update polonius-engine to 0.13

and update fact generation to the new relation names

Cargo.lock

@@ -2618,9 +2618,9 @@ checksum = "d36492546b6af1463394d46f0c834346f31548646f6ba10849802c9c9a27ac33"
 
 [[package]]
 name = "polonius-engine"
-version = "0.12.1"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef2558a4b464e185b36ee08a2937ebb62ea5464c38856cfb1465c97cb38db52d"
+checksum = "c4e8e505342045d397d0b6674dcb82d6faf5cf40484d30eeb88fc82ef14e903f"
 dependencies = [
  "datafrog",
  "log",

compiler/rustc_middle/Cargo.toml

@@ -11,7 +11,7 @@ rustc_arena = { path = "../rustc_arena" }
 bitflags = "1.2.1"
 tracing = "0.1"
 rustc-rayon-core = "0.3.1"
-polonius-engine = "0.12.0"
+polonius-engine = "0.13.0"
 rustc_apfloat = { path = "../rustc_apfloat" }
 rustc_attr = { path = "../rustc_attr" }
 rustc_feature = { path = "../rustc_feature" }

compiler/rustc_mir/Cargo.toml

@@ -12,7 +12,7 @@ rustc_graphviz = { path = "../rustc_graphviz" }
 gsgdt = "0.1.2"
 itertools = "0.9"
 tracing = "0.1"
-polonius-engine = "0.12.0"
+polonius-engine = "0.13.0"
 regex = "1"
 rustc_middle = { path = "../rustc_middle" }
 rustc_attr = { path = "../rustc_attr" }

compiler/rustc_mir/src/borrow_check/constraint_generation.rs

@@ -224,7 +224,7 @@ impl<'cx, 'cg, 'tcx> ConstraintGeneration<'cx, 'cg, 'tcx> {
 
                             if places_conflict {
                                 let location_index = self.location_table.mid_index(location);
-                                all_facts.killed.push((borrow_index, location_index));
+                                all_facts.loan_killed_at.push((borrow_index, location_index));
                             }
                         }
                     }
@@ -243,10 +243,10 @@ fn record_killed_borrows_for_local(
     location: Location,
 ) {
     if let Some(borrow_indices) = borrow_set.local_map.get(&local) {
-        all_facts.killed.reserve(borrow_indices.len());
+        all_facts.loan_killed_at.reserve(borrow_indices.len());
         for &borrow_index in borrow_indices {
             let location_index = location_table.mid_index(location);
-            all_facts.killed.push((borrow_index, location_index));
+            all_facts.loan_killed_at.push((borrow_index, location_index));
         }
     }
 }

compiler/rustc_mir/src/borrow_check/facts.rs

@@ -64,13 +64,12 @@ impl AllFactsExt for AllFacts {
         }
         write_facts_to_path! {
             wr.write_facts_to_path(self.[
-                borrow_region,
+                loan_issued_at,
                 universal_region,
-                placeholder,
                 cfg_edge,
-                killed,
+                loan_killed_at,
-                outlives,
+                subset_base,
-                invalidates,
+                loan_invalidated_at,
                 var_used_at,
                 var_defined_at,
                 var_dropped_at,
@@ -81,7 +80,8 @@ impl AllFactsExt for AllFacts {
                 path_assigned_at_base,
                 path_moved_at_base,
                 path_accessed_at_base,
-                known_subset,
+                known_placeholder_subset,
+                placeholder,
             ])
         }
         Ok(())

compiler/rustc_mir/src/borrow_check/invalidation.rs

@@ -179,7 +179,7 @@ impl<'cx, 'tcx> Visitor<'tcx> for InvalidationGenerator<'cx, 'tcx> {
                 let resume = self.location_table.start_index(resume.start_location());
                 for (i, data) in borrow_set.iter_enumerated() {
                     if borrow_of_local_data(data.borrowed_place) {
-                        self.all_facts.invalidates.push((resume, i));
+                        self.all_facts.loan_invalidated_at.push((resume, i));
                     }
                 }
 
@@ -191,7 +191,7 @@ impl<'cx, 'tcx> Visitor<'tcx> for InvalidationGenerator<'cx, 'tcx> {
                 let start = self.location_table.start_index(location);
                 for (i, data) in borrow_set.iter_enumerated() {
                     if borrow_of_local_data(data.borrowed_place) {
-                        self.all_facts.invalidates.push((start, i));
+                        self.all_facts.loan_invalidated_at.push((start, i));
                     }
                 }
             }
@@ -420,7 +420,7 @@ impl<'cx, 'tcx> InvalidationGenerator<'cx, 'tcx> {
 
                         // Unique and mutable borrows are invalidated by reads from any
                         // involved path
-                        this.generate_invalidates(borrow_index, location);
+                        this.emit_loan_invalidated_at(borrow_index, location);
                     }
 
                     (Reservation(_) | Activation(_, _) | Write(_), _) => {
@@ -428,7 +428,7 @@ impl<'cx, 'tcx> InvalidationGenerator<'cx, 'tcx> {
                         // Reservations count as writes since we need to check
                         // that activating the borrow will be OK
                         // FIXME(bob_twinkles) is this actually the right thing to do?
-                        this.generate_invalidates(borrow_index, location);
+                        this.emit_loan_invalidated_at(borrow_index, location);
                     }
                 }
                 Control::Continue
@@ -436,10 +436,10 @@ impl<'cx, 'tcx> InvalidationGenerator<'cx, 'tcx> {
         );
     }
 
-    /// Generates a new `invalidates(L, B)` fact.
+    /// Generates a new `loan_invalidated_at(L, B)` fact.
-    fn generate_invalidates(&mut self, b: BorrowIndex, l: Location) {
+    fn emit_loan_invalidated_at(&mut self, b: BorrowIndex, l: Location) {
         let lidx = self.location_table.start_index(l);
-        self.all_facts.invalidates.push((lidx, b));
+        self.all_facts.loan_invalidated_at.push((lidx, b));
     }
 
     fn check_activations(&mut self, location: Location) {

compiler/rustc_mir/src/borrow_check/nll.rs

@@ -216,14 +216,15 @@ pub(in crate::borrow_check) fn compute_regions<'cx, 'tcx>(
         }
 
         // 2: the universal region relations `outlives` constraints are emitted as
-        //  `known_subset` facts.
+        //  `known_placeholder_subset` facts.
         for (fr1, fr2) in universal_region_relations.known_outlives() {
             if fr1 != fr2 {
                 debug!(
-                    "compute_regions: emitting polonius `known_subset` fr1={:?}, fr2={:?}",
+                    "compute_regions: emitting polonius `known_placeholder_subset` \
+                     fr1={:?}, fr2={:?}",
                     fr1, fr2
                 );
-                all_facts.known_subset.push((*fr1, *fr2));
+                all_facts.known_placeholder_subset.push((*fr1, *fr2));
             }
         }
     }

compiler/rustc_mir/src/borrow_check/type_check/mod.rs

@@ -272,7 +272,7 @@ fn translate_outlives_facts(typeck: &mut TypeChecker<'_, '_>) {
     if let Some(facts) = cx.all_facts {
         let _prof_timer = typeck.infcx.tcx.prof.generic_activity("polonius_fact_generation");
         let location_table = cx.location_table;
-        facts.outlives.extend(cx.constraints.outlives_constraints.outlives().iter().flat_map(
+        facts.subset_base.extend(cx.constraints.outlives_constraints.outlives().iter().flat_map(
             |constraint: &OutlivesConstraint<'_>| {
                 if let Some(from_location) = constraint.locations.from_location() {
                     Either::Left(iter::once((
@@ -2461,7 +2461,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
         let BorrowCheckContext { borrow_set, location_table, all_facts, constraints, .. } =
             self.borrowck_context;
 
-        // In Polonius mode, we also push a `borrow_region` fact
+        // In Polonius mode, we also push a `loan_issued_at` fact
         // linking the loan to the region (in some cases, though,
         // there is no loan associated with this borrow expression --
         // that occurs when we are borrowing an unsafe place, for
@@ -2470,7 +2470,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
             let _prof_timer = self.infcx.tcx.prof.generic_activity("polonius_fact_generation");
             if let Some(borrow_index) = borrow_set.get_index_of(&location) {
                 let region_vid = borrow_region.to_region_vid();
-                all_facts.borrow_region.push((
+                all_facts.loan_issued_at.push((
                     region_vid,
                     borrow_index,
                     location_table.mid_index(location),