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Prototype: Add unstable `-Z reference-niches` option#113166

Merged

bors merged 13 commits into

rust-lang:masterrust-lang/rust:masterfrom

moulins:ref-niches-initialmoulins/rust:ref-niches-initialCopy head branch name to clipboard

Jul 21, 2023

Conversation Commits13 (13)Checks Files changed

Merged

Prototype: Add unstable `-Z reference-niches` option#113166
bors merged 13 commits into
rust-lang:masterfrom
moulins:ref-niches-initial

Commits

Commits on Jul 21, 2023

add `naive_layout_of` query
moulins
committed
properly handle arrays and wide pointers in `naive_layout_of`
moulins
committed
add crate-local `-Z reference_niches` unstable flag (does nothing for now)
moulins
committed
restrict the valid range of references if `-Z reference-niches` is set
moulins
committed
support non-null pointer niches in CTFE
moulins
committed
recover null-ptr optimization by adding a special case to the niching logic
moulins
committed
Don't treat ref. fields with non-null niches as `dereferenceable_or_null`
moulins
committed
Track exactness in `NaiveLayout` and use it for `SizeSkeleton` checks
moulins
committed
Track ABI info. in `NaiveLayout`, and use it for `PointerLike` checks
moulins
committed
Add doc-comments for `NaiveLayout`
moulins
committed
Move `naive_layout_of` query provider in separate sibling module
moulins
committed
CTFE: move `target_{i, u}size_{min, max)` to `rustc_abi::TargetDataLayout`
moulins
committed
Track (partial) niche information in `NaiveLayout`
moulins
committed

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