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Use PackedFingerprint in DepNode to reduce memory consumption

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This commit is contained in:
Tyson Nottingham
2020-11-03 22:23:08 -08:00
parent 8d2d001492
commit f09d474836
4 changed files with 60 additions and 9 deletions
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4
compiler/rustc_query_system/src/dep_graph/graph.rs
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@@ -1,4 +1,4 @@
use rustc_data_structures::fingerprint::Fingerprint;
use rustc_data_structures::fingerprint::{Fingerprint, PackedFingerprint};
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_data_structures::profiling::QueryInvocationId;
use rustc_data_structures::sharded::{self, Sharded};
@@ -976,7 +976,7 @@ impl<K: DepKind> CurrentDepGraph<K> {
// Fingerprint::combine() is faster than sending Fingerprint
// through the StableHasher (at least as long as StableHasher
// is so slow).
hash: self.anon_id_seed.combine(hasher.finish()),
hash: PackedFingerprint(self.anon_id_seed.combine(hasher.finish())),
};
self.intern_node(target_dep_node, task_deps.reads, Fingerprint::ZERO)