diff options
| -rw-r--r-- | compiler/rustc_const_eval/src/interpret/place.rs | 12 | ||||
| -rw-r--r-- | compiler/rustc_mir_transform/src/promote_consts.rs | 32 | ||||
| -rw-r--r-- | library/panic_unwind/Cargo.toml | 2 |
3 files changed, 22 insertions, 24 deletions
diff --git a/compiler/rustc_const_eval/src/interpret/place.rs b/compiler/rustc_const_eval/src/interpret/place.rs index 08d3165867c..baaee67e787 100644 --- a/compiler/rustc_const_eval/src/interpret/place.rs +++ b/compiler/rustc_const_eval/src/interpret/place.rs @@ -441,7 +441,7 @@ where /// Take an operand, representing a pointer, and dereference it to a place. /// Corresponds to the `*` operator in Rust. - #[instrument(skip(self), level = "debug")] + #[instrument(skip(self), level = "trace")] pub fn deref_pointer( &self, src: &impl Readable<'tcx, M::Provenance>, @@ -533,7 +533,7 @@ where /// Computes a place. You should only use this if you intend to write into this /// place; for reading, a more efficient alternative is `eval_place_to_op`. - #[instrument(skip(self), level = "debug")] + #[instrument(skip(self), level = "trace")] pub fn eval_place( &self, mir_place: mir::Place<'tcx>, @@ -570,7 +570,7 @@ where /// Write an immediate to a place #[inline(always)] - #[instrument(skip(self), level = "debug")] + #[instrument(skip(self), level = "trace")] pub fn write_immediate( &mut self, src: Immediate<M::Provenance>, @@ -808,7 +808,7 @@ where /// Copies the data from an operand to a place. /// `allow_transmute` indicates whether the layouts may disagree. #[inline(always)] - #[instrument(skip(self), level = "debug")] + #[instrument(skip(self), level = "trace")] fn copy_op_inner( &mut self, src: &impl Readable<'tcx, M::Provenance>, @@ -837,7 +837,7 @@ where /// `allow_transmute` indicates whether the layouts may disagree. /// Also, if you use this you are responsible for validating that things get copied at the /// right type. - #[instrument(skip(self), level = "debug")] + #[instrument(skip(self), level = "trace")] fn copy_op_no_validate( &mut self, src: &impl Readable<'tcx, M::Provenance>, @@ -914,7 +914,7 @@ where /// If the place currently refers to a local that doesn't yet have a matching allocation, /// create such an allocation. /// This is essentially `force_to_memplace`. - #[instrument(skip(self), level = "debug")] + #[instrument(skip(self), level = "trace")] pub fn force_allocation( &mut self, place: &PlaceTy<'tcx, M::Provenance>, diff --git a/compiler/rustc_mir_transform/src/promote_consts.rs b/compiler/rustc_mir_transform/src/promote_consts.rs index ecdca8292b4..3f4d2b65ff2 100644 --- a/compiler/rustc_mir_transform/src/promote_consts.rs +++ b/compiler/rustc_mir_transform/src/promote_consts.rs @@ -60,7 +60,7 @@ impl<'tcx> MirPass<'tcx> for PromoteTemps<'tcx> { let ccx = ConstCx::new(tcx, body); let (mut temps, all_candidates) = collect_temps_and_candidates(&ccx); - let promotable_candidates = validate_candidates(&ccx, &mut temps, &all_candidates); + let promotable_candidates = validate_candidates(&ccx, &mut temps, all_candidates); let promoted = promote_candidates(body, tcx, temps, promotable_candidates); self.promoted_fragments.set(promoted); @@ -98,8 +98,8 @@ struct Collector<'a, 'tcx> { } impl<'tcx> Visitor<'tcx> for Collector<'_, 'tcx> { + #[instrument(level = "debug", skip(self))] fn visit_local(&mut self, index: Local, context: PlaceContext, location: Location) { - debug!("visit_local: index={:?} context={:?} location={:?}", index, context, location); // We're only interested in temporaries and the return place match self.ccx.body.local_kind(index) { LocalKind::Arg => return, @@ -111,20 +111,15 @@ impl<'tcx> Visitor<'tcx> for Collector<'_, 'tcx> { // then it's constant and thus drop is noop. // Non-uses are also irrelevant. if context.is_drop() || !context.is_use() { - debug!( - "visit_local: context.is_drop={:?} context.is_use={:?}", - context.is_drop(), - context.is_use(), - ); + debug!(is_drop = context.is_drop(), is_use = context.is_use()); return; } let temp = &mut self.temps[index]; - debug!("visit_local: temp={:?}", temp); + debug!(?temp); *temp = match *temp { TempState::Undefined => match context { - PlaceContext::MutatingUse(MutatingUseContext::Store) - | PlaceContext::MutatingUse(MutatingUseContext::Call) => { + PlaceContext::MutatingUse(MutatingUseContext::Store | MutatingUseContext::Call) => { TempState::Defined { location, uses: 0, valid: Err(()) } } _ => TempState::Unpromotable, @@ -137,7 +132,7 @@ impl<'tcx> Visitor<'tcx> for Collector<'_, 'tcx> { | PlaceContext::NonMutatingUse(_) => true, PlaceContext::MutatingUse(_) | PlaceContext::NonUse(_) => false, }; - debug!("visit_local: allowed_use={:?}", allowed_use); + debug!(?allowed_use); if allowed_use { *uses += 1; return; @@ -146,6 +141,7 @@ impl<'tcx> Visitor<'tcx> for Collector<'_, 'tcx> { } TempState::Unpromotable | TempState::PromotedOut => TempState::Unpromotable, }; + debug!(?temp); } fn visit_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location) { @@ -695,15 +691,12 @@ impl<'tcx> Validator<'_, 'tcx> { fn validate_candidates( ccx: &ConstCx<'_, '_>, temps: &mut IndexSlice<Local, TempState>, - candidates: &[Candidate], + mut candidates: Vec<Candidate>, ) -> Vec<Candidate> { let mut validator = Validator { ccx, temps, promotion_safe_blocks: None }; + candidates.retain(|&candidate| validator.validate_candidate(candidate).is_ok()); candidates - .iter() - .copied() - .filter(|&candidate| validator.validate_candidate(candidate).is_ok()) - .collect() } struct Promoter<'a, 'tcx> { @@ -972,7 +965,12 @@ fn promote_candidates<'tcx>( candidates: Vec<Candidate>, ) -> IndexVec<Promoted, Body<'tcx>> { // Visit candidates in reverse, in case they're nested. - debug!("promote_candidates({:?})", candidates); + debug!(promote_candidates = ?candidates); + + // eagerly fail fast + if candidates.is_empty() { + return IndexVec::new(); + } let mut promotions = IndexVec::new(); diff --git a/library/panic_unwind/Cargo.toml b/library/panic_unwind/Cargo.toml index dce2da31644..f830808d196 100644 --- a/library/panic_unwind/Cargo.toml +++ b/library/panic_unwind/Cargo.toml @@ -16,7 +16,7 @@ alloc = { path = "../alloc" } core = { path = "../core" } unwind = { path = "../unwind" } compiler_builtins = "0.1.0" -cfg-if = "1.0" +cfg-if = { version = "1.0", features = ['rustc-dep-of-std'] } [target.'cfg(not(all(windows, target_env = "msvc")))'.dependencies] libc = { version = "0.2", default-features = false } |