Remove unsound `target_feature_inline_always` feature#156242

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Jamesbarford wants to merge 6 commits into

rust-lang:mainfrom

Jamesbarford:feat/remove-alwaysinline+target-feature

Commits on May 7, 2026

Remove #[inline(always)] + #[target_feature(enable = "<feature>")] support, reinstating error message and providing a link to the tracking issue for the full rationale.
Jamesbarford
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Remove `target_feature_inline_always` from core, std and stdarch `lib.rs`'s
Jamesbarford
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Update tests to reflect changes, deleted ones that are now irrelevant
Jamesbarford
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Commits on May 14, 2026

PR Feedback - grammatical changes, clear reason for removal and move `register_removed(...)` call
Jamesbarford
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Commits on May 15, 2026