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Also handle AggregateKind::RawPtr in cg_cranelift

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This commit is contained in:
Scott McMurray 2024-04-11 21:45:05 -07:00
parent 9520cebfc5
commit 5e1d16ca55
2 changed files with 30 additions and 0 deletions
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13
compiler/rustc_codegen_cranelift/src/base.rs
View File

@ -813,6 +813,19 @@ fn codegen_stmt<'tcx>(
);
lval.write_cvalue(fx, val);
}
Rvalue::Aggregate(ref kind, ref operands)
if matches!(**kind, AggregateKind::RawPtr(..)) =>
{
let ty = to_place_and_rval.1.ty(&fx.mir.local_decls, fx.tcx);
let layout = fx.layout_of(fx.monomorphize(ty));
let [data, meta] = &*operands.raw else {
bug!("RawPtr fields: {operands:?}");
};
let data = codegen_operand(fx, data);
let meta = codegen_operand(fx, meta);
let ptr_val = CValue::pointer_from_data_and_meta(data, meta, layout);
lval.write_cvalue(fx, ptr_val);
}
Rvalue::Aggregate(ref kind, ref operands) => {
let (variant_index, variant_dest, active_field_index) = match **kind {
mir::AggregateKind::Adt(_, variant_index, _, _, active_field_index) => {

17
compiler/rustc_codegen_cranelift/src/value_and_place.rs
View File

@ -94,6 +94,23 @@ impl<'tcx> CValue<'tcx> {
CValue(CValueInner::ByValPair(value, extra), layout)
}
/// For `AggregateKind::RawPtr`, create a pointer from its parts.
///
/// Panics if the `layout` is not a raw pointer.
pub(crate) fn pointer_from_data_and_meta(
data: CValue<'tcx>,
meta: CValue<'tcx>,
layout: TyAndLayout<'tcx>,
) -> CValue<'tcx> {
assert!(layout.ty.is_unsafe_ptr());
let inner = match (data.0, meta.0) {
(CValueInner::ByVal(p), CValueInner::ByVal(m)) => CValueInner::ByValPair(p, m),
(p @ CValueInner::ByVal(_), CValueInner::ByRef(..)) if meta.1.is_zst() => p,
_ => bug!("RawPtr operands {data:?} {meta:?}"),
};
CValue(inner, layout)
}
pub(crate) fn layout(&self) -> TyAndLayout<'tcx> {
self.1
}