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As per review request.
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This is something that took me some time to figure out.
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I find that these structs obfuscate the code. Removing them and just
passing the individual fields around makes the `Partition` method
signatures a little longer, but makes the data flow much clearer. E.g.
- `codegen_units` is mutable all the way through.
- `codegen_units`'s length is changed by `merge_codegen_units`, but only
the individual elements are changed by `place_inlined_mono_items` and
`internalize_symbols`.
- `roots`, `internalization_candidates`, and `mono_item_placements` are
all immutable after creation, and all used by just one of the four
methods.
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Three of the four methods in `DefaultPartitioning` are defined in
`default.rs`. But `merge_codegen_units` is defined in a separate module,
`merging`, even though it's less than 100 lines of code and roughly the
same size as the other three methods. (Also, the `merging` module
currently sits alongside `default`, when it should be a submodule of
`default`, adding to the confusion.)
In #74275 this explanation was given:
> I pulled this out into a separate module since it seemed like we might
> want a few different merge algorithms to choose from.
But in the three years since there have been no additional merging
algorithms, and there is no mechanism for choosing between different
merging algorithms. (There is a mechanism,
`-Zcgu-partitioning-strategy`, for choosing between different
partitioning strategies, but the merging algorithm is just one piece of
a partitioning strategy.)
This commit merges `merging` into `default`, making the code easier to
navigate and read.
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It is small and has a single call site, and this change will facilitate
the next commit.
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- Pass a slice instead of an iterator to `debug_dump`.
- For each CGU set, print: the number of CGUs, the max and min size, and
the ratio of the max and min size (which indicates how evenly sized
they are).
- Print a `FINAL` entry, showing the absolute final results.
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Replace `tcx.mk_trait_ref` with `TraitRef::new`
First step in implementing https://github.com/rust-lang/compiler-team/issues/616
r? `@lcnr`
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a `Span`
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Run various queries from other queries instead of explicitly in phases
These are just legacy leftovers from when rustc didn't have a query system. While there are more cleanups of this sort that can be done here, I want to land them in smaller steps.
This phased order of query invocations was already a lie, as any query that looks at types (e.g. the wf checks run before) can invoke e.g. const eval which invokes borrowck, which invokes typeck, ...
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Remove some uses of dynamic dispatch during monomorphization/partitioning.
This removes a few uses of dynamic dispatch and instead uses generics, as well as an enum to allow for other partitioning methods to be added later.
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monomorphization/partitioning with the use of
an enum.
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Add `rustc_fluent_macro` to decouple fluent from `rustc_macros`
Fluent, with all the icu4x it brings in, takes quite some time to compile. `fluent_messages!` is only needed in further downstream rustc crates, but is blocking more upstream crates like `rustc_index`. By splitting it out, we allow `rustc_macros` to be compiled earlier, which speeds up `x check compiler` by about 5 seconds (and even more after the needless dependency on `serde_json` is removed from `rustc_data_structures`).
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Fluent, with all the icu4x it brings in, takes quite some time to
compile. `fluent_messages!` is only needed in further downstream rustc
crates, but is blocking more upstream crates like `rustc_index`. By
splitting it out, we allow `rustc_macros` to be compiled earlier, which
speeds up `x check compiler` by about 5 seconds (and even more after the
needless dependency on `serde_json` is removed from
`rustc_data_structures`).
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* account
* achieved
* advising
* always
* ambiguous
* analysis
* annotations
* appropriate
* build
* candidates
* cascading
* category
* character
* clarification
* compound
* conceptually
* constituent
* consts
* convenience
* corresponds
* debruijn
* debug
* debugable
* debuggable
* deterministic
* discriminant
* display
* documentation
* doesn't
* ellipsis
* erroneous
* evaluability
* evaluate
* evaluation
* explicitly
* fallible
* fulfill
* getting
* has
* highlighting
* illustrative
* imported
* incompatible
* infringing
* initialized
* into
* intrinsic
* introduced
* javascript
* liveness
* metadata
* monomorphization
* nonexistent
* nontrivial
* obligation
* obligations
* offset
* opaque
* opportunities
* opt-in
* outlive
* overlapping
* paragraph
* parentheses
* poisson
* precisely
* predecessors
* predicates
* preexisting
* propagated
* really
* reentrant
* referent
* responsibility
* rustonomicon
* shortcircuit
* simplifiable
* simplifications
* specify
* stabilized
* structurally
* suggestibility
* translatable
* transmuting
* two
* unclosed
* uninhabited
* visibility
* volatile
* workaround
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>
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Unify terminology used in unwind action and terminator, and reflect
the fact that a nounwind panic is triggered instead of an immediate
abort is triggered for this terminator.
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more clippy::complexity fixes (iter_kv_map, map_flatten, nonminimal_bool)
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map_identity
filter_next
option_as_ref_deref
unnecessary_find_map
redundant_slicing
unnecessary_unwrap
bool_comparison
derivable_impls
manual_flatten
needless_borrowed_reference
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Update `ty::VariantDef` to use `IndexVec<FieldIdx, FieldDef>`
And while doing the updates for that, also uses `FieldIdx` in `ProjectionKind::Field` and `TypeckResults::field_indices`.
There's more places that could use it (like `rustc_const_eval` and `LayoutS`), but I tried to keep this PR from exploding to *even more* places.
Part 2/? of https://github.com/rust-lang/compiler-team/issues/606
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Parallel compiler cleanups
A few small improvements I found while looking closely at this code.
r? `@cjgillot`
cc `@Zoxc,` `@SparrowLii`
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And while doing the updates for that, also uses `FieldIdx` in `ProjectionKind::Field` and `TypeckResults::field_indices`.
There's more places that could use it (like `rustc_const_eval` and `LayoutS`), but I tried to keep this PR from exploding to *even more* places.
Part 2/? of https://github.com/rust-lang/compiler-team/issues/606
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Also, `MTRef<'a, T>` is a typedef for a reference to a `T`, but in
practice it's only used (and useful) in combination with `MTLock`, i.e.
`MTRef<'a, MTLock<T>>`. So this commit changes it to be a typedef for a
reference to an `MTLock<T>`, and renames it as `MTLockRef`. I think this
clarifies things, because I found `MTRef` quite puzzling at first.
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Rollup of 8 pull requests
Successful merges:
- #91793 (socket ancillary data implementation for FreeBSD (from 13 and above).)
- #92284 (Change advance(_back)_by to return the remainder instead of the number of processed elements)
- #102472 (stop special-casing `'static` in evaluation)
- #108480 (Use Rayon's TLV directly)
- #109321 (Erase impl regions when checking for impossible to eagerly monomorphize items)
- #109470 (Correctly substitute GAT's type used in `normalize_param_env` in `check_type_bounds`)
- #109562 (Update ar_archive_writer to 0.1.3)
- #109629 (remove obsolete `givens` from regionck)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Use `unused_generic_params` from crate metadata
Due to the way that `separate_provide_extern` interacted with the implementation of `<ty::InstanceDef<'tcx> as Key>::query_crate_is_local`, we actually never hit the foreign provider for `unused_generic_params`.
Additionally, since the *local* provider of `unused_generic_params` calls `should_polymorphize`, which always returns false if the def-id is foreign, this means that we never actually polymorphize monomorphic instances originating from foreign crates.
We don't actually encode `unused_generic_params` for items where all generics are used, so I had to tweak the foreign provider to fall back to `ty::UnusedGenericParams::new_all_used()` to avoid more ICEs when the above bugs were fixed.
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This makes it easier to open the messages file while developing on features.
The commit was the result of automatted changes:
for p in compiler/rustc_*; do mv $p/locales/en-US.ftl $p/messages.ftl; rmdir $p/locales; done
for p in compiler/rustc_*; do sed -i "s#\.\./locales/en-US.ftl#../messages.ftl#" $p/src/lib.rs; done
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Rollup of 8 pull requests
Successful merges:
- #108754 (Retry `pred_known_to_hold_modulo_regions` with fulfillment if ambiguous)
- #108759 (1.41.1 supported 32-bit Apple targets)
- #108839 (Canonicalize root var when making response from new solver)
- #108856 (Remove DropAndReplace terminator)
- #108882 (Tweak E0740)
- #108898 (Set `LIBC_CHECK_CFG=1` when building Rust code in bootstrap)
- #108911 (Improve rustdoc-gui/tester.js code a bit)
- #108916 (Remove an unused return value in `rustc_hir_typeck`)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Remove DropAndReplace terminator
#107844 made DropAndReplace unused, let's remove it completely from the codebase.
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PR 107844 made DropAndReplace unused, let's remove it completely
from the codebase.
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This trait was a way to generalize over both `TyCtxt` and `Resolver`, but now `Resolver` has access to `TyCtxt`, so this trait is no longer necessary.
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(This is a large commit. The changes to
`compiler/rustc_middle/src/ty/context.rs` are the most important ones.)
The current naming scheme is a mess, with a mix of `_intern_`, `intern_`
and `mk_` prefixes, with little consistency. In particular, in many
cases it's easy to use an iterator interner when a (preferable) slice
interner is available.
The guiding principles of the new naming system:
- No `_intern_` prefixes.
- The `intern_` prefix is for internal operations.
- The `mk_` prefix is for external operations.
- For cases where there is a slice interner and an iterator interner,
the former is `mk_foo` and the latter is `mk_foo_from_iter`.
Also, `slice_interners!` and `direct_interners!` can now be `pub` or
non-`pub`, which helps enforce the internal/external operations
division.
It's not perfect, but I think it's a clear improvement.
The following lists show everything that was renamed.
slice_interners
- const_list
- mk_const_list -> mk_const_list_from_iter
- intern_const_list -> mk_const_list
- substs
- mk_substs -> mk_substs_from_iter
- intern_substs -> mk_substs
- check_substs -> check_and_mk_substs (this is a weird one)
- canonical_var_infos
- intern_canonical_var_infos -> mk_canonical_var_infos
- poly_existential_predicates
- mk_poly_existential_predicates -> mk_poly_existential_predicates_from_iter
- intern_poly_existential_predicates -> mk_poly_existential_predicates
- _intern_poly_existential_predicates -> intern_poly_existential_predicates
- predicates
- mk_predicates -> mk_predicates_from_iter
- intern_predicates -> mk_predicates
- _intern_predicates -> intern_predicates
- projs
- intern_projs -> mk_projs
- place_elems
- mk_place_elems -> mk_place_elems_from_iter
- intern_place_elems -> mk_place_elems
- bound_variable_kinds
- mk_bound_variable_kinds -> mk_bound_variable_kinds_from_iter
- intern_bound_variable_kinds -> mk_bound_variable_kinds
direct_interners
- region
- intern_region (unchanged)
- const
- mk_const_internal -> intern_const
- const_allocation
- intern_const_alloc -> mk_const_alloc
- layout
- intern_layout -> mk_layout
- adt_def
- intern_adt_def -> mk_adt_def_from_data (unusual case, hard to avoid)
- alloc_adt_def(!) -> mk_adt_def
- external_constraints
- intern_external_constraints -> mk_external_constraints
Other
- type_list
- mk_type_list -> mk_type_list_from_iter
- intern_type_list -> mk_type_list
- tup
- mk_tup -> mk_tup_from_iter
- intern_tup -> mk_tup
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