diff options
Diffstat (limited to 'compiler/rustc_mir_dataflow/src')
| -rw-r--r-- | compiler/rustc_mir_dataflow/src/framework/direction.rs | 27 | ||||
| -rw-r--r-- | compiler/rustc_mir_dataflow/src/framework/mod.rs | 11 | ||||
| -rw-r--r-- | compiler/rustc_mir_dataflow/src/impls/initialized.rs | 13 |
3 files changed, 22 insertions, 29 deletions
diff --git a/compiler/rustc_mir_dataflow/src/framework/direction.rs b/compiler/rustc_mir_dataflow/src/framework/direction.rs index 07517d7edab..3d7f9e2d8e7 100644 --- a/compiler/rustc_mir_dataflow/src/framework/direction.rs +++ b/compiler/rustc_mir_dataflow/src/framework/direction.rs @@ -1,9 +1,11 @@ use std::ops::RangeInclusive; -use rustc_middle::mir::{self, BasicBlock, CallReturnPlaces, Location, TerminatorEdges}; +use rustc_middle::mir::{ + self, BasicBlock, CallReturnPlaces, Location, SwitchTargetValue, TerminatorEdges, +}; use super::visitor::ResultsVisitor; -use super::{Analysis, Effect, EffectIndex, Results, SwitchIntTarget}; +use super::{Analysis, Effect, EffectIndex, Results}; pub trait Direction { const IS_FORWARD: bool; @@ -112,14 +114,10 @@ impl Direction for Backward { mir::TerminatorKind::SwitchInt { targets: _, ref discr } => { if let Some(mut data) = analysis.get_switch_int_data(block, discr) { - let values = &body.basic_blocks.switch_sources()[&(block, pred)]; - let targets = - values.iter().map(|&value| SwitchIntTarget { value, target: block }); - let mut tmp = analysis.bottom_value(body); - for target in targets { - tmp.clone_from(&exit_state); - analysis.apply_switch_int_edge_effect(&mut data, &mut tmp, target); + for &value in &body.basic_blocks.switch_sources()[&(block, pred)] { + tmp.clone_from(exit_state); + analysis.apply_switch_int_edge_effect(&mut data, &mut tmp, value); propagate(pred, &tmp); } } else { @@ -292,12 +290,9 @@ impl Direction for Forward { if let Some(mut data) = analysis.get_switch_int_data(block, discr) { let mut tmp = analysis.bottom_value(body); for (value, target) in targets.iter() { - tmp.clone_from(&exit_state); - analysis.apply_switch_int_edge_effect( - &mut data, - &mut tmp, - SwitchIntTarget { value: Some(value), target }, - ); + tmp.clone_from(exit_state); + let value = SwitchTargetValue::Normal(value); + analysis.apply_switch_int_edge_effect(&mut data, &mut tmp, value); propagate(target, &tmp); } @@ -308,7 +303,7 @@ impl Direction for Forward { analysis.apply_switch_int_edge_effect( &mut data, exit_state, - SwitchIntTarget { value: None, target: otherwise }, + SwitchTargetValue::Otherwise, ); propagate(otherwise, exit_state); } else { diff --git a/compiler/rustc_mir_dataflow/src/framework/mod.rs b/compiler/rustc_mir_dataflow/src/framework/mod.rs index 60c5cb0cae8..09f6cdb5c4a 100644 --- a/compiler/rustc_mir_dataflow/src/framework/mod.rs +++ b/compiler/rustc_mir_dataflow/src/framework/mod.rs @@ -38,7 +38,9 @@ use rustc_data_structures::work_queue::WorkQueue; use rustc_index::bit_set::{DenseBitSet, MixedBitSet}; use rustc_index::{Idx, IndexVec}; use rustc_middle::bug; -use rustc_middle::mir::{self, BasicBlock, CallReturnPlaces, Location, TerminatorEdges, traversal}; +use rustc_middle::mir::{ + self, BasicBlock, CallReturnPlaces, Location, SwitchTargetValue, TerminatorEdges, traversal, +}; use rustc_middle::ty::TyCtxt; use tracing::error; @@ -220,7 +222,7 @@ pub trait Analysis<'tcx> { &mut self, _data: &mut Self::SwitchIntData, _state: &mut Self::Domain, - _edge: SwitchIntTarget, + _value: SwitchTargetValue, ) { unreachable!(); } @@ -430,10 +432,5 @@ impl EffectIndex { } } -pub struct SwitchIntTarget { - pub value: Option<u128>, - pub target: BasicBlock, -} - #[cfg(test)] mod tests; diff --git a/compiler/rustc_mir_dataflow/src/impls/initialized.rs b/compiler/rustc_mir_dataflow/src/impls/initialized.rs index 3be450a0b3f..f5ffc42d52a 100644 --- a/compiler/rustc_mir_dataflow/src/impls/initialized.rs +++ b/compiler/rustc_mir_dataflow/src/impls/initialized.rs @@ -4,13 +4,14 @@ use rustc_abi::VariantIdx; use rustc_index::Idx; use rustc_index::bit_set::{DenseBitSet, MixedBitSet}; use rustc_middle::bug; -use rustc_middle::mir::{self, Body, CallReturnPlaces, Location, TerminatorEdges}; +use rustc_middle::mir::{ + self, Body, CallReturnPlaces, Location, SwitchTargetValue, TerminatorEdges, +}; use rustc_middle::ty::util::Discr; use rustc_middle::ty::{self, TyCtxt}; use tracing::{debug, instrument}; use crate::drop_flag_effects::DropFlagState; -use crate::framework::SwitchIntTarget; use crate::move_paths::{HasMoveData, InitIndex, InitKind, LookupResult, MoveData, MovePathIndex}; use crate::{ Analysis, GenKill, MaybeReachable, drop_flag_effects, drop_flag_effects_for_function_entry, @@ -422,9 +423,9 @@ impl<'tcx> Analysis<'tcx> for MaybeInitializedPlaces<'_, 'tcx> { &mut self, data: &mut Self::SwitchIntData, state: &mut Self::Domain, - edge: SwitchIntTarget, + value: SwitchTargetValue, ) { - if let Some(value) = edge.value { + if let SwitchTargetValue::Normal(value) = value { // Kill all move paths that correspond to variants we know to be inactive along this // particular outgoing edge of a `SwitchInt`. drop_flag_effects::on_all_inactive_variants( @@ -535,9 +536,9 @@ impl<'tcx> Analysis<'tcx> for MaybeUninitializedPlaces<'_, 'tcx> { &mut self, data: &mut Self::SwitchIntData, state: &mut Self::Domain, - edge: SwitchIntTarget, + value: SwitchTargetValue, ) { - if let Some(value) = edge.value { + if let SwitchTargetValue::Normal(value) = value { // Mark all move paths that correspond to variants other than this one as maybe // uninitialized (in reality, they are *definitely* uninitialized). drop_flag_effects::on_all_inactive_variants( |