+/// getMaskValue - Return the index from the shuffle mask for the specified
+/// output result. This is either -1 if the element is undef or a number less
+/// than 2*numelements.
+int ShuffleVectorInst::getMaskValue(unsigned i) const {
+ const Constant *Mask = cast<Constant>(getOperand(2));
+ if (isa<UndefValue>(Mask)) return -1;
+ if (isa<ConstantAggregateZero>(Mask)) return 0;
+ const ConstantVector *MaskCV = cast<ConstantVector>(Mask);
+ assert(i < MaskCV->getNumOperands() && "Index out of range");
+
+ if (isa<UndefValue>(MaskCV->getOperand(i)))
+ return -1;
+ return cast<ConstantInt>(MaskCV->getOperand(i))->getZExtValue();
+}
+
+//===----------------------------------------------------------------------===//
+// InsertValueInst Class
+//===----------------------------------------------------------------------===//
+
+void InsertValueInst::init(Value *Agg, Value *Val, const unsigned *Idx,
+ unsigned NumIdx, const std::string &Name) {
+ assert(NumOperands == 2 && "NumOperands not initialized?");
+ Op<0>() = Agg;
+ Op<1>() = Val;
+
+ Indices.insert(Indices.end(), Idx, Idx + NumIdx);
+ setName(Name);
+}
+
+void InsertValueInst::init(Value *Agg, Value *Val, unsigned Idx,
+ const std::string &Name) {
+ assert(NumOperands == 2 && "NumOperands not initialized?");
+ Op<0>() = Agg;
+ Op<1>() = Val;
+
+ Indices.push_back(Idx);
+ setName(Name);
+}
+
+InsertValueInst::InsertValueInst(const InsertValueInst &IVI)
+ : Instruction(IVI.getType(), InsertValue,
+ OperandTraits<InsertValueInst>::op_begin(this), 2),
+ Indices(IVI.Indices) {
+ Op<0>() = IVI.getOperand(0);
+ Op<1>() = IVI.getOperand(1);
+}
+
+InsertValueInst::InsertValueInst(Value *Agg,
+ Value *Val,
+ unsigned Idx,
+ const std::string &Name,
+ Instruction *InsertBefore)
+ : Instruction(Agg->getType(), InsertValue,
+ OperandTraits<InsertValueInst>::op_begin(this),
+ 2, InsertBefore) {
+ init(Agg, Val, Idx, Name);
+}
+
+InsertValueInst::InsertValueInst(Value *Agg,
+ Value *Val,
+ unsigned Idx,
+ const std::string &Name,
+ BasicBlock *InsertAtEnd)
+ : Instruction(Agg->getType(), InsertValue,
+ OperandTraits<InsertValueInst>::op_begin(this),
+ 2, InsertAtEnd) {
+ init(Agg, Val, Idx, Name);
+}
+
+//===----------------------------------------------------------------------===//
+// ExtractValueInst Class
+//===----------------------------------------------------------------------===//
+
+void ExtractValueInst::init(const unsigned *Idx, unsigned NumIdx,
+ const std::string &Name) {
+ assert(NumOperands == 1 && "NumOperands not initialized?");
+
+ Indices.insert(Indices.end(), Idx, Idx + NumIdx);
+ setName(Name);
+}
+
+void ExtractValueInst::init(unsigned Idx, const std::string &Name) {
+ assert(NumOperands == 1 && "NumOperands not initialized?");
+
+ Indices.push_back(Idx);
+ setName(Name);
+}
+
+ExtractValueInst::ExtractValueInst(const ExtractValueInst &EVI)
+ : UnaryInstruction(EVI.getType(), ExtractValue, EVI.getOperand(0)),
+ Indices(EVI.Indices) {
+}
+
+// getIndexedType - Returns the type of the element that would be extracted
+// with an extractvalue instruction with the specified parameters.
+//
+// A null type is returned if the indices are invalid for the specified
+// pointer type.
+//
+const Type* ExtractValueInst::getIndexedType(const Type *Agg,
+ const unsigned *Idxs,
+ unsigned NumIdx) {
+ unsigned CurIdx = 0;
+ for (; CurIdx != NumIdx; ++CurIdx) {
+ const CompositeType *CT = dyn_cast<CompositeType>(Agg);
+ if (!CT || isa<PointerType>(CT) || isa<VectorType>(CT)) return 0;
+ unsigned Index = Idxs[CurIdx];
+ if (!CT->indexValid(Index)) return 0;
+ Agg = CT->getTypeAtIndex(Index);
+
+ // If the new type forwards to another type, then it is in the middle
+ // of being refined to another type (and hence, may have dropped all
+ // references to what it was using before). So, use the new forwarded
+ // type.
+ if (const Type *Ty = Agg->getForwardedType())
+ Agg = Ty;
+ }
+ return CurIdx == NumIdx ? Agg : 0;
+}
+
+const Type* ExtractValueInst::getIndexedType(const Type *Agg,
+ unsigned Idx) {
+ return getIndexedType(Agg, &Idx, 1);
+}
+
+ExtractValueInst::ExtractValueInst(Value *Agg,
+ unsigned Idx,
+ const std::string &Name,
+ BasicBlock *InsertAtEnd)
+ : UnaryInstruction(checkType(getIndexedType(Agg->getType(), &Idx, 1)),
+ ExtractValue, Agg, InsertAtEnd) {
+ init(Idx, Name);
+}
+
+ExtractValueInst::ExtractValueInst(Value *Agg,
+ unsigned Idx,
+ const std::string &Name,
+ Instruction *InsertBefore)
+ : UnaryInstruction(checkType(getIndexedType(Agg->getType(), &Idx, 1)),
+ ExtractValue, Agg, InsertBefore) {
+ init(Idx, Name);
+}