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Auto merge of #110040 - ndrewxie:issue-84447-partial-1, r=lcnr,michaelwoerister

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Removed use of iteration through a HashMap/HashSet in rustc_incremental and replaced with IndexMap/IndexSet

This allows for the `#[allow(rustc::potential_query_instability)]` in rustc_incremental to be removed, moving towards fixing #84447 (although a LOT more modules have to be changed to fully resolve it). Only HashMaps/HashSets that are being iterated through have been modified (although many structs and traits outside of rustc_incremental had to be modified as well, as they had fields/methods that involved a HashMap/HashSet that would be iterated through)

I'm making a PR for just 1 module changed to test for performance regressions and such, for future changes I'll either edit this PR to reflect additional modules being converted, or batch multiple modules of changes together and make a PR for each group of modules.
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bors 2023-06-08 07:30:03 +00:00
commit a0df04c0f2
25 changed files with 259 additions and 190 deletions
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4
compiler/rustc_session/src/config.rs
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@ -311,7 +311,9 @@ pub enum OutputType {
}
// Safety: Trivial C-Style enums have a stable sort order across compilation sessions.
unsafe impl StableOrd for OutputType {}
unsafe impl StableOrd for OutputType {
const CAN_USE_UNSTABLE_SORT: bool = true;
}
impl<HCX: HashStableContext> ToStableHashKey<HCX> for OutputType {
type KeyType = Self;