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Avoid the stack in a couple more cases in write_cvalue_maybe_transmute

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This commit is contained in:
bjorn3 2023-06-19 20:56:21 +00:00
parent ab836ca5e3
commit daf79b5685
1 changed files with 7 additions and 6 deletions
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13
src/value_and_place.rs
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@ -599,12 +599,13 @@ fn transmute_scalar<'tcx>(
transmute_scalar(fx, var, data, dst_ty);
}
CPlaceInner::VarPair(_local, var1, var2) => {
let (data1, data2) = if from.layout().ty == dst_layout.ty {
CValue(from.0, dst_layout).load_scalar_pair(fx)
} else {
let (ptr, meta) = from.force_stack(fx);
assert!(meta.is_none());
CValue(CValueInner::ByRef(ptr, None), dst_layout).load_scalar_pair(fx)
let (data1, data2) = match from.1.abi {
Abi::ScalarPair(_, _) => CValue(from.0, dst_layout).load_scalar_pair(fx),
_ => {
let (ptr, meta) = from.force_stack(fx);
assert!(meta.is_none());
CValue(CValueInner::ByRef(ptr, None), dst_layout).load_scalar_pair(fx)
}
};
let (dst_ty1, dst_ty2) = fx.clif_pair_type(self.layout().ty).unwrap();
transmute_scalar(fx, var1, data1, dst_ty1);