//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
#include "llvm/Instruction.h"
#include "llvm/SymbolTableListTraits.h"
#include "llvm/ADT/ilist"
+#include "llvm/Support/DataTypes.h"
namespace llvm {
template <class Ptr, class USE_iterator> class PredIterator;
template<> struct ilist_traits<Instruction>
- : public SymbolTableListTraits<Instruction, BasicBlock, Function> {
+ : public SymbolTableListTraits<Instruction, BasicBlock> {
// createSentinel is used to create a node that marks the end of the list...
static Instruction *createSentinel();
static void destroySentinel(Instruction *I) { delete I; }
static iplist<Instruction> &getList(BasicBlock *BB);
+ static ValueSymbolTable *getSymTab(BasicBlock *ItemParent);
+ static int getListOffset();
};
/// This represents a single basic block in LLVM. A basic block is simply a
/// modifying a program. However, the verifier will ensure that basic blocks
/// are "well formed".
/// @brief LLVM Basic Block Representation
-class BasicBlock : public Value { // Basic blocks are data objects also
+class BasicBlock : public User { // Basic blocks are data objects also
public:
typedef iplist<Instruction> InstListType;
private :
InstListType InstList;
BasicBlock *Prev, *Next; // Next and Prev links for our intrusive linked list
+ Function *Parent;
+ Use unwindDest;
void setParent(Function *parent);
void setNext(BasicBlock *N) { Next = N; }
void setPrev(BasicBlock *N) { Prev = N; }
- friend class SymbolTableListTraits<BasicBlock, Function, Function>;
+ friend class SymbolTableListTraits<BasicBlock, Function>;
BasicBlock(const BasicBlock &); // Do not implement
void operator=(const BasicBlock &); // Do not implement
/// is automatically inserted at either the end of the function (if
/// InsertBefore is null), or before the specified basic block.
///
- BasicBlock(const std::string &Name = "", Function *Parent = 0,
- BasicBlock *InsertBefore = 0);
+ explicit BasicBlock(const std::string &Name = "", Function *Parent = 0,
+ BasicBlock *InsertBefore = 0, BasicBlock *unwindDest = 0);
~BasicBlock();
+ /// getUnwindDest - Returns the BasicBlock that flow will enter if an unwind
+ /// instruction occurs in this block. May be null, in which case unwinding
+ /// is undefined in this block.
+ const BasicBlock *getUnwindDest() const;
+ BasicBlock *getUnwindDest();
+
+ /// setUnwindDest - Set which BasicBlock flow will enter if an unwind is
+ /// executed within this block. It may be set to null if unwinding is not
+ /// permitted in this block.
+ void setUnwindDest(BasicBlock *unwindDest);
+
/// getParent - Return the enclosing method, or null if none
///
- const Function *getParent() const { return InstList.getParent(); }
- Function *getParent() { return InstList.getParent(); }
-
- // getNext/Prev - Return the next or previous basic block in the list.
- BasicBlock *getNext() { return Next; }
- const BasicBlock *getNext() const { return Next; }
- BasicBlock *getPrev() { return Prev; }
- const BasicBlock *getPrev() const { return Prev; }
+ 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 Instructions (specifically PHI and terms).
/// null pointer back.
///
TerminatorInst *getTerminator();
- const TerminatorInst *const getTerminator() const;
+ const TerminatorInst *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
/// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const BasicBlock *) { return true; }
static inline bool classof(const Value *V) {
- return V->getValueType() == Value::BasicBlockVal;
+ return V->getValueID() == Value::BasicBlockVal;
}
/// dropAllReferences() - This function causes all the subinstructions to "let
/// the basic block).
///
BasicBlock *splitBasicBlock(iterator I, const std::string &BBName = "");
+
+
+ static unsigned getInstListOffset() {
+ BasicBlock *Obj = 0;
+ return unsigned(reinterpret_cast<uintptr_t>(&Obj->InstList));
+ }
+
+private:
+ // getNext/Prev - Return the next or previous basic block in the list. Access
+ // these with Function::iterator.
+ BasicBlock *getNext() { return Next; }
+ const BasicBlock *getNext() const { return Next; }
+ BasicBlock *getPrev() { return Prev; }
+ const BasicBlock *getPrev() const { return Prev; }
};
+inline int
+ilist_traits<Instruction>::getListOffset() {
+ return BasicBlock::getInstListOffset();
+}
+
} // End llvm namespace
#endif