1 files changed, 0 insertions, 130 deletions
diff --git a/compiler/rustc_session/src/cgu_reuse_tracker.rs b/compiler/rustc_session/src/cgu_reuse_tracker.rs
deleted file mode 100644
index 74b68fa7d35..00000000000
--- a/compiler/rustc_session/src/cgu_reuse_tracker.rs
+++ /dev/null
@@ -1,130 +0,0 @@
-//! Some facilities for tracking how codegen-units are reused during incremental
-//! compilation. This is used for incremental compilation tests and debug
-//! output.
-
-use crate::errors::{CguNotRecorded, IncorrectCguReuseType};
-use crate::Session;
-use rustc_data_structures::fx::FxHashMap;
-use rustc_errors::{DiagnosticArgValue, IntoDiagnosticArg};
-use rustc_span::{Span, Symbol};
-use std::borrow::Cow;
-use std::fmt::{self};
-use std::sync::{Arc, Mutex};
-
-#[derive(Copy, Clone, Debug, PartialEq, PartialOrd)]
-pub enum CguReuse {
-    No,
-    PreLto,
-    PostLto,
-}
-
-impl fmt::Display for CguReuse {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match *self {
-            CguReuse::No => write!(f, "No"),
-            CguReuse::PreLto => write!(f, "PreLto "),
-            CguReuse::PostLto => write!(f, "PostLto "),
-        }
-    }
-}
-
-impl IntoDiagnosticArg for CguReuse {
-    fn into_diagnostic_arg(self) -> DiagnosticArgValue<'static> {
-        DiagnosticArgValue::Str(Cow::Owned(self.to_string()))
-    }
-}
-
-#[derive(Copy, Clone, Debug, PartialEq)]
-pub enum ComparisonKind {
-    Exact,
-    AtLeast,
-}
-
-struct TrackerData {
-    actual_reuse: FxHashMap<String, CguReuse>,
-    expected_reuse: FxHashMap<String, (String, SendSpan, CguReuse, ComparisonKind)>,
-}
-
-// Span does not implement `Send`, so we can't just store it in the shared
-// `TrackerData` object. Instead of splitting up `TrackerData` into shared and
-// non-shared parts (which would be complicated), we just mark the `Span` here
-// explicitly as `Send`. That's safe because the span data here is only ever
-// accessed from the main thread.
-struct SendSpan(Span);
-unsafe impl Send for SendSpan {}
-
-#[derive(Clone)]
-pub struct CguReuseTracker {
-    data: Option<Arc<Mutex<TrackerData>>>,
-}
-
-impl CguReuseTracker {
-    pub fn new() -> CguReuseTracker {
-        let data =
-            TrackerData { actual_reuse: Default::default(), expected_reuse: Default::default() };
-
-        CguReuseTracker { data: Some(Arc::new(Mutex::new(data))) }
-    }
-
-    pub fn new_disabled() -> CguReuseTracker {
-        CguReuseTracker { data: None }
-    }
-
-    pub fn set_actual_reuse(&self, cgu_name: &str, kind: CguReuse) {
-        if let Some(ref data) = self.data {
-            debug!("set_actual_reuse({cgu_name:?}, {kind:?})");
-
-            let prev_reuse = data.lock().unwrap().actual_reuse.insert(cgu_name.to_string(), kind);
-            assert!(prev_reuse.is_none());
-        }
-    }
-
-    pub fn set_expectation(
-        &self,
-        cgu_name: Symbol,
-        cgu_user_name: &str,
-        error_span: Span,
-        expected_reuse: CguReuse,
-        comparison_kind: ComparisonKind,
-    ) {
-        if let Some(ref data) = self.data {
-            debug!("set_expectation({cgu_name:?}, {expected_reuse:?}, {comparison_kind:?})");
-            let mut data = data.lock().unwrap();
-
-            data.expected_reuse.insert(
-                cgu_name.to_string(),
-                (cgu_user_name.to_string(), SendSpan(error_span), expected_reuse, comparison_kind),
-            );
-        }
-    }
-
-    pub fn check_expected_reuse(&self, sess: &Session) {
-        if let Some(ref data) = self.data {
-            let data = data.lock().unwrap();
-
-            for (cgu_name, &(ref cgu_user_name, ref error_span, expected_reuse, comparison_kind)) in
-                &data.expected_reuse
-            {
-                if let Some(&actual_reuse) = data.actual_reuse.get(cgu_name) {
-                    let (error, at_least) = match comparison_kind {
-                        ComparisonKind::Exact => (expected_reuse != actual_reuse, false),
-                        ComparisonKind::AtLeast => (actual_reuse < expected_reuse, true),
-                    };
-
-                    if error {
-                        let at_least = if at_least { 1 } else { 0 };
-                        IncorrectCguReuseType {
-                            span: error_span.0,
-                            cgu_user_name,
-                            actual_reuse,
-                            expected_reuse,
-                            at_least,
-                        };
-                    }
-                } else {
-                    sess.emit_fatal(CguNotRecorded { cgu_user_name, cgu_name });
-                }
-            }
-        }
-    }
-}