llvm/lib/IR/AttributeImpl.h: Move comment block not to cover typedef, introduced...

[oota-llvm.git] / lib / IR / AttributeImpl.h

diff --git a/lib/IR/AttributeImpl.h b/lib/IR/AttributeImpl.h
index 7bf9e8ab6baecf3138e2d66b045617a8c6a0a6a5..659f9568b7c6cf0ca96617c7003547ea7a7226df 100644 (file)
--- a/lib/IR/AttributeImpl.h
+++ b/lib/IR/AttributeImpl.h
@@ -13,11 +13,12 @@
 ///
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_ATTRIBUTESIMPL_H
-#define LLVM_ATTRIBUTESIMPL_H
+#ifndef LLVM_LIB_IR_ATTRIBUTEIMPL_H
+#define LLVM_LIB_IR_ATTRIBUTEIMPL_H
 
 #include "llvm/ADT/FoldingSet.h"
 #include "llvm/IR/Attributes.h"
+#include "llvm/Support/TrailingObjects.h"
 #include <string>
 
 namespace llvm {
@@ -33,13 +34,13 @@ class AttributeImpl : public FoldingSetNode {
   unsigned char KindID; ///< Holds the AttrEntryKind of the attribute
 
   // AttributesImpl is uniqued, these should not be publicly available.
-  void operator=(const AttributeImpl &) LLVM_DELETED_FUNCTION;
-  AttributeImpl(const AttributeImpl &) LLVM_DELETED_FUNCTION;
+  void operator=(const AttributeImpl &) = delete;
+  AttributeImpl(const AttributeImpl &) = delete;
 
 protected:
   enum AttrEntryKind {
     EnumAttrEntry,
-    AlignAttrEntry,
+    IntAttrEntry,
     StringAttrEntry
   };
 
@@ -49,7 +50,7 @@ public:
   virtual ~AttributeImpl();
 
   bool isEnumAttribute() const { return KindID == EnumAttrEntry; }
-  bool isAlignAttribute() const { return KindID == AlignAttrEntry; }
+  bool isIntAttribute() const { return KindID == IntAttrEntry; }
   bool isStringAttribute() const { return KindID == StringAttrEntry; }
 
   bool hasAttribute(Attribute::AttrKind A) const;
@@ -67,7 +68,7 @@ public:
   void Profile(FoldingSetNodeID &ID) const {
     if (isEnumAttribute())
       Profile(ID, getKindAsEnum(), 0);
-    else if (isAlignAttribute())
+    else if (isIntAttribute())
       Profile(ID, getKindAsEnum(), getValueAsInt());
     else
       Profile(ID, getKindAsString(), getValueAsString());
@@ -94,6 +95,7 @@ public:
 /// attribute enties, which are for target-dependent attributes.
 
 class EnumAttributeImpl : public AttributeImpl {
+  virtual void anchor();
   Attribute::AttrKind Kind;
 
 protected:
@@ -107,21 +109,24 @@ public:
   Attribute::AttrKind getEnumKind() const { return Kind; }
 };
 
-class AlignAttributeImpl : public EnumAttributeImpl {
-  unsigned Align;
+class IntAttributeImpl : public EnumAttributeImpl {
+  void anchor() override;
+  uint64_t Val;
 
 public:
-  AlignAttributeImpl(Attribute::AttrKind Kind, unsigned Align)
-      : EnumAttributeImpl(AlignAttrEntry, Kind), Align(Align) {
-    assert(
-        (Kind == Attribute::Alignment || Kind == Attribute::StackAlignment) &&
-        "Wrong kind for alignment attribute!");
+  IntAttributeImpl(Attribute::AttrKind Kind, uint64_t Val)
+      : EnumAttributeImpl(IntAttrEntry, Kind), Val(Val) {
+    assert((Kind == Attribute::Alignment || Kind == Attribute::StackAlignment ||
+            Kind == Attribute::Dereferenceable ||
+            Kind == Attribute::DereferenceableOrNull) &&
+           "Wrong kind for int attribute!");
   }
 
-  unsigned getAlignment() const { return Align; }
+  uint64_t getValue() const { return Val; }
 };
 
 class StringAttributeImpl : public AttributeImpl {
+  virtual void anchor();
   std::string Kind;
   std::string Val;
 
@@ -137,18 +142,21 @@ public:
 /// \class
 /// \brief This class represents a group of attributes that apply to one
 /// element: function, return type, or parameter.
-class AttributeSetNode : public FoldingSetNode {
+class AttributeSetNode final
+    : public FoldingSetNode,
+      private TrailingObjects<AttributeSetNode, Attribute> {
+  friend TrailingObjects;
+
   unsigned NumAttrs; ///< Number of attributes in this node.
 
   AttributeSetNode(ArrayRef<Attribute> Attrs) : NumAttrs(Attrs.size()) {
     // There's memory after the node where we can store the entries in.
-    std::copy(Attrs.begin(), Attrs.end(),
-              reinterpret_cast<Attribute *>(this + 1));
+    std::copy(Attrs.begin(), Attrs.end(), getTrailingObjects<Attribute>());
   }
 
   // AttributesSetNode is uniqued, these should not be publicly available.
-  void operator=(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
-  AttributeSetNode(const AttributeSetNode &) LLVM_DELETED_FUNCTION;
+  void operator=(const AttributeSetNode &) = delete;
+  AttributeSetNode(const AttributeSetNode &) = delete;
 public:
   static AttributeSetNode *get(LLVMContext &C, ArrayRef<Attribute> Attrs);
 
@@ -161,10 +169,12 @@ public:
 
   unsigned getAlignment() const;
   unsigned getStackAlignment() const;
+  uint64_t getDereferenceableBytes() const;
+  uint64_t getDereferenceableOrNullBytes() const;
   std::string getAsString(bool InAttrGrp) const;
 
   typedef const Attribute *iterator;
-  iterator begin() const { return reinterpret_cast<iterator>(this + 1); }
+  iterator begin() const { return getTrailingObjects<Attribute>(); }
   iterator end() const { return begin() + NumAttrs; }
 
   void Profile(FoldingSetNodeID &ID) const {
@@ -176,30 +186,38 @@ public:
   }
 };
 
+typedef std::pair<unsigned, AttributeSetNode *> IndexAttrPair;
+
 //===----------------------------------------------------------------------===//
 /// \class
 /// \brief This class represents a set of attributes that apply to the function,
 /// return type, and parameters.
-class AttributeSetImpl : public FoldingSetNode {
+class AttributeSetImpl final
+    : public FoldingSetNode,
+      private TrailingObjects<AttributeSetImpl, IndexAttrPair> {
   friend class AttributeSet;
+  friend TrailingObjects;
 
+private:
   LLVMContext &Context;
-
-  typedef std::pair<unsigned, AttributeSetNode*> IndexAttrPair;
   unsigned NumAttrs; ///< Number of entries in this set.
 
+  // Helper fn for TrailingObjects class.
+  size_t numTrailingObjects(OverloadToken<IndexAttrPair>) { return NumAttrs; }
+
   /// \brief Return a pointer to the IndexAttrPair for the specified slot.
   const IndexAttrPair *getNode(unsigned Slot) const {
-    return reinterpret_cast<const IndexAttrPair *>(this + 1) + Slot;
+    return getTrailingObjects<IndexAttrPair>() + Slot;
   }
 
   // AttributesSet is uniqued, these should not be publicly available.
-  void operator=(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
-  AttributeSetImpl(const AttributeSetImpl &) LLVM_DELETED_FUNCTION;
+  void operator=(const AttributeSetImpl &) = delete;
+  AttributeSetImpl(const AttributeSetImpl &) = delete;
 public:
   AttributeSetImpl(LLVMContext &C,
                    ArrayRef<std::pair<unsigned, AttributeSetNode *> > Attrs)
       : Context(C), NumAttrs(Attrs.size()) {
+
 #ifndef NDEBUG
     if (Attrs.size() >= 2) {
       for (const std::pair<unsigned, AttributeSetNode *> *i = Attrs.begin() + 1,
@@ -210,8 +228,7 @@ public:
     }
 #endif
     // There's memory after the node where we can store the entries in.
-    std::copy(Attrs.begin(), Attrs.end(),
-              reinterpret_cast<IndexAttrPair *>(this + 1));
+    std::copy(Attrs.begin(), Attrs.end(), getTrailingObjects<IndexAttrPair>());
   }
 
   /// \brief Get the context that created this AttributeSetImpl.
@@ -258,6 +275,8 @@ public:
 
   // FIXME: This atrocity is temporary.
   uint64_t Raw(unsigned Index) const;
+
+  void dump() const;
 };
 
 } // end llvm namespace