make MachineFunction keep track of its ID and make

[oota-llvm.git] / include / llvm / CodeGen / MachineBasicBlock.h

diff --git a/include/llvm/CodeGen/MachineBasicBlock.h b/include/llvm/CodeGen/MachineBasicBlock.h
index 78662784eb517c3a9019de9a72a9183d939874ee..20644c17e1adb5d30d52ad180712a0297f92ee92 100644 (file)
--- a/include/llvm/CodeGen/MachineBasicBlock.h
+++ b/include/llvm/CodeGen/MachineBasicBlock.h
@@ -271,6 +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()
@@ -331,6 +337,10 @@ public:
                             MachineBasicBlock *DestB,
                             bool isCond);
 
+  /// findDebugLoc - find the next valid DebugLoc starting at MBBI, skipping
+  /// any DEBUG_VALUE instructions.  Return UnknownLoc if there is none.
+  DebugLoc findDebugLoc(MachineBasicBlock::iterator &MBBI);
+
   // Debugging methods.
   void dump() const;
   void print(raw_ostream &OS) const;