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Fix unsized struct problems in mir eval

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This commit is contained in:
hkalbasi 2023-08-02 17:36:11 +03:30
parent a9d81ae89c
commit 6990d0f26a
7 changed files with 220 additions and 35 deletions
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37
crates/hir-ty/src/mir/lower.rs
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@ -1028,18 +1028,7 @@ impl<'ctx> MirLowerCtx<'ctx> {
self.push_assignment(current, lhs_place, r_value, expr_id.into());
return Ok(Some(current));
} else {
let Some((lhs_place, current)) =
self.lower_expr_as_place(current, *lhs, false)?
else {
return Ok(None);
};
let Some((rhs_op, current)) =
self.lower_expr_to_some_operand(*rhs, current)?
else {
return Ok(None);
};
self.push_assignment(current, lhs_place, rhs_op.into(), expr_id.into());
return Ok(Some(current));
return self.lower_assignment(current, *lhs, *rhs, expr_id.into());
}
}
let Some((lhs_op, current)) = self.lower_expr_to_some_operand(*lhs, current)?
@ -1285,6 +1274,30 @@ impl<'ctx> MirLowerCtx<'ctx> {
}
}
fn lower_assignment(
&mut self,
current: BasicBlockId,
lhs: ExprId,
rhs: ExprId,
span: MirSpan,
) -> Result<Option<BasicBlockId>> {
let Some((rhs_op, current)) =
self.lower_expr_to_some_operand(rhs, current)?
else {
return Ok(None);
};
if matches!(&self.body.exprs[lhs], Expr::Underscore) {
return Ok(Some(current));
}
let Some((lhs_place, current)) =
self.lower_expr_as_place(current, lhs, false)?
else {
return Ok(None);
};
self.push_assignment(current, lhs_place, rhs_op.into(), span);
Ok(Some(current))
}
fn placeholder_subst(&mut self) -> Substitution {
let placeholder_subst = match self.owner.as_generic_def_id() {
Some(it) => TyBuilder::placeholder_subst(self.db, it),