Add more APIs to retrieve information about types, and add more instance
resolution options.
Make `Instance::body()` return an Option<Body>, since not every instance
might have an available body. For example, foreign instances, virtual
instances, dependencies.
In cases like Kani, we will invoke the rustc_internal run command
directly for now. It would be handly to be able to have a callback
that can return a value.
We also need extra methods to convert stable constructs into internal
ones, so we can break down the transition into finer grain commits.
Building rustc with `--rust-profile-use` is currently dumping a lot of
warnings of "no profile data available for function" from `rustc_smir`
and `stable_mir`. These simply aren't exercised by the current profile-
gathering steps, but that's to be expected for new or experimental
functionality. I think for most people, these warnings will be just
noise, so it makes sense to only have them in verbose builds.
code: expose workspaces to other extensions; remove `addProject` command
This (mostly red) PR does three things:
- Exposes two methods to companion extensions (`setWorkspaces` and `notifyRustAnalyzer`).
- `setWorkspaces` is needed to update `linkedProjects` _without_ writing workspace/global configuration.
- `notifyRustAnalyzer` to get the server to pull the new configuration.
- Makes `Ctx` implement `RustAnalyzerExtensionApi` to prevent accidental regressions.
- Remove `rust-analyzer.addProject`, as that will live in a buck2 companion extension. No need for that to be in rust-analyzer!
I can see the utility of combining `notifyRustAnalyzer` and `setWorkspaces` into a single method (`updateWorkspacesAndNotify()`?), but I don't feel strongly about this. My feeling is that this API could be easily changed in the future.
When encountering a type error caused by the use of `Self`, suggest
using the actual type name instead.
```
error[E0308]: mismatched types
--> $DIR/struct-path-self-type-mismatch.rs:13:9
|
LL | impl<T> Foo<T> {
| - ------ this is the type of the `Self` literal
| |
| found type parameter
LL | fn new<U>(u: U) -> Foo<U> {
| - ------ expected `Foo<U>` because of return type
| |
| expected type parameter
LL | / Self {
LL | |
LL | | inner: u
LL | |
LL | | }
| |_________^ expected `Foo<U>`, found `Foo<T>`
|
= note: expected struct `Foo<U>`
found struct `Foo<T>`
= note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound
= note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters
help: use the type name directly
|
LL | Foo::<U> {
| ~~~~~~~~
```
Fix#76086.
Ensure strings created with `const_str` get the `unnamed_addr` attribute
This function (`const_str`) is only used when we need to invent a string during codegen -- for example, for a panic message to pass when codegening some of the assert/panic/etc terminators (for stuff like divide by zero).
AFAICT all other consts, such as the user-defined ones from const eval, should already be getting this attribute (things that come from a ConstAllocation do, for example). Which means that the "unnamed" part is even more true than usual here, these aren't strings that even exist as far as the user can tell.
~~Setting this attribute allows LLVM to merge these constants, leading to significant binary size savings (much more than I would expect). On x86_64-unknown-linux-gnu, t takes a build of ripgrep (release without debug info) from 9.7MiB to 6.0MiB (a savings of over 30%!?), and a build of rustc_driver's shared object from 123MiB to 112MiB (less drastic, but still over 10% reduced).~~
~~The effect on ripgrep is substantially reduced on macOS for reasons beyond me (I may have fucked up the test), only saving around 0.2MiB, although rustc_driver is still around 10MB or smaller than it had been previously.~~
~~This raises some questions, such as "does that mean 1/3 of ripgrep was made of division by zero complaints?" I'm not sure, that may be the case. The output of `strings path/to/rg` is \~2MB smaller, so it seems like a lot of it was. Allowing these to be merged presumably also allow functions that contain them to be merged (if the addresses had semantic meaning, then it stands).~~
~~I intend to do some more analysis here, but I got this up as soon as I realized that this attribute was only missing for internal const strings, and all other ones already get it.~~
Edit: The wins are much more marginal, but there's some argument to do this for the sake of consistency.
llvm-wrapper: Pass newly added param to DIBuilder::createStaticMemberType()
This was added in https://github.com/llvm/llvm-project/pull/72234.
DW_TAG_member was the implicit default before.
The LLVM change is quite sinister since due to weakly typed ints and default params, this was still successfully compiling against LLVM but was passing the wrong parameters.
