Add a constified getLandingPad() method.

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

diff --git a/include/llvm/BasicBlock.h b/include/llvm/BasicBlock.h
index 3336b3610d3d760767cdc000439c0c8794c1ddea..d2aa1673d921ff68f341dc264e2f1ff4c92d5b29 100644 (file)
--- a/include/llvm/BasicBlock.h
+++ b/include/llvm/BasicBlock.h
@@ -22,6 +22,7 @@
 
 namespace llvm {
 
+class LandingPadInst;
 class TerminatorInst;
 class LLVMContext;
 class BlockAddress;
@@ -74,7 +75,6 @@ public:
 private:
   InstListType InstList;
   Function *Parent;
-  bool IsLandingPad;
 
   void setParent(Function *parent);
   friend class SymbolTableListTraits<BasicBlock, Function>;
@@ -110,12 +110,6 @@ public:
   const Function *getParent() const { return Parent; }
         Function *getParent()       { return Parent; }
 
-  /// use_back - Specialize the methods defined in Value, as we know that an
-  /// BasicBlock can only be used by Users (specifically PHI nodes, terminators,
-  /// and BlockAddress's).
-  User       *use_back()       { return cast<User>(*use_begin());}
-  const User *use_back() const { return cast<User>(*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.
@@ -139,10 +133,19 @@ public:
     return const_cast<BasicBlock*>(this)->getFirstNonPHIOrDbg();
   }
 
-  /// isLandingPad - True if this basic block is a landing pad for exception
-  /// handling.
-  bool isLandingPad() const { return IsLandingPad; }
-  void setIsLandingPad(bool Val = true) { IsLandingPad = Val; }
+  // Same as above, but also skip lifetime intrinsics.
+  Instruction* getFirstNonPHIOrDbgOrLifetime();
+  const Instruction* getFirstNonPHIOrDbgOrLifetime() const {
+    return const_cast<BasicBlock*>(this)->getFirstNonPHIOrDbgOrLifetime();
+  }
+
+  /// getFirstInsertionPt - Returns an iterator to the first instruction in this
+  /// block that is suitable for inserting a non-PHI instruction. In particular,
+  /// it skips all PHIs and LandingPad instructions.
+  iterator getFirstInsertionPt();
+  const_iterator getFirstInsertionPt() const {
+    return const_cast<BasicBlock*>(this)->getFirstInsertionPt();
+  }
 
   /// removeFromParent - This method unlinks 'this' from the containing
   /// function, but does not delete it.
@@ -254,6 +257,19 @@ public:
   /// other than direct branches, switches, etc. to it.
   bool hasAddressTaken() const { return getSubclassDataFromValue() != 0; }
 
+  /// replaceSuccessorsPhiUsesWith - Update all phi nodes in all our successors
+  /// to refer to basic block New instead of to us.
+  void replaceSuccessorsPhiUsesWith(BasicBlock *New);
+
+  /// isLandingPad - Return true if this basic block is a landing pad. I.e.,
+  /// it's the destination of the 'unwind' edge of an invoke instruction.
+  bool isLandingPad() const;
+
+  /// getLandingPadInst() - Return the landingpad instruction associated with
+  /// the landing pad.
+  LandingPadInst *getLandingPadInst();
+  const LandingPadInst *getLandingPadInst() const;
+
 private:
   /// AdjustBlockAddressRefCount - BasicBlock stores the number of BlockAddress
   /// objects using it.  This is almost always 0, sometimes one, possibly but