Fix parallel rustc not being reproducible due to unstable sorts of items #144886
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Fix parallel rustc not being reproducible due to unstable sorts of items
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Currently, A tuple
(DefId, SymbolName)is used to determine the order of items in the final binary. HoweverDefIdis expected as non-deterministic, which leads to some not reproducible issues under parallel compilation.Here we use
(Span, SymbolName)to replace(DefId, SymbolName)and make them sorted.This PR is purposed to fix #140425, but seemly works on #140413 too.
This behavior hasn't added into any test until we have a test suit for the parallel frontend. (See #143953)
Related discussion: Zulip #144576
Update #113349
r? @SparrowLii