Remove support for legacy PM #101997
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Remove support for legacy PM #101997
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Co-authored-by: Andreas Jonson <andjo403@users.noreply.github.com>
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…fee1-dead Rollup of 8 pull requests Successful merges: - rust-lang#98111 (Clarify `[T]::select_nth_unstable*` return values) - rust-lang#101431 (Look at move place's type when suggesting mutable reborrow) - rust-lang#101800 (Constify slice.split_at_mut(_unchecked)) - rust-lang#101997 (Remove support for legacy PM) - rust-lang#102194 (Note the type when unable to drop values in compile time) - rust-lang#102200 (Constify Default impl's for Arrays and Tuples.) - rust-lang#102245 (Constify cmp_min_max_by.) - rust-lang#102259 (Type-annotate and simplify documentation of Option::unwrap_or_default) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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This removes support for optimizing with LLVM's legacy pass manager, as well as the unstable
-Znew-llvm-pass-manageroption. We have been defaulting to the new PM since LLVM 13 (except for s390x that waited for 14), and LLVM 15 removed support altogether. The only place we still use the legacy PM is for writing the output file, just likellcdoes.cc #74705
r? @nikic