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Make copy/copy_nonoverlapping fn's again #86003

Merged
merged 8 commits into from
Jun 9, 2021
Merged

Make copy/copy_nonoverlapping fn's again #86003

merged 8 commits into from
Jun 9, 2021

Commits on Jun 4, 2021

  1. Revert effects of PRs 81167 and 83091. 

    This is preparation for reverting 81238 for short-term resolution of issue 84297.
    @pnkfelix
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  2. Revert tests added by PR 81167.

    @pnkfelix
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  3. Revert PRs 81238 and 82967 (which made copy and copy_nonoverlapping i… 

    …ntrinsics).

This is to address issue 84297.
    @pnkfelix
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  4. Revert clippy's path to the copy intrinsics (part of reverting PR 812… 

    …38).
    @pnkfelix
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  5. Remove tests that were also added in PR 79684.

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  6. Change test to use likely/unlikely instead of copy/`copy_overla… 

    …pping`.

Test was added in PR rust-lang#84404.

The intent here is: The `copy`/`copy_overlapping` intrinsics are going through
some flip-flopping now of "are they intrinsics or not". We can achieve the same
effect that the test intended by using `likely`/`unlikely`.
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  7. With the revert of PR 83091, swap is not a const fn anymore. 

    (for the short term, that is; see issue 84297.)
    @pnkfelix
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  8. Regression test for issue 84297.

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