use crate::prelude::*;
pub(crate) fn maybe_codegen<'tcx>(
- fx: &mut FunctionCx<'_, 'tcx, impl Module>,
+ fx: &mut FunctionCx<'_, '_, 'tcx>,
bin_op: BinOp,
checked: bool,
lhs: CValue<'tcx>,
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
+ 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 {
- fx.tcx.types.u128
- };
- Some(fx.easy_call("__multi3", &[lhs, rhs], val_ty))
+ 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::new(types::I128),
+ AbiParam::new(types::I128),
+ AbiParam::new(fx.pointer_type),
+ ],
+ 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!(checked);
let out_ty = fx.tcx.mk_tup([lhs.layout().ty, fx.tcx.types.bool].iter());
let out_place = CPlace::new_stack_slot(fx, fx.layout_of(out_ty));
- let param_types = vec![
- AbiParam::special(pointer_ty(fx.tcx), ArgumentPurpose::StructReturn),
- AbiParam::new(types::I128),
- AbiParam::new(types::I128),
- ];
- let args = [
- out_place.to_ptr().get_addr(fx),
- lhs.load_scalar(fx),
- rhs.load_scalar(fx),
- ];
+ let (param_types, args) = if fx.tcx.sess.target.is_like_windows {
+ 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());
+ (
+ vec![
+ 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(fx.pointer_type, ArgumentPurpose::StructReturn),
+ AbiParam::new(types::I128),
+ AbiParam::new(types::I128),
+ ],
+ [out_place.to_ptr().get_addr(fx), lhs.load_scalar(fx), rhs.load_scalar(fx)],
+ )
+ };
let name = match (bin_op, is_signed) {
(BinOp::Add, false) => "__rust_u128_addo",
(BinOp::Add, true) => "__rust_i128_addo",
(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);
Some(out_place.to_cvalue(fx))
}
BinOp::Offset => unreachable!("offset should only be used on pointers, not 128bit ints"),
- BinOp::Div => {
+ BinOp::Div | BinOp::Rem => {
assert!(!checked);
- if is_signed {
- Some(fx.easy_call("__divti3", &[lhs, rhs], fx.tcx.types.i128))
- } else {
- Some(fx.easy_call("__udivti3", &[lhs, rhs], fx.tcx.types.u128))
- }
- }
- BinOp::Rem => {
- assert!(!checked);
- if is_signed {
- Some(fx.easy_call("__modti3", &[lhs, rhs], fx.tcx.types.i128))
+ let name = match (bin_op, is_signed) {
+ (BinOp::Div, false) => "__udivti3",
+ (BinOp::Div, true) => "__divti3",
+ (BinOp::Rem, false) => "__umodti3",
+ (BinOp::Rem, true) => "__modti3",
+ _ => unreachable!(),
+ };
+ if fx.tcx.sess.target.is_like_windows {
+ 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 = [lhs_ptr.get_addr(fx), rhs_ptr.get_addr(fx)];
+ let ret = fx.lib_call(
+ name,
+ vec![AbiParam::new(fx.pointer_type), AbiParam::new(fx.pointer_type)],
+ vec![AbiParam::new(types::I64X2)],
+ &args,
+ )[0];
+ // FIXME use bitcast instead of store to get from i64x2 to i128
+ let ret_place = CPlace::new_stack_slot(fx, lhs.layout());
+ ret_place.to_ptr().store(fx, ret, MemFlags::trusted());
+ Some(ret_place.to_cvalue(fx))
} else {
- Some(fx.easy_call("__umodti3", &[lhs, rhs], fx.tcx.types.u128))
+ Some(fx.easy_call(name, &[lhs, rhs], lhs.layout().ty))
}
}
BinOp::Lt | BinOp::Le | BinOp::Eq | BinOp::Ge | BinOp::Gt | BinOp::Ne => {
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,
}
}
projects / rust.git / blobdiff