Stop using MoveDataParamEnv for places that don't need a param-env

compiler/rustc_borrowck/src/lib.rs

@@ -48,7 +48,6 @@ use rustc_mir_dataflow::impls::{
 use rustc_mir_dataflow::move_paths::{InitIndex, MoveOutIndex, MovePathIndex};
 use rustc_mir_dataflow::move_paths::{InitLocation, LookupResult, MoveData};
 use rustc_mir_dataflow::Analysis;
-use rustc_mir_dataflow::MoveDataParamEnv;
 
 use crate::session_diagnostics::VarNeedNotMut;
 
@@ -196,17 +195,15 @@ fn do_mir_borrowck<'tcx>(
         .iter_enumerated()
         .map(|(idx, body)| (idx, MoveData::gather_moves(body, tcx, param_env, |_| true)));
 
-    let mdpe = MoveDataParamEnv { move_data, param_env };
-
-    let mut flow_inits = MaybeInitializedPlaces::new(tcx, body, &mdpe)
+    let mut flow_inits = MaybeInitializedPlaces::new(tcx, body, &move_data)
         .into_engine(tcx, body)
         .pass_name("borrowck")
         .iterate_to_fixpoint()
         .into_results_cursor(body);
 
     let locals_are_invalidated_at_exit = tcx.hir().body_owner_kind(def).is_fn_or_closure();
     let borrow_set =
-        Rc::new(BorrowSet::build(tcx, body, locals_are_invalidated_at_exit, &mdpe.move_data));
+        Rc::new(BorrowSet::build(tcx, body, locals_are_invalidated_at_exit, &move_data));
 
     // Compute non-lexical lifetimes.
     let nll::NllOutput {
@@ -224,7 +221,7 @@ fn do_mir_borrowck<'tcx>(
         &location_table,
         param_env,
         &mut flow_inits,
-        &mdpe.move_data,
+        &move_data,
         &borrow_set,
         tcx.closure_captures(def),
         consumer_options,
@@ -256,11 +253,11 @@ fn do_mir_borrowck<'tcx>(
         .into_engine(tcx, body)
         .pass_name("borrowck")
         .iterate_to_fixpoint();
-    let flow_uninits = MaybeUninitializedPlaces::new(tcx, body, &mdpe)
+    let flow_uninits = MaybeUninitializedPlaces::new(tcx, body, &move_data)
         .into_engine(tcx, body)
         .pass_name("borrowck")
         .iterate_to_fixpoint();
-    let flow_ever_inits = EverInitializedPlaces::new(body, &mdpe)
+    let flow_ever_inits = EverInitializedPlaces::new(body, &move_data)
         .into_engine(tcx, body)
         .pass_name("borrowck")
         .iterate_to_fixpoint();
@@ -326,7 +323,7 @@ fn do_mir_borrowck<'tcx>(
         infcx: &infcx,
         param_env,
         body,
-        move_data: &mdpe.move_data,
+        move_data: &move_data,
         location_table: &location_table,
         movable_coroutine,
         locals_are_invalidated_at_exit,

compiler/rustc_mir_dataflow/src/drop_flag_effects.rs

@@ -4,7 +4,6 @@ use rustc_target::abi::VariantIdx;
 use tracing::debug;
 
 use super::move_paths::{InitKind, LookupResult, MoveData, MovePathIndex};
-use super::MoveDataParamEnv;
 
 pub fn move_path_children_matching<'tcx, F>(
     move_data: &MoveData<'tcx>,
@@ -70,12 +69,11 @@ pub fn on_all_children_bits<'tcx, F>(
 
 pub fn drop_flag_effects_for_function_entry<'tcx, F>(
     body: &Body<'tcx>,
-    ctxt: &MoveDataParamEnv<'tcx>,
+    move_data: &MoveData<'tcx>,
     mut callback: F,
 ) where
     F: FnMut(MovePathIndex, DropFlagState),
 {
-    let move_data = &ctxt.move_data;
     for arg in body.args_iter() {
         let place = mir::Place::from(arg);
         let lookup_result = move_data.rev_lookup.find(place.as_ref());
@@ -87,13 +85,12 @@ pub fn drop_flag_effects_for_function_entry<'tcx, F>(
 
 pub fn drop_flag_effects_for_location<'tcx, F>(
     body: &Body<'tcx>,
-    ctxt: &MoveDataParamEnv<'tcx>,
+    move_data: &MoveData<'tcx>,
     loc: Location,
     mut callback: F,
 ) where
     F: FnMut(MovePathIndex, DropFlagState),
 {
-    let move_data = &ctxt.move_data;
     debug!("drop_flag_effects_for_location({:?})", loc);
 
     // first, move out of the RHS

compiler/rustc_mir_dataflow/src/impls/initialized.rs

@@ -11,7 +11,6 @@ use crate::elaborate_drops::DropFlagState;
 use crate::framework::SwitchIntEdgeEffects;
 use crate::move_paths::{HasMoveData, InitIndex, InitKind, LookupResult, MoveData, MovePathIndex};
 use crate::on_lookup_result_bits;
-use crate::MoveDataParamEnv;
 use crate::{drop_flag_effects, on_all_children_bits};
 use crate::{lattice, AnalysisDomain, GenKill, GenKillAnalysis, MaybeReachable};
 
@@ -53,17 +52,13 @@ use crate::{lattice, AnalysisDomain, GenKill, GenKillAnalysis, MaybeReachable};
 pub struct MaybeInitializedPlaces<'a, 'mir, 'tcx> {
     tcx: TyCtxt<'tcx>,
     body: &'mir Body<'tcx>,
-    mdpe: &'a MoveDataParamEnv<'tcx>,
+    move_data: &'a MoveData<'tcx>,
     skip_unreachable_unwind: bool,
 }
 
 impl<'a, 'mir, 'tcx> MaybeInitializedPlaces<'a, 'mir, 'tcx> {
-    pub fn new(
-        tcx: TyCtxt<'tcx>,
-        body: &'mir Body<'tcx>,
-        mdpe: &'a MoveDataParamEnv<'tcx>,
-    ) -> Self {
-        MaybeInitializedPlaces { tcx, body, mdpe, skip_unreachable_unwind: false }
+    pub fn new(tcx: TyCtxt<'tcx>, body: &'mir Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
+        MaybeInitializedPlaces { tcx, body, move_data, skip_unreachable_unwind: false }
     }
 
     pub fn skipping_unreachable_unwind(mut self) -> Self {
@@ -90,7 +85,7 @@ impl<'a, 'mir, 'tcx> MaybeInitializedPlaces<'a, 'mir, 'tcx> {
 
 impl<'a, 'mir, 'tcx> HasMoveData<'tcx> for MaybeInitializedPlaces<'a, 'mir, 'tcx> {
     fn move_data(&self) -> &MoveData<'tcx> {
-        &self.mdpe.move_data
+        self.move_data
     }
 }
 
@@ -132,22 +127,18 @@ impl<'a, 'mir, 'tcx> HasMoveData<'tcx> for MaybeInitializedPlaces<'a, 'mir, 'tcx
 pub struct MaybeUninitializedPlaces<'a, 'mir, 'tcx> {
     tcx: TyCtxt<'tcx>,
     body: &'mir Body<'tcx>,
-    mdpe: &'a MoveDataParamEnv<'tcx>,
+    move_data: &'a MoveData<'tcx>,
 
     mark_inactive_variants_as_uninit: bool,
     skip_unreachable_unwind: BitSet<mir::BasicBlock>,
 }
 
 impl<'a, 'mir, 'tcx> MaybeUninitializedPlaces<'a, 'mir, 'tcx> {
-    pub fn new(
-        tcx: TyCtxt<'tcx>,
-        body: &'mir Body<'tcx>,
-        mdpe: &'a MoveDataParamEnv<'tcx>,
-    ) -> Self {
+    pub fn new(tcx: TyCtxt<'tcx>, body: &'mir Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
         MaybeUninitializedPlaces {
             tcx,
             body,
-            mdpe,
+            move_data,
             mark_inactive_variants_as_uninit: false,
             skip_unreachable_unwind: BitSet::new_empty(body.basic_blocks.len()),
         }
@@ -174,7 +165,7 @@ impl<'a, 'mir, 'tcx> MaybeUninitializedPlaces<'a, 'mir, 'tcx> {
 
 impl<'a, 'tcx> HasMoveData<'tcx> for MaybeUninitializedPlaces<'a, '_, 'tcx> {
     fn move_data(&self) -> &MoveData<'tcx> {
-        &self.mdpe.move_data
+        self.move_data
     }
 }
 
@@ -214,18 +205,18 @@ impl<'a, 'tcx> HasMoveData<'tcx> for MaybeUninitializedPlaces<'a, '_, 'tcx> {
 /// that would require a dynamic drop-flag at that statement.
 pub struct DefinitelyInitializedPlaces<'a, 'tcx> {
     body: &'a Body<'tcx>,
-    mdpe: &'a MoveDataParamEnv<'tcx>,
+    move_data: &'a MoveData<'tcx>,
 }
 
 impl<'a, 'tcx> DefinitelyInitializedPlaces<'a, 'tcx> {
-    pub fn new(body: &'a Body<'tcx>, mdpe: &'a MoveDataParamEnv<'tcx>) -> Self {
-        DefinitelyInitializedPlaces { body, mdpe }
+    pub fn new(body: &'a Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
+        DefinitelyInitializedPlaces { body, move_data }
     }
 }
 
 impl<'a, 'tcx> HasMoveData<'tcx> for DefinitelyInitializedPlaces<'a, 'tcx> {
     fn move_data(&self) -> &MoveData<'tcx> {
-        &self.mdpe.move_data
+        self.move_data
     }
 }
 
@@ -260,18 +251,18 @@ impl<'a, 'tcx> HasMoveData<'tcx> for DefinitelyInitializedPlaces<'a, 'tcx> {
 /// ```
 pub struct EverInitializedPlaces<'a, 'mir, 'tcx> {
     body: &'mir Body<'tcx>,
-    mdpe: &'a MoveDataParamEnv<'tcx>,
+    move_data: &'a MoveData<'tcx>,
 }
 
 impl<'a, 'mir, 'tcx> EverInitializedPlaces<'a, 'mir, 'tcx> {
-    pub fn new(body: &'mir Body<'tcx>, mdpe: &'a MoveDataParamEnv<'tcx>) -> Self {
-        EverInitializedPlaces { body, mdpe }
+    pub fn new(body: &'mir Body<'tcx>, move_data: &'a MoveData<'tcx>) -> Self {
+        EverInitializedPlaces { body, move_data }
     }
 }
 
 impl<'a, 'tcx> HasMoveData<'tcx> for EverInitializedPlaces<'a, '_, 'tcx> {
     fn move_data(&self) -> &MoveData<'tcx> {
-        &self.mdpe.move_data
+        self.move_data
     }
 }
 
@@ -329,7 +320,7 @@ impl<'tcx> AnalysisDomain<'tcx> for MaybeInitializedPlaces<'_, '_, 'tcx> {
     fn initialize_start_block(&self, _: &mir::Body<'tcx>, state: &mut Self::Domain) {
         *state =
             MaybeReachable::Reachable(ChunkedBitSet::new_empty(self.move_data().move_paths.len()));
-        drop_flag_effects_for_function_entry(self.body, self.mdpe, |path, s| {
+        drop_flag_effects_for_function_entry(self.body, self.move_data, |path, s| {
             assert!(s == DropFlagState::Present);
             state.gen_(path);
         });
@@ -349,7 +340,7 @@ impl<'tcx> GenKillAnalysis<'tcx> for MaybeInitializedPlaces<'_, '_, 'tcx> {
         statement: &mir::Statement<'tcx>,
         location: Location,
     ) {
-        drop_flag_effects_for_location(self.body, self.mdpe, location, |path, s| {
+        drop_flag_effects_for_location(self.body, self.move_data, location, |path, s| {
             Self::update_bits(trans, path, s)
         });
 
@@ -381,7 +372,7 @@ impl<'tcx> GenKillAnalysis<'tcx> for MaybeInitializedPlaces<'_, '_, 'tcx> {
         {
             edges = TerminatorEdges::Single(target);
         }
-        drop_flag_effects_for_location(self.body, self.mdpe, location, |path, s| {
+        drop_flag_effects_for_location(self.body, self.move_data, location, |path, s| {
             Self::update_bits(state, path, s)
         });
         edges
@@ -466,7 +457,7 @@ impl<'tcx> AnalysisDomain<'tcx> for MaybeUninitializedPlaces<'_, '_, 'tcx> {
         // set all bits to 1 (uninit) before gathering counter-evidence
         state.insert_all();
 
-        drop_flag_effects_for_function_entry(self.body, self.mdpe, |path, s| {
+        drop_flag_effects_for_function_entry(self.body, self.move_data, |path, s| {
             assert!(s == DropFlagState::Present);
             state.remove(path);
         });
@@ -486,7 +477,7 @@ impl<'tcx> GenKillAnalysis<'tcx> for MaybeUninitializedPlaces<'_, '_, 'tcx> {
         _statement: &mir::Statement<'tcx>,
         location: Location,
     ) {
-        drop_flag_effects_for_location(self.body, self.mdpe, location, |path, s| {
+        drop_flag_effects_for_location(self.body, self.move_data, location, |path, s| {
             Self::update_bits(trans, path, s)
         });
 
@@ -500,7 +491,7 @@ impl<'tcx> GenKillAnalysis<'tcx> for MaybeUninitializedPlaces<'_, '_, 'tcx> {
         terminator: &'mir mir::Terminator<'tcx>,
         location: Location,
     ) -> TerminatorEdges<'mir, 'tcx> {
-        drop_flag_effects_for_location(self.body, self.mdpe, location, |path, s| {
+        drop_flag_effects_for_location(self.body, self.move_data, location, |path, s| {
             Self::update_bits(trans, path, s)
         });
         if self.skip_unreachable_unwind.contains(location.block) {
@@ -593,7 +584,7 @@ impl<'a, 'tcx> AnalysisDomain<'tcx> for DefinitelyInitializedPlaces<'a, 'tcx> {
     fn initialize_start_block(&self, _: &mir::Body<'tcx>, state: &mut Self::Domain) {
         state.0.clear();
 
-        drop_flag_effects_for_function_entry(self.body, self.mdpe, |path, s| {
+        drop_flag_effects_for_function_entry(self.body, self.move_data, |path, s| {
             assert!(s == DropFlagState::Present);
             state.0.insert(path);
         });
@@ -613,7 +604,7 @@ impl<'tcx> GenKillAnalysis<'tcx> for DefinitelyInitializedPlaces<'_, 'tcx> {
         _statement: &mir::Statement<'tcx>,
         location: Location,
     ) {
-        drop_flag_effects_for_location(self.body, self.mdpe, location, |path, s| {
+        drop_flag_effects_for_location(self.body, self.move_data, location, |path, s| {
             Self::update_bits(trans, path, s)
         })
     }
@@ -624,7 +615,7 @@ impl<'tcx> GenKillAnalysis<'tcx> for DefinitelyInitializedPlaces<'_, 'tcx> {
         terminator: &'mir mir::Terminator<'tcx>,
         location: Location,
     ) -> TerminatorEdges<'mir, 'tcx> {
-        drop_flag_effects_for_location(self.body, self.mdpe, location, |path, s| {
+        drop_flag_effects_for_location(self.body, self.move_data, location, |path, s| {
             Self::update_bits(trans, path, s)
         });
         terminator.edges()

compiler/rustc_mir_dataflow/src/rustc_peek.rs

@@ -8,7 +8,6 @@ use crate::impls::{
 };
 use crate::move_paths::{HasMoveData, MoveData};
 use crate::move_paths::{LookupResult, MovePathIndex};
-use crate::MoveDataParamEnv;
 use crate::{Analysis, JoinSemiLattice, ResultsCursor};
 use rustc_ast::MetaItem;
 use rustc_hir::def_id::DefId;
@@ -48,26 +47,25 @@ impl<'tcx> MirPass<'tcx> for SanityCheck {
 
         let param_env = tcx.param_env(def_id);
         let move_data = MoveData::gather_moves(body, tcx, param_env, |_| true);
-        let mdpe = MoveDataParamEnv { move_data, param_env };
 
         if has_rustc_mir_with(tcx, def_id, sym::rustc_peek_maybe_init).is_some() {
-            let flow_inits = MaybeInitializedPlaces::new(tcx, body, &mdpe)
+            let flow_inits = MaybeInitializedPlaces::new(tcx, body, &move_data)
                 .into_engine(tcx, body)
                 .iterate_to_fixpoint();
 
             sanity_check_via_rustc_peek(tcx, flow_inits.into_results_cursor(body));
         }
 
         if has_rustc_mir_with(tcx, def_id, sym::rustc_peek_maybe_uninit).is_some() {
-            let flow_uninits = MaybeUninitializedPlaces::new(tcx, body, &mdpe)
+            let flow_uninits = MaybeUninitializedPlaces::new(tcx, body, &move_data)
                 .into_engine(tcx, body)
                 .iterate_to_fixpoint();
 
             sanity_check_via_rustc_peek(tcx, flow_uninits.into_results_cursor(body));
         }
 
         if has_rustc_mir_with(tcx, def_id, sym::rustc_peek_definite_init).is_some() {
-            let flow_def_inits = DefinitelyInitializedPlaces::new(body, &mdpe)
+            let flow_def_inits = DefinitelyInitializedPlaces::new(body, &move_data)
                 .into_engine(tcx, body)
                 .iterate_to_fixpoint();
 

compiler/rustc_mir_transform/src/elaborate_drops.rs

@@ -60,15 +60,15 @@ impl<'tcx> MirPass<'tcx> for ElaborateDrops {
         let elaborate_patch = {
             let env = MoveDataParamEnv { move_data, param_env };
 
-            let mut inits = MaybeInitializedPlaces::new(tcx, body, &env)
+            let mut inits = MaybeInitializedPlaces::new(tcx, body, &env.move_data)
                 .skipping_unreachable_unwind()
                 .into_engine(tcx, body)
                 .pass_name("elaborate_drops")
                 .iterate_to_fixpoint()
                 .into_results_cursor(body);
             let dead_unwinds = compute_dead_unwinds(body, &mut inits);
 
-            let uninits = MaybeUninitializedPlaces::new(tcx, body, &env)
+            let uninits = MaybeUninitializedPlaces::new(tcx, body, &env.move_data)
                 .mark_inactive_variants_as_uninit()
                 .skipping_unreachable_unwind(dead_unwinds)
                 .into_engine(tcx, body)
@@ -441,9 +441,13 @@ impl<'b, 'mir, 'tcx> ElaborateDropsCtxt<'b, 'mir, 'tcx> {
 
     fn drop_flags_for_args(&mut self) {
         let loc = Location::START;
-        rustc_mir_dataflow::drop_flag_effects_for_function_entry(self.body, self.env, |path, ds| {
-            self.set_drop_flag(loc, path, ds);
-        })
+        rustc_mir_dataflow::drop_flag_effects_for_function_entry(
+            self.body,
+            &self.env.move_data,
+            |path, ds| {
+                self.set_drop_flag(loc, path, ds);
+            },
+        )
     }
 
     fn drop_flags_for_locs(&mut self) {
@@ -476,7 +480,7 @@ impl<'b, 'mir, 'tcx> ElaborateDropsCtxt<'b, 'mir, 'tcx> {
                 let loc = Location { block: bb, statement_index: i };
                 rustc_mir_dataflow::drop_flag_effects_for_location(
                     self.body,
-                    self.env,
+                    &self.env.move_data,
                     loc,
                     |path, ds| self.set_drop_flag(loc, path, ds),
                 )