X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FBasicBlock.h;h=108f43a7675eef58ad684060526a851ce9c1a2fa;hb=2d0d59380a0f22d32782fb9837b57ffc25c8d9f1;hp=f15d2b46a91453ca2a2bfa3802afb623389a2586;hpb=cb4f10b4d5e9ba2e37e70424b290dd1187ca6ea7;p=oota-llvm.git diff --git a/include/llvm/BasicBlock.h b/include/llvm/BasicBlock.h index f15d2b46a91..108f43a7675 100644 --- a/include/llvm/BasicBlock.h +++ b/include/llvm/BasicBlock.h @@ -2,13 +2,13 @@ // // 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. // //===----------------------------------------------------------------------===// // -// // This file contains the declaration of the BasicBlock class. +// //===----------------------------------------------------------------------===// #ifndef LLVM_BASICBLOCK_H @@ -16,7 +16,8 @@ #include "llvm/Instruction.h" #include "llvm/SymbolTableListTraits.h" -#include "llvm/ADT/ilist" +#include "llvm/ADT/ilist.h" +#include "llvm/Support/DataTypes.h" namespace llvm { @@ -25,11 +26,13 @@ template class SuccIterator; // Successor Iterator template class PredIterator; template<> struct ilist_traits - : public SymbolTableListTraits { + : public SymbolTableListTraits { // 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 &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 @@ -52,38 +55,38 @@ public: private : InstListType InstList; BasicBlock *Prev, *Next; // Next and Prev links for our intrusive linked list + Function *Parent; void setParent(Function *parent); void setNext(BasicBlock *N) { Next = N; } void setPrev(BasicBlock *N) { Prev = N; } - friend class SymbolTableListTraits; + friend class SymbolTableListTraits; BasicBlock(const BasicBlock &); // Do not implement void operator=(const BasicBlock &); // Do not implement + /// BasicBlock ctor - If the function parameter is specified, the basic block + /// is automatically inserted at either the end of the function (if + /// InsertBefore is null), or before the specified basic block. + /// + explicit BasicBlock(const std::string &Name = "", Function *Parent = 0, + BasicBlock *InsertBefore = 0); public: /// Instruction iterators... typedef InstListType::iterator iterator; typedef InstListType::const_iterator const_iterator; - /// BasicBlock ctor - If the function parameter is specified, the basic block - /// 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); + // allocate space for exactly zero operands + static BasicBlock *Create(const std::string &Name = "", Function *Parent = 0, + BasicBlock *InsertBefore = 0) { + return new BasicBlock(Name, Parent, InsertBefore); + } ~BasicBlock(); /// 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). @@ -95,7 +98,7 @@ public: /// 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 @@ -103,6 +106,9 @@ public: /// the first instruction, which might be PHI. /// Returns 0 is there's no non-PHI instruction. Instruction* getFirstNonPHI(); + const Instruction* getFirstNonPHI() const { + return const_cast(this)->getFirstNonPHI(); + } /// removeFromParent - This method unlinks 'this' from the containing /// function, but does not delete it. @@ -152,12 +158,13 @@ public: InstListType &getInstList() { return InstList; } virtual void print(std::ostream &OS) const { print(OS, 0); } + void print(std::ostream *OS) const { if (OS) print(*OS); } void print(std::ostream &OS, AssemblyAnnotationWriter *AAW) const; /// 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 @@ -191,8 +198,27 @@ public: /// the basic block). /// BasicBlock *splitBasicBlock(iterator I, const std::string &BBName = ""); + + + static unsigned getInstListOffset() { + BasicBlock *Obj = 0; + return unsigned(reinterpret_cast(&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::getListOffset() { + return BasicBlock::getInstListOffset(); +} + } // End llvm namespace #endif