diff options
Diffstat (limited to 'include/llvm/iOther.h')
| -rw-r--r-- | include/llvm/iOther.h | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/include/llvm/iOther.h b/include/llvm/iOther.h index b66e4d4..118241f 100644 --- a/include/llvm/iOther.h +++ b/include/llvm/iOther.h @@ -20,16 +20,10 @@ // node, that can not exist in nature, but can be synthesized in a computer // scientist's overactive imagination. // -// TODO: FIXME: This representation is not good enough. Consider the following -// code: -// BB0: %x = int %0 -// BB1: %y = int %1 -// BB2: %z = phi int %0, %1 - Can't tell where constants come from! -// -// TOFIX: Store pair<Use,BasicBlockUse> instead of just <Use> -// class PHINode : public Instruction { - vector<Use> IncomingValues; + typedef pair<Use,BasicBlockUse> PairTy; + vector<PairTy> IncomingValues; + PHINode(const PHINode &PN); public: PHINode(const Type *Ty, const string &Name = ""); @@ -40,22 +34,24 @@ public: // Implement all of the functionality required by User... // virtual void dropAllReferences(); - virtual const Value *getOperand(unsigned i) const { - return (i < IncomingValues.size()) ? IncomingValues[i] : 0; + virtual const Value *getOperand(unsigned i) const { + if (i >= IncomingValues.size()*2) return 0; + if (i & 1) return IncomingValues[i/2].second; + else return IncomingValues[i/2].first; } inline Value *getOperand(unsigned i) { return (Value*)((const PHINode*)this)->getOperand(i); } - virtual unsigned getNumOperands() const { return IncomingValues.size(); } + virtual unsigned getNumOperands() const { return IncomingValues.size()*2; } virtual bool setOperand(unsigned i, Value *Val); virtual string getOpcode() const { return "phi"; } // addIncoming - Add an incoming value to the end of the PHI list - void addIncoming(Value *D); + void addIncoming(Value *D, BasicBlock *BB); // removeIncomingValue - Remove an incoming value. This is useful if a // predecessor basic block is deleted. The value removed is returned. - Value *removeIncomingValue(unsigned idx); + Value *removeIncomingValue(const BasicBlock *BB); }; |