None
}
BinOp::Add | BinOp::Sub if !checked => None,
- BinOp::Mul if !checked => {
- let val_ty = if is_signed { fx.tcx.types.i128 } else { fx.tcx.types.u128 };
- if fx.tcx.sess.target.is_like_windows {
- let ret_place = CPlace::new_stack_slot(fx, lhs.layout());
- let (lhs_ptr, lhs_extra) = lhs.force_stack(fx);
- let (rhs_ptr, rhs_extra) = rhs.force_stack(fx);
- assert!(lhs_extra.is_none());
- assert!(rhs_extra.is_none());
- let args =
- [ret_place.to_ptr().get_addr(fx), lhs_ptr.get_addr(fx), rhs_ptr.get_addr(fx)];
- fx.lib_call(
- "__multi3",
+ BinOp::Mul if !checked || is_signed => {
+ if !checked {
+ let val_ty = if is_signed { fx.tcx.types.i128 } else { fx.tcx.types.u128 };
+ if fx.tcx.sess.target.is_like_windows {
+ let ret_place = CPlace::new_stack_slot(fx, lhs.layout());
+ let (lhs_ptr, lhs_extra) = lhs.force_stack(fx);
+ let (rhs_ptr, rhs_extra) = rhs.force_stack(fx);
+ assert!(lhs_extra.is_none());
+ assert!(rhs_extra.is_none());
+ let args = [
+ ret_place.to_ptr().get_addr(fx),
+ lhs_ptr.get_addr(fx),
+ rhs_ptr.get_addr(fx),
+ ];
+ fx.lib_call(
+ "__multi3",
+ vec![
+ AbiParam::special(fx.pointer_type, ArgumentPurpose::StructReturn),
+ AbiParam::new(fx.pointer_type),
+ AbiParam::new(fx.pointer_type),
+ ],
+ vec![],
+ &args,
+ );
+ Some(ret_place.to_cvalue(fx))
+ } else {
+ Some(fx.easy_call("__multi3", &[lhs, rhs], val_ty))
+ }
+ } else {
+ let out_ty = fx.tcx.mk_tup([lhs.layout().ty, fx.tcx.types.bool].iter());
+ let oflow = CPlace::new_stack_slot(fx, fx.layout_of(fx.tcx.types.i32));
+ let lhs = lhs.load_scalar(fx);
+ let rhs = rhs.load_scalar(fx);
+ let oflow_ptr = oflow.to_ptr().get_addr(fx);
+ let res = fx.lib_call(
+ "__muloti4",
vec![
- AbiParam::special(fx.pointer_type, ArgumentPurpose::StructReturn),
- AbiParam::new(fx.pointer_type),
+ AbiParam::new(types::I128),
+ AbiParam::new(types::I128),
AbiParam::new(fx.pointer_type),
],
- vec![],
- &args,
- );
- Some(ret_place.to_cvalue(fx))
- } else {
- Some(fx.easy_call("__multi3", &[lhs, rhs], val_ty))
+ vec![AbiParam::new(types::I128)],
+ &[lhs, rhs, oflow_ptr],
+ )[0];
+ let oflow = oflow.to_cvalue(fx).load_scalar(fx);
+ let oflow = fx.bcx.ins().ireduce(types::I8, oflow);
+ Some(CValue::by_val_pair(res, oflow, fx.layout_of(out_ty)))
}
}
BinOp::Add | BinOp::Sub | BinOp::Mul => {
(BinOp::Sub, false) => "__rust_u128_subo",
(BinOp::Sub, true) => "__rust_i128_subo",
(BinOp::Mul, false) => "__rust_u128_mulo",
- (BinOp::Mul, true) => "__rust_i128_mulo",
_ => unreachable!(),
};
fx.lib_call(name, param_types, vec![], &args);