For PR411:

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

diff --git a/include/llvm/BasicBlock.h b/include/llvm/BasicBlock.h
index 7fcf8847bd52597c35a4861488d3096a94335ba4..0ca8eae1a3ef01e1865083e111d85b594c55d162 100644 (file)
--- a/include/llvm/BasicBlock.h
+++ b/include/llvm/BasicBlock.h
@@ -85,13 +85,25 @@ public:
         BasicBlock *getPrev()       { return Prev; }
   const BasicBlock *getPrev() const { return Prev; }
 
+  /// use_back - Specialize the methods defined in Value, as we know that an
+  /// BasicBlock can only be used by Instructions (specifically PHI and terms).
+  Instruction       *use_back()       { return cast<Instruction>(*use_begin());}
+  const Instruction *use_back() const { return cast<Instruction>(*use_begin());}
+  
   /// getTerminator() - If this is a well formed basic block, then this returns
   /// a pointer to the terminator instruction.  If it is not, then you get a
   /// null pointer back.
   ///
   TerminatorInst *getTerminator();
   const TerminatorInst *const getTerminator() const;
-
+  
+  /// Returns a pointer to the first instructon in this block that is not a 
+  /// PHINode instruction. When adding instruction to the beginning of the
+  /// basic block, they should be added before the returned value, not before
+  /// the first instruction, which might be PHI.
+  /// Returns 0 is there's no non-PHI instruction.
+  Instruction* getFirstNonPHI();
+  
   /// removeFromParent - This method unlinks 'this' from the containing
   /// function, but does not delete it.
   ///
@@ -102,10 +114,14 @@ public:
   ///
   void eraseFromParent();
   
-  /// moveBefore - Unlink this instruction from its current function and
-  /// insert it into the function that MovePos lives in, right before
-  /// MovePos.
+  /// moveBefore - Unlink this basic block from its current function and
+  /// insert it into the function that MovePos lives in, right before MovePos.
   void moveBefore(BasicBlock *MovePos);
+  
+  /// moveAfter - Unlink this basic block from its current function and
+  /// insert it into the function that MovePos lives in, right after MovePos.
+  void moveAfter(BasicBlock *MovePos);
+  
 
   /// getSinglePredecessor - If this basic block has a single predecessor block,
   /// return the block, otherwise return a null pointer.
@@ -136,6 +152,7 @@ public:
         InstListType &getInstList()       { return InstList; }
 
   virtual void print(std::ostream &OS) const { print(OS, 0); }
+  void print(std::ostream *OS) const { if (OS) print(*OS); }
   void print(std::ostream &OS, AssemblyAnnotationWriter *AAW) const;
 
   /// Methods for support type inquiry through isa, cast, and dyn_cast: