+/// createVariablePiece - Create a descriptor to describe one part
+/// of aggregate variable that is fragmented across multiple Values.
+DIVariable DIBuilder::createVariablePiece(DIVariable Variable,
+ unsigned OffsetInBytes,
+ unsigned SizeInBytes) {
+ assert(SizeInBytes > 0 && "zero-size piece");
+ Value *Addr[] = {
+ ConstantInt::get(Type::getInt32Ty(VMContext), OpPiece),
+ ConstantInt::get(Type::getInt32Ty(VMContext), OffsetInBytes),
+ ConstantInt::get(Type::getInt32Ty(VMContext), SizeInBytes)
+ };
+
+ assert((Variable->getNumOperands() == 8 || Variable.isVariablePiece()) &&
+ "variable already has a complex address");
+ SmallVector<Value *, 9> Elts;
+ for (unsigned i = 0; i < 8; ++i)
+ Elts.push_back(Variable->getOperand(i));
+
+ Elts.push_back(MDNode::get(VMContext, Addr));
+ return DIVariable(MDNode::get(VMContext, Elts));
+}
+