rename debugging support functions

Author: lqd

Diff for: compiler/rustc_borrowck/src/region_infer/dump_mir.rs

@@ -67,7 +67,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
         with_msg: &mut dyn FnMut(&str) -> io::Result<()>,
     ) -> io::Result<()> {
         for region in self.definitions.indices() {
-            let value = self.liveness_constraints.region_value_str(region);
+            let value = self.liveness_constraints.pretty_print_live_points(region);
             if value != "{}" {
                 with_msg(&format!("{region:?} live at {value}"))?;
             }

Diff for: compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -1970,7 +1970,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
         trace!(universe = ?self.scc_universes[self.constraint_sccs.scc(fr1)]);
         self.find_constraint_paths_between_regions(fr1, |r| {
             // First look for some `r` such that `fr1: r` and `r` is live at `location`
-            trace!(?r, liveness_constraints=?self.liveness_constraints.region_value_str(r));
+            trace!(?r, liveness_constraints=?self.liveness_constraints.pretty_print_live_points(r));
             self.liveness_constraints.is_live_at(r, location)
         })
         .or_else(|| {

Diff for: compiler/rustc_borrowck/src/region_infer/values.rs

@@ -172,9 +172,10 @@ impl LivenessValues {
             .take_while(|&p| self.elements.point_in_range(p))
     }
 
-    /// Returns a "pretty" string value of the region. Meant for debugging.
-    pub(crate) fn region_value_str(&self, region: RegionVid) -> String {
-        region_value_str(
+    /// For debugging purposes, returns a pretty-printed string of the points where the `region` is
+    /// live.
+    pub(crate) fn pretty_print_live_points(&self, region: RegionVid) -> String {
+        pretty_print_region_elements(
             self.live_points(region).map(|p| RegionElement::Location(self.elements.to_location(p))),
         )
     }
@@ -378,7 +379,7 @@ impl<N: Idx> RegionValues<N> {
 
     /// Returns a "pretty" string value of the region. Meant for debugging.
     pub(crate) fn region_value_str(&self, r: N) -> String {
-        region_value_str(self.elements_contained_in(r))
+        pretty_print_region_elements(self.elements_contained_in(r))
     }
 }
 
@@ -422,11 +423,12 @@ impl ToElementIndex for ty::PlaceholderRegion {
     }
 }
 
-pub(crate) fn location_set_str(
+/// For debugging purposes, returns a pretty-printed string of the given points.
+pub(crate) fn pretty_print_points(
     elements: &RegionValueElements,
     points: impl IntoIterator<Item = PointIndex>,
 ) -> String {
-    region_value_str(
+    pretty_print_region_elements(
         points
             .into_iter()
             .take_while(|&p| elements.point_in_range(p))
@@ -435,7 +437,8 @@ pub(crate) fn location_set_str(
     )
 }
 
-fn region_value_str(elements: impl IntoIterator<Item = RegionElement>) -> String {
+/// For debugging purposes, returns a pretty-printed string of the given region elements.
+fn pretty_print_region_elements(elements: impl IntoIterator<Item = RegionElement>) -> String {
     let mut result = String::new();
     result.push('{');
 

Diff for: compiler/rustc_borrowck/src/type_check/liveness/trace.rs

@@ -550,7 +550,7 @@ impl<'tcx> LivenessContext<'_, '_, '_, 'tcx> {
             dropped_local,
             dropped_ty,
             drop_locations,
-            values::location_set_str(self.elements, live_at.iter()),
+            values::pretty_print_points(self.elements, live_at.iter()),
         );
 
         let drop_data = self.drop_data.entry(dropped_ty).or_insert_with({
@@ -599,7 +599,7 @@ impl<'tcx> LivenessContext<'_, '_, '_, 'tcx> {
         debug!("make_all_regions_live(value={:?})", value);
         debug!(
             "make_all_regions_live: live_at={}",
-            values::location_set_str(elements, live_at.iter()),
+            values::pretty_print_points(elements, live_at.iter()),
         );
 
         // When using `-Zpolonius=next`, we want to record the loans that flow into this value's