iterate over regions and not "rows" in liveness values

Author: lqd

compiler/rustc_borrowck/src/region_infer/mod.rs

@@ -359,7 +359,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
         let mut scc_values =
             RegionValues::new(elements, universal_regions.len(), &placeholder_indices);
 
-        for region in liveness_constraints.rows() {
+        for region in liveness_constraints.regions() {
             let scc = constraint_sccs.scc(region);
             scc_values.merge_liveness(scc, region, &liveness_constraints);
         }

compiler/rustc_borrowck/src/region_infer/values.rs

@@ -132,7 +132,7 @@ impl<N: Idx> LivenessValues<N> {
     }
 
     /// Iterate through each region that has a value in this set.
-    pub(crate) fn rows(&self) -> impl Iterator<Item = N> {
+    pub(crate) fn regions(&self) -> impl Iterator<Item = N> {
         self.points.rows()
     }
 

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -592,7 +592,7 @@ impl<'a, 'b, 'tcx> TypeVerifier<'a, 'b, 'tcx> {
             }
             self.cx.borrowck_context.constraints.outlives_constraints.push(constraint)
         }
-        for region in liveness_constraints.rows() {
+        for region in liveness_constraints.regions() {
             // If the region is live at at least one location in the promoted MIR,
             // then add a liveness constraint to the main MIR for this region
             // at the location provided as an argument to this method