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Remove unused cache.

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This commit is contained in:
Camille GILLOT 2022-08-06 23:09:15 +02:00
parent a09e9c99a4
commit d74af405eb
1 changed files with 0 additions and 10 deletions
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10
compiler/rustc_metadata/src/rmeta/decoder.rs
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@ -162,9 +162,6 @@ pub(super) struct DecodeContext<'a, 'tcx> {
sess: Option<&'tcx Session>,
tcx: Option<TyCtxt<'tcx>>,
// Cache the last used source_file for translating spans as an optimization.
last_source_file_index: usize,
lazy_state: LazyState,
// Used for decoding interpret::AllocIds in a cached & thread-safe manner.
@ -193,7 +190,6 @@ pub(super) trait Metadata<'a, 'tcx>: Copy {
blob: self.blob(),
sess: self.sess().or(tcx.map(|tcx| tcx.sess)),
tcx,
last_source_file_index: 0,
lazy_state: LazyState::NoNode,
alloc_decoding_session: self
.cdata()
@ -582,12 +578,6 @@ impl<'a, 'tcx> Decodable<DecodeContext<'a, 'tcx>> for Span {
cnum
);
// Decoding 'foreign' spans should be rare enough that it's
// not worth it to maintain a per-CrateNum cache for `last_source_file_index`.
// We just set it to 0, to ensure that we don't try to access something out
// of bounds for our initial 'guess'
decoder.last_source_file_index = 0;
let foreign_data = decoder.cdata().cstore.get_crate_data(cnum);
foreign_data.imported_source_file(metadata_index, sess)
};