Special case aliases in GlobalValue::getAlignment.

[oota-llvm.git] / include / llvm / IR / BasicBlock.h

diff --git a/include/llvm/IR/BasicBlock.h b/include/llvm/IR/BasicBlock.h
index 0c4fe67dd99c263ea7bc7bee6ec856520e952ed5..a19489aa49b1df410570af8511dc1988ad48d47e 100644 (file)
--- a/include/llvm/IR/BasicBlock.h
+++ b/include/llvm/IR/BasicBlock.h
@@ -18,6 +18,7 @@
 #include "llvm/ADT/ilist.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/IR/SymbolTableListTraits.h"
+#include "llvm/Support/CBindingWrapping.h"
 #include "llvm/Support/DataTypes.h"
 
 namespace llvm {
@@ -35,14 +36,13 @@ template<> struct ilist_traits<Instruction>
   /// The sentinel is relative to this instance, so we use a non-static
   /// method.
   Instruction *createSentinel() const {
-    // since i(p)lists always publicly derive from the corresponding
-    // traits, placing a data member in this class will augment i(p)list.
-    // But since the NodeTy is expected to publicly derive from
-    // ilist_node<NodeTy>, there is a legal viable downcast from it
-    // to NodeTy. We use this trick to superpose i(p)list with a "ghostly"
-    // NodeTy, which becomes the sentinel. Dereferencing the sentinel is
-    // forbidden (save the ilist_node<NodeTy>) so no one will ever notice
-    // the superposition.
+    // Since i(p)lists always publicly derive from their corresponding traits,
+    // placing a data member in this class will augment the i(p)list.  But since
+    // the NodeTy is expected to be publicly derive from ilist_node<NodeTy>,
+    // there is a legal viable downcast from it to NodeTy. We use this trick to
+    // superimpose an i(p)list with a "ghostly" NodeTy, which becomes the
+    // sentinel. Dereferencing the sentinel is forbidden (save the
+    // ilist_node<NodeTy>), so no one will ever notice the superposition.
     return static_cast<Instruction*>(&Sentinel);
   }
   static void destroySentinel(Instruction*) {}
@@ -90,7 +90,8 @@ private:
   /// inserted at either the end of the function (if InsertBefore is null), or
   /// before the specified basic block.
   explicit BasicBlock(LLVMContext &C, const Twine &Name = "",
-                      Function *Parent = 0, BasicBlock *InsertBefore = 0);
+                      Function *Parent = nullptr,
+                      BasicBlock *InsertBefore = nullptr);
 public:
   /// \brief Get the context in which this basic block lives.
   LLVMContext &getContext() const;
@@ -107,7 +108,8 @@ public:
   /// inserted at either the end of the function (if InsertBefore is 0), or
   /// before the specified basic block.
   static BasicBlock *Create(LLVMContext &Context, const Twine &Name = "",
-                            Function *Parent = 0,BasicBlock *InsertBefore = 0) {
+                            Function *Parent = nullptr,
+                            BasicBlock *InsertBefore = nullptr) {
     return new BasicBlock(Context, Name, Parent, InsertBefore);
   }
   ~BasicBlock();
@@ -116,6 +118,8 @@ public:
   const Function *getParent() const { return Parent; }
         Function *getParent()       { return Parent; }
 
+  const DataLayout *getDataLayout() const;
+
   /// \brief Returns the terminator instruction if the block is well formed or
   /// null if the block is not well formed.
   TerminatorInst *getTerminator();
@@ -170,14 +174,15 @@ public:
   void moveAfter(BasicBlock *MovePos);
 
 
-  /// \brief Return this block if it has a single predecessor block. Otherwise
-  /// return a null pointer.
+  /// \brief Return the predecessor of this block if it has a single predecessor
+  /// block. Otherwise return a null pointer.
   BasicBlock *getSinglePredecessor();
   const BasicBlock *getSinglePredecessor() const {
     return const_cast<BasicBlock*>(this)->getSinglePredecessor();
   }
 
-  /// \brief Return this block if it has a unique predecessor block. Otherwise return a null pointer.
+  /// \brief Return the predecessor of this block if it has a unique predecessor
+  /// block. Otherwise return a null pointer.
   ///
   /// Note that unique predecessor doesn't mean single edge, there can be
   /// multiple edges from the unique predecessor to this block (for example a
@@ -292,13 +297,16 @@ private:
     assert((int)(signed char)getSubclassDataFromValue() >= 0 &&
            "Refcount wrap-around");
   }
-  // \brief Shadow Value::setValueSubclassData with a private forwarding method
-  // so that any future subclasses cannot accidentally use it.
+  /// \brief Shadow Value::setValueSubclassData with a private forwarding method
+  /// so that any future subclasses cannot accidentally use it.
   void setValueSubclassData(unsigned short D) {
     Value::setValueSubclassData(D);
   }
 };
 
+// Create wrappers for C Binding types (see CBindingWrapping.h).
+DEFINE_SIMPLE_CONVERSION_FUNCTIONS(BasicBlock, LLVMBasicBlockRef)
+
 } // End llvm namespace
 
 #endif