namespace llvm {
class TerminatorInst;
-struct LLVMContext;
+class LLVMContext;
template<> struct ilist_traits<Instruction>
: public SymbolTableListTraits<Instruction, BasicBlock> {
Instruction *ensureHead(Instruction*) const { return createSentinel(); }
static void noteHead(Instruction*, Instruction*) {}
private:
- mutable ilist_node<Instruction> Sentinel;
+ mutable ilist_half_node<Instruction> Sentinel;
};
/// This represents a single basic block in LLVM. A basic block is simply a
/// is automatically inserted at either the end of the function (if
/// InsertBefore is null), or before the specified basic block.
///
- explicit BasicBlock(const Twine &Name = "", Function *Parent = 0,
- BasicBlock *InsertBefore = 0);
+ explicit BasicBlock(LLVMContext &C, const Twine &Name = "",
+ Function *Parent = 0, BasicBlock *InsertBefore = 0);
public:
- /// getContext - Get the context in which this basic block lives,
- /// or null if it is not currently attached to a function.
+ /// getContext - Get the context in which this basic block lives.
LLVMContext &getContext() const;
/// Instruction iterators...
/// Create - Creates a new BasicBlock. If the Parent parameter is specified,
/// the basic block is automatically inserted at either the end of the
/// function (if InsertBefore is 0), or before the specified basic block.
- static BasicBlock *Create(const Twine &Name = "", Function *Parent = 0,
- BasicBlock *InsertBefore = 0) {
- return new BasicBlock(Name, Parent, InsertBefore);
+ static BasicBlock *Create(LLVMContext &Context, const Twine &Name = "",
+ Function *Parent = 0,BasicBlock *InsertBefore = 0) {
+ return new BasicBlock(Context, Name, Parent, InsertBefore);
}
~BasicBlock();
/// cause a degenerate basic block to be formed, having a terminator inside of
/// the basic block).
///
+ /// Also note that this doesn't preserve any passes. To split blocks while
+ /// keeping loop information consistent, use the SplitBlock utility function.
+ ///
BasicBlock *splitBasicBlock(iterator I, const Twine &BBName = "");
};