Retire llvm::alignOf in favor of C++11 alignof.

No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284733 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ADT/IntervalMap.h

@@ -1041,7 +1041,7 @@ class IntervalMap {
 
 public:
   explicit IntervalMap(Allocator &a) : height(0), rootSize(0), allocator(a) {
-    assert((uintptr_t(data.buffer) & (alignOf<RootLeaf>() - 1)) == 0 &&
+    assert((uintptr_t(data.buffer) & (alignof(RootLeaf) - 1)) == 0 &&
            "Insufficient alignment");
     new(&rootLeaf()) RootLeaf();
   }

include/llvm/ADT/StringMap.h

@@ -157,7 +157,7 @@ class StringMapEntry : public StringMapEntryBase {
     // terminator.
     unsigned AllocSize = static_cast<unsigned>(sizeof(StringMapEntry))+
       KeyLength+1;
-    unsigned Alignment = alignOf<StringMapEntry>();
+    unsigned Alignment = alignof(StringMapEntry);
 
     StringMapEntry *NewItem =
       static_cast<StringMapEntry*>(Allocator.Allocate(AllocSize,Alignment));

include/llvm/CodeGen/LiveInterval.h

@@ -23,7 +23,6 @@
 
 #include "llvm/ADT/IntEqClasses.h"
 #include "llvm/CodeGen/SlotIndexes.h"
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include <cassert>

include/llvm/CodeGen/SelectionDAG.h

@@ -183,8 +183,8 @@ class SelectionDAG {
   /// The AllocatorType for allocating SDNodes. We use
   /// pool allocation with recycling.
   typedef RecyclingAllocator<BumpPtrAllocator, SDNode, sizeof(LargestSDNode),
-                             AlignOf<MostAlignedSDNode>::Alignment>
-    NodeAllocatorType;
+                             alignof(MostAlignedSDNode)>
+      NodeAllocatorType;
 
   /// Pool allocation for nodes.
   NodeAllocatorType NodeAllocator;

include/llvm/CodeGen/SlotIndexes.h

@@ -346,9 +346,8 @@ namespace llvm {
 
     IndexListEntry* createEntry(MachineInstr *mi, unsigned index) {
       IndexListEntry *entry =
-        static_cast<IndexListEntry*>(
-          ileAllocator.Allocate(sizeof(IndexListEntry),
-          alignOf<IndexListEntry>()));
+          static_cast<IndexListEntry *>(ileAllocator.Allocate(
+              sizeof(IndexListEntry), alignof(IndexListEntry)));
 
       new (entry) IndexListEntry(mi, index);
 

include/llvm/IR/DerivedTypes.h

@@ -138,7 +138,7 @@ class FunctionType : public Type {
     return T->getTypeID() == FunctionTyID;
   }
 };
-static_assert(AlignOf<FunctionType>::Alignment >= AlignOf<Type *>::Alignment,
+static_assert(alignof(FunctionType) >= alignof(Type *),
               "Alignment sufficient for objects appended to FunctionType");
 
 bool Type::isFunctionVarArg() const {

include/llvm/IR/User.h

@@ -22,7 +22,6 @@
 #include "llvm/ADT/iterator.h"
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/IR/Value.h"
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/ErrorHandling.h"
 
 namespace llvm {
@@ -250,9 +249,9 @@ class User : public Value {
   }
 };
 // Either Use objects, or a Use pointer can be prepended to User.
-static_assert(AlignOf<Use>::Alignment >= AlignOf<User>::Alignment,
+static_assert(alignof(Use) >= alignof(User),
               "Alignment is insufficient after objects prepended to User");
-static_assert(AlignOf<Use *>::Alignment >= AlignOf<User>::Alignment,
+static_assert(alignof(Use *) >= alignof(User),
               "Alignment is insufficient after objects prepended to User");
 
 template<> struct simplify_type<User::op_iterator> {

include/llvm/Object/ELF.h

@@ -337,7 +337,7 @@ ELFFile<ELFT>::ELFFile(StringRef Object, std::error_code &EC)
     return;
   }
 
-  if (SectionTableOffset & (AlignOf<Elf_Shdr>::Alignment - 1)) {
+  if (SectionTableOffset & (alignof(Elf_Shdr) - 1)) {
     // Invalid address alignment of section headers
     EC = object_error::parse_failed;
     return;

include/llvm/Support/Allocator.h

@@ -22,7 +22,6 @@
 #define LLVM_SUPPORT_ALLOCATOR_H
 
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/Memory.h"
@@ -74,7 +73,7 @@ template <typename DerivedT> class AllocatorBase {
 
   /// \brief Allocate space for a sequence of objects without constructing them.
   template <typename T> T *Allocate(size_t Num = 1) {
-    return static_cast<T *>(Allocate(Num * sizeof(T), AlignOf<T>::Alignment));
+    return static_cast<T *>(Allocate(Num * sizeof(T), alignof(T)));
   }
 
   /// \brief Deallocate space for a sequence of objects without constructing them.
@@ -381,7 +380,7 @@ template <typename T> class SpecificBumpPtrAllocator {
   /// all memory allocated so far.
   void DestroyAll() {
     auto DestroyElements = [](char *Begin, char *End) {
-      assert(Begin == (char*)alignAddr(Begin, alignOf<T>()));
+      assert(Begin == (char *)alignAddr(Begin, alignof(T)));
       for (char *Ptr = Begin; Ptr + sizeof(T) <= End; Ptr += sizeof(T))
         reinterpret_cast<T *>(Ptr)->~T();
     };
@@ -390,7 +389,7 @@ template <typename T> class SpecificBumpPtrAllocator {
          ++I) {
       size_t AllocatedSlabSize = BumpPtrAllocator::computeSlabSize(
           std::distance(Allocator.Slabs.begin(), I));
-      char *Begin = (char*)alignAddr(*I, alignOf<T>());
+      char *Begin = (char *)alignAddr(*I, alignof(T));
       char *End = *I == Allocator.Slabs.back() ? Allocator.CurPtr
                                                : (char *)*I + AllocatedSlabSize;
 
@@ -400,7 +399,7 @@ template <typename T> class SpecificBumpPtrAllocator {
     for (auto &PtrAndSize : Allocator.CustomSizedSlabs) {
       void *Ptr = PtrAndSize.first;
       size_t Size = PtrAndSize.second;
-      DestroyElements((char*)alignAddr(Ptr, alignOf<T>()), (char *)Ptr + Size);
+      DestroyElements((char *)alignAddr(Ptr, alignof(T)), (char *)Ptr + Size);
     }
 
     Allocator.Reset();

include/llvm/Support/ArrayRecycler.h

@@ -26,15 +26,14 @@ namespace llvm {
 /// Arrays are allocated in a small number of fixed sizes. For each supported
 /// array size, the ArrayRecycler keeps a free list of available arrays.
 ///
-template<class T, size_t Align = AlignOf<T>::Alignment>
-class ArrayRecycler {
+template <class T, size_t Align = alignof(T)> class ArrayRecycler {
   // The free list for a given array size is a simple singly linked list.
   // We can't use iplist or Recycler here since those classes can't be copied.
   struct FreeList {
     FreeList *Next;
   };
 
-  static_assert(Align >= AlignOf<FreeList>::Alignment, "Object underaligned");
+  static_assert(Align >= alignof(FreeList), "Object underaligned");
   static_assert(sizeof(T) >= sizeof(FreeList), "Objects are too small");
 
   // Keep a free list for each array size.

include/llvm/Support/Endian.h

@@ -14,7 +14,6 @@
 #ifndef LLVM_SUPPORT_ENDIAN_H
 #define LLVM_SUPPORT_ENDIAN_H
 
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/Host.h"
 #include "llvm/Support/SwapByteOrder.h"
 
@@ -29,7 +28,7 @@ namespace detail {
   /// \brief ::value is either alignment, or alignof(T) if alignment is 0.
   template<class T, int alignment>
   struct PickAlignment {
-    enum {value = alignment == 0 ? AlignOf<T>::Alignment : alignment};
+    enum { value = alignment == 0 ? alignof(T) : alignment };
   };
 } // end namespace detail
 

include/llvm/Support/OnDiskHashTable.h

@@ -14,7 +14,6 @@
 #ifndef LLVM_SUPPORT_ONDISKHASHTABLE_H
 #define LLVM_SUPPORT_ONDISKHASHTABLE_H
 
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/EndianStream.h"
@@ -208,7 +207,7 @@ template <typename Info> class OnDiskChainedHashTableGenerator {
 
     // Pad with zeros so that we can start the hashtable at an aligned address.
     offset_type TableOff = Out.tell();
-    uint64_t N = llvm::OffsetToAlignment(TableOff, alignOf<offset_type>());
+    uint64_t N = llvm::OffsetToAlignment(TableOff, alignof(offset_type));
     TableOff += N;
     while (N--)
       LE.write<uint8_t>(0);

include/llvm/Support/PointerLikeTypeTraits.h

@@ -15,8 +15,8 @@
 #ifndef LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
 #define LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
 
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/DataTypes.h"
+#include <type_traits>
 
 namespace llvm {
 
@@ -42,9 +42,7 @@ template <typename T> class PointerLikeTypeTraits<T *> {
   static inline void *getAsVoidPointer(T *P) { return P; }
   static inline T *getFromVoidPointer(void *P) { return static_cast<T *>(P); }
 
-  enum {
-    NumLowBitsAvailable = detail::ConstantLog2<AlignOf<T>::Alignment>::value
-  };
+  enum { NumLowBitsAvailable = detail::ConstantLog2<alignof(T)>::value };
 };
 
 template <> class PointerLikeTypeTraits<void *> {

include/llvm/Support/Recycler.h

@@ -16,7 +16,6 @@
 #define LLVM_SUPPORT_RECYCLER_H
 
 #include "llvm/ADT/ilist.h"
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/ErrorHandling.h"
 #include <cassert>
@@ -32,7 +31,7 @@ void PrintRecyclerStats(size_t Size, size_t Align, size_t FreeListSize);
 /// and facilitates reusing deallocated memory in place of allocating
 /// new memory.
 ///
-template<class T, size_t Size = sizeof(T), size_t Align = AlignOf<T>::Alignment>
+template <class T, size_t Size = sizeof(T), size_t Align = alignof(T)>
 class Recycler {
   struct FreeNode {
     FreeNode *Next;
@@ -80,7 +79,7 @@ class Recycler {
 
   template<class SubClass, class AllocatorType>
   SubClass *Allocate(AllocatorType &Allocator) {
-    static_assert(AlignOf<SubClass>::Alignment <= Align,
+    static_assert(alignof(SubClass) <= Align,
                   "Recycler allocation alignment is less than object align!");
     static_assert(sizeof(SubClass) <= Size,
                   "Recycler allocation size is less than object size!");

include/llvm/Support/RecyclingAllocator.h

@@ -22,8 +22,8 @@ namespace llvm {
 /// RecyclingAllocator - This class wraps an Allocator, adding the
 /// functionality of recycling deleted objects.
 ///
-template<class AllocatorType, class T,
-         size_t Size = sizeof(T), size_t Align = AlignOf<T>::Alignment>
+template <class AllocatorType, class T, size_t Size = sizeof(T),
+          size_t Align = alignof(T)>
 class RecyclingAllocator {
 private:
   /// Base - Implementation details.

include/llvm/Support/TrailingObjects.h

@@ -62,7 +62,7 @@ namespace trailing_objects_internal {
 template <typename First, typename... Rest> class AlignmentCalcHelper {
 private:
   enum {
-    FirstAlignment = AlignOf<First>::Alignment,
+    FirstAlignment = alignof(First),
     RestAlignment = AlignmentCalcHelper<Rest...>::Alignment,
   };
 
@@ -74,7 +74,7 @@ template <typename First, typename... Rest> class AlignmentCalcHelper {
 
 template <typename First> class AlignmentCalcHelper<First> {
 public:
-  enum { Alignment = AlignOf<First>::Alignment };
+  enum { Alignment = alignof(First) };
 };
 
 /// The base class for TrailingObjects* classes.
@@ -143,8 +143,7 @@ class TrailingObjectsImpl<Align, BaseTy, TopTrailingObj, PrevTy, NextTy,
       ParentType;
 
   struct RequiresRealignment {
-    static const bool value =
-        llvm::AlignOf<PrevTy>::Alignment < llvm::AlignOf<NextTy>::Alignment;
+    static const bool value = alignof(PrevTy) < alignof(NextTy);
   };
 
   static LLVM_CONSTEXPR bool requiresRealignment() {
@@ -174,7 +173,7 @@ class TrailingObjectsImpl<Align, BaseTy, TopTrailingObj, PrevTy, NextTy,
 
     if (requiresRealignment())
       return reinterpret_cast<const NextTy *>(
-          llvm::alignAddr(Ptr, llvm::alignOf<NextTy>()));
+          llvm::alignAddr(Ptr, alignof(NextTy)));
     else
       return reinterpret_cast<const NextTy *>(Ptr);
   }
@@ -188,8 +187,7 @@ class TrailingObjectsImpl<Align, BaseTy, TopTrailingObj, PrevTy, NextTy,
                     Obj, TrailingObjectsBase::OverloadToken<PrevTy>());
 
     if (requiresRealignment())
-      return reinterpret_cast<NextTy *>(
-          llvm::alignAddr(Ptr, llvm::alignOf<NextTy>()));
+      return reinterpret_cast<NextTy *>(llvm::alignAddr(Ptr, alignof(NextTy)));
     else
       return reinterpret_cast<NextTy *>(Ptr);
   }
@@ -201,9 +199,8 @@ class TrailingObjectsImpl<Align, BaseTy, TopTrailingObj, PrevTy, NextTy,
       size_t SizeSoFar, size_t Count1,
       typename ExtractSecondType<MoreTys, size_t>::type... MoreCounts) {
     return ParentType::additionalSizeToAllocImpl(
-        (requiresRealignment()
-             ? llvm::alignTo<llvm::AlignOf<NextTy>::Alignment>(SizeSoFar)
-             : SizeSoFar) +
+        (requiresRealignment() ? llvm::alignTo<alignof(NextTy)>(SizeSoFar)
+                               : SizeSoFar) +
             sizeof(NextTy) * Count1,
         MoreCounts...);
   }
@@ -216,10 +213,9 @@ class TrailingObjectsImpl<Align, BaseTy, TopTrailingObj, PrevTy, NextTy,
     static_assert(sizeof...(MoreTys) == sizeof...(MoreCounts),
                   "Number of counts do not match number of types");
     static const size_t value = ParentType::template AdditionalSizeToAllocImpl<
-        (RequiresRealignment::value
-             ? llvm::AlignTo<llvm::AlignOf<NextTy>::Alignment>::
-                   template from_value<SizeSoFar>::value
-             : SizeSoFar) +
+        (RequiresRealignment::value ? llvm::AlignTo<alignof(NextTy)>::
+                                          template from_value<SizeSoFar>::value
+                                    : SizeSoFar) +
             sizeof(NextTy) * Count1,
         MoreCounts...>::value;
   };
@@ -407,9 +403,7 @@ class TrailingObjects : private trailing_objects_internal::TrailingObjectsImpl<
       enum {
         Size = TotalSizeToAlloc<Tys...>::template with_counts<Counts...>::value
       };
-      typedef llvm::AlignedCharArray<
-          llvm::AlignOf<BaseTy>::Alignment, Size
-          > type;
+      typedef llvm::AlignedCharArray<alignof(BaseTy), Size> type;
     };
   };
 

include/llvm/Transforms/Utils/SSAUpdaterImpl.h

@@ -120,9 +120,8 @@ class SSAUpdaterImpl {
       if (Info->NumPreds == 0)
         Info->Preds = nullptr;
       else
-        Info->Preds = static_cast<BBInfo**>
-          (Allocator.Allocate(Info->NumPreds * sizeof(BBInfo*),
-                              AlignOf<BBInfo*>::Alignment));
+        Info->Preds = static_cast<BBInfo **>(Allocator.Allocate(
+            Info->NumPreds * sizeof(BBInfo *), alignof(BBInfo *)));
 
       for (unsigned p = 0; p != Info->NumPreds; ++p) {
         BlkT *Pred = Preds[p];

lib/Analysis/GlobalsModRef.cpp

@@ -78,7 +78,7 @@ class GlobalsAAResult::FunctionInfo {
       return (AlignedMap *)P;
     }
     enum { NumLowBitsAvailable = 3 };
-    static_assert(AlignOf<AlignedMap>::Alignment >= (1 << NumLowBitsAvailable),
+    static_assert(alignof(AlignedMap) >= (1 << NumLowBitsAvailable),
                   "AlignedMap insufficiently aligned to have enough low bits.");
   };
 

lib/CodeGen/MachineSSAUpdater.cpp

@@ -18,7 +18,6 @@
 #include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/CodeGen/MachineInstrBuilder.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
-#include "llvm/Support/AlignOf.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"

lib/IR/Metadata.cpp

@@ -434,15 +434,15 @@ StringRef MDString::getString() const {
 // prepended to them.
 #define HANDLE_MDNODE_LEAF(CLASS)                                              \
   static_assert(                                                               \
-      llvm::AlignOf<uint64_t>::Alignment >= llvm::AlignOf<CLASS>::Alignment,   \
+      alignof(uint64_t) >= alignof(CLASS),                                     \
       "Alignment is insufficient after objects prepended to " #CLASS);
 #include "llvm/IR/Metadata.def"
 
 void *MDNode::operator new(size_t Size, unsigned NumOps) {
   size_t OpSize = NumOps * sizeof(MDOperand);
   // uint64_t is the most aligned type we need support (ensured by static_assert
   // above)
-  OpSize = alignTo(OpSize, llvm::alignOf<uint64_t>());
+  OpSize = alignTo(OpSize, alignof(uint64_t));
   void *Ptr = reinterpret_cast<char *>(::operator new(OpSize + Size)) + OpSize;
   MDOperand *O = static_cast<MDOperand *>(Ptr);
   for (MDOperand *E = O - NumOps; O != E; --O)
@@ -453,7 +453,7 @@ void *MDNode::operator new(size_t Size, unsigned NumOps) {
 void MDNode::operator delete(void *Mem) {
   MDNode *N = static_cast<MDNode *>(Mem);
   size_t OpSize = N->NumOperands * sizeof(MDOperand);
-  OpSize = alignTo(OpSize, llvm::alignOf<uint64_t>());
+  OpSize = alignTo(OpSize, alignof(uint64_t));
 
   MDOperand *O = static_cast<MDOperand *>(Mem);
   for (MDOperand *E = O - N->NumOperands; O != E; --O)

lib/IR/Type.cpp

@@ -296,9 +296,9 @@ FunctionType *FunctionType::get(Type *ReturnType,
   FunctionType *FT;
 
   if (I == pImpl->FunctionTypes.end()) {
-    FT = (FunctionType*) pImpl->TypeAllocator.
-      Allocate(sizeof(FunctionType) + sizeof(Type*) * (Params.size() + 1),
-               AlignOf<FunctionType>::Alignment);
+    FT = (FunctionType *)pImpl->TypeAllocator.Allocate(
+        sizeof(FunctionType) + sizeof(Type *) * (Params.size() + 1),
+        alignof(FunctionType));
     new (FT) FunctionType(ReturnType, Params, isVarArg);
     pImpl->FunctionTypes.insert(FT);
   } else {