Ensure that `Fingerprint` caching respects hashing configuration
Fixes#92266
In some `HashStable` impls, we use a cache to avoid re-computing
the same `Fingerprint` from the same structure (e.g. an `AdtDef`).
However, the `StableHashingContext` used can be configured to
perform hashing in different ways (e.g. skipping `Span`s). This
configuration information is not included in the cache key,
which will cause an incorrect `Fingerprint` to be used if
we hash the same structure with different `StableHashingContext`
settings.
To fix this, the configuration settings of `StableHashingContext`
are split out into a separate `HashingControls` struct. This
struct is used as part of the cache key, ensuring that our caches
always produce the correct result for the given settings.
With this in place, we now turn off `Span` hashing during the
entire process of computing the hash included in legacy symbols.
This current has no effect, but will matter when a future PR
starts hashing more `Span`s that we currently skip.
Hash `Ident` spans in all HIR structures
This PR removes all of the `#[stable_hasher(project(name))]`
attributes used in HIR structs. While these attributes are not known
to be causing any issues in practice, we need to hash these in
order for the incremental system to work correctly -
a query could be otherwise be incorrectly marked green
when a change occures in one of the `Span`s that it uses.
rustdoc: Introduce a resolver cache for sharing data between early doc link resolution and later passes
The refactoring parts of https://github.com/rust-lang/rust/pull/88679, shouldn't cause any slowdowns.
r? `@jyn514`
expand: Refactor InvocationCollector visitor for better code reuse
The refactoring part of https://github.com/rust-lang/rust/pull/92473.
Invocation collector visitor logic now lives in two main functions:
- `fn flat_map_node`, corresponding to "one to many" expansions
- `fn visit_node`, corresponding to "one to one" expansions
All specific mut visitor methods now use one of these functions.
The new `InvocationCollectorNode` trait implemented for all `AstFragment` nodes provides the necessary small pieces of functionality required to implement the `(flat_map,visit)_node` functions.
r? `@Aaron1011`
Don't resolve blocks in foreign functions
Although it is an error for a foreign function to have a block, it is still possible at the level of the AST. #74204 made AST lowering skip over blocks belonging to foreign functions, since they're invalid. However, resolve still treated these blocks normally, resulting in a mismatch between the HIR and resolve, which could cause an ICE under certain circumstances. This PR changes resolve to skip over blocks belonging to foreign functions, as AST lowering does.
Fixes#91370.
r? ``@cjgillot``
rustc_metadata: Optimize and document module children decoding
The first commit limits the item in the `item_children`/`each_child_of_item` query to modules (in name resolution sense) and adds a corresponding assertion.
The `associated_item_def_ids` query collecting children of traits and impls specifically now uses a simplified implementation not decoding unnecessary data instead of `each_child_of_item`, this gives a nice performance improvement.
The second commit does some renaming that clarifies the terminology used for all items in a module vs `use` items only.
Don't perform any new queries while reading a query result on disk
In addition to being very confusing, this can cause us to add dep node edges between two queries that would not otherwise have an edge.
We now panic if any new dep node edges are created during the deserialization of a query result. This requires serializing the full `AdtDef` to disk, instead of just serializing the `DefId` and invoking the `adt_def` query during deserialization.
I'll probably split this up into several smaller PRs for perf runs.
Add a query for resolving an impl item from the trait item
This makes finding the item in an impl that implements a given trait item a query. This is for a few reasons:
- To slightly improve performance
- To avoid having to do name resolution during monomorphisation
- To make it easier to implement potential future features that create anonymous associated items
Consolidate checking for msvc when generating debuginfo
If the target we're generating code for is msvc, then we do two main
things differently: we generate type names in a C++ style instead of a
Rust style and we generate debuginfo for enums differently.
I've refactored the code so that there is one function
(`cpp_like_debuginfo`) which determines if we should use the C++ style
of naming types and other debuginfo generation or the regular Rust one.
r? ``@michaelwoerister``
This PR is not urgent so please don't let it interrupt your holidays! 🎄🎁
Remove &self from PrintState::to_string
The point of `PrintState::to_string` is to create a `State` and evaluate the caller's closure on it:
e9fbe79292/compiler/rustc_ast_pretty/src/pprust/state.rs (L868-L872)
Making the caller *also* construct and pass in a `State`, which is then ignored, was confusing.
If the target we're generating code for is msvc, then we do two main
things differently: we generate type names in a C++ style instead of a
Rust style and we generate debuginfo for enums differently.
I've refactored the code so that there is one function
(`cpp_like_debuginfo`) which determines if we should use the C++ style
of naming types and other debuginfo generation or the regular Rust one.
RustWrapper: adapt to new AttributeMask API
Upstream LLVM change 9290ccc3c1a1 migrated attribute removal to use
AttributeMask instead of AttrBuilder, so we need to follow suit here.
r? ``@nagisa`` cc ``@nikic``
Exit nonzero on rustc -Wall
Previously `rustc -Wall /dev/null` would print a paragraph explaining that `-Wall` is not a thing in Rust, but would then exit 0. I believe exiting 0 is not the right behavior. For something like `rustc --version` or `rustc --help` or `rustc -C help` the user is requesting rustc to print some information; rustc prints that information and exits 0 because what the user requested has been accomplished. In the case of `rustc -Wall path/to/main.rs`, I don't find it correct to conceptualize this as "the user requested rustc to print information about the fact that Wall doesn't exist". The user requested a particular thing, and despite rustc knowing what they probably meant and informing them about that, the thing they requested has *not* been accomplished. Thus a nonzero exit code is needed.
Fix spacing and ordering of words in pretty printed Impl
Follow-up to #92238 fixing one of the FIXMEs.
```rust
macro_rules! repro {
($item:item) => {
stringify!($item)
};
}
fn main() {
println!("{}", repro!(impl<T> Struct<T> {}));
println!("{}", repro!(impl<T> const Trait for T {}));
}
```
Before: `impl <T> Struct<T> {}`
After: `impl<T> Struct<T> {}`
Before: `impl const <T> Trait for T {}` 😿
After: `impl<T> const Trait for T {}`
Delay remaining `span_bug`s in drop elaboration
This follows changes from #67967 and converts remaining `span_bug`s into
delayed bugs, since for const items drop elaboration might be executed
on a MIR which failed borrowck.
Fixes#81708.
Fixes#91816.
return the correct type for closures in `type_of`
A bit unhappy about the way `typeck::check_crate` works rn. Would have preferred to not change `CollectItemTypesVisitor` in this way.
r? ``@nikomatsakis``
Rollup of 7 pull requests
Successful merges:
- #92058 (Make Run button visible on hover)
- #92288 (Fix a pair of mistyped test cases in `std::net::ip`)
- #92349 (Fix rustdoc::private_doc_tests lint for public re-exported items)
- #92360 (Some cleanups around check_argument_types)
- #92389 (Regression test for borrowck ICE #92015)
- #92404 (Fix font size for [src] links in headers)
- #92443 (Rustdoc: resolve associated traits for non-generic primitive types)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Some cleanups around check_argument_types
Split out in ways from my rebase/continuation of #71827
Commits are mostly self-explanatory and these changes should be fairly straightforward
`thorin` is a Rust implementation of a DWARF packaging utility that
supports reading DWARF objects from archive files (i.e. rlibs) and
therefore is better suited for integration into rustc.
Signed-off-by: David Wood <david.wood@huawei.com>
In #79570, `-Z split-dwarf-kind={none,single,split}` was replaced by `-C
split-debuginfo={off,packed,unpacked}`. `-C split-debuginfo`'s packed
and unpacked aren't exact parallels to single and split, respectively.
On Unix, `-C split-debuginfo=packed` will put debuginfo into object
files and package debuginfo into a DWARF package file (`.dwp`) and
`-C split-debuginfo=unpacked` will put debuginfo into dwarf object files
and won't package it.
In the initial implementation of Split DWARF, split mode wrote sections
which did not require relocation into a DWARF object (`.dwo`) file which
was ignored by the linker and then packaged those DWARF objects into
DWARF packages (`.dwp`). In single mode, sections which did not require
relocation were written into object files but ignored by the linker and
were not packaged. However, both split and single modes could be
packaged or not, the primary difference in behaviour was where the
debuginfo sections that did not require link-time relocation were
written (in a DWARF object or the object file).
This commit re-introduces a `-Z split-dwarf-kind` flag, which can be
used to pick between split and single modes when `-C split-debuginfo` is
used to enable Split DWARF (either packed or unpacked).
Signed-off-by: David Wood <david.wood@huawei.com>
By avoiding formatting and allocations in the no-ident case, and by making the span mandatory if the ident exists.
Use the optimized `opt_item_ident` to cleanup `fn each_child_of_item`
Rollup of 7 pull requests
Successful merges:
- #92092 (Drop guards in slice sorting derive src pointers from &mut T, which is invalidated by interior mutation in comparison)
- #92388 (Fix a minor mistake in `String::try_reserve_exact` examples)
- #92442 (Add negative `impl` for `Ord`, `PartialOrd` on `LocalDefId`)
- #92483 (Stabilize `result_cloned` and `result_copied`)
- #92574 (Add RISC-V detection macro and more architecture instructions)
- #92575 (ast: Always keep a `NodeId` in `ast::Crate`)
- #92583 (⬆️ rust-analyzer)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
