diff options
Diffstat (limited to 'compiler/rustc_mir_build/src')
| -rw-r--r-- | compiler/rustc_mir_build/src/build/expr/as_place.rs | 86 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/build/expr/as_rvalue.rs | 56 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/build/expr/into.rs | 20 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/build/matches/mod.rs | 14 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/build/matches/util.rs | 4 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/build/mod.rs | 7 | ||||
| -rw-r--r-- | compiler/rustc_mir_build/src/build/scope.rs | 11 |
7 files changed, 108 insertions, 90 deletions
diff --git a/compiler/rustc_mir_build/src/build/expr/as_place.rs b/compiler/rustc_mir_build/src/build/expr/as_place.rs index 2503360b1e4..3308a243a3a 100644 --- a/compiler/rustc_mir_build/src/build/expr/as_place.rs +++ b/compiler/rustc_mir_build/src/build/expr/as_place.rs @@ -6,8 +6,8 @@ use crate::build::{BlockAnd, BlockAndExtension, Builder}; use crate::thir::*; use rustc_hir::def_id::DefId; use rustc_hir::HirId; -use rustc_middle::middle::region; use rustc_middle::hir::place::ProjectionKind as HirProjectionKind; +use rustc_middle::middle::region; use rustc_middle::mir::AssertKind::BoundsCheck; use rustc_middle::mir::*; use rustc_middle::ty::{self, CanonicalUserTypeAnnotation, Ty, TyCtxt, Variance}; @@ -57,7 +57,8 @@ crate enum PlaceBase { /// DefId of the closure closure_def_id: DefId, /// The trait closure implements, `Fn`, `FnMut`, `FnOnce` - closure_kind: ty::ClosureKind }, + closure_kind: ty::ClosureKind, + }, } /// `PlaceBuilder` is used to create places during MIR construction. It allows you to "build up" a @@ -81,8 +82,7 @@ crate struct PlaceBuilder<'tcx> { fn convert_to_hir_projections_and_truncate_for_capture<'tcx>( mir_projections: &[PlaceElem<'tcx>], ) -> Vec<HirProjectionKind> { - - let mut hir_projections = Vec::new(); + let mut hir_projections = Vec::new(); for mir_projection in mir_projections { let hir_projection = match mir_projection { @@ -91,20 +91,20 @@ fn convert_to_hir_projections_and_truncate_for_capture<'tcx>( // We will never encouter this for multivariant enums, // read the comment for `Downcast`. HirProjectionKind::Field(field.index() as u32, VariantIdx::new(0)) - }, + } ProjectionElem::Downcast(..) => { // This projections exist only for enums that have // multiple variants. Since such enums that are captured // completely, we can stop here. - break - }, + break; + } ProjectionElem::Index(..) | ProjectionElem::ConstantIndex { .. } | ProjectionElem::Subslice { .. } => { // We don't capture array-access projections. // We can stop here as arrays are captured completely. - break - }, + break; + } }; hir_projections.push(hir_projection); @@ -181,9 +181,9 @@ fn find_capture_matching_projections<'a, 'tcx>( // If an ancestor is found, `idx` is the index within the list of captured places // for root variable `var_hir_id` and `capture` is the `ty::CapturedPlace` itself. let (idx, capture) = root_variable_min_captures.iter().enumerate().find(|(_, capture)| { - let possible_ancestor_proj_kinds = - capture.place.projections.iter().map(|proj| proj.kind).collect(); - is_ancestor_or_same_capture(&possible_ancestor_proj_kinds, &hir_projections) + let possible_ancestor_proj_kinds = + capture.place.projections.iter().map(|proj| proj.kind).collect(); + is_ancestor_or_same_capture(&possible_ancestor_proj_kinds, &hir_projections) })?; // Convert index to be from the presepective of the entire closure_min_captures map @@ -213,35 +213,34 @@ fn to_upvars_resolved_place_builder<'a, 'tcx>( ty::ClosureKind::FnOnce => {} } - let (capture_index, capture) = - if let Some(capture_details) = find_capture_matching_projections( + let (capture_index, capture) = if let Some(capture_details) = + find_capture_matching_projections( typeck_results, var_hir_id, closure_def_id, &from_builder.projection, ) { - capture_details - } else { - if !tcx.features().capture_disjoint_fields { - bug!( - "No associated capture found for {:?}[{:#?}] even though \ + capture_details + } else { + if !tcx.features().capture_disjoint_fields { + bug!( + "No associated capture found for {:?}[{:#?}] even though \ capture_disjoint_fields isn't enabled", - var_hir_id, - from_builder.projection - ) - } else { - // FIXME(project-rfc-2229#24): Handle this case properly - debug!( - "No associated capture found for {:?}[{:#?}]", - var_hir_id, - from_builder.projection, - ); - } - return Err(var_hir_id); - }; + var_hir_id, + from_builder.projection + ) + } else { + // FIXME(project-rfc-2229#24): Handle this case properly + debug!( + "No associated capture found for {:?}[{:#?}]", + var_hir_id, from_builder.projection, + ); + } + return Err(var_hir_id); + }; - let closure_ty = - typeck_results.node_type(tcx.hir().local_def_id_to_hir_id(closure_def_id.expect_local())); + let closure_ty = typeck_results + .node_type(tcx.hir().local_def_id_to_hir_id(closure_def_id.expect_local())); let substs = match closure_ty.kind() { ty::Closure(_, substs) => ty::UpvarSubsts::Closure(substs), @@ -256,7 +255,8 @@ fn to_upvars_resolved_place_builder<'a, 'tcx>( // we know that the capture exists and is the `capture_index`-th capture. let var_ty = substs.tupled_upvars_ty().tuple_element_ty(capture_index).unwrap(); - upvar_resolved_place_builder = upvar_resolved_place_builder.field(Field::new(capture_index), var_ty); + upvar_resolved_place_builder = + upvar_resolved_place_builder.field(Field::new(capture_index), var_ty); // If the variable is captured via ByRef(Immutable/Mutable) Borrow, // we need to deref it @@ -270,8 +270,9 @@ fn to_upvars_resolved_place_builder<'a, 'tcx>( // We used some of the projections to build the capture itself, // now we apply the remaining to the upvar resolved place. - upvar_resolved_place_builder.projection.extend( - curr_projections.drain(next_projection..)); + upvar_resolved_place_builder + .projection + .extend(curr_projections.drain(next_projection..)); Ok(upvar_resolved_place_builder) } @@ -356,7 +357,11 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { /// This is used when constructing a compound `Place`, so that we can avoid creating /// intermediate `Place` values until we know the full set of projections. - crate fn as_place_builder<M>(&mut self, block: BasicBlock, expr: M) -> BlockAnd<PlaceBuilder<'tcx>> + crate fn as_place_builder<M>( + &mut self, + block: BasicBlock, + expr: M, + ) -> BlockAnd<PlaceBuilder<'tcx>> where M: Mirror<'tcx, Output = Expr<'tcx>>, { @@ -627,7 +632,8 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { if is_outermost_index { self.read_fake_borrows(block, fake_borrow_temps, source_info) } else { - base_place = base_place.expect_upvars_resolved(self.hir.tcx(), self.hir.typeck_results()); + base_place = + base_place.expect_upvars_resolved(self.hir.tcx(), self.hir.typeck_results()); self.add_fake_borrows_of_base( &base_place, block, @@ -679,7 +685,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { let tcx = self.hir.tcx(); let local = match base_place.base { PlaceBase::Local(local) => local, - PlaceBase::Upvar { .. } => bug!("Expected PlacseBase::Local found Upvar") + PlaceBase::Upvar { .. } => bug!("Expected PlacseBase::Local found Upvar"), }; let place_ty = Place::ty_from(local, &base_place.projection, &self.local_decls, tcx); diff --git a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs index 55bdbcfc5b9..c95fc969797 100644 --- a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs +++ b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs @@ -2,9 +2,9 @@ use rustc_index::vec::Idx; +use crate::build::expr::as_place::PlaceBase; use crate::build::expr::category::{Category, RvalueFunc}; use crate::build::{BlockAnd, BlockAndExtension, Builder}; -use crate::build::expr::as_place::PlaceBase; use crate::thir::*; use rustc_middle::middle::region; use rustc_middle::mir::AssertKind; @@ -274,7 +274,10 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { | ExprKind::ValueTypeAscription { .. } => { // these do not have corresponding `Rvalue` variants, // so make an operand and then return that - debug_assert!(!matches!(Category::of(&expr.kind), Some(Category::Rvalue(RvalueFunc::AsRvalue)))); + debug_assert!(!matches!( + Category::of(&expr.kind), + Some(Category::Rvalue(RvalueFunc::AsRvalue)) + )); let operand = unpack!(block = this.as_operand(block, scope, expr)); block.and(Rvalue::Use(operand)) } @@ -401,34 +404,39 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { // We are capturing a path that starts off a local variable in the parent. // The mutability of the current capture is same as the mutability // of the local declaration in the parent. - PlaceBase::Local(local) => this.local_decls[local].mutability, + PlaceBase::Local(local) => this.local_decls[local].mutability, // Parent is a closure and we are capturing a path that is captured // by the parent itself. The mutability of the current capture // is same as that of the capture in the parent closure. PlaceBase::Upvar { .. } => { - let enclosing_upvars_resolved = arg_place_builder.clone().into_place( - this.hir.tcx(), - this.hir.typeck_results()); + let enclosing_upvars_resolved = + arg_place_builder.clone().into_place(this.hir.tcx(), this.hir.typeck_results()); match enclosing_upvars_resolved.as_ref() { - PlaceRef { local, projection: &[ProjectionElem::Field(upvar_index, _), ..] } + PlaceRef { + local, + projection: &[ProjectionElem::Field(upvar_index, _), ..], + } | PlaceRef { local, - projection: &[ProjectionElem::Deref, ProjectionElem::Field(upvar_index, _), ..] } => { - // Not in a closure - debug_assert!( - local == Local::new(1), - "Expected local to be Local(1), found {:?}", - local - ); - // Not in a closure - debug_assert!( - this.upvar_mutbls.len() > upvar_index.index(), - "Unexpected capture place, upvar_mutbls={:#?}, upvar_index={:?}", - this.upvar_mutbls, upvar_index - ); - this.upvar_mutbls[upvar_index.index()] - } + projection: + &[ProjectionElem::Deref, ProjectionElem::Field(upvar_index, _), ..], + } => { + // Not in a closure + debug_assert!( + local == Local::new(1), + "Expected local to be Local(1), found {:?}", + local + ); + // Not in a closure + debug_assert!( + this.upvar_mutbls.len() > upvar_index.index(), + "Unexpected capture place, upvar_mutbls={:#?}, upvar_index={:?}", + this.upvar_mutbls, + upvar_index + ); + this.upvar_mutbls[upvar_index.index()] + } _ => bug!("Unexpected capture place"), } } @@ -439,9 +447,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { Mutability::Mut => BorrowKind::Mut { allow_two_phase_borrow: false }, }; - let arg_place = arg_place_builder.into_place( - this.hir.tcx(), - this.hir.typeck_results()); + let arg_place = arg_place_builder.into_place(this.hir.tcx(), this.hir.typeck_results()); this.cfg.push_assign( block, diff --git a/compiler/rustc_mir_build/src/build/expr/into.rs b/compiler/rustc_mir_build/src/build/expr/into.rs index 32c01f2c733..18ebf334404 100644 --- a/compiler/rustc_mir_build/src/build/expr/into.rs +++ b/compiler/rustc_mir_build/src/build/expr/into.rs @@ -10,7 +10,7 @@ use rustc_data_structures::stack::ensure_sufficient_stack; use rustc_hir as hir; use rustc_middle::middle::region; use rustc_middle::mir::*; -use rustc_middle::ty::{CanonicalUserTypeAnnotation}; +use rustc_middle::ty::CanonicalUserTypeAnnotation; use std::slice; @@ -38,7 +38,8 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { let expr_span = expr.span; let source_info = this.source_info(expr_span); - let expr_is_block_or_scope = matches!(expr.kind, ExprKind::Block { .. } | ExprKind::Scope { .. }); + let expr_is_block_or_scope = + matches!(expr.kind, ExprKind::Block { .. } | ExprKind::Scope { .. }); let schedule_drop = move |this: &mut Self| { if let Some(drop_scope) = scope { @@ -68,7 +69,9 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { this.match_expr(destination, scope, expr_span, block, scrutinee, arms) } ExprKind::If { cond, then, else_opt } => { - let place = unpack!(block = this.as_temp(block, Some(this.local_scope()), cond, Mutability::Mut)); + let place = unpack!( + block = this.as_temp(block, Some(this.local_scope()), cond, Mutability::Mut) + ); let operand = Operand::Move(Place::from(place)); let mut then_block = this.cfg.start_new_block(); @@ -100,14 +103,17 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { ); join_block.unit() - }, + } ExprKind::NeverToAny { source } => { let source = this.hir.mirror(source); - let is_call = matches!(source.kind, ExprKind::Call { .. } | ExprKind::InlineAsm { .. }); + let is_call = + matches!(source.kind, ExprKind::Call { .. } | ExprKind::InlineAsm { .. }); // (#66975) Source could be a const of type `!`, so has to // exist in the generated MIR. - unpack!(block = this.as_temp(block, Some(this.local_scope()), source, Mutability::Mut,)); + unpack!( + block = this.as_temp(block, Some(this.local_scope()), source, Mutability::Mut,) + ); // This is an optimization. If the expression was a call then we already have an // unreachable block. Don't bother to terminate it and create a new one. @@ -313,7 +319,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { .field(n, ty) .into_place(this.hir.tcx(), this.hir.typeck_results()), ) - }, + } }) .collect() } else { diff --git a/compiler/rustc_mir_build/src/build/matches/mod.rs b/compiler/rustc_mir_build/src/build/matches/mod.rs index 90fcee075b5..205ba0d2579 100644 --- a/compiler/rustc_mir_build/src/build/matches/mod.rs +++ b/compiler/rustc_mir_build/src/build/matches/mod.rs @@ -1692,15 +1692,21 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { let e = self.hir.mirror(e.clone()); let source_info = self.source_info(e.span); (e.span, self.test_bool(block, e, source_info)) - }, + } Guard::IfLet(pat, scrutinee) => { let scrutinee_span = scrutinee.span(); - let scrutinee_place = unpack!(block = self.lower_scrutinee(block, scrutinee.clone(), scrutinee_span)); + let scrutinee_place = unpack!( + block = self.lower_scrutinee(block, scrutinee.clone(), scrutinee_span) + ); let mut guard_candidate = Candidate::new(scrutinee_place, &pat, false); let wildcard = Pat::wildcard_from_ty(pat.ty); let mut otherwise_candidate = Candidate::new(scrutinee_place, &wildcard, false); - let fake_borrow_temps = - self.lower_match_tree(block, pat.span, false, &mut [&mut guard_candidate, &mut otherwise_candidate]); + let fake_borrow_temps = self.lower_match_tree( + block, + pat.span, + false, + &mut [&mut guard_candidate, &mut otherwise_candidate], + ); self.declare_bindings( None, pat.span.to(arm_span.unwrap()), diff --git a/compiler/rustc_mir_build/src/build/matches/util.rs b/compiler/rustc_mir_build/src/build/matches/util.rs index 4ef88c25cad..db1f678a5c6 100644 --- a/compiler/rustc_mir_build/src/build/matches/util.rs +++ b/compiler/rustc_mir_build/src/build/matches/util.rs @@ -32,9 +32,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { ) { let tcx = self.hir.tcx(); let (min_length, exact_size) = match place.ty(&self.local_decls, tcx).ty.kind() { - ty::Array(_, length) => { - (length.eval_usize(tcx, self.hir.param_env), true) - } + ty::Array(_, length) => (length.eval_usize(tcx, self.hir.param_env), true), _ => ((prefix.len() + suffix.len()).try_into().unwrap(), false), }; diff --git a/compiler/rustc_mir_build/src/build/mod.rs b/compiler/rustc_mir_build/src/build/mod.rs index e4891eb5a3c..8c1f73f4235 100644 --- a/compiler/rustc_mir_build/src/build/mod.rs +++ b/compiler/rustc_mir_build/src/build/mod.rs @@ -838,9 +838,8 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { _ => span_bug!(self.fn_span, "upvars with non-closure env ty {:?}", closure_ty), }; let capture_tys = upvar_substs.upvar_tys(); - let captures_with_tys = hir_typeck_results - .closure_min_captures_flattened(fn_def_id) - .zip(capture_tys); + let captures_with_tys = + hir_typeck_results.closure_min_captures_flattened(fn_def_id).zip(capture_tys); self.upvar_mutbls = captures_with_tys .enumerate() @@ -848,7 +847,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { let capture = captured_place.info.capture_kind; let var_id = match captured_place.place.base { HirPlaceBase::Upvar(upvar_id) => upvar_id.var_path.hir_id, - _ => bug!("Expected an upvar") + _ => bug!("Expected an upvar"), }; let mutability = captured_place.mutability; diff --git a/compiler/rustc_mir_build/src/build/scope.rs b/compiler/rustc_mir_build/src/build/scope.rs index 62d2212d109..cbc20c6153a 100644 --- a/compiler/rustc_mir_build/src/build/scope.rs +++ b/compiler/rustc_mir_build/src/build/scope.rs @@ -931,10 +931,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { let local_scope = self.local_scope(); let scope = self.scopes.scopes.last_mut().unwrap(); - assert_eq!( - scope.region_scope, local_scope, - "local scope is not the topmost scope!", - ); + assert_eq!(scope.region_scope, local_scope, "local scope is not the topmost scope!",); // look for moves of a local variable, like `MOVE(_X)` let locals_moved = operands @@ -1046,9 +1043,9 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { matches!( self.cfg.block_data(start).terminator().kind, TerminatorKind::Assert { .. } - | TerminatorKind::Call {..} - | TerminatorKind::DropAndReplace { .. } - | TerminatorKind::FalseUnwind { .. } + | TerminatorKind::Call { .. } + | TerminatorKind::DropAndReplace { .. } + | TerminatorKind::FalseUnwind { .. } ), "diverge_from called on block with terminator that cannot unwind." ); |