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Merge commit '258b15c506' into sync-from-ra

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Laurențiu Nicola 2023-09-18 12:32:37 +03:00
parent 7e786ea4cf
commit bcfc997eac
195 changed files with 5773 additions and 2750 deletions
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85
crates/hir-ty/src/mir/eval.rs
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@ -46,8 +46,8 @@ use crate::{
use super::{
return_slot, AggregateKind, BasicBlockId, BinOp, CastKind, LocalId, MirBody, MirLowerError,
MirSpan, Operand, Place, PlaceElem, ProjectionElem, Rvalue, StatementKind, TerminatorKind,
UnOp,
MirSpan, Operand, Place, PlaceElem, ProjectionElem, ProjectionStore, Rvalue, StatementKind,
TerminatorKind, UnOp,
};
mod shim;
@ -215,9 +215,7 @@ impl Interval {
}
fn write_from_interval(&self, memory: &mut Evaluator<'_>, interval: Interval) -> Result<()> {
// FIXME: this could be more efficient
let bytes = &interval.get(memory)?.to_vec();
memory.write_memory(self.addr, bytes)
memory.copy_from_interval(self.addr, interval)
}
fn slice(self, range: Range<usize>) -> Interval {
@ -341,7 +339,7 @@ pub enum MirEvalError {
InvalidVTableId(usize),
CoerceUnsizedError(Ty),
LangItemNotFound(LangItem),
BrokenLayout(Layout),
BrokenLayout(Box<Layout>),
}
impl MirEvalError {
@ -410,7 +408,7 @@ impl MirEvalError {
err.pretty_print(f, db, span_formatter)?;
}
MirEvalError::ConstEvalError(name, err) => {
MirLowerError::ConstEvalError(name.clone(), err.clone()).pretty_print(
MirLowerError::ConstEvalError((**name).into(), err.clone()).pretty_print(
f,
db,
span_formatter,
@ -485,17 +483,18 @@ struct DropFlags {
}
impl DropFlags {
fn add_place(&mut self, p: Place) {
if p.iterate_over_parents().any(|it| self.need_drop.contains(&it)) {
fn add_place(&mut self, p: Place, store: &ProjectionStore) {
if p.iterate_over_parents(store).any(|it| self.need_drop.contains(&it)) {
return;
}
self.need_drop.retain(|it| !p.is_parent(it));
self.need_drop.retain(|it| !p.is_parent(it, store));
self.need_drop.insert(p);
}
fn remove_place(&mut self, p: &Place) -> bool {
fn remove_place(&mut self, p: &Place, store: &ProjectionStore) -> bool {
// FIXME: replace parents with parts
if let Some(parent) = p.iterate_over_parents().find(|it| self.need_drop.contains(&it)) {
if let Some(parent) = p.iterate_over_parents(store).find(|it| self.need_drop.contains(&it))
{
self.need_drop.remove(&parent);
return true;
}
@ -656,7 +655,7 @@ impl Evaluator<'_> {
let mut addr = locals.ptr[p.local].addr;
let mut ty: Ty = locals.body.locals[p.local].ty.clone();
let mut metadata: Option<IntervalOrOwned> = None; // locals are always sized
for proj in &*p.projection {
for proj in p.projection.lookup(&locals.body.projection_store) {
let prev_ty = ty.clone();
ty = self.projected_ty(ty, proj.clone());
match proj {
@ -837,7 +836,9 @@ impl Evaluator<'_> {
let addr = self.place_addr(l, &locals)?;
let result = self.eval_rvalue(r, &mut locals)?.to_vec(&self)?;
self.write_memory(addr, &result)?;
locals.drop_flags.add_place(l.clone());
locals
.drop_flags
.add_place(l.clone(), &locals.body.projection_store);
}
StatementKind::Deinit(_) => not_supported!("de-init statement"),
StatementKind::StorageLive(_)
@ -889,7 +890,9 @@ impl Evaluator<'_> {
)?,
it => not_supported!("unknown function type {it:?}"),
};
locals.drop_flags.add_place(destination.clone());
locals
.drop_flags
.add_place(destination.clone(), &locals.body.projection_store);
if let Some(stack_frame) = stack_frame {
self.code_stack.push(my_stack_frame);
current_block_idx = stack_frame.locals.body.start_block;
@ -970,7 +973,7 @@ impl Evaluator<'_> {
) -> Result<()> {
let mut remain_args = body.param_locals.len();
for ((l, interval), value) in locals.ptr.iter().skip(1).zip(args) {
locals.drop_flags.add_place(l.into());
locals.drop_flags.add_place(l.into(), &locals.body.projection_store);
match value {
IntervalOrOwned::Owned(value) => interval.write_from_bytes(self, &value)?,
IntervalOrOwned::Borrowed(value) => interval.write_from_interval(self, value)?,
@ -1629,7 +1632,7 @@ impl Evaluator<'_> {
if let Some((offset, size, value)) = tag {
match result.get_mut(offset..offset + size) {
Some(it) => it.copy_from_slice(&value.to_le_bytes()[0..size]),
None => return Err(MirEvalError::BrokenLayout(variant_layout.clone())),
None => return Err(MirEvalError::BrokenLayout(Box::new(variant_layout.clone()))),
}
}
for (i, op) in values.enumerate() {
@ -1637,7 +1640,7 @@ impl Evaluator<'_> {
let op = op.get(&self)?;
match result.get_mut(offset..offset + op.len()) {
Some(it) => it.copy_from_slice(op),
None => return Err(MirEvalError::BrokenLayout(variant_layout.clone())),
None => return Err(MirEvalError::BrokenLayout(Box::new(variant_layout.clone()))),
}
}
Ok(result)
@ -1646,7 +1649,7 @@ impl Evaluator<'_> {
fn eval_operand(&mut self, it: &Operand, locals: &mut Locals) -> Result<Interval> {
Ok(match it {
Operand::Copy(p) | Operand::Move(p) => {
locals.drop_flags.remove_place(p);
locals.drop_flags.remove_place(p, &locals.body.projection_store);
self.eval_place(p, locals)?
}
Operand::Static(st) => {
@ -1760,6 +1763,48 @@ impl Evaluator<'_> {
Ok(())
}
fn copy_from_interval(&mut self, addr: Address, r: Interval) -> Result<()> {
if r.size == 0 {
return Ok(());
}
let oob = || MirEvalError::UndefinedBehavior("out of bounds memory write".to_string());
match (addr, r.addr) {
(Stack(dst), Stack(src)) => {
if self.stack.len() < src + r.size || self.stack.len() < dst + r.size {
return Err(oob());
}
self.stack.copy_within(src..src + r.size, dst)
}
(Heap(dst), Heap(src)) => {
if self.stack.len() < src + r.size || self.stack.len() < dst + r.size {
return Err(oob());
}
self.heap.copy_within(src..src + r.size, dst)
}
(Stack(dst), Heap(src)) => {
self.stack
.get_mut(dst..dst + r.size)
.ok_or_else(oob)?
.copy_from_slice(self.heap.get(src..src + r.size).ok_or_else(oob)?);
}
(Heap(dst), Stack(src)) => {
self.heap
.get_mut(dst..dst + r.size)
.ok_or_else(oob)?
.copy_from_slice(self.stack.get(src..src + r.size).ok_or_else(oob)?);
}
_ => {
return Err(MirEvalError::UndefinedBehavior(format!(
"invalid memory write at address {addr:?}"
)))
}
}
Ok(())
}
fn size_align_of(&self, ty: &Ty, locals: &Locals) -> Result<Option<(usize, usize)>> {
if let Some(layout) = self.layout_cache.borrow().get(ty) {
return Ok(layout
@ -2468,7 +2513,7 @@ impl Evaluator<'_> {
fn drop_place(&mut self, place: &Place, locals: &mut Locals, span: MirSpan) -> Result<()> {
let (addr, ty, metadata) = self.place_addr_and_ty_and_metadata(place, locals)?;
if !locals.drop_flags.remove_place(place) {
if !locals.drop_flags.remove_place(place, &locals.body.projection_store) {
return Ok(());
}
let metadata = match metadata {