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Reduce special treatment for zsts#67501

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bors merged 13 commits intorust-lang:masterrust-lang/rust:masterfrom

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Jan 10, 2020

Commits

Commits on Jan 7, 2020

• Automatically prefer integer addresses for zst MPlace

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  cc0fbdf

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• Remove a ZST special casing that is not necessary anymore

  oli-obk

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  5b770b0

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• Fix an ICE happening due code assuming that `MPlaceTy` cannot have integer addresses

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  4a5c35b

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• Move `to_const_value` from `MPlaceTy` to its only use site

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• Poison any `MemPlace` created from a zst Operand (or otherwise via `MPlaceTy::dangling`) so you can't get the address back out.

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• Ensure we don't accidentally turn non-zsts into zsts

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• Remove a bunch of dead functions and make some functions private

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• Add warning label to `try_as_mplace`

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• Add more documentation

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• Actually use the poison value

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Commits on Jan 9, 2020

• Update src/librustc_mir/interpret/place.rs

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  RalfJung

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• Rename `Unsized` to `Meta`

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• Switch assertion order to be more helpful to ppl that encounter them

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