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use sort_unstable to sort primitive types

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It's not important to retain original order if we have &[1, 1, 2, 3] for example.

clippy::stable_sort_primitive
This commit is contained in:
Matthias Krüger
2020-09-10 00:03:58 +02:00
parent d92155bf6a
commit b4935e0726
6 changed files with 16 additions and 9 deletions
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5
compiler/rustc_ast_lowering/src/expr.rs
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@@ -1121,7 +1121,7 @@ impl<'hir> LoweringContext<'_, 'hir> {
// features. We check that at least one type is available for
// the current target.
let reg_class = reg.reg_class();
let mut required_features = vec![];
let mut required_features: Vec<&str> = vec![];
for &(_, feature) in reg_class.supported_types(asm_arch) {
if let Some(feature) = feature {
if self.sess.target_features.contains(&Symbol::intern(feature)) {
@@ -1135,7 +1135,8 @@ impl<'hir> LoweringContext<'_, 'hir> {
break;
}
}
required_features.sort();
// We are sorting primitive strs here and can use unstable sort here
required_features.sort_unstable();
required_features.dedup();
match &required_features[..] {
[] => {}