [[N]], i32* [[N_ADDR]], align 4
 ; IS__TUNIT_OPM-NEXT:    store float 3.000000e+00, float* [[P]], align 4
 ; IS__TUNIT_OPM-NEXT:    store i32 7, i32* [[N_ADDR]], align 4
-; IS__TUNIT_OPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull readonly align 4 dereferenceable(4) [[N_ADDR]], float* nocapture noundef nonnull readonly align 4 dereferenceable(4) [[P]], i64 undef)
+; IS__TUNIT_OPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[N_ADDR]], float* nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P]], i64 undef)
 ; IS__TUNIT_OPM-NEXT:    ret void
 ;
 ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@foo
@@ -47,7 +47,7 @@
 ; IS__TUNIT_NPM-NEXT:    store i32 [[N]], i32* [[N_ADDR]], align 4
 ; IS__TUNIT_NPM-NEXT:    store float 3.000000e+00, float* [[P]], align 4
 ; IS__TUNIT_NPM-NEXT:    store i32 7, i32* [[N_ADDR]], align 4
-; IS__TUNIT_NPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[N_ADDR]], float* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[P]], i64 undef)
+; IS__TUNIT_NPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[N_ADDR]], float* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P]], i64 undef)
 ; IS__TUNIT_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@foo
@@ -58,7 +58,7 @@
 ; IS__CGSCC_OPM-NEXT:    store i32 [[N]], i32* [[N_ADDR]], align 4
 ; IS__CGSCC_OPM-NEXT:    store float 3.000000e+00, float* [[P]], align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 7, i32* [[N_ADDR]], align 4
-; IS__CGSCC_OPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull readonly align 4 dereferenceable(4) [[N_ADDR]], float* nocapture noundef nonnull readonly align 4 dereferenceable(4) [[P]], i64 noundef 4617315517961601024)
+; IS__CGSCC_OPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[N_ADDR]], float* nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P]], i64 noundef 4617315517961601024)
 ; IS__CGSCC_OPM-NEXT:    ret void
 ;
 ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@foo
@@ -69,7 +69,7 @@
 ; IS__CGSCC_NPM-NEXT:    store i32 [[N]], i32* [[N_ADDR]], align 4
 ; IS__CGSCC_NPM-NEXT:    store float 3.000000e+00, float* [[P]], align 4
 ; IS__CGSCC_NPM-NEXT:    store i32 7, i32* [[N_ADDR]], align 4
-; IS__CGSCC_NPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[N_ADDR]], float* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[P]], i64 noundef 4617315517961601024)
+; IS__CGSCC_NPM-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB1:@.*]], i32 noundef 3, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, float*, i64)* @.omp_outlined. to void (i32*, i32*, ...)*), i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[N_ADDR]], float* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P]], i64 noundef 4617315517961601024)
 ; IS__CGSCC_NPM-NEXT:    ret void
 ;
 entry:
@@ -84,7 +84,7 @@
 
 define internal void @.omp_outlined.(i32* noalias %.global_tid., i32* noalias %.bound_tid., i32* dereferenceable(4) %N, float* dereferenceable(4) %p, i64 %q) {
 ; IS________OPM-LABEL: define {{[^@]+}}@.omp_outlined.
-; IS________OPM-SAME: (i32* noalias nocapture readonly [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull readonly align 4 dereferenceable(4) [[N:%.*]], float* nocapture noundef nonnull readonly align 4 dereferenceable(4) [[P:%.*]], i64 [[Q:%.*]]) {
+; IS________OPM-SAME: (i32* noalias nocapture readonly [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[N:%.*]], float* nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P:%.*]], i64 [[Q:%.*]]) {
 ; IS________OPM-NEXT:  entry:
 ; IS________OPM-NEXT:    [[Q_ADDR:%.*]] = alloca i64, align 8
 ; IS________OPM-NEXT:    [[DOTOMP_LB:%.*]] = alloca i32, align 4
@@ -103,7 +103,7 @@
 ; IS________OPM-NEXT:    store i32 1, i32* [[DOTOMP_STRIDE]], align 4
 ; IS________OPM-NEXT:    store i32 0, i32* [[DOTOMP_IS_LAST]], align 4
 ; IS________OPM-NEXT:    [[TMP5:%.*]] = load i32, i32* [[DOTGLOBAL_TID_]], align 4
-; IS________OPM-NEXT:    call void @__kmpc_for_static_init_4(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB0:@.*]], i32 [[TMP5]], i32 noundef 34, i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_IS_LAST]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_LB]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_UB]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_STRIDE]], i32 noundef 1, i32 noundef 1)
+; IS________OPM-NEXT:    call void @__kmpc_for_static_init_4(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0:@.*]], i32 [[TMP5]], i32 noundef 34, i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_IS_LAST]], i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_LB]], i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_UB]], i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_STRIDE]], i32 noundef 1, i32 noundef 1)
 ; IS________OPM-NEXT:    [[TMP6:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
 ; IS________OPM-NEXT:    [[CMP6:%.*]] = icmp sgt i32 [[TMP6]], [[SUB3]]
 ; IS________OPM-NEXT:    br i1 [[CMP6]], label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]
@@ -139,13 +139,13 @@
 ; IS________OPM-NEXT:    br label [[OMP_LOOP_EXIT:%.*]]
 ; IS________OPM:       omp.loop.exit:
 ; IS________OPM-NEXT:    [[TMP12:%.*]] = load i32, i32* [[DOTGLOBAL_TID_]], align 4
-; IS________OPM-NEXT:    call void @__kmpc_for_static_fini(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB0]], i32 [[TMP12]])
+; IS________OPM-NEXT:    call void @__kmpc_for_static_fini(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 [[TMP12]])
 ; IS________OPM-NEXT:    br label [[OMP_PRECOND_END]]
 ; IS________OPM:       omp.precond.end:
 ; IS________OPM-NEXT:    ret void
 ;
 ; IS________NPM-LABEL: define {{[^@]+}}@.omp_outlined.
-; IS________NPM-SAME: (i32* noalias nocapture readonly [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[N:%.*]], float* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) [[P:%.*]], i64 [[Q:%.*]]) {
+; IS________NPM-SAME: (i32* noalias nocapture readonly [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[N:%.*]], float* noalias nocapture noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[P:%.*]], i64 [[Q:%.*]]) {
 ; IS________NPM-NEXT:  entry:
 ; IS________NPM-NEXT:    [[Q_ADDR:%.*]] = alloca i64, align 8
 ; IS________NPM-NEXT:    [[DOTOMP_LB:%.*]] = alloca i32, align 4
@@ -164,7 +164,7 @@
 ; IS________NPM-NEXT:    store i32 1, i32* [[DOTOMP_STRIDE]], align 4
 ; IS________NPM-NEXT:    store i32 0, i32* [[DOTOMP_IS_LAST]], align 4
 ; IS________NPM-NEXT:    [[TMP5:%.*]] = load i32, i32* [[DOTGLOBAL_TID_]], align 4
-; IS________NPM-NEXT:    call void @__kmpc_for_static_init_4(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB0:@.*]], i32 [[TMP5]], i32 noundef 34, i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_IS_LAST]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_LB]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_UB]], i32* noundef nonnull align 4 dereferenceable(4) [[DOTOMP_STRIDE]], i32 noundef 1, i32 noundef 1)
+; IS________NPM-NEXT:    call void @__kmpc_for_static_init_4(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0:@.*]], i32 [[TMP5]], i32 noundef 34, i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_IS_LAST]], i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_LB]], i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_UB]], i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[DOTOMP_STRIDE]], i32 noundef 1, i32 noundef 1)
 ; IS________NPM-NEXT:    [[TMP6:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
 ; IS________NPM-NEXT:    [[CMP6:%.*]] = icmp sgt i32 [[TMP6]], [[SUB3]]
 ; IS________NPM-NEXT:    br i1 [[CMP6]], label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]
@@ -200,7 +200,7 @@
 ; IS________NPM-NEXT:    br label [[OMP_LOOP_EXIT:%.*]]
 ; IS________NPM:       omp.loop.exit:
 ; IS________NPM-NEXT:    [[TMP12:%.*]] = load i32, i32* [[DOTGLOBAL_TID_]], align 4
-; IS________NPM-NEXT:    call void @__kmpc_for_static_fini(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) [[GLOB0]], i32 [[TMP12]])
+; IS________NPM-NEXT:    call void @__kmpc_for_static_fini(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 [[TMP12]])
 ; IS________NPM-NEXT:    br label [[OMP_PRECOND_END]]
 ; IS________NPM:       omp.precond.end:
 ; IS________NPM-NEXT:    ret void
diff --git a/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll b/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll
--- a/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll
+++ b/llvm/test/Transforms/Attributor/IPConstantProp/pthreads.ll
@@ -36,10 +36,10 @@
 ; IS__TUNIT____-NEXT:    [[ALLOC1:%.*]] = alloca i8, align 8
 ; IS__TUNIT____-NEXT:    [[ALLOC2:%.*]] = alloca i8, align 8
 ; IS__TUNIT____-NEXT:    [[THREAD:%.*]] = alloca i64, align 8
-; IS__TUNIT____-NEXT:    [[CALL:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @foo, i8* noalias nocapture nofree readnone align 536870912 undef)
-; IS__TUNIT____-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @bar, i8* noalias nofree nonnull readnone align 8 dereferenceable(8) "no-capture-maybe-returned" undef)
-; IS__TUNIT____-NEXT:    [[CALL2:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @baz, i8* noalias nocapture nofree noundef nonnull readnone align 8 dereferenceable(1) [[ALLOC1]])
-; IS__TUNIT____-NEXT:    [[CALL3:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @buz, i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" [[ALLOC2]])
+; IS__TUNIT____-NEXT:    [[CALL:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @foo, i8* noalias nocapture nofree readnone align 536870912 undef)
+; IS__TUNIT____-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @bar, i8* noalias nofree nonnull readnone align 8 dereferenceable(8) maxobjsize(8) "no-capture-maybe-returned" undef)
+; IS__TUNIT____-NEXT:    [[CALL2:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @baz, i8* noalias nocapture nofree noundef nonnull readnone align 8 dereferenceable(1) maxobjsize(1) [[ALLOC1]])
+; IS__TUNIT____-NEXT:    [[CALL3:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @buz, i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[ALLOC2]])
 ; IS__TUNIT____-NEXT:    ret i32 0
 ;
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@main() {
@@ -47,10 +47,10 @@
 ; IS__CGSCC____-NEXT:    [[ALLOC1:%.*]] = alloca i8, align 8
 ; IS__CGSCC____-NEXT:    [[ALLOC2:%.*]] = alloca i8, align 8
 ; IS__CGSCC____-NEXT:    [[THREAD:%.*]] = alloca i64, align 8
-; IS__CGSCC____-NEXT:    [[CALL:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @foo, i8* noalias nocapture nofree noundef readnone align 536870912 null)
-; IS__CGSCC____-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @bar, i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(8) bitcast (i8** @GlobalVPtr to i8*))
-; IS__CGSCC____-NEXT:    [[CALL2:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @baz, i8* noalias nocapture nofree noundef nonnull readnone align 8 dereferenceable(1) [[ALLOC1]])
-; IS__CGSCC____-NEXT:    [[CALL3:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @buz, i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" [[ALLOC2]])
+; IS__CGSCC____-NEXT:    [[CALL:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @foo, i8* noalias nocapture nofree noundef readnone align 536870912 null)
+; IS__CGSCC____-NEXT:    [[CALL1:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @bar, i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(8) maxobjsize(8) bitcast (i8** @GlobalVPtr to i8*))
+; IS__CGSCC____-NEXT:    [[CALL2:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @baz, i8* noalias nocapture nofree noundef nonnull readnone align 8 dereferenceable(1) maxobjsize(1) [[ALLOC1]])
+; IS__CGSCC____-NEXT:    [[CALL3:%.*]] = call i32 @pthread_create(i64* noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[THREAD]], %union.pthread_attr_t* noalias nocapture noundef align 536870912 null, i8* (i8*)* noundef nonnull @buz, i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[ALLOC2]])
 ; IS__CGSCC____-NEXT:    ret i32 0
 ;
 entry:
@@ -86,13 +86,13 @@
 define internal i8* @bar(i8* %arg) {
 ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@bar
-; IS__TUNIT____-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(8) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
+; IS__TUNIT____-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(8) maxobjsize(8) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
 ; IS__TUNIT____-NEXT:  entry:
 ; IS__TUNIT____-NEXT:    ret i8* bitcast (i8** @GlobalVPtr to i8*)
 ;
 ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@bar
-; IS__CGSCC____-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(8) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
+; IS__CGSCC____-SAME: (i8* noalias nofree nonnull readnone returned align 8 dereferenceable(8) maxobjsize(8) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
 ; IS__CGSCC____-NEXT:  entry:
 ; IS__CGSCC____-NEXT:    ret i8* bitcast (i8** @GlobalVPtr to i8*)
 ;
@@ -103,13 +103,13 @@
 define internal i8* @baz(i8* %arg) {
 ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@baz
-; IS__TUNIT____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
+; IS__TUNIT____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
 ; IS__TUNIT____-NEXT:  entry:
 ; IS__TUNIT____-NEXT:    ret i8* [[ARG]]
 ;
 ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@baz
-; IS__CGSCC____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
+; IS__CGSCC____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
 ; IS__CGSCC____-NEXT:  entry:
 ; IS__CGSCC____-NEXT:    ret i8* [[ARG]]
 ;
@@ -120,13 +120,13 @@
 define internal i8* @buz(i8* %arg) {
 ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readnone willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@buz
-; IS__TUNIT____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
+; IS__TUNIT____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
 ; IS__TUNIT____-NEXT:  entry:
 ; IS__TUNIT____-NEXT:    ret i8* [[ARG]]
 ;
 ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@buz
-; IS__CGSCC____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
+; IS__CGSCC____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[ARG:%.*]]) [[ATTR0]] {
 ; IS__CGSCC____-NEXT:  entry:
 ; IS__CGSCC____-NEXT:    ret i8* [[ARG]]
 ;
diff --git a/llvm/test/Transforms/Attributor/IPConstantProp/return-argument.ll b/llvm/test/Transforms/Attributor/IPConstantProp/return-argument.ll
--- a/llvm/test/Transforms/Attributor/IPConstantProp/return-argument.ll
+++ b/llvm/test/Transforms/Attributor/IPConstantProp/return-argument.ll
@@ -8,7 +8,7 @@
 define internal i32* @incdec(i1 %C, i32* %V) {
 ; IS__TUNIT____: Function Attrs: argmemonly nofree nosync nounwind willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@incdec
-; IS__TUNIT____-SAME: (i1 [[C:%.*]], i32* noalias nofree noundef nonnull returned align 4 dereferenceable(4) "no-capture-maybe-returned" [[V:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT____-SAME: (i1 [[C:%.*]], i32* noalias nofree noundef nonnull returned align 4 dereferenceable(4) maxobjsize(4) "no-capture-maybe-returned" [[V:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT____-NEXT:    [[X:%.*]] = load i32, i32* [[V]], align 4
 ; IS__TUNIT____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__TUNIT____:       T:
@@ -22,7 +22,7 @@
 ;
 ; IS__CGSCC____: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@incdec
-; IS__CGSCC____-SAME: (i1 [[C:%.*]], i32* noalias nofree noundef nonnull returned align 4 dereferenceable(4) "no-capture-maybe-returned" [[V:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC____-SAME: (i1 [[C:%.*]], i32* noalias nofree noundef nonnull returned align 4 dereferenceable(4) maxobjsize(4) "no-capture-maybe-returned" [[V:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC____-NEXT:    [[X:%.*]] = load i32, i32* [[V]], align 4
 ; IS__CGSCC____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__CGSCC____:       T:
@@ -78,7 +78,7 @@
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller
 ; IS__TUNIT____-SAME: (i1 [[C:%.*]]) [[ATTR2:#.*]] personality i32 (...)* @__gxx_personality_v0 {
 ; IS__TUNIT____-NEXT:    [[Q:%.*]] = alloca i32, align 4
-; IS__TUNIT____-NEXT:    [[W:%.*]] = call align 4 i32* @incdec(i1 [[C]], i32* noalias nofree noundef nonnull align 4 dereferenceable(4) "no-capture-maybe-returned" [[Q]]) [[ATTR2]]
+; IS__TUNIT____-NEXT:    [[W:%.*]] = call align 4 i32* @incdec(i1 [[C]], i32* noalias nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) "no-capture-maybe-returned" [[Q]]) [[ATTR2]]
 ; IS__TUNIT____-NEXT:    [[S1:%.*]] = call { i32, i32 } @foo(i32 noundef 1, i32 noundef 2) [[ATTR1]]
 ; IS__TUNIT____-NEXT:    [[X1:%.*]] = extractvalue { i32, i32 } [[S1]], 0
 ; IS__TUNIT____-NEXT:    [[S2:%.*]] = call { i32, i32 } @foo(i32 noundef 3, i32 noundef 4) [[ATTR1]]
@@ -97,7 +97,7 @@
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller
 ; IS__CGSCC____-SAME: (i1 [[C:%.*]]) [[ATTR1]] personality i32 (...)* @__gxx_personality_v0 {
 ; IS__CGSCC____-NEXT:    [[Q:%.*]] = alloca i32, align 4
-; IS__CGSCC____-NEXT:    [[W:%.*]] = call align 4 i32* @incdec(i1 [[C]], i32* noalias nofree noundef nonnull align 4 dereferenceable(4) "no-capture-maybe-returned" [[Q]]) [[ATTR2:#.*]]
+; IS__CGSCC____-NEXT:    [[W:%.*]] = call align 4 i32* @incdec(i1 [[C]], i32* noalias nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) "no-capture-maybe-returned" [[Q]]) [[ATTR2:#.*]]
 ; IS__CGSCC____-NEXT:    [[S1:%.*]] = call { i32, i32 } @foo(i32 noundef 1, i32 noundef 2) [[ATTR3:#.*]]
 ; IS__CGSCC____-NEXT:    [[X1:%.*]] = extractvalue { i32, i32 } [[S1]], 0
 ; IS__CGSCC____-NEXT:    [[S2:%.*]] = call { i32, i32 } @foo(i32 noundef 3, i32 noundef 4) [[ATTR4:#.*]]
diff --git a/llvm/test/Transforms/Attributor/IPConstantProp/thread_local_acs.ll b/llvm/test/Transforms/Attributor/IPConstantProp/thread_local_acs.ll
--- a/llvm/test/Transforms/Attributor/IPConstantProp/thread_local_acs.ll
+++ b/llvm/test/Transforms/Attributor/IPConstantProp/thread_local_acs.ll
@@ -26,7 +26,7 @@
 define internal i32 @callee(i32* %thread_local_ptr, i32* %shared_ptr) {
 ; IS__TUNIT____: Function Attrs: nofree nosync nounwind readonly willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@callee
-; IS__TUNIT____-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[THREAD_LOCAL_PTR:%.*]], i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[SHARED_PTR:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT____-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[THREAD_LOCAL_PTR:%.*]], i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[SHARED_PTR:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT____-NEXT:  entry:
 ; IS__TUNIT____-NEXT:    [[TMP:%.*]] = load i32, i32* [[THREAD_LOCAL_PTR]], align 4
 ; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = load i32, i32* @gsh, align 4
@@ -35,7 +35,7 @@
 ;
 ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readonly willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@callee
-; IS__CGSCC____-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[THREAD_LOCAL_PTR:%.*]], i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[SHARED_PTR:%.*]]) [[ATTR0:#.*]] {
+; IS__CGSCC____-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[THREAD_LOCAL_PTR:%.*]], i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[SHARED_PTR:%.*]]) [[ATTR0:#.*]] {
 ; IS__CGSCC____-NEXT:  entry:
 ; IS__CGSCC____-NEXT:    [[TMP:%.*]] = load i32, i32* [[THREAD_LOCAL_PTR]], align 4
 ; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = load i32, i32* @gsh, align 4
@@ -52,12 +52,12 @@
 define dso_local void @caller() {
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@caller() {
 ; IS__TUNIT____-NEXT:  entry:
-; IS__TUNIT____-NEXT:    call void @broker(i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) @gtl, i32 (i32*, i32*)* noundef nonnull @callee, i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) undef)
+; IS__TUNIT____-NEXT:    call void @broker(i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) @gtl, i32 (i32*, i32*)* noundef nonnull @callee, i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) maxobjsize(4) undef)
 ; IS__TUNIT____-NEXT:    ret void
 ;
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@caller() {
 ; IS__CGSCC____-NEXT:  entry:
-; IS__CGSCC____-NEXT:    call void @broker(i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) @gtl, i32 (i32*, i32*)* noundef nonnull @callee, i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) @gsh)
+; IS__CGSCC____-NEXT:    call void @broker(i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) @gtl, i32 (i32*, i32*)* noundef nonnull @callee, i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) @gsh)
 ; IS__CGSCC____-NEXT:    ret void
 ;
 entry:
diff --git a/llvm/test/Transforms/Attributor/align.ll b/llvm/test/Transforms/Attributor/align.ll
--- a/llvm/test/Transforms/Attributor/align.ll
+++ b/llvm/test/Transforms/Attributor/align.ll
@@ -153,7 +153,7 @@
 define internal i8* @f1(i8* readnone %0) local_unnamed_addr #0 {
 ; IS__TUNIT____: Function Attrs: nofree noinline nosync nounwind readnone uwtable willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@f1
-; IS__TUNIT____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr [[ATTR0]] {
+; IS__TUNIT____-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr [[ATTR0]] {
 ; IS__TUNIT____-NEXT:    br label [[TMP3:%.*]]
 ; IS__TUNIT____:       2:
 ; IS__TUNIT____-NEXT:    unreachable
@@ -162,7 +162,7 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: nofree noinline nosync nounwind readnone uwtable willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@f1
-; IS__CGSCC_OPM-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr [[ATTR2:#.*]] {
+; IS__CGSCC_OPM-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr [[ATTR2:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    br label [[TMP3:%.*]]
 ; IS__CGSCC_OPM:       2:
 ; IS__CGSCC_OPM-NEXT:    unreachable
@@ -230,7 +230,7 @@
 ; IS__TUNIT____: Function Attrs: nofree noinline nosync nounwind readnone uwtable willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@test7
 ; IS__TUNIT____-SAME: () [[ATTR0]] {
-; IS__TUNIT____-NEXT:    [[C:%.*]] = tail call i8* @f1(i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(1) "no-capture-maybe-returned" @a1) [[ATTR9:#.*]]
+; IS__TUNIT____-NEXT:    [[C:%.*]] = tail call i8* @f1(i8* noalias nofree noundef nonnull readnone align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" @a1) [[ATTR9:#.*]]
 ; IS__TUNIT____-NEXT:    ret i8* [[C]]
 ;
 ; IS__CGSCC____: Function Attrs: nofree noinline norecurse nosync nounwind readnone uwtable willreturn
@@ -247,7 +247,7 @@
 define internal i8* @f1b(i8* readnone %0) local_unnamed_addr #0 {
 ; IS__CGSCC_OPM: Function Attrs: nofree noinline nosync nounwind readnone uwtable willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@f1b
-; IS__CGSCC_OPM-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr [[ATTR2]] {
+; IS__CGSCC_OPM-SAME: (i8* noalias nofree noundef nonnull readnone returned align 8 dereferenceable(1) maxobjsize(1) "no-capture-maybe-returned" [[TMP0:%.*]]) local_unnamed_addr [[ATTR2]] {
 ; IS__CGSCC_OPM-NEXT:    br label [[TMP3:%.*]]
 ; IS__CGSCC_OPM:       2:
 ; IS__CGSCC_OPM-NEXT:    unreachable
diff --git a/llvm/test/Transforms/Attributor/callbacks.ll b/llvm/test/Transforms/Attributor/callbacks.ll
--- a/llvm/test/Transforms/Attributor/callbacks.ll
+++ b/llvm/test/Transforms/Attributor/callbacks.ll
@@ -25,7 +25,7 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_OPM-NEXT:    ret void
 ;
 ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t0_caller
@@ -37,7 +37,7 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t0_caller
@@ -49,7 +49,7 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_OPM-NEXT:    ret void
 ;
 ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t0_caller
@@ -61,7 +61,7 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_NPM-NEXT:    ret void
 ;
 entry:
@@ -80,7 +80,7 @@
 define internal void @t0_callback_callee(i32* %is_not_null, i32* %ptr, i32* %a, i64 %b, i32** %c) {
 ;
 ; IS________OPM-LABEL: define {{[^@]+}}@t0_callback_callee
-; IS________OPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C:%.*]]) {
+; IS________OPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C:%.*]]) {
 ; IS________OPM-NEXT:  entry:
 ; IS________OPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
 ; IS________OPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
@@ -89,7 +89,7 @@
 ; IS________OPM-NEXT:    ret void
 ;
 ; IS________NPM-LABEL: define {{[^@]+}}@t0_callback_callee
-; IS________NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C:%.*]]) {
+; IS________NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C:%.*]]) {
 ; IS________NPM-NEXT:  entry:
 ; IS________NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
 ; IS________NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
@@ -125,7 +125,7 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_OPM-NEXT:    ret void
 ;
 ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t1_caller
@@ -137,7 +137,7 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t1_caller
@@ -149,7 +149,7 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_OPM-NEXT:    ret void
 ;
 ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t1_caller
@@ -161,7 +161,7 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_NPM-NEXT:    ret void
 ;
 entry:
@@ -181,7 +181,7 @@
 ;
 ; IS________OPM: Function Attrs: nosync
 ; IS________OPM-LABEL: define {{[^@]+}}@t1_callback_callee
-; IS________OPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C:%.*]]) [[ATTR0:#.*]] {
+; IS________OPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C:%.*]]) [[ATTR0:#.*]] {
 ; IS________OPM-NEXT:  entry:
 ; IS________OPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
 ; IS________OPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
@@ -191,7 +191,7 @@
 ;
 ; IS________NPM: Function Attrs: nosync
 ; IS________NPM-LABEL: define {{[^@]+}}@t1_callback_callee
-; IS________NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C:%.*]]) [[ATTR0:#.*]] {
+; IS________NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C:%.*]]) [[ATTR0:#.*]] {
 ; IS________NPM-NEXT:  entry:
 ; IS________NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
 ; IS________NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
@@ -225,7 +225,7 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_OPM-NEXT:    ret void
 ;
 ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t2_caller
@@ -237,7 +237,7 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t2_caller
@@ -249,7 +249,7 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_OPM-NEXT:    ret void
 ;
 ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t2_caller
@@ -261,7 +261,7 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_NPM-NEXT:    ret void
 ;
 entry:
@@ -282,7 +282,7 @@
 define internal void @t2_callback_callee(i32* %is_not_null, i32* %ptr, i32* %a, i64 %b, i32** %c) {
 ;
 ; IS________OPM-LABEL: define {{[^@]+}}@t2_callback_callee
-; IS________OPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C:%.*]]) {
+; IS________OPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C:%.*]]) {
 ; IS________OPM-NEXT:  entry:
 ; IS________OPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
 ; IS________OPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
@@ -291,7 +291,7 @@
 ; IS________OPM-NEXT:    ret void
 ;
 ; IS________NPM-LABEL: define {{[^@]+}}@t2_callback_callee
-; IS________NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C:%.*]]) {
+; IS________NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C:%.*]]) {
 ; IS________NPM-NEXT:  entry:
 ; IS________NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
 ; IS________NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
@@ -325,8 +325,8 @@
 ; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
-; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
+; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_OPM-NEXT:    ret void
 ;
 ; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t3_caller
@@ -338,8 +338,8 @@
 ; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
-; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
+; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__TUNIT_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t3_caller
@@ -351,8 +351,8 @@
 ; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
-; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
+; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_OPM-NEXT:    ret void
 ;
 ; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t3_caller
@@ -364,8 +364,8 @@
 ; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
 ; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
 ; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
-; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
-; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) [[C]])
+; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
+; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture noundef align 536870912 null, i32* noalias nocapture noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR]], void (i32*, i32*, ...)* nocapture noundef bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 noundef 99, i32** noalias nocapture noundef nonnull readonly align 64 dereferenceable(8) maxobjsize(8) [[C]])
 ; IS__CGSCC_NPM-NEXT:    ret void
 ;
 entry:
diff --git a/llvm/test/Transforms/Attributor/depgraph.ll b/llvm/test/Transforms/Attributor/depgraph.ll
--- a/llvm/test/Transforms/Attributor/depgraph.ll
+++ b/llvm/test/Transforms/Attributor/depgraph.ll
@@ -142,6 +142,8 @@
 ; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AADereferenceable] for CtxI '  %2 = load i32, i32* %0, align 4' at position {fn_ret:checkAndAdvance [checkAndAdvance@-1]} with state unknown-dereferenceable
 ; GRAPH-EMPTY:
+; GRAPH-NEXT: [AAMaxObjSize] for CtxI '  %2 = load i32, i32* %0, align 4' at position {fn_ret:checkAndAdvance [checkAndAdvance@-1]} with state unknown-maxobjsize
+; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AAIsDead] for CtxI '  %2 = load i32, i32* %0, align 4' at position {arg: [@0]} with state assumed-live
 ; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AANoUndef] for CtxI '  %2 = load i32, i32* %0, align 4' at position {arg: [@0]} with state may-undef-or-poison
@@ -173,6 +175,8 @@
 ; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AAPrivatizablePtr] for CtxI '  %2 = load i32, i32* %0, align 4' at position {arg: [@0]} with state [no-priv]
 ; GRAPH-EMPTY:
+; GRAPH-NEXT: [AAMaxObjSize] for CtxI '  %2 = load i32, i32* %0, align 4' at position {arg: [@0]} with state unknown-maxobjsize
+; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AAIsDead] for CtxI '  %6 = call i32* @checkAndAdvance(i32* %5)' at position {cs_ret: [@-1]} with state assumed-live
 ; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AANoUnwind] for CtxI '  %6 = call i32* @checkAndAdvance(i32* %5)' at position {cs: [@-1]} with state nounwind
@@ -204,6 +208,8 @@
 ; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AANoFree] for CtxI '  %6 = call i32* @checkAndAdvance(i32* %5)' at position {cs_arg: [@0]} with state nofree
 ; GRAPH-EMPTY:
+; GRAPH-NEXT: [AAMaxObjSize] for CtxI '  %6 = call i32* @checkAndAdvance(i32* %5)' at position {cs_arg: [@0]} with state unknown-maxobjsize
+; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AAValueConstantRange] for CtxI '  %3 = icmp eq i32 %2, 0' at position {flt: [@-1]} with state range(1)<full-set / full-set>
 ; GRAPH-EMPTY:
 ; GRAPH-NEXT: [AAValueConstantRange] for CtxI <<null inst>> at position {flt: [@-1]} with state range(32)<[0,1) / [0,1)>
diff --git a/llvm/test/Transforms/Attributor/internal-noalias.ll b/llvm/test/Transforms/Attributor/internal-noalias.ll
--- a/llvm/test/Transforms/Attributor/internal-noalias.ll
+++ b/llvm/test/Transforms/Attributor/internal-noalias.ll
@@ -116,8 +116,8 @@
 ; IS__TUNIT____-NEXT:  entry:
 ; IS__TUNIT____-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__TUNIT____-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__TUNIT____-NEXT:    [[CALL1:%.*]] = call i32 @noalias_args(i32* nocapture nofree readonly align 4 [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR3]]
-; IS__TUNIT____-NEXT:    [[CALL2:%.*]] = call i32 @noalias_args_argmem(i32* nocapture nofree readonly align 4 [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR3]]
+; IS__TUNIT____-NEXT:    [[CALL1:%.*]] = call i32 @noalias_args(i32* nocapture nofree readonly align 4 [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR3]]
+; IS__TUNIT____-NEXT:    [[CALL2:%.*]] = call i32 @noalias_args_argmem(i32* nocapture nofree readonly align 4 [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR3]]
 ; IS__TUNIT____-NEXT:    [[ADD:%.*]] = add nsw i32 [[CALL1]], [[CALL2]]
 ; IS__TUNIT____-NEXT:    ret i32 [[ADD]]
 ;
@@ -127,8 +127,8 @@
 ; IS__CGSCC_OPM-NEXT:  entry:
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__CGSCC_OPM-NEXT:    [[CALL1:%.*]] = call i32 @noalias_args(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR4]]
-; IS__CGSCC_OPM-NEXT:    [[CALL2:%.*]] = call i32 @noalias_args_argmem(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR4]]
+; IS__CGSCC_OPM-NEXT:    [[CALL1:%.*]] = call i32 @noalias_args(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR4]]
+; IS__CGSCC_OPM-NEXT:    [[CALL2:%.*]] = call i32 @noalias_args_argmem(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR4]]
 ; IS__CGSCC_OPM-NEXT:    [[ADD:%.*]] = add nsw i32 [[CALL1]], [[CALL2]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[ADD]]
 ;
@@ -138,8 +138,8 @@
 ; IS__CGSCC_NPM-NEXT:  entry:
 ; IS__CGSCC_NPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_NPM-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__CGSCC_NPM-NEXT:    [[CALL1:%.*]] = call i32 @noalias_args(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR5]]
-; IS__CGSCC_NPM-NEXT:    [[CALL2:%.*]] = call i32 @noalias_args_argmem(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR5]]
+; IS__CGSCC_NPM-NEXT:    [[CALL1:%.*]] = call i32 @noalias_args(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR5]]
+; IS__CGSCC_NPM-NEXT:    [[CALL2:%.*]] = call i32 @noalias_args_argmem(i32* nocapture nofree nonnull readonly align 4 dereferenceable(4) [[A]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR5]]
 ; IS__CGSCC_NPM-NEXT:    [[ADD:%.*]] = add nsw i32 [[CALL1]], [[CALL2]]
 ; IS__CGSCC_NPM-NEXT:    ret i32 [[ADD]]
 ;
@@ -155,7 +155,7 @@
 define internal i32 @noalias_args_argmem_ro(i32* %A, i32* %B) #1 {
 ; IS__TUNIT_OPM: Function Attrs: argmemonly nofree noinline nosync nounwind readonly uwtable willreturn
 ; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@noalias_args_argmem_ro
-; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B:%.*]]) [[ATTR0:#.*]] {
+; IS__TUNIT_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR0:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[T0:%.*]] = load i32, i32* [[A]], align 4
 ; IS__TUNIT_OPM-NEXT:    [[T1:%.*]] = load i32, i32* [[B]], align 4
 ; IS__TUNIT_OPM-NEXT:    [[ADD:%.*]] = add nsw i32 [[T0]], [[T1]]
@@ -175,7 +175,7 @@
 ;
 ; IS__CGSCC_OPM: Function Attrs: argmemonly nofree noinline norecurse nosync nounwind readonly uwtable willreturn
 ; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@noalias_args_argmem_ro
-; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[A:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B:%.*]]) [[ATTR0]] {
+; IS__CGSCC_OPM-SAME: (i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR0]] {
 ; IS__CGSCC_OPM-NEXT:    [[T0:%.*]] = load i32, i32* [[A]], align 4
 ; IS__CGSCC_OPM-NEXT:    [[T1:%.*]] = load i32, i32* [[B]], align 4
 ; IS__CGSCC_OPM-NEXT:    [[ADD:%.*]] = add nsw i32 [[T0]], [[T1]]
@@ -205,7 +205,7 @@
 ; IS__TUNIT_OPM-SAME: () [[ATTR2:#.*]] {
 ; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__TUNIT_OPM-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__TUNIT_OPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_ro(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR4:#.*]]
+; IS__TUNIT_OPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_ro(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR4:#.*]]
 ; IS__TUNIT_OPM-NEXT:    ret i32 [[CALL]]
 ;
 ; IS__TUNIT_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
@@ -223,7 +223,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR2:#.*]] {
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__CGSCC_OPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_ro(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[B]]) [[ATTR5:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_ro(i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]], i32* noalias nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR5:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[CALL]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -245,14 +245,14 @@
 define internal i32 @noalias_args_argmem_rn(i32* %A, i32* %B) #1 {
 ; IS__TUNIT____: Function Attrs: argmemonly nofree noinline nosync nounwind uwtable willreturn
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@noalias_args_argmem_rn
-; IS__TUNIT____-SAME: (i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[B:%.*]]) [[ATTR1]] {
+; IS__TUNIT____-SAME: (i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR1]] {
 ; IS__TUNIT____-NEXT:    [[T0:%.*]] = load i32, i32* [[B]], align 4
 ; IS__TUNIT____-NEXT:    store i32 0, i32* [[B]], align 4
 ; IS__TUNIT____-NEXT:    ret i32 [[T0]]
 ;
 ; IS__CGSCC____: Function Attrs: argmemonly nofree noinline norecurse nosync nounwind uwtable willreturn
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@noalias_args_argmem_rn
-; IS__CGSCC____-SAME: (i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[B:%.*]]) [[ATTR1:#.*]] {
+; IS__CGSCC____-SAME: (i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[B:%.*]]) [[ATTR1:#.*]] {
 ; IS__CGSCC____-NEXT:    [[T0:%.*]] = load i32, i32* [[B]], align 4
 ; IS__CGSCC____-NEXT:    store i32 0, i32* [[B]], align 4
 ; IS__CGSCC____-NEXT:    ret i32 [[T0]]
@@ -268,7 +268,7 @@
 ; IS__TUNIT____-SAME: () [[ATTR2:#.*]] {
 ; IS__TUNIT____-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__TUNIT____-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__TUNIT____-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_rn(i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[B]]) [[ATTR5:#.*]]
+; IS__TUNIT____-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_rn(i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR5:#.*]]
 ; IS__TUNIT____-NEXT:    ret i32 [[CALL]]
 ;
 ; IS__CGSCC_OPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -276,7 +276,7 @@
 ; IS__CGSCC_OPM-SAME: () [[ATTR2]] {
 ; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_OPM-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__CGSCC_OPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_rn(i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[B]]) [[ATTR6:#.*]]
+; IS__CGSCC_OPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_rn(i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR6:#.*]]
 ; IS__CGSCC_OPM-NEXT:    ret i32 [[CALL]]
 ;
 ; IS__CGSCC_NPM: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
@@ -284,7 +284,7 @@
 ; IS__CGSCC_NPM-SAME: () [[ATTR3]] {
 ; IS__CGSCC_NPM-NEXT:    [[B:%.*]] = alloca i32, align 4
 ; IS__CGSCC_NPM-NEXT:    store i32 5, i32* [[B]], align 4
-; IS__CGSCC_NPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_rn(i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[B]]) [[ATTR7:#.*]]
+; IS__CGSCC_NPM-NEXT:    [[CALL:%.*]] = call i32 @noalias_args_argmem_rn(i32* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[B]]) [[ATTR7:#.*]]
 ; IS__CGSCC_NPM-NEXT:    ret i32 [[CALL]]
 ;
   %B = alloca i32, align 4
diff --git a/llvm/test/Transforms/Attributor/liveness.ll b/llvm/test/Transforms/Attributor/liveness.ll
--- a/llvm/test/Transforms/Attributor/liveness.ll
+++ b/llvm/test/Transforms/Attributor/liveness.ll
@@ -2275,12 +2275,12 @@
 ; FIXME: We have to prevent the propagation of %fp in the new pm CGSCC pass until the CallGraphUpdater can handle the new call edge.
 define internal void @call_via_pointer_with_dead_args_internal_a(i32* %a, i32* %b, void (i32*, i32*, i32*, i64, i32**)* %fp) {
 ; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@call_via_pointer_with_dead_args_internal_a
-; NOT_CGSCC_NPM-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
+; NOT_CGSCC_NPM-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
 ; NOT_CGSCC_NPM-NEXT:    call void @called_via_pointer(i32* [[A]], i32* nonnull align 128 dereferenceable(4) [[B]], i32* [[A]], i64 -1, i32** null)
 ; NOT_CGSCC_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@call_via_pointer_with_dead_args_internal_a
-; IS__CGSCC____-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
+; IS__CGSCC____-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
 ; IS__CGSCC____-NEXT:    call void [[FP]](i32* [[A]], i32* nonnull align 128 dereferenceable(4) [[B]], i32* [[A]], i64 -1, i32** null)
 ; IS__CGSCC____-NEXT:    ret void
 ;
@@ -2289,12 +2289,12 @@
 }
 define internal void @call_via_pointer_with_dead_args_internal_b(i32* %a, i32* %b, void (i32*, i32*, i32*, i64, i32**)* %fp) {
 ; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@call_via_pointer_with_dead_args_internal_b
-; NOT_CGSCC_NPM-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
+; NOT_CGSCC_NPM-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
 ; NOT_CGSCC_NPM-NEXT:    call void @called_via_pointer_internal_2(i32* [[A]], i32* nonnull align 128 dereferenceable(4) [[B]], i32* [[A]], i64 -1, i32** null)
 ; NOT_CGSCC_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@call_via_pointer_with_dead_args_internal_b
-; IS__CGSCC____-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
+; IS__CGSCC____-SAME: (i32* [[A:%.*]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[B:%.*]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull [[FP:%.*]]) {
 ; IS__CGSCC____-NEXT:    call void [[FP]](i32* [[A]], i32* nonnull align 128 dereferenceable(4) [[B]], i32* [[A]], i64 -1, i32** null)
 ; IS__CGSCC____-NEXT:    ret void
 ;
@@ -2308,10 +2308,10 @@
 ; NOT_CGSCC_NPM-NEXT:    [[PTR2:%.*]] = alloca i32, align 128
 ; NOT_CGSCC_NPM-NEXT:    [[PTR3:%.*]] = alloca i32, align 128
 ; NOT_CGSCC_NPM-NEXT:    [[PTR4:%.*]] = alloca i32, align 128
-; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR1]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer)
-; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR2]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer_internal_1)
-; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args_internal_a(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR3]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer)
-; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args_internal_b(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR4]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer_internal_2)
+; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR1]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer)
+; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR2]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer_internal_1)
+; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args_internal_a(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR3]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer)
+; NOT_CGSCC_NPM-NEXT:    call void @call_via_pointer_with_dead_args_internal_b(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR4]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef @called_via_pointer_internal_2)
 ; NOT_CGSCC_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@call_via_pointer_with_dead_args_caller
@@ -2320,10 +2320,10 @@
 ; IS__CGSCC____-NEXT:    [[PTR2:%.*]] = alloca i32, align 128
 ; IS__CGSCC____-NEXT:    [[PTR3:%.*]] = alloca i32, align 128
 ; IS__CGSCC____-NEXT:    [[PTR4:%.*]] = alloca i32, align 128
-; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR1]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer)
-; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR2]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer_internal_1)
-; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args_internal_a(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR3]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer)
-; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args_internal_b(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) [[PTR4]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer_internal_2)
+; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR1]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer)
+; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args(i32* [[A]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR2]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer_internal_1)
+; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args_internal_a(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR3]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer)
+; IS__CGSCC____-NEXT:    call void @call_via_pointer_with_dead_args_internal_b(i32* [[B]], i32* noundef nonnull align 128 dereferenceable(4) maxobjsize(4) [[PTR4]], void (i32*, i32*, i32*, i64, i32**)* nocapture nofree noundef nonnull @called_via_pointer_internal_2)
 ; IS__CGSCC____-NEXT:    ret void
 ;
   %ptr1 = alloca i32, align 128
@@ -2515,7 +2515,7 @@
 ; NOT_CGSCC_NPM-NEXT:  entry:
 ; NOT_CGSCC_NPM-NEXT:    [[N:%.*]] = alloca i8, align 1
 ; NOT_CGSCC_NPM-NEXT:    [[M:%.*]] = alloca i8, align 1
-; NOT_CGSCC_NPM-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) [[N]]) [[ATTR16:#.*]]
+; NOT_CGSCC_NPM-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) maxobjsize(1) [[N]]) [[ATTR16:#.*]]
 ; NOT_CGSCC_NPM-NEXT:    br label [[EXIT:%.*]]
 ; NOT_CGSCC_NPM:       while.body:
 ; NOT_CGSCC_NPM-NEXT:    unreachable
@@ -2524,7 +2524,7 @@
 ; NOT_CGSCC_NPM:       if.end:
 ; NOT_CGSCC_NPM-NEXT:    unreachable
 ; NOT_CGSCC_NPM:       exit:
-; NOT_CGSCC_NPM-NEXT:    call void @llvm.lifetime.end.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) [[N]]) [[ATTR16]]
+; NOT_CGSCC_NPM-NEXT:    call void @llvm.lifetime.end.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) maxobjsize(1) [[N]]) [[ATTR16]]
 ; NOT_CGSCC_NPM-NEXT:    ret void
 ;
 ; IS__CGSCC____: Function Attrs: nounwind readnone willreturn
@@ -2533,7 +2533,7 @@
 ; IS__CGSCC____-NEXT:  entry:
 ; IS__CGSCC____-NEXT:    [[N:%.*]] = alloca i8, align 1
 ; IS__CGSCC____-NEXT:    [[M:%.*]] = alloca i8, align 1
-; IS__CGSCC____-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) [[N]]) [[ATTR17:#.*]]
+; IS__CGSCC____-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) maxobjsize(1) [[N]]) [[ATTR17:#.*]]
 ; IS__CGSCC____-NEXT:    br label [[EXIT:%.*]]
 ; IS__CGSCC____:       while.body:
 ; IS__CGSCC____-NEXT:    unreachable
@@ -2542,7 +2542,7 @@
 ; IS__CGSCC____:       if.end:
 ; IS__CGSCC____-NEXT:    unreachable
 ; IS__CGSCC____:       exit:
-; IS__CGSCC____-NEXT:    call void @llvm.lifetime.end.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) [[N]]) [[ATTR17]]
+; IS__CGSCC____-NEXT:    call void @llvm.lifetime.end.p0i8(i64 noundef 1, i8* noalias nocapture noundef nonnull dereferenceable(1) maxobjsize(1) [[N]]) [[ATTR17]]
 ; IS__CGSCC____-NEXT:    ret void
 ;
 entry:
diff --git a/llvm/test/Transforms/Attributor/memory_locations.ll b/llvm/test/Transforms/Attributor/memory_locations.ll
--- a/llvm/test/Transforms/Attributor/memory_locations.ll
+++ b/llvm/test/Transforms/Attributor/memory_locations.ll
@@ -328,7 +328,7 @@
 ; CHECK-LABEL: define {{[^@]+}}@callerB1
 ; CHECK-SAME: () [[ATTR2:#.*]] {
 ; CHECK-NEXT:    [[STACK:%.*]] = alloca i8, align 1
-; CHECK-NEXT:    [[TMP1:%.*]] = call i8* @argmem_only(i8* noundef nonnull dereferenceable(1) [[STACK]])
+; CHECK-NEXT:    [[TMP1:%.*]] = call i8* @argmem_only(i8* noundef nonnull dereferenceable(1) maxobjsize(1) [[STACK]])
 ; CHECK-NEXT:    ret void
 ;
   %stack = alloca i8
@@ -340,7 +340,7 @@
 ; CHECK-LABEL: define {{[^@]+}}@callerB2
 ; CHECK-SAME: () [[ATTR0]] {
 ; CHECK-NEXT:    [[STACK:%.*]] = alloca i8, align 1
-; CHECK-NEXT:    [[TMP1:%.*]] = call i8* @inaccesible_argmem_only_decl(i8* noundef nonnull dereferenceable(1) [[STACK]])
+; CHECK-NEXT:    [[TMP1:%.*]] = call i8* @inaccesible_argmem_only_decl(i8* noundef nonnull dereferenceable(1) maxobjsize(1) [[STACK]])
 ; CHECK-NEXT:    ret void
 ;
   %stack = alloca i8
@@ -473,13 +473,13 @@
 ; IS__TUNIT____: Function Attrs: nofree nosync nounwind willreturn writeonly
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@writeonly_global_via_arg
 ; IS__TUNIT____-SAME: () [[ATTR6]] {
-; IS__TUNIT____-NEXT:    call void @write_global_via_arg(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) @G) [[ATTR6]]
+; IS__TUNIT____-NEXT:    call void @write_global_via_arg(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) @G) [[ATTR6]]
 ; IS__TUNIT____-NEXT:    ret void
 ;
 ; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@writeonly_global_via_arg
 ; IS__CGSCC____-SAME: () [[ATTR6]] {
-; IS__CGSCC____-NEXT:    call void @write_global_via_arg(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) @G) [[ATTR10]]
+; IS__CGSCC____-NEXT:    call void @write_global_via_arg(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) @G) [[ATTR10]]
 ; IS__CGSCC____-NEXT:    ret void
 ;
   call void @write_global_via_arg(i32* @G)
@@ -511,7 +511,7 @@
 ; IS__TUNIT____-NEXT:    [[ALLOC:%.*]] = alloca i8, align 1
 ; IS__TUNIT____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__TUNIT____:       t:
-; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) [[ATTR10:#.*]]
+; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[ALLOC]], i1 noundef false) [[ATTR10:#.*]]
 ; IS__TUNIT____-NEXT:    [[R:%.*]] = load i8, i8* [[ALLOC]], align 1
 ; IS__TUNIT____-NEXT:    ret i8 [[R]]
 ; IS__TUNIT____:       f:
@@ -524,7 +524,7 @@
 ; IS__CGSCC____-NEXT:    [[ALLOC:%.*]] = alloca i8, align 1
 ; IS__CGSCC____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__CGSCC____:       t:
-; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) [[ATTR11:#.*]]
+; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[ALLOC]], i1 noundef false) [[ATTR11:#.*]]
 ; IS__CGSCC____-NEXT:    [[R:%.*]] = load i8, i8* [[ALLOC]], align 1
 ; IS__CGSCC____-NEXT:    ret i8 [[R]]
 ; IS__CGSCC____:       f:
@@ -549,7 +549,7 @@
 ; IS__TUNIT____-NEXT:    [[ALLOC:%.*]] = alloca i8, align 1
 ; IS__TUNIT____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__TUNIT____:       t:
-; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) [[ATTR10]]
+; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[ALLOC]], i1 noundef false) [[ATTR10]]
 ; IS__TUNIT____-NEXT:    [[R:%.*]] = load i8, i8* [[ALLOC]], align 1
 ; IS__TUNIT____-NEXT:    ret i8 [[R]]
 ; IS__TUNIT____:       f:
@@ -562,7 +562,7 @@
 ; IS__CGSCC____-NEXT:    [[ALLOC:%.*]] = alloca i8, align 1
 ; IS__CGSCC____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__CGSCC____:       t:
-; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) [[ATTR11]]
+; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[ALLOC]], i1 noundef false) [[ATTR11]]
 ; IS__CGSCC____-NEXT:    [[R:%.*]] = load i8, i8* [[ALLOC]], align 1
 ; IS__CGSCC____-NEXT:    ret i8 [[R]]
 ; IS__CGSCC____:       f:
@@ -585,14 +585,14 @@
 ; IS__TUNIT____-LABEL: define {{[^@]+}}@readnone_caller
 ; IS__TUNIT____-SAME: (i1 [[C:%.*]]) [[ATTR9:#.*]] {
 ; IS__TUNIT____-NEXT:    [[A:%.*]] = alloca i8, align 1
-; IS__TUNIT____-NEXT:    [[R:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[A]], i1 [[C]]) [[ATTR10]]
+; IS__TUNIT____-NEXT:    [[R:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[A]], i1 [[C]]) [[ATTR10]]
 ; IS__TUNIT____-NEXT:    ret i8 [[R]]
 ;
 ; IS__CGSCC____: Function Attrs: nofree nosync nounwind readnone
 ; IS__CGSCC____-LABEL: define {{[^@]+}}@readnone_caller
 ; IS__CGSCC____-SAME: (i1 [[C:%.*]]) [[ATTR9:#.*]] {
 ; IS__CGSCC____-NEXT:    [[A:%.*]] = alloca i8, align 1
-; IS__CGSCC____-NEXT:    [[R:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[A]], i1 [[C]]) [[ATTR12:#.*]]
+; IS__CGSCC____-NEXT:    [[R:%.*]] = call i8 @recursive_not_readnone_internal(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[A]], i1 [[C]]) [[ATTR12:#.*]]
 ; IS__CGSCC____-NEXT:    ret i8 [[R]]
 ;
   %a = alloca i8
@@ -607,7 +607,7 @@
 ; IS__TUNIT____-NEXT:    [[ALLOC:%.*]] = alloca i8, align 1
 ; IS__TUNIT____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__TUNIT____:       t:
-; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal2(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) [[ATTR10]]
+; IS__TUNIT____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal2(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[ALLOC]], i1 noundef false) [[ATTR10]]
 ; IS__TUNIT____-NEXT:    [[R:%.*]] = load i8, i8* [[ALLOC]], align 1
 ; IS__TUNIT____-NEXT:    ret i8 [[R]]
 ; IS__TUNIT____:       f:
@@ -620,7 +620,7 @@
 ; IS__CGSCC____-NEXT:    [[ALLOC:%.*]] = alloca i8, align 1
 ; IS__CGSCC____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__CGSCC____:       t:
-; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal2(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) [[ATTR11]]
+; IS__CGSCC____-NEXT:    [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal2(i8* noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) maxobjsize(1) [[ALLOC]], i1 noundef false) [[ATTR11]]
 ; IS__CGSCC____-NEXT:    [[R:%.*]] = load i8, i8* [[ALLOC]], align 1
 ; IS__CGSCC____-NEXT:    ret i8 [[R]]
 ; IS__CGSCC____:       f:
diff --git a/llvm/test/Transforms/Attributor/misc.ll b/llvm/test/Transforms/Attributor/misc.ll
--- a/llvm/test/Transforms/Attributor/misc.ll
+++ b/llvm/test/Transforms/Attributor/misc.ll
@@ -13,7 +13,7 @@
 ; CHECK-SAME: (void (i8*)* nonnull [[FP:%.*]]) {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
-; CHECK-NEXT:    call void @foo(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A]]) [[ATTR1:#.*]]
+; CHECK-NEXT:    call void @foo(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[A]]) [[ATTR1:#.*]]
 ; CHECK-NEXT:    call void [[FP]](i8* bitcast (void (i32*)* @foo to i8*))
 ; CHECK-NEXT:    call void @callback1(void (i32*)* noundef nonnull @foo)
 ; CHECK-NEXT:    call void @callback2(void (i8*)* noundef bitcast (void (i32*)* @foo to void (i8*)*))
@@ -42,7 +42,7 @@
 ; CHECK-SAME: (void (i8*)* [[FP:%.*]]) {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
-; CHECK-NEXT:    call void @foo(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[A]]) [[ATTR1]]
+; CHECK-NEXT:    call void @foo(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[A]]) [[ATTR1]]
 ; CHECK-NEXT:    call void @callback1(void (i32*)* noundef nonnull @foo)
 ; CHECK-NEXT:    call void @callback2(void (i8*)* noundef bitcast (void (i32*)* @foo to void (i8*)*))
 ; CHECK-NEXT:    call void @callback2(void (i8*)* [[FP]])
diff --git a/llvm/test/Transforms/Attributor/misc_crash.ll b/llvm/test/Transforms/Attributor/misc_crash.ll
--- a/llvm/test/Transforms/Attributor/misc_crash.ll
+++ b/llvm/test/Transforms/Attributor/misc_crash.ll
@@ -30,7 +30,7 @@
 }
 
 ; UTC_ARGS: --disable
-; CHECK-LABEL: define internal noundef nonnull align 4 dereferenceable(4) i32* @func1a()
+; CHECK-LABEL: define internal noundef nonnull align 4 dereferenceable(4) maxobjsize(4) i32* @func1a()
 ; CHECK-NEXT: ret i32* getelementptr inbounds ([1 x i32], [1 x i32]* @var1, i32 0, i32 0)
 define internal i32* @func1a([1 x i32]* %arg) {
   %ptr = getelementptr inbounds [1 x i32], [1 x i32]* %arg, i64 0, i64 0
@@ -51,7 +51,7 @@
 
 define i32 @func2() {
 ; CHECK-LABEL: define {{[^@]+}}@func2() {
-; CHECK-NEXT:    [[TMP1:%.*]] = tail call i32 (i32*, ...) bitcast (void (i32*)* @func2a to i32 (i32*, ...)*)(i32* noundef nonnull align 4 dereferenceable(4) @var2)
+; CHECK-NEXT:    [[TMP1:%.*]] = tail call i32 (i32*, ...) bitcast (void (i32*)* @func2a to i32 (i32*, ...)*)(i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) @var2)
 ; CHECK-NEXT:    [[TMP2:%.*]] = load i32, i32* @var2, align 4
 ; CHECK-NEXT:    ret i32 [[TMP2]]
 ;
@@ -63,7 +63,7 @@
 define i32 @func3(i1 %false) {
 ; CHECK-LABEL: define {{[^@]+}}@func3
 ; CHECK-SAME: (i1 [[FALSE:%.*]]) {
-; CHECK-NEXT:    [[TMP1:%.*]] = tail call i32 (i32*, ...) bitcast (void (i32*)* @func2a to i32 (i32*, ...)*)(i32* noundef nonnull align 4 dereferenceable(4) @var2)
+; CHECK-NEXT:    [[TMP1:%.*]] = tail call i32 (i32*, ...) bitcast (void (i32*)* @func2a to i32 (i32*, ...)*)(i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) @var2)
 ; CHECK-NEXT:    br i1 [[FALSE]], label [[USE_BB:%.*]], label [[RET_BB:%.*]]
 ; CHECK:       use_bb:
 ; CHECK-NEXT:    ret i32 [[TMP1]]
diff --git a/llvm/test/Transforms/Attributor/noalias.ll b/llvm/test/Transforms/Attributor/noalias.ll
--- a/llvm/test/Transforms/Attributor/noalias.ll
+++ b/llvm/test/Transforms/Attributor/noalias.ll
@@ -186,7 +186,7 @@
 ; CHECK-NEXT:    store i8 97, i8* [[ARRAYIDX]], align 1
 ; CHECK-NEXT:    [[ARRAYIDX1:%.*]] = getelementptr inbounds [2 x i8], [2 x i8]* [[X]], i64 0, i64 1
 ; CHECK-NEXT:    store i8 0, i8* [[ARRAYIDX1]], align 1
-; CHECK-NEXT:    [[CALL:%.*]] = call noalias i8* @strdup(i8* nocapture noundef nonnull dereferenceable(2) [[ARRAYIDX]]) [[ATTR2]]
+; CHECK-NEXT:    [[CALL:%.*]] = call noalias i8* @strdup(i8* nocapture noundef nonnull dereferenceable(2) maxobjsize(2) [[ARRAYIDX]]) [[ATTR2]]
 ; CHECK-NEXT:    ret i8* [[CALL]]
 ;
   %x = alloca [2 x i8], align 1
@@ -363,8 +363,8 @@
 ; CHECK-LABEL: define {{[^@]+}}@test12_1() {
 ; CHECK-NEXT:    [[A:%.*]] = alloca i8, align 4
 ; CHECK-NEXT:    [[B:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
-; CHECK-NEXT:    tail call void @use_nocapture(i8* noalias nocapture noundef nonnull align 4 dereferenceable(1) [[A]])
-; CHECK-NEXT:    tail call void @use_nocapture(i8* noalias nocapture noundef nonnull align 4 dereferenceable(1) [[A]])
+; CHECK-NEXT:    tail call void @use_nocapture(i8* noalias nocapture noundef nonnull align 4 dereferenceable(1) maxobjsize(1) [[A]])
+; CHECK-NEXT:    tail call void @use_nocapture(i8* noalias nocapture noundef nonnull align 4 dereferenceable(1) maxobjsize(1) [[A]])
 ; CHECK-NEXT:    tail call void @use_nocapture(i8* noalias nocapture [[B]])
 ; CHECK-NEXT:    tail call void @use_nocapture(i8* noalias nocapture [[B]])
 ; CHECK-NEXT:    ret void
@@ -572,18 +572,6 @@
 
 ; Function Attrs: nounwind optsize
 define internal fastcc double @strtox(i8* %s, i8** %p, i32 %prec) unnamed_addr {
-; CHECK-LABEL: define {{[^@]+}}@strtox
-; CHECK-SAME: (i8* noalias [[S:%.*]]) unnamed_addr {
-; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[F:%.*]] = alloca [[STRUCT__IO_FILE:%.*]], align 8
-; CHECK-NEXT:    [[TMP0:%.*]] = bitcast %struct._IO_FILE* [[F]] to i8*
-; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 144, i8* nocapture noundef nonnull align 8 dereferenceable(240) [[TMP0]]) [[ATTR10:#.*]]
-; CHECK-NEXT:    [[CALL:%.*]] = call i32 bitcast (i32 (...)* @sh_fromstring to i32 (%struct._IO_FILE*, i8*)*)(%struct._IO_FILE* nonnull align 8 dereferenceable(240) [[F]], i8* [[S]])
-; CHECK-NEXT:    call void @__shlim(%struct._IO_FILE* noundef nonnull align 8 dereferenceable(240) [[F]], i64 noundef 0)
-; CHECK-NEXT:    [[CALL1:%.*]] = call double @__floatscan(%struct._IO_FILE* noundef nonnull align 8 dereferenceable(240) [[F]], i32 noundef 1, i32 noundef 1)
-; CHECK-NEXT:    call void @llvm.lifetime.end.p0i8(i64 noundef 144, i8* nocapture noundef nonnull align 8 dereferenceable(240) [[TMP0]])
-; CHECK-NEXT:    ret double [[CALL1]]
-;
 entry:
   %f = alloca %struct._IO_FILE, align 8
   %0 = bitcast %struct._IO_FILE* %f to i8*
diff --git a/llvm/test/Transforms/Attributor/noreturn_async.ll b/llvm/test/Transforms/Attributor/noreturn_async.ll
--- a/llvm/test/Transforms/Attributor/noreturn_async.ll
+++ b/llvm/test/Transforms/Attributor/noreturn_async.ll
@@ -86,7 +86,7 @@
 ; CHECK-NOT:  nounwind
 ; CHECK-NEXT: define
 ; CHECK-NEXT:   entry:
-; CHECK-NEXT:   %call3 = call i32 (i8*, ...) @printf(i8* noundef nonnull dereferenceable(18) getelementptr inbounds ([18 x i8], [18 x i8]* @"??_C@_0BC@NKPAGFFJ@Exception?5caught?6?$AA@", i64 0, i64 0))
+; CHECK-NEXT:   %call3 = call i32 (i8*, ...) @printf(i8* noundef nonnull dereferenceable(18) maxobjsize(18) getelementptr inbounds ([18 x i8], [18 x i8]* @"??_C@_0BC@NKPAGFFJ@Exception?5caught?6?$AA@", i64 0, i64 0))
 ; CHECK-NEXT:   call void @"?overflow@@YAXXZ_may_throw"()
 ; CHECK-NEXT:   unreachable
   %call3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @"??_C@_0BC@NKPAGFFJ@Exception?5caught?6?$AA@", i64 0, i64 0))
diff --git a/llvm/test/Transforms/Attributor/noreturn_sync.ll b/llvm/test/Transforms/Attributor/noreturn_sync.ll
--- a/llvm/test/Transforms/Attributor/noreturn_sync.ll
+++ b/llvm/test/Transforms/Attributor/noreturn_sync.ll
@@ -82,7 +82,7 @@
 ; CHECK-NOT:  nounwind
 ; CHECK-NEXT: define
 ; CHECK-NEXT:   entry:
-; CHECK-NEXT:   %call3 = call i32 (i8*, ...) @printf(i8* noundef nonnull dereferenceable(18) getelementptr inbounds ([18 x i8], [18 x i8]* @"??_C@_0BC@NKPAGFFJ@Exception?5caught?6?$AA@", i64 0, i64 0))
+; CHECK-NEXT:   %call3 = call i32 (i8*, ...) @printf(i8* noundef nonnull dereferenceable(18) maxobjsize(18) getelementptr inbounds ([18 x i8], [18 x i8]* @"??_C@_0BC@NKPAGFFJ@Exception?5caught?6?$AA@", i64 0, i64 0))
 ; CHECK-NEXT:   call void @"?overflow@@YAXXZ_may_throw"()
 ; CHECK-NEXT:   unreachable
   %call3 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @"??_C@_0BC@NKPAGFFJ@Exception?5caught?6?$AA@", i64 0, i64 0))
diff --git a/llvm/test/Transforms/Attributor/nosync.ll b/llvm/test/Transforms/Attributor/nosync.ll
--- a/llvm/test/Transforms/Attributor/nosync.ll
+++ b/llvm/test/Transforms/Attributor/nosync.ll
@@ -463,7 +463,7 @@
 ; CHECK: Function Attrs: nounwind
 ; CHECK-LABEL: define {{[^@]+}}@i_totally_sync
 ; CHECK-SAME: () [[ATTR14:#.*]] {
-; CHECK-NEXT:    tail call void @llvm.x86.sse2.clflush(i8* noundef nonnull align 4 dereferenceable(4) bitcast (i32* @a to i8*))
+; CHECK-NEXT:    tail call void @llvm.x86.sse2.clflush(i8* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) bitcast (i32* @a to i8*))
 ; CHECK-NEXT:    ret void
 ;
   tail call void @llvm.x86.sse2.clflush(i8* bitcast (i32* @a to i8*))
diff --git a/llvm/test/Transforms/Attributor/noundef.ll b/llvm/test/Transforms/Attributor/noundef.ll
--- a/llvm/test/Transforms/Attributor/noundef.ll
+++ b/llvm/test/Transforms/Attributor/noundef.ll
@@ -12,7 +12,7 @@
 ; CHECK-LABEL: define {{[^@]+}}@foo() {
 ; CHECK-NEXT:    [[X:%.*]] = alloca i32, align 4
 ; CHECK-NEXT:    call void @unknown()
-; CHECK-NEXT:    call void @bar(i32* noundef nonnull align 4 dereferenceable(4) [[X]])
+; CHECK-NEXT:    call void @bar(i32* noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[X]])
 ; CHECK-NEXT:    ret void
 ;
   %x = alloca i32
diff --git a/llvm/test/Transforms/Attributor/read_write_returned_arguments_scc.ll b/llvm/test/Transforms/Attributor/read_write_returned_arguments_scc.ll
--- a/llvm/test/Transforms/Attributor/read_write_returned_arguments_scc.ll
+++ b/llvm/test/Transforms/Attributor/read_write_returned_arguments_scc.ll
@@ -78,11 +78,11 @@
 ; IS__TUNIT____-NEXT:    store i32 3, i32* [[R0]], align 4
 ; IS__TUNIT____-NEXT:    store i32 5, i32* [[R1]], align 4
 ; IS__TUNIT____-NEXT:    store i32 1, i32* [[W0]], align 4
-; IS__TUNIT____-NEXT:    [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
-; IS__TUNIT____-NEXT:    [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
-; IS__TUNIT____-NEXT:    [[CALL2:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
-; IS__TUNIT____-NEXT:    [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR2]]
-; IS__TUNIT____-NEXT:    [[CALL4:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR2]]
+; IS__TUNIT____-NEXT:    [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
+; IS__TUNIT____-NEXT:    [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
+; IS__TUNIT____-NEXT:    [[CALL2:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
+; IS__TUNIT____-NEXT:    [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR2]]
+; IS__TUNIT____-NEXT:    [[CALL4:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR2]]
 ; IS__TUNIT____-NEXT:    [[CALL5:%.*]] = call i32* @internal_ret0_nw(i32* nofree [[N0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
 ; IS__TUNIT____-NEXT:    br label [[RETURN]]
 ; IS__TUNIT____:       return:
@@ -103,11 +103,11 @@
 ; IS__CGSCC____-NEXT:    store i32 3, i32* [[R0]], align 4
 ; IS__CGSCC____-NEXT:    store i32 5, i32* [[R1]], align 4
 ; IS__CGSCC____-NEXT:    store i32 1, i32* [[W0]], align 4
-; IS__CGSCC____-NEXT:    [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
-; IS__CGSCC____-NEXT:    [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
-; IS__CGSCC____-NEXT:    [[CALL2:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
-; IS__CGSCC____-NEXT:    [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR3]]
-; IS__CGSCC____-NEXT:    [[CALL4:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR3]]
+; IS__CGSCC____-NEXT:    [[CALL:%.*]] = call i32* @internal_ret1_rrw(i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R0]], i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
+; IS__CGSCC____-NEXT:    [[CALL1:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
+; IS__CGSCC____-NEXT:    [[CALL2:%.*]] = call i32* @external_ret2_nrw(i32* nofree [[N0]], i32* nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[R1]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
+; IS__CGSCC____-NEXT:    [[CALL3:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[R0]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR3]]
+; IS__CGSCC____-NEXT:    [[CALL4:%.*]] = call i32* @external_sink_ret2_nrw(i32* nofree [[N0]], i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) maxobjsize(4) [[R1]], i32* nofree nonnull writeonly align 4 dereferenceable(4) "no-capture-maybe-returned" [[W0]]) [[ATTR3]]
 ; IS__CGSCC____-NEXT:    [[CALL5:%.*]] = call i32* @internal_ret0_nw(i32* nofree [[N0]], i32* nofree nonnull align 4 dereferenceable(4) [[W0]]) [[ATTR2]]
 ; IS__CGSCC____-NEXT:    br label [[RETURN]]
 ; IS__CGSCC____:       return:
diff --git a/llvm/test/Transforms/Attributor/readattrs.ll b/llvm/test/Transforms/Attributor/readattrs.ll
--- a/llvm/test/Transforms/Attributor/readattrs.ll
+++ b/llvm/test/Transforms/Attributor/readattrs.ll
@@ -241,7 +241,7 @@
 ; CHECK-LABEL: define {{[^@]+}}@unsound_readnone
 ; CHECK-SAME: (i8* nocapture nofree readnone [[IGNORED:%.*]], i8* [[ESCAPED_THEN_WRITTEN:%.*]]) {
 ; CHECK-NEXT:    [[ADDR:%.*]] = alloca i8*, align 8
-; CHECK-NEXT:    call void @escape_readnone_ptr(i8** noundef nonnull align 8 dereferenceable(8) [[ADDR]], i8* noalias readnone [[ESCAPED_THEN_WRITTEN]])
+; CHECK-NEXT:    call void @escape_readnone_ptr(i8** noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[ADDR]], i8* noalias readnone [[ESCAPED_THEN_WRITTEN]])
 ; CHECK-NEXT:    [[ADDR_LD:%.*]] = load i8*, i8** [[ADDR]], align 8
 ; CHECK-NEXT:    store i8 0, i8* [[ADDR_LD]], align 1
 ; CHECK-NEXT:    ret void
@@ -257,7 +257,7 @@
 ; CHECK-LABEL: define {{[^@]+}}@unsound_readonly
 ; CHECK-SAME: (i8* nocapture nofree readnone [[IGNORED:%.*]], i8* [[ESCAPED_THEN_WRITTEN:%.*]]) {
 ; CHECK-NEXT:    [[ADDR:%.*]] = alloca i8*, align 8
-; CHECK-NEXT:    call void @escape_readonly_ptr(i8** noundef nonnull align 8 dereferenceable(8) [[ADDR]], i8* readonly [[ESCAPED_THEN_WRITTEN]])
+; CHECK-NEXT:    call void @escape_readonly_ptr(i8** noundef nonnull align 8 dereferenceable(8) maxobjsize(8) [[ADDR]], i8* readonly [[ESCAPED_THEN_WRITTEN]])
 ; CHECK-NEXT:    [[ADDR_LD:%.*]] = load i8*, i8** [[ADDR]], align 8
 ; CHECK-NEXT:    store i8 0, i8* [[ADDR_LD]], align 1
 ; CHECK-NEXT:    ret void
diff --git a/llvm/test/Transforms/Attributor/undefined_behavior.ll b/llvm/test/Transforms/Attributor/undefined_behavior.ll
--- a/llvm/test/Transforms/Attributor/undefined_behavior.ll
+++ b/llvm/test/Transforms/Attributor/undefined_behavior.ll
@@ -818,8 +818,8 @@
 ; IS__TUNIT____-NEXT:    [[PTR:%.*]] = alloca i32, align 4
 ; IS__TUNIT____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__TUNIT____:       t:
-; IS__TUNIT____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) [[ATTR7:#.*]]
-; IS__TUNIT____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
+; IS__TUNIT____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]]) [[ATTR7:#.*]]
+; IS__TUNIT____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
 ; IS__TUNIT____-NEXT:    unreachable
 ; IS__TUNIT____:       f:
 ; IS__TUNIT____-NEXT:    unreachable
@@ -832,8 +832,8 @@
 ; IS__CGSCC____-NEXT:    [[PTR:%.*]] = alloca i32, align 4
 ; IS__CGSCC____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__CGSCC____:       t:
-; IS__CGSCC____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) [[ATTR7:#.*]]
-; IS__CGSCC____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
+; IS__CGSCC____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]]) [[ATTR7:#.*]]
+; IS__CGSCC____-NEXT:    call void @arg_nonnull_12(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
 ; IS__CGSCC____-NEXT:    unreachable
 ; IS__CGSCC____:       f:
 ; IS__CGSCC____-NEXT:    unreachable
@@ -865,8 +865,8 @@
 ; IS__TUNIT____-NEXT:    [[PTR:%.*]] = alloca i32, align 4
 ; IS__TUNIT____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__TUNIT____:       t:
-; IS__TUNIT____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) [[ATTR7]]
-; IS__TUNIT____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
+; IS__TUNIT____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]]) [[ATTR7]]
+; IS__TUNIT____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
 ; IS__TUNIT____-NEXT:    unreachable
 ; IS__TUNIT____:       f:
 ; IS__TUNIT____-NEXT:    unreachable
@@ -879,8 +879,8 @@
 ; IS__CGSCC____-NEXT:    [[PTR:%.*]] = alloca i32, align 4
 ; IS__CGSCC____-NEXT:    br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
 ; IS__CGSCC____:       t:
-; IS__CGSCC____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]]) [[ATTR7]]
-; IS__CGSCC____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
+; IS__CGSCC____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]]) [[ATTR7]]
+; IS__CGSCC____-NEXT:    call void @arg_nonnull_12_noundef_2(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) maxobjsize(4) [[PTR]], i32* noalias nocapture nofree noundef writeonly align 536870912 null) [[ATTR7]]
 ; IS__CGSCC____-NEXT:    unreachable
 ; IS__CGSCC____:       f:
 ; IS__CGSCC____-NEXT:    unreachable
diff --git a/llvm/test/Transforms/OpenMP/parallel_deletion.ll b/llvm/test/Transforms/OpenMP/parallel_deletion.ll
--- a/llvm/test/Transforms/OpenMP/parallel_deletion.ll
+++ b/llvm/test/Transforms/OpenMP/parallel_deletion.ll
@@ -1,4 +1,4 @@
-; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes
 ; RUN: opt -S -attributor -openmpopt  < %s | FileCheck %s
 ; RUN: opt -S -passes='attributor,cgscc(openmpopt)'  < %s | FileCheck %s
 ;
@@ -25,9 +25,9 @@
 ;
 ; We delete all but the first of the parallel regions in this test.
 define void @delete_parallel_0() {
-; CHECK-LABEL: define {{[^@]+}}@delete_parallel_0()
+; CHECK-LABEL: define {{[^@]+}}@delete_parallel_0() {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined.willreturn to void (i32*, i32*, ...)*))
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0:@.*]], i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined.willreturn to void (i32*, i32*, ...)*))
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -39,10 +39,11 @@
 }
 
 define internal void @.omp_outlined.willreturn(i32* noalias %.global_tid., i32* noalias %.bound_tid.) {
+; CHECK: Function Attrs: willreturn
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined.willreturn
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) #0
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) [[ATTR0:#.*]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    call void @unknown() #0
+; CHECK-NEXT:    call void @unknown() [[ATTR0]]
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -51,10 +52,11 @@
 }
 
 define internal void @.omp_outlined.willreturn.0(i32* noalias %.global_tid., i32* noalias %.bound_tid.) willreturn {
+; CHECK: Function Attrs: readonly willreturn
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined.willreturn.0
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) #1
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) [[ATTR1:#.*]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    call void @readonly() #4
+; CHECK-NEXT:    call void @readonly() [[ATTR4:#.*]]
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -63,10 +65,11 @@
 }
 
 define internal void @.omp_outlined.willreturn.1(i32* noalias %.global_tid., i32* noalias %.bound_tid.) {
+; CHECK: Function Attrs: nosync readnone willreturn
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined.willreturn.1
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) #2
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) [[ATTR2:#.*]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    call void @readnone() #0
+; CHECK-NEXT:    call void @readnone() [[ATTR0]]
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -75,8 +78,9 @@
 }
 
 define internal void @.omp_outlined.willreturn.2(i32* noalias %.global_tid., i32* noalias %.bound_tid.) {
+; CHECK: Function Attrs: nofree nosync nounwind readnone willreturn
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined.willreturn.2
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) #3
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) [[ATTR3:#.*]] {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    ret void
 ;
@@ -97,11 +101,11 @@
 ;
 ; We delete only the last parallel regions in this test because the others might not return.
 define void @delete_parallel_1() {
-; CHECK-LABEL: define {{[^@]+}}@delete_parallel_1()
+; CHECK-LABEL: define {{[^@]+}}@delete_parallel_1() {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined. to void (i32*, i32*, ...)*))
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined..0 to void (i32*, i32*, ...)*))
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined..1 to void (i32*, i32*, ...)*))
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined. to void (i32*, i32*, ...)*))
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined..0 to void (i32*, i32*, ...)*))
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 noundef 0, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*)* @.omp_outlined..1 to void (i32*, i32*, ...)*))
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -114,7 +118,7 @@
 
 define internal void @.omp_outlined.(i32* noalias %.global_tid., i32* noalias %.bound_tid.) {
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined.
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]])
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    call void @unknown()
 ; CHECK-NEXT:    ret void
@@ -125,10 +129,11 @@
 }
 
 define internal void @.omp_outlined..0(i32* noalias %.global_tid., i32* noalias %.bound_tid.) {
+; CHECK: Function Attrs: readonly
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined..0
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) #4
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) [[ATTR4]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    call void @readonly() #4
+; CHECK-NEXT:    call void @readonly() [[ATTR4]]
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -137,8 +142,9 @@
 }
 
 define internal void @.omp_outlined..1(i32* noalias %.global_tid., i32* noalias %.bound_tid.) {
+; CHECK: Function Attrs: nosync readnone
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined..1
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) #5
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) [[ATTR5:#.*]] {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    call void @readnone()
 ; CHECK-NEXT:    ret void
@@ -149,8 +155,9 @@
 }
 
 define internal void @.omp_outlined..2(i32* noalias %.global_tid., i32* noalias %.bound_tid.) {
+; CHECK: Function Attrs: nofree nosync nounwind readnone willreturn
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined..2
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) #3
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]]) [[ATTR3]] {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    ret void
 ;
@@ -184,16 +191,16 @@
 ; FIXME: We do not realize that `a` is dead and all accesses to it can be removed
 ;        making the parallel regions readonly and deletable.
 define void @delete_parallel_2() {
-; CHECK-LABEL: define {{[^@]+}}@delete_parallel_2()
+; CHECK-LABEL: define {{[^@]+}}@delete_parallel_2() {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
 ; CHECK-NEXT:    [[TMP:%.*]] = bitcast i32* [[A]] to i8*
-; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 4, i8* noundef nonnull align 4 dereferenceable(4) [[TMP]]) #0
+; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 4, i8* noundef nonnull align 4 dereferenceable(4) [[TMP]]) [[ATTR0]]
 ; CHECK-NEXT:    store i32 0, i32* [[A]], align 4
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..3 to void (i32*, i32*, ...)*), i32* nocapture nofree noundef nonnull align 4 dereferenceable(4) [[A]])
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..4 to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull align 4 dereferenceable(4) [[A]])
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..5 to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull align 4 dereferenceable(4) [[A]])
-; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) @0, i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..6 to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull align 4 dereferenceable(4) [[A]])
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..3 to void (i32*, i32*, ...)*), i32* nocapture nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A]])
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..4 to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A]])
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..5 to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A]])
+; CHECK-NEXT:    call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* noundef nonnull align 8 dereferenceable(24) maxobjsize(24) [[GLOB0]], i32 noundef 1, void (i32*, i32*, ...)* noundef bitcast (void (i32*, i32*, i32*)* @.omp_outlined..6 to void (i32*, i32*, ...)*), i32* nocapture noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A]])
 ; CHECK-NEXT:    [[TMP1:%.*]] = bitcast i32* [[A]] to i8*
 ; CHECK-NEXT:    call void @llvm.lifetime.end.p0i8(i64 noundef 4, i8* noundef nonnull [[TMP1]])
 ; CHECK-NEXT:    ret void
@@ -213,10 +220,11 @@
 }
 
 define internal void @.omp_outlined..3(i32* noalias %.global_tid., i32* noalias %.bound_tid., i32* dereferenceable(4) %a) {
+; CHECK: Function Attrs: inaccessiblemem_or_argmemonly nofree nosync nounwind
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined..3
-; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture nofree noundef nonnull align 4 dereferenceable(4) [[A:%.*]]) #6
+; CHECK-SAME: (i32* noalias nocapture nofree readnone [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture nofree noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]]) [[ATTR6:#.*]] {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[CALL:%.*]] = call i32 @omp_get_thread_num() #4
+; CHECK-NEXT:    [[CALL:%.*]] = call i32 @omp_get_thread_num() [[ATTR4]]
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[CALL]], 0
 ; CHECK-NEXT:    br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
 ; CHECK:       if.then:
@@ -244,17 +252,17 @@
 
 define internal void @.omp_outlined..4(i32* noalias %.global_tid., i32* noalias %.bound_tid., i32* dereferenceable(4) %a) {
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined..4
-; CHECK-SAME: (i32* noalias nocapture nonnull readonly align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull align 4 dereferenceable(4) [[A:%.*]])
+; CHECK-SAME: (i32* noalias nocapture nonnull readonly align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]]) {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[TMP:%.*]] = load i32, i32* [[DOTGLOBAL_TID_]], align 4
-; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_master(%struct.ident_t* noundef nonnull @0, i32 [[TMP]])
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_master(%struct.ident_t* noundef nonnull [[GLOB0]], i32 [[TMP]])
 ; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq i32 [[TMP1]], 0
 ; CHECK-NEXT:    br i1 [[TMP2]], label [[OMP_IF_END:%.*]], label [[OMP_IF_THEN:%.*]]
 ; CHECK:       omp_if.then:
 ; CHECK-NEXT:    [[TMP3:%.*]] = load i32, i32* [[A]], align 4
 ; CHECK-NEXT:    [[INC:%.*]] = add nsw i32 [[TMP3]], 1
 ; CHECK-NEXT:    store i32 [[INC]], i32* [[A]], align 4
-; CHECK-NEXT:    call void @__kmpc_end_master(%struct.ident_t* noundef nonnull @0, i32 [[TMP]])
+; CHECK-NEXT:    call void @__kmpc_end_master(%struct.ident_t* noundef nonnull [[GLOB0]], i32 [[TMP]])
 ; CHECK-NEXT:    br label [[OMP_IF_END]]
 ; CHECK:       omp_if.end:
 ; CHECK-NEXT:    ret void
@@ -286,21 +294,21 @@
 
 define internal void @.omp_outlined..5(i32* noalias %.global_tid., i32* noalias %.bound_tid., i32* dereferenceable(4) %a) {
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined..5
-; CHECK-SAME: (i32* noalias nocapture nonnull readonly align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull align 4 dereferenceable(4) [[A:%.*]])
+; CHECK-SAME: (i32* noalias nocapture nonnull readonly align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]]) {
 ; CHECK-NEXT:  entry:
-; CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* noundef nonnull @0)
+; CHECK-NEXT:    [[OMP_GLOBAL_THREAD_NUM:%.*]] = call i32 @__kmpc_global_thread_num(%struct.ident_t* noundef nonnull [[GLOB0]])
 ; CHECK-NEXT:    [[TMP:%.*]] = load i32, i32* [[DOTGLOBAL_TID_]], align 4
-; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_single(%struct.ident_t* noundef nonnull @0, i32 [[TMP]])
+; CHECK-NEXT:    [[TMP1:%.*]] = call i32 @__kmpc_single(%struct.ident_t* noundef nonnull [[GLOB0]], i32 [[TMP]])
 ; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq i32 [[TMP1]], 0
 ; CHECK-NEXT:    br i1 [[TMP2]], label [[OMP_IF_END:%.*]], label [[OMP_IF_THEN:%.*]]
 ; CHECK:       omp_if.then:
 ; CHECK-NEXT:    [[TMP3:%.*]] = load i32, i32* [[A]], align 4
 ; CHECK-NEXT:    [[INC:%.*]] = add nsw i32 [[TMP3]], 1
 ; CHECK-NEXT:    store i32 [[INC]], i32* [[A]], align 4
-; CHECK-NEXT:    call void @__kmpc_end_single(%struct.ident_t* noundef nonnull @0, i32 [[TMP]])
+; CHECK-NEXT:    call void @__kmpc_end_single(%struct.ident_t* noundef nonnull [[GLOB0]], i32 [[TMP]])
 ; CHECK-NEXT:    br label [[OMP_IF_END]]
 ; CHECK:       omp_if.end:
-; CHECK-NEXT:    call void @__kmpc_barrier(%struct.ident_t* noundef nonnull @1, i32 [[OMP_GLOBAL_THREAD_NUM]])
+; CHECK-NEXT:    call void @__kmpc_barrier(%struct.ident_t* noundef nonnull [[GLOB1:@.*]], i32 [[OMP_GLOBAL_THREAD_NUM]])
 ; CHECK-NEXT:    ret void
 ;
 entry:
@@ -324,18 +332,18 @@
 
 define internal void @.omp_outlined..6(i32* noalias %.global_tid., i32* noalias %.bound_tid., i32* dereferenceable(4) %a) {
 ; CHECK-LABEL: define {{[^@]+}}@.omp_outlined..6
-; CHECK-SAME: (i32* noalias nocapture nonnull readonly align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull align 4 dereferenceable(4) [[A:%.*]])
+; CHECK-SAME: (i32* noalias nocapture nonnull readonly align 4 dereferenceable(4) [[DOTGLOBAL_TID_:%.*]], i32* noalias nocapture nofree readnone [[DOTBOUND_TID_:%.*]], i32* nocapture noundef nonnull align 4 dereferenceable(4) maxobjsize(4) [[A:%.*]]) {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[A1:%.*]] = alloca i32, align 4
 ; CHECK-NEXT:    [[DOTOMP_REDUCTION_RED_LIST:%.*]] = alloca [1 x i8*], align 8
 ; CHECK-NEXT:    [[TMP:%.*]] = bitcast i32* [[A1]] to i8*
-; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 4, i8* noundef nonnull align 4 [[TMP]]) #0
+; CHECK-NEXT:    call void @llvm.lifetime.start.p0i8(i64 noundef 4, i8* noundef nonnull align 4 [[TMP]]) [[ATTR0]]
 ; CHECK-NEXT:    store i32 1, i32* [[A1]], align 4
 ; CHECK-NEXT:    [[TMP1:%.*]] = bitcast [1 x i8*]* [[DOTOMP_REDUCTION_RED_LIST]] to i32**
 ; CHECK-NEXT:    store i32* [[A1]], i32** [[TMP1]], align 8
 ; CHECK-NEXT:    [[TMP2:%.*]] = load i32, i32* [[DOTGLOBAL_TID_]], align 4
 ; CHECK-NEXT:    [[TMP3:%.*]] = bitcast [1 x i8*]* [[DOTOMP_REDUCTION_RED_LIST]] to i8*
-; CHECK-NEXT:    [[TMP4:%.*]] = call i32 @__kmpc_reduce_nowait(%struct.ident_t* noundef nonnull @2, i32 [[TMP2]], i32 noundef 1, i64 noundef 8, i8* noundef nonnull align 8 [[TMP3]], void (i8*, i8*)* noundef nonnull @.omp.reduction.reduction_func, [8 x i32]* noundef nonnull @.gomp_critical_user_.reduction.var)
+; CHECK-NEXT:    [[TMP4:%.*]] = call i32 @__kmpc_reduce_nowait(%struct.ident_t* noundef nonnull [[GLOB2:@.*]], i32 [[TMP2]], i32 noundef 1, i64 noundef 8, i8* noundef nonnull align 8 [[TMP3]], void (i8*, i8*)* noundef nonnull @.omp.reduction.reduction_func, [8 x i32]* noundef nonnull @.gomp_critical_user_.reduction.var)
 ; CHECK-NEXT:    switch i32 [[TMP4]], label [[DOTOMP_REDUCTION_DEFAULT:%.*]] [
 ; CHECK-NEXT:    i32 1, label [[DOTOMP_REDUCTION_CASE1:%.*]]
 ; CHECK-NEXT:    i32 2, label [[DOTOMP_REDUCTION_CASE2:%.*]]
@@ -345,7 +353,7 @@
 ; CHECK-NEXT:    [[TMP6:%.*]] = load i32, i32* [[A1]], align 4
 ; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP5]], [[TMP6]]
 ; CHECK-NEXT:    store i32 [[ADD]], i32* [[A]], align 4
-; CHECK-NEXT:    call void @__kmpc_end_reduce_nowait(%struct.ident_t* noundef nonnull @2, i32 [[TMP2]], [8 x i32]* noundef nonnull @.gomp_critical_user_.reduction.var)
+; CHECK-NEXT:    call void @__kmpc_end_reduce_nowait(%struct.ident_t* noundef nonnull [[GLOB2]], i32 [[TMP2]], [8 x i32]* noundef nonnull @.gomp_critical_user_.reduction.var)
 ; CHECK-NEXT:    br label [[DOTOMP_REDUCTION_DEFAULT]]
 ; CHECK:       .omp.reduction.case2:
 ; CHECK-NEXT:    [[TMP7:%.*]] = load i32, i32* [[A1]], align 4
@@ -392,8 +400,9 @@
 }
 
 define internal void @.omp.reduction.reduction_func(i8* %arg, i8* %arg1) {
+; CHECK: Function Attrs: nofree nosync nounwind willreturn
 ; CHECK-LABEL: define {{[^@]+}}@.omp.reduction.reduction_func
-; CHECK-SAME: (i8* nocapture nofree nonnull readonly align 8 dereferenceable(8) [[ARG:%.*]], i8* nocapture nofree nonnull readonly align 8 dereferenceable(8) [[ARG1:%.*]]) #{{[0-9]+}}
+; CHECK-SAME: (i8* nocapture nofree nonnull readonly align 8 dereferenceable(8) [[ARG:%.*]], i8* nocapture nofree nonnull readonly align 8 dereferenceable(8) [[ARG1:%.*]]) [[ATTR9:#.*]] {
 ; CHECK-NEXT:  entry:
 ; CHECK-NEXT:    [[TMP:%.*]] = bitcast i8* [[ARG1]] to i32**
 ; CHECK-NEXT:    [[TMP2:%.*]] = load i32*, i32** [[TMP]], align 8