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Simplify slice::Iter::next enough that it inlines#136771

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bors merged 4 commits intorust-lang:masterfrom
scottmcm:poke-slice-iter-next
Feb 20, 2025
Merged

Simplify slice::Iter::next enough that it inlines#136771
bors merged 4 commits intorust-lang:masterfrom
scottmcm:poke-slice-iter-next

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@scottmcm scottmcm commented Feb 9, 2025

Inspired by this zulip conversation: https://rust-lang.zulipchat.com/#narrow/channel/189540-t-compiler.2Fwg-mir-opt/topic/Feedback.20on.20a.20MIR.20optimization.20idea/near/498579990

Draft for now because it needs #136735 to get the codegen tests to pass.

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merged-by-bors This PR was explicitly merged by bors. perf-regression Performance regression. perf-regression-triaged The performance regression has been triaged. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-libs Relevant to the library team, which will review and decide on the PR/issue.

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