bjoernager/rust
bjoernager/rust
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remove inside_canonicalization_ctxt flag

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we never reach the code checking for this flag while the
flag is enabled, so it does not change the behavior
of the code.
This commit is contained in:
lcnr 2023-05-03 20:58:49 +02:00
parent 6bb1f792db
commit 0c5fe37786
5 changed files with 13 additions and 45 deletions
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32
compiler/rustc_infer/src/infer/mod.rs
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@ -39,7 +39,6 @@ use rustc_span::Span;
use std::cell::{Cell, RefCell};
use std::fmt;
use std::ops::Drop;
use self::combine::CombineFields;
use self::error_reporting::TypeErrCtxt;
@ -342,11 +341,6 @@ pub struct InferCtxt<'tcx> {
/// there is no type that the user could *actually name* that
/// would satisfy it. This avoids crippling inference, basically.
pub intercrate: bool,
/// Flag that is set when we enter canonicalization. Used for debugging to ensure
/// that we only collect region information for `BorrowckInferCtxt::reg_var_to_origin`
/// inside non-canonicalization contexts.
inside_canonicalization_ctxt: Cell<bool>,
}
/// See the `error_reporting` module for more details.
@ -638,7 +632,6 @@ impl<'tcx> InferCtxtBuilder<'tcx> {
skip_leak_check: Cell::new(false),
universe: Cell::new(ty::UniverseIndex::ROOT),
intercrate,
inside_canonicalization_ctxt: Cell::new(false),
}
}
}
@ -1636,31 +1629,6 @@ impl<'tcx> InferCtxt<'tcx> {
}
}
}
pub fn inside_canonicalization_ctxt(&self) -> bool {
self.inside_canonicalization_ctxt.get()
}
pub fn set_canonicalization_ctxt(&self) -> CanonicalizationCtxtGuard<'_, 'tcx> {
let prev_ctxt = self.inside_canonicalization_ctxt();
self.inside_canonicalization_ctxt.set(true);
CanonicalizationCtxtGuard { prev_ctxt, infcx: self }
}
fn set_canonicalization_ctxt_to(&self, ctxt: bool) {
self.inside_canonicalization_ctxt.set(ctxt);
}
}
pub struct CanonicalizationCtxtGuard<'cx, 'tcx> {
prev_ctxt: bool,
infcx: &'cx InferCtxt<'tcx>,
}
impl<'cx, 'tcx> Drop for CanonicalizationCtxtGuard<'cx, 'tcx> {
fn drop(&mut self) {
self.infcx.set_canonicalization_ctxt_to(self.prev_ctxt)
}
}
impl<'tcx> TypeErrCtxt<'_, 'tcx> {