Auto merge of #93511 - cjgillot:query-copy, r=oli-obk

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Ensure that queries only return Copy types.

This should pervent the perf footgun of returning a result with an expensive `Clone` impl (like a `Vec` of a hash map).

I went for the stupid solution of allocating on an arena everything that was not `Copy`. Some query results could be made Copy easily, but I did not really investigate.

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bors 2022-02-10 09:37:07 +00:00

parent 20506e31ab 1b2337c19d

commit 22a30689ed

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