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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7
compiler/rustc_const_eval/src/lib.rs
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@ -38,7 +38,6 @@ use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage};
use rustc_macros::fluent_messages;
use rustc_middle::ty;
use rustc_middle::ty::query::Providers;
use rustc_target::abi::InitKind;
fluent_messages! { "../locales/en-US.ftl" }
@ -62,9 +61,7 @@ pub fn provide(providers: &mut Providers) {
let (param_env, value) = param_env_and_value.into_parts();
const_eval::deref_mir_constant(tcx, param_env, value)
};
providers.permits_uninit_init = |tcx, param_env_and_ty| {
util::might_permit_raw_init(tcx, param_env_and_ty, InitKind::UninitMitigated0x01Fill)
providers.check_validity_of_init = |tcx, (init_kind, param_env_and_ty)| {
util::might_permit_raw_init(tcx, init_kind, param_env_and_ty)
};
providers.permits_zero_init =
|tcx, param_env_and_ty| util::might_permit_raw_init(tcx, param_env_and_ty, InitKind::Zero);
}