Consider parent predicates in ImpossiblePredicates pass. #144233
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Some changes occurred to MIR optimizations cc @rust-lang/wg-mir-opt |
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oli-obk
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Jul 21, 2025
| .predicates | ||
| .iter() | ||
| .filter_map(|(p, _)| if p.is_global() { Some(*p) } else { None }); | ||
| if traits::impossible_predicates(tcx, traits::elaborate(tcx, predicates).collect()) { |
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We still need to elaborate the filtered predicates I presume?
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This pass is double edged. It avoids some ICEs (yay!) but also degrades diagnostics from constant evaluation.
Fixes #121363
Fixes #131507
Fixes #140100
Fixes #140365