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Use IndexVec::from_elem_n

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This commit is contained in:
John Kåre Alsaker
2025-04-22 03:43:10 +02:00
parent c6735f92c1
commit 4ec74df81f
1 changed files with 7 additions and 10 deletions
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compiler/rustc_query_system/src/dep_graph/serialized.rs
+7 -10
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@@ -200,16 +200,13 @@ pub fn decode<D: Deps>(d: &mut MemDecoder<'_>, deps: &D) -> Arc<SerializedDepGra
let graph_bytes = d.len() - (2 * IntEncodedWithFixedSize::ENCODED_SIZE) - d.position();
let mut nodes: IndexVec<SerializedDepNodeIndex, _> = (0..node_count)
.map(|_| DepNode {
kind: D::DEP_KIND_NULL,
hash: PackedFingerprint::from(Fingerprint::ZERO),
})
.collect();
let mut fingerprints: IndexVec<SerializedDepNodeIndex, _> =
(0..node_count).map(|_| Fingerprint::ZERO).collect();
let mut edge_list_indices: IndexVec<SerializedDepNodeIndex, _> =
(0..node_count).map(|_| EdgeHeader { repr: 0, edges: 0 }).collect();
let mut nodes = IndexVec::from_elem_n(
DepNode { kind: D::DEP_KIND_NULL, hash: PackedFingerprint::from(Fingerprint::ZERO) },
node_count,
);
let mut fingerprints = IndexVec::from_elem_n(Fingerprint::ZERO, node_count);
let mut edge_list_indices =
IndexVec::from_elem_n(EdgeHeader { repr: 0, edges: 0 }, node_count);
// This estimation assumes that all of the encoded bytes are for the edge lists or for the
// fixed-size node headers. But that's not necessarily true; if any edge list has a length