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Do not store stable crate id in on-disk hash map.

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This commit is contained in:
Camille GILLOT
2023-12-24 12:41:35 +00:00
parent 75ad81ce93
commit 821920b2a3
4 changed files with 17 additions and 13 deletions
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17
compiler/rustc_hir/src/def_path_hash_map.rs
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@@ -1,21 +1,22 @@
use rustc_data_structures::fingerprint::Fingerprint;
use rustc_span::def_id::{DefIndex, DefPathHash};
use rustc_data_structures::stable_hasher::Hash64;
use rustc_span::def_id::DefIndex;
#[derive(Clone, Default)]
pub struct Config;
impl odht::Config for Config {
type Key = DefPathHash;
// This hash-map is single-crate, so we only need to key by the local hash.
type Key = Hash64;
type Value = DefIndex;
type EncodedKey = [u8; 16];
type EncodedKey = [u8; 8];
type EncodedValue = [u8; 4];
type H = odht::UnHashFn;
#[inline]
fn encode_key(k: &DefPathHash) -> [u8; 16] {
k.0.to_le_bytes()
fn encode_key(k: &Hash64) -> [u8; 8] {
k.as_u64().to_le_bytes()
}
#[inline]
@@ -24,8 +25,8 @@ impl odht::Config for Config {
}
#[inline]
fn decode_key(k: &[u8; 16]) -> DefPathHash {
DefPathHash(Fingerprint::from_le_bytes(*k))
fn decode_key(k: &[u8; 8]) -> Hash64 {
Hash64::new(u64::from_le_bytes(*k))
}
#[inline]