bjoernager/rust
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Expand hash check.

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This commit is contained in:
Camille GILLOT 2022-09-04 22:42:05 +02:00
parent 5471381349
commit ee7a9a8641
2 changed files with 28 additions and 21 deletions
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17
compiler/rustc_query_system/src/dep_graph/graph.rs
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@ -513,15 +513,18 @@ impl<K: DepKind> DepGraph<K> {
hash_result: fn(&mut StableHashingContext<'_>, &R) -> Fingerprint,
) -> DepNodeIndex {
if let Some(data) = self.data.as_ref() {
// The caller query has more dependencies than the node we are creating. We may
// encounter a case where this created node is marked as green, but the caller query is
// subsequently marked as red or recomputed. In this case, we will end up feeding a
// value to an existing node.
//
// For sanity, we still check that the loaded stable hash and the new one match.
if let Some(dep_node_index) = self.dep_node_index_of_opt(&node) {
let _current_fingerprint =
crate::query::incremental_verify_ich(cx, result, &node, Some(hash_result));
#[cfg(debug_assertions)]
{
let hashing_timer = cx.profiler().incr_result_hashing();
let current_fingerprint =
cx.with_stable_hashing_context(|mut hcx| hash_result(&mut hcx, result));
hashing_timer.finish_with_query_invocation_id(dep_node_index.into());
data.current.record_edge(dep_node_index, node, current_fingerprint);
}
data.current.record_edge(dep_node_index, node, _current_fingerprint);
return dep_node_index;
}