1 files changed, 12 insertions, 1 deletions

diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h
index bb50b5df4ca8..6b4c64055bf3 100644
--- a/include/llvm/CodeGen/MachineBasicBlock.h
+++ b/include/llvm/CodeGen/MachineBasicBlock.h
@@ -92,10 +92,15 @@ class MachineBasicBlock : public ilist_node<MachineBasicBlock> {
 
 public:
   /// getBasicBlock - Return the LLVM basic block that this instance
-  /// corresponded to originally.
+  /// corresponded to originally. Note that this may be NULL if this instance
+  /// does not correspond directly to an LLVM basic block.
   ///
   const BasicBlock *getBasicBlock() const { return BB; }
 
+  /// getName - Return the name of the corresponding LLVM basic block, or
+  /// "(null)".
+  StringRef getName() const;
+
   /// hasAddressTaken - Test whether this block is potentially the target
   /// of an indirect branch.
   bool hasAddressTaken() const { return AddressTaken; }
@@ -266,6 +271,12 @@ public:
   /// ends with an unconditional branch to some other block.
   bool isLayoutSuccessor(const MachineBasicBlock *MBB) const;
 
+  /// canFallThrough - Return true if the block can implicitly transfer
+  /// control to the block after it by falling off the end of it.  This should
+  /// return false if it can reach the block after it, but it uses an explicit
+  /// branch to do so (e.g., a table jump).  True is a conservative answer.
+  bool canFallThrough();
+
   /// getFirstTerminator - returns an iterator to the first terminator
   /// instruction of this basic block. If a terminator does not exist,
   /// it returns end()