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This way it's like `Definitions`, which creates `DefId`s by interning `DefPathData`s, but for interning stable crate hashes
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provided by source code
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Remove `feed_local_def_id`
best reviewed commit by commit
Basically I returned `TyCtxtFeed` from `create_def` and then preserved that in the local caches
based on https://github.com/rust-lang/rust/pull/121084
r? ````@petrochenkov````
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Existing names for values of this type are `sess`, `parse_sess`,
`parse_session`, and `ps`. `sess` is particularly annoying because
that's also used for `Session` values, which are often co-located, and
it can be difficult to know which type a value named `sess` refers to.
(That annoyance is the main motivation for this change.) `psess` is nice
and short, which is good for a name used this much.
The commit also renames some `parse_sess_created` values as
`psess_created`.
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Because it's now simple enough that it doesn't provide much benefit.
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Currently `emit_stashed_diagnostic` is called from four(!) different
places: `print_error_count`, `DiagCtxtInner::drop`, `abort_if_errors`,
and `compile_status`.
And `flush_delayed` is called from two different places:
`DiagCtxtInner::drop` and `Queries`.
This is pretty gross! Each one should really be called from a single
place, but there's a bunch of entanglements. This commit cleans up this
mess.
Specifically, it:
- Removes all the existing calls to `emit_stashed_diagnostic`, and adds
a single new call in `finish_diagnostics`.
- Removes the early `flush_delayed` call in `codegen_and_build_linker`,
replacing it with a simple early return if delayed bugs are present.
- Changes `DiagCtxtInner::drop` and `DiagCtxtInner::flush_delayed` so
they both assert that the stashed diagnostics are empty (i.e.
processed beforehand).
- Changes `interface::run_compiler` so that any errors emitted during
`finish_diagnostics` (i.e. late-emitted stashed diagnostics) are
counted and cannot be overlooked. This requires adding
`ErrorGuaranteed` return values to several functions.
- Removes the `stashed_err_count` call in `analysis`. This is possible
now that we don't have to worry about calling `flush_delayed` early
from `codegen_and_build_linker` when stashed diagnostics are pending.
- Changes the `span_bug` case in `handle_tuple_field_pattern_match` to a
`delayed_span_bug`, because it now can be reached due to the removal
of the `stashed_err_count` call in `analysis`.
- Slightly changes the expected output of three tests. If no errors are
emitted but there are delayed bugs, the error count is no longer
printed. This is because delayed bugs are now always printed after the
error count is printed (or not printed, if the error count is zero).
There is a lot going on in this commit. It's hard to break into smaller
pieces because the existing code is very tangled. It took me a long time
and a lot of effort to understand how the different pieces interact, and
I think the new code is a lot simpler and easier to understand.
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Because they all are, in practice.
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Now that we have both `delayed_bug` and `span_delayed_bug`, it makes
sense to use the generic term "delayed bug" more.
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For consistency with `warn`/`struct_warn`, and also `{create,emit}_err`,
all of which use an abbreviated form.
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This works for most of its call sites. This is nice, because `emit` very
much makes sense as a consuming operation -- indeed,
`DiagnosticBuilderState` exists to ensure no diagnostic is emitted
twice, but it uses runtime checks.
For the small number of call sites where a consuming emit doesn't work,
the commit adds `DiagnosticBuilder::emit_without_consuming`. (This will
be removed in subsequent commits.)
Likewise, `emit_unless` becomes consuming. And `delay_as_bug` becomes
consuming, while `delay_as_bug_without_consuming` is added (which will
also be removed in subsequent commits.)
All this requires significant changes to `DiagnosticBuilder`'s chaining
methods. Currently `DiagnosticBuilder` method chaining uses a
non-consuming `&mut self -> &mut Self` style, which allows chaining to
be used when the chain ends in `emit()`, like so:
```
struct_err(msg).span(span).emit();
```
But it doesn't work when producing a `DiagnosticBuilder` value,
requiring this:
```
let mut err = self.struct_err(msg);
err.span(span);
err
```
This style of chaining won't work with consuming `emit` though. For
that, we need to use to a `self -> Self` style. That also would allow
`DiagnosticBuilder` production to be chained, e.g.:
```
self.struct_err(msg).span(span)
```
However, removing the `&mut self -> &mut Self` style would require that
individual modifications of a `DiagnosticBuilder` go from this:
```
err.span(span);
```
to this:
```
err = err.span(span);
```
There are *many* such places. I have a high tolerance for tedious
refactorings, but even I gave up after a long time trying to convert
them all.
Instead, this commit has it both ways: the existing `&mut self -> Self`
chaining methods are kept, and new `self -> Self` chaining methods are
added, all of which have a `_mv` suffix (short for "move"). Changes to
the existing `forward!` macro lets this happen with very little
additional boilerplate code. I chose to add the suffix to the new
chaining methods rather than the existing ones, because the number of
changes required is much smaller that way.
This doubled chainging is a bit clumsy, but I think it is worthwhile
because it allows a *lot* of good things to subsequently happen. In this
commit, there are many `mut` qualifiers removed in places where
diagnostics are emitted without being modified. In subsequent commits:
- chaining can be used more, making the code more concise;
- more use of chaining also permits the removal of redundant diagnostic
APIs like `struct_err_with_code`, which can be replaced easily with
`struct_err` + `code_mv`;
- `emit_without_diagnostic` can be removed, which simplifies a lot of
machinery, removing the need for `DiagnosticBuilderState`.
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Also add some `dcx` methods to types that wrap `TyCtxt`, for easier
access.
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Because the corresponding `Level` is `DelayedBug` and `span_delayed_bug`
follows the pattern used everywhere else: `span_err`, `span_warning`,
etc.
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It has side-effects and as such can't be cached.
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build_output_filenames"
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Since the introduction of the crate attribute pre-expansion pass we
don't need access to the TyCtxt to compute it.
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This ensures that linking will use the correct crate name even when
`#![crate_name = "..."]` is used to specify the crate name.
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There is no real need for them to be separate.
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And remove the relevant getters on `Compiler` and `Queries`.
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`x clippy compiler -Aclippy::all -Wclippy::needless_borrow --fix`.
Then I had to remove a few unnecessary parens and muts that were exposed
now.
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Like `Compiler::codegen_backend`.
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It matches the type, and a noun makes more sense than a verb.
The `output_filenames` function still uses a profiling label named
`prepare_outputs`, but I think that makes sense as a verb and can be
left unchanged.
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It can easily be passed in. And that removes the single clone of
`Compiler::codegen_backend`, which means it no longer needs to be `Lrc`.
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It can easily be passed in. And that removes the single clone of
`Compiler::session`, which means it no longer needs to be `Lrc`.
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This was made possible by the removal of plugin support, which
simplified lint store creation.
This simplifies the places in rustc and rustdoc that call
`describe_lints`, which are early on. The lint store is now built before
those places, so they don't have to create their own lint store for
temporary use, they can just use the main one.
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They've been deprecated for four years.
This commit includes the following changes.
- It eliminates the `rustc_plugin_impl` crate.
- It changes the language used for lints in
`compiler/rustc_driver_impl/src/lib.rs` and
`compiler/rustc_lint/src/context.rs`. External lints are now called
"loaded" lints, rather than "plugins" to avoid confusion with the old
plugins. This only has a tiny effect on the output of `-W help`.
- E0457 and E0498 are no longer used.
- E0463 is narrowed, now only relating to unfound crates, not plugins.
- The `plugin` feature was moved from "active" to "removed".
- It removes the entire plugins chapter from the unstable book.
- It removes quite a few tests, mostly all of those in
`tests/ui-fulldeps/plugin/`.
Closes #29597.
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This keeps track of usage of internal features, and changes the message
to instead tell them that using internal features is not supported.
See MCP 620.
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Some more small driver refactors
To improve clarity and simplify some code.
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Only deprecating it rather than making it private to just in case
someone has a use case for it.
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It is only used by CrateLoader. We can store the metadata loader in
CStore instead which CrateLoader has access to.
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Constructing an FxIndexMap is useless work as the iteration order never
matters.
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All of them are not exported from rustc_interface and used only during
global_ctxt(). Inlining them makes it easier to follow the order of
queries and slightly reduces line count.
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