)?;
let mut arg_locals = self.frame().mir.args_iter();
+ trace!("ABI: {:?}", sig.abi);
+ trace!("arg_locals: {:?}", self.frame().mir.args_iter().collect::<Vec<_>>());
+ trace!("arg_operands: {:?}", arg_operands);
match sig.abi {
Abi::Rust => {
for (arg_local, (arg_val, arg_ty)) in arg_locals.zip(args) {
let (arg_val, arg_ty) = args.remove(0);
let layout = self.type_layout(arg_ty)?;
if let (&ty::TyTuple(fields, _), &Layout::Univariant { ref variant, .. }) = (&arg_ty.sty, layout) {
+ trace!("fields: {:?}", fields);
if self.frame().mir.args_iter().count() == fields.len() + 1 {
let offsets = variant.offsets.iter().map(|s| s.bytes());
- if let Value::ByRef(ptr) = arg_val {
- for ((offset, ty), arg_local) in offsets.zip(fields).zip(arg_locals) {
- let arg = Value::ByRef(ptr.offset(offset));
- let dest = self.eval_lvalue(&mir::Lvalue::Local(arg_local))?;
- self.write_value(arg, dest, ty)?;
+ match arg_val {
+ Value::ByRef(ptr) => {
+ for ((offset, ty), arg_local) in offsets.zip(fields).zip(arg_locals) {
+ let arg = Value::ByRef(ptr.offset(offset));
+ let dest = self.eval_lvalue(&mir::Lvalue::Local(arg_local))?;
+ trace!("writing arg {:?} to {:?} (type: {})", arg, dest, ty);
+ self.write_value(arg, dest, ty)?;
+ }
+ },
+ Value::ByVal(PrimVal::Undef) => {},
+ other => {
+ assert_eq!(fields.len(), 1);
+ let dest = self.eval_lvalue(&mir::Lvalue::Local(arg_locals.next().unwrap()))?;
+ self.write_value(other, dest, fields[0])?;
}
}
} else {
+ trace!("manual impl of rust-call ABI");
// called a manual impl of a rust-call function
let dest = self.eval_lvalue(&mir::Lvalue::Local(arg_locals.next().unwrap()))?;
self.write_value(arg_val, dest, arg_ty)?;