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Ensure `ptr::read` gets all the same LLVM `load` metadata that dereferencing does#109035

Merged

bors merged 6 commits intorust-lang:masterrust-lang/rust:masterfrom

scottmcm:ptr-read-should-know-undefscottmcm/rust:ptr-read-should-know-undefCopy head branch name to clipboard

Mar 15, 2023

Conversation Commits6 (6)Checks Files changed

Merged

Ensure `ptr::read` gets all the same LLVM `load` metadata that dereferencing does#109035
bors merged 6 commits intorust-lang:masterfrom
scottmcm:ptr-read-should-know-undef

Commits

Commits on Mar 12, 2023

`MaybeUninit::assume_init_read` should have `noundef` load metadata
scottmcm
committed
Add a codegen test to confirm this fixes 106369
scottmcm
committed
Add a codegen test to confirm this fixes 73258
scottmcm
committed
Add a better approach comment in `ptr::read` to justify the intrinsic
scottmcm
committed

Commits on Mar 15, 2023

Improved implementation and comments after code review feedback
scottmcm
committed
Split the mem-replace codegen test
scottmcm
committed

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