Rollup merge of rust-lang#99022 - pierwill:always-storage-live-locals, r=pierwill

MIR dataflow: Rename function to `always_storage_live_locals`

Related to rust-lang#99021.

r?  ```@JakobDegen``` (as discussed on Zulip)

Author: matthiaskrgr

compiler/rustc_const_eval/src/interpret/eval_context.rs

@@ -15,7 +15,7 @@ use rustc_middle::ty::layout::{
 use rustc_middle::ty::{
     self, query::TyCtxtAt, subst::SubstsRef, ParamEnv, Ty, TyCtxt, TypeFoldable,
 };
-use rustc_mir_dataflow::storage::always_live_locals;
+use rustc_mir_dataflow::storage::always_storage_live_locals;
 use rustc_query_system::ich::StableHashingContext;
 use rustc_session::Limit;
 use rustc_span::{Pos, Span};
@@ -707,7 +707,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
         let mut locals = IndexVec::from_elem(dummy, &body.local_decls);
 
         // Now mark those locals as live that have no `Storage*` annotations.
-        let always_live = always_live_locals(self.body());
+        let always_live = always_storage_live_locals(self.body());
         for local in locals.indices() {
             if always_live.contains(local) {
                 locals[local].value = LocalValue::Live(Operand::Immediate(Immediate::Uninit));

compiler/rustc_const_eval/src/transform/validate.rs

@@ -15,7 +15,7 @@ use rustc_middle::ty::fold::BottomUpFolder;
 use rustc_middle::ty::subst::Subst;
 use rustc_middle::ty::{self, InstanceDef, ParamEnv, Ty, TyCtxt, TypeFoldable, TypeVisitable};
 use rustc_mir_dataflow::impls::MaybeStorageLive;
-use rustc_mir_dataflow::storage::always_live_locals;
+use rustc_mir_dataflow::storage::always_storage_live_locals;
 use rustc_mir_dataflow::{Analysis, ResultsCursor};
 use rustc_target::abi::{Size, VariantIdx};
 
@@ -49,7 +49,7 @@ impl<'tcx> MirPass<'tcx> for Validator {
         let param_env = tcx.param_env(def_id);
         let mir_phase = self.mir_phase;
 
-        let always_live_locals = always_live_locals(body);
+        let always_live_locals = always_storage_live_locals(body);
         let storage_liveness = MaybeStorageLive::new(always_live_locals)
             .into_engine(tcx, body)
             .iterate_to_fixpoint()

compiler/rustc_mir_dataflow/src/storage.rs

@@ -7,7 +7,7 @@ use rustc_middle::mir::{self, Local};
 //
 // FIXME: Currently, we need to traverse the entire MIR to compute this. We should instead store it
 // as a field in the `LocalDecl` for each `Local`.
-pub fn always_live_locals(body: &mir::Body<'_>) -> BitSet<Local> {
+pub fn always_storage_live_locals(body: &mir::Body<'_>) -> BitSet<Local> {
     let mut always_live_locals = BitSet::new_filled(body.local_decls.len());
 
     for block in body.basic_blocks() {

compiler/rustc_mir_transform/src/generator.rs

@@ -67,7 +67,7 @@ use rustc_middle::ty::{self, AdtDef, Ty, TyCtxt};
 use rustc_mir_dataflow::impls::{
     MaybeBorrowedLocals, MaybeLiveLocals, MaybeRequiresStorage, MaybeStorageLive,
 };
-use rustc_mir_dataflow::storage;
+use rustc_mir_dataflow::storage::always_storage_live_locals;
 use rustc_mir_dataflow::{self, Analysis};
 use rustc_target::abi::VariantIdx;
 use rustc_target::spec::PanicStrategy;
@@ -1379,7 +1379,7 @@ impl<'tcx> MirPass<'tcx> for StateTransform {
             },
         );
 
-        let always_live_locals = storage::always_live_locals(&body);
+        let always_live_locals = always_storage_live_locals(&body);
 
         let liveness_info =
             locals_live_across_suspend_points(tcx, body, &always_live_locals, movable);