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Factor out common code in intern_node.

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There are three very similar blocks in this function.
This commit is contained in:
Nicholas Nethercote 2023-04-27 15:40:17 +10:00
parent 207cec017f
commit 793b2ffb67
1 changed files with 27 additions and 55 deletions
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82
compiler/rustc_query_system/src/dep_graph/graph.rs
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@ -1232,76 +1232,48 @@ impl<K: DepKind> CurrentDepGraph<K> {
self.node_intern_event_id.map(|eid| profiler.generic_activity_with_event_id(eid));
if let Some(prev_index) = prev_graph.node_to_index_opt(&key) {
// Determine the color and index of the new `DepNode`.
if let Some(fingerprint) = fingerprint {
if fingerprint == prev_graph.fingerprint_by_index(prev_index) {
if print_status {
eprintln!("[task::green] {key:?}");
}
// This is a green node: it existed in the previous compilation,
// its query was re-executed, and it has the same result as before.
let mut prev_index_to_index = self.prev_index_to_index.lock();
let dep_node_index = match prev_index_to_index[prev_index] {
Some(dep_node_index) => dep_node_index,
None => {
let dep_node_index =
self.encoder.borrow().send(profiler, key, fingerprint, edges);
prev_index_to_index[prev_index] = Some(dep_node_index);
dep_node_index
}
};
#[cfg(debug_assertions)]
self.record_edge(dep_node_index, key, fingerprint);
(dep_node_index, Some((prev_index, DepNodeColor::Green(dep_node_index))))
} else {
if print_status {
eprintln!("[task::red] {key:?}");
}
// This is a red node: it existed in the previous compilation, its query
// was re-executed, but it has a different result from before.
let mut prev_index_to_index = self.prev_index_to_index.lock();
let dep_node_index = match prev_index_to_index[prev_index] {
Some(dep_node_index) => dep_node_index,
None => {
let dep_node_index =
self.encoder.borrow().send(profiler, key, fingerprint, edges);
prev_index_to_index[prev_index] = Some(dep_node_index);
dep_node_index
}
};
#[cfg(debug_assertions)]
self.record_edge(dep_node_index, key, fingerprint);
(dep_node_index, Some((prev_index, DepNodeColor::Red)))
}
} else {
let get_dep_node_index = |color, fingerprint| {
if print_status {
eprintln!("[task::unknown] {key:?}");
eprintln!("[task::{color:}] {key:?}");
}
// This is a red node, effectively: it existed in the previous compilation
// session, its query was re-executed, but it doesn't compute a result hash
// (i.e. it represents a `no_hash` query), so we have no way of determining
// whether or not the result was the same as before.
let mut prev_index_to_index = self.prev_index_to_index.lock();
let dep_node_index = match prev_index_to_index[prev_index] {
Some(dep_node_index) => dep_node_index,
None => {
let dep_node_index =
self.encoder.borrow().send(profiler, key, Fingerprint::ZERO, edges);
self.encoder.borrow().send(profiler, key, fingerprint, edges);
prev_index_to_index[prev_index] = Some(dep_node_index);
dep_node_index
}
};
#[cfg(debug_assertions)]
self.record_edge(dep_node_index, key, Fingerprint::ZERO);
self.record_edge(dep_node_index, key, fingerprint);
dep_node_index
};
// Determine the color and index of the new `DepNode`.
if let Some(fingerprint) = fingerprint {
if fingerprint == prev_graph.fingerprint_by_index(prev_index) {
// This is a green node: it existed in the previous compilation,
// its query was re-executed, and it has the same result as before.
let dep_node_index = get_dep_node_index("green", fingerprint);
(dep_node_index, Some((prev_index, DepNodeColor::Green(dep_node_index))))
} else {
// This is a red node: it existed in the previous compilation, its query
// was re-executed, but it has a different result from before.
let dep_node_index = get_dep_node_index("red", fingerprint);
(dep_node_index, Some((prev_index, DepNodeColor::Red)))
}
} else {
// This is a red node, effectively: it existed in the previous compilation
// session, its query was re-executed, but it doesn't compute a result hash
// (i.e. it represents a `no_hash` query), so we have no way of determining
// whether or not the result was the same as before.
let dep_node_index = get_dep_node_index("unknown", Fingerprint::ZERO);
(dep_node_index, Some((prev_index, DepNodeColor::Red)))
}
} else {