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[rustc_data_structures] Simplify SortedMap::insert. #114313

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Aug 1, 2023
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[rustc_data_structures] Simplify SortedMap::insert. #114313

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5 changes: 2 additions & 3 deletions compiler/rustc_data_structures/src/sorted_map.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -49,12 +49,11 @@ impl<K: Ord, V> SortedMap<K, V> {
}

#[inline]
pub fn insert(&mut self, key: K, mut value: V) -> Option<V> {
pub fn insert(&mut self, key: K, value: V) -> Option<V> {
match self.lookup_index_for(&key) {
Ok(index) => {
let slot = unsafe { self.data.get_unchecked_mut(index) };
mem::swap(&mut slot.1, &mut value);
Some(value)
Some(mem::replace(&mut slot.1, value))
}
Err(index) => {
self.data.insert(index, (key, value));
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