bjoernager/rust
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Unify validity checks into a single query

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Previously, there were two queries to check whether a type allows the
0x01 or zeroed bitpattern.

I am planning on adding a further initness to check, truly uninit for
MaybeUninit, which would make this three queries. This seems overkill
for such a small feature, so this PR unifies them into one.
This commit is contained in:
Nilstrieb 2023-02-22 20:51:29 +00:00
parent b869e84e58
commit 025d2a147f
11 changed files with 89 additions and 67 deletions
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8
compiler/rustc_middle/src/query/mod.rs
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@ -2173,12 +2173,8 @@ rustc_queries! {
separate_provide_extern
}
query permits_uninit_init(key: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> Result<bool, ty::layout::LayoutError<'tcx>> {
desc { "checking to see if `{}` permits being left uninit", key.value }
}
query permits_zero_init(key: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> Result<bool, ty::layout::LayoutError<'tcx>> {
desc { "checking to see if `{}` permits being left zeroed", key.value }
query check_validity_of_init(key: (InitKind, ty::ParamEnvAnd<'tcx, Ty<'tcx>>)) -> Result<bool, ty::layout::LayoutError<'tcx>> {
desc { "checking to see if `{}` permits being left {}", key.1.value, key.0 }
}
query compare_impl_const(