+/// getArgNo - Return the index of this formal argument in its containing
+/// function. For example in "void foo(int a, float b)" a is 0 and b is 1.
+unsigned Argument::getArgNo() const {
+ const Function *F = getParent();
+ assert(F && "Argument is not in a function");
+
+ Function::const_arg_iterator AI = F->arg_begin();
+ unsigned ArgIdx = 0;
+ for (; &*AI != this; ++AI)
+ ++ArgIdx;
+
+ return ArgIdx;
+}
+
+/// hasByValAttr - Return true if this argument has the byval attribute on it
+/// in its containing function.
+bool Argument::hasByValAttr() const {
+ if (!isa<PointerType>(getType())) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::ByVal);
+}
+
+/// hasNoAliasAttr - Return true if this argument has the noalias attribute on
+/// it in its containing function.
+bool Argument::hasNoAliasAttr() const {
+ if (!isa<PointerType>(getType())) return false;
+ return getParent()->paramHasAttr(getArgNo()+1, ParamAttr::NoAlias);
+}
+
+/// hasSRetAttr - Return true if this argument has the sret attribute on
+/// it in its containing function.
+bool Argument::hasStructRetAttr() const {
+ if (!isa<PointerType>(getType())) return false;
+ if (this != getParent()->arg_begin())
+ return false; // StructRet param must be first param
+ return getParent()->paramHasAttr(1, ParamAttr::StructRet);
+}
+
+/// addAttr - Add a ParamAttr to an argument
+void Argument::addAttr(ParameterAttributes attr) {
+ getParent()->setParamAttrs(
+ getParent()->getParamAttrs().addAttr(getArgNo() + 1, attr));
+}
+
+/// removeAttr - Remove a ParamAttr from an argument
+void Argument::removeAttr(ParameterAttributes attr) {
+ getParent()->setParamAttrs(
+ getParent()->getParamAttrs().removeAttr(getArgNo() + 1, attr));
+}
+
+
+