return None;
}
- let lhs_val = lhs.load_scalar(fx);
- let rhs_val = rhs.load_scalar(fx);
-
let is_signed = type_sign(lhs.layout().ty);
match bin_op {
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(pointer_ty(fx.tcx), ArgumentPurpose::StructReturn),
- AbiParam::new(pointer_ty(fx.tcx)),
- AbiParam::new(pointer_ty(fx.tcx)),
+ 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 => {
assert!(rhs_extra.is_none());
(
vec![
- AbiParam::special(pointer_ty(fx.tcx), ArgumentPurpose::StructReturn),
- AbiParam::new(pointer_ty(fx.tcx)),
- AbiParam::new(pointer_ty(fx.tcx)),
+ AbiParam::special(fx.pointer_type, ArgumentPurpose::StructReturn),
+ AbiParam::new(fx.pointer_type),
+ AbiParam::new(fx.pointer_type),
],
[out_place.to_ptr().get_addr(fx), lhs_ptr.get_addr(fx), rhs_ptr.get_addr(fx)],
)
} else {
(
vec![
- AbiParam::special(pointer_ty(fx.tcx), ArgumentPurpose::StructReturn),
+ AbiParam::special(fx.pointer_type, ArgumentPurpose::StructReturn),
AbiParam::new(types::I128),
AbiParam::new(types::I128),
],
(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);
let args = [lhs_ptr.get_addr(fx), rhs_ptr.get_addr(fx)];
let ret = fx.lib_call(
name,
- vec![AbiParam::new(pointer_ty(fx.tcx)), AbiParam::new(pointer_ty(fx.tcx))],
+ vec![AbiParam::new(fx.pointer_type), AbiParam::new(fx.pointer_type)],
vec![AbiParam::new(types::I64X2)],
&args,
)[0];
assert!(!checked);
None
}
- BinOp::Shl | BinOp::Shr => {
- let is_overflow = if checked {
- // rhs >= 128
-
- // FIXME support non 128bit rhs
- /*let (rhs_lsb, rhs_msb) = fx.bcx.ins().isplit(rhs_val);
- let rhs_msb_gt_0 = fx.bcx.ins().icmp_imm(IntCC::NotEqual, rhs_msb, 0);
- let rhs_lsb_ge_128 = fx.bcx.ins().icmp_imm(IntCC::SignedGreaterThan, rhs_lsb, 127);
- let is_overflow = fx.bcx.ins().bor(rhs_msb_gt_0, rhs_lsb_ge_128);*/
- let is_overflow = fx.bcx.ins().bconst(types::B1, false);
-
- Some(fx.bcx.ins().bint(types::I8, is_overflow))
- } else {
- None
- };
-
- let truncated_rhs = clif_intcast(fx, rhs_val, types::I32, false);
- let val = match bin_op {
- BinOp::Shl => fx.bcx.ins().ishl(lhs_val, truncated_rhs),
- BinOp::Shr => {
- if is_signed {
- fx.bcx.ins().sshr(lhs_val, truncated_rhs)
- } else {
- fx.bcx.ins().ushr(lhs_val, truncated_rhs)
- }
- }
- _ => unreachable!(),
- };
- if let Some(is_overflow) = is_overflow {
- let out_ty = fx.tcx.mk_tup([lhs.layout().ty, fx.tcx.types.bool].iter());
- Some(CValue::by_val_pair(val, is_overflow, fx.layout_of(out_ty)))
- } else {
- Some(CValue::by_val(val, lhs.layout()))
- }
- }
+ BinOp::Shl | BinOp::Shr => None,
}
}