Various borrowck cleanups and param_env/opaque_types_defined_by query simplifications for typeck children - #158360

Merged

rust-bors[bot] merged 6 commits into

rust-lang:mainfrom

oli-obk:borrowck-cleanups

Jun 27, 2026

Commits on Jun 24, 2026

Move some methods that only need the region context onto that
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b429456
Consistently taint root cx
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7ebb859
Remove some unnecessary mutabilities
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f44093d
Typeck children always have the same param env as their parent
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7102a6c
Don't compute opaque types for typeck children. They are always the same as their parent
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7cb94f0
Add a convenience helper for doing type ops
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7ccc34f