This stabilizes a subset of the `-Clink-self-contained` components on x64 linux:
the rust-lld opt-out.
The opt-in is not stabilized, as interactions with other stable flags require
more internal work, but are not needed for stabilizing using rust-lld by default.
Similarly, since we only switch to rust-lld on x64 linux, the opt-out is
only stabilized there. Other targets still require `-Zunstable-options`
to use it.
This stabilizes a subset of the `-Clinker-features` components on x64 linux:
the lld opt-out.
The opt-in is not stabilized, as interactions with other stable flags require
more internal work, but are not needed for stabilizing using rust-lld by default.
Similarly, since we only switch to rust-lld on x64 linux, the opt-out is
only stabilized there. Other targets still require `-Zunstable-options`
to use it.
Inspired by <https://github.com/rust-lang/rust/pull/138759#discussion_r2156375342> where I noticed that we were nearly at this point, plus the comments I was writing in 143410 that reminded me a type-dependent `true` is fine.
This PR splits the `OperandRef::builder` logic out to a separate type, with the updates needed to handle SIMD as well. In doing so, that makes the existing `Aggregate` path in `codegen_rvalue_operand` capable of handing SIMD values just fine.
As a result, we no longer need to do layout calculations for aggregate result types when running the analysis to determine which things can be SSA in codegen.
const-block-as-pattern: do not refer to no-longer-existing nightly feature
Surely everyone who used this nightly feature has fixed their code by now. So let's not confused people on stable that try to use a const block as a pattern by referring to some dead nightly feature.
Fix wrong cache event query key
I messed this up in https://github.com/rust-lang/rust/pull/142978. It is only an issue if someone enables the event manually, which almost no-one does, so it could take a while before we found it :D Luckily I noticed it while re-reading the PR.
r? `@oli-obk`
Point to correct argument in Func Call when Self type fails trait bound
Fixesrust-lang/rust#143336
When a trait bound fails due to the `Self` type parameter, `adjust_fulfillment_errors` now correctly points to the corresponding function argument instead of incorrectly pointing to other arguments. This is because `Call` may also need to handle the `self` parameter, and not just `MethodCall` needs to be handled, as rust-lang/rust#143336.
r? compiler
Do not suggest borrow that is already there in fully-qualified call
When encountering `&str::from("value")` do not suggest `&&str::from("value")`.
Fix#132041.
Allow custom default address spaces and parse `p-` specifications in the datalayout string
Some targets, such as CHERI, use as default an address space different from the "normal" default address space `0` (in the case of CHERI, [200 is used](https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-877.pdf)). Currently, `rustc` does not allow to specify custom address spaces and does not take into consideration [`p-` specifications in the datalayout string](https://llvm.org/docs/LangRef.html#langref-datalayout).
This patch tries to mitigate these problems by allowing targets to define a custom default address space (while keeping the default value to address space `0`) and adding the code to parse the `p-` specifications in `rustc_abi`. The main changes are that `TargetDataLayout` now uses functions to refer to pointer-related informations, instead of having specific fields for the size and alignment of pointers in the default address space; furthermore, the two `pointer_size` and `pointer_align` fields in `TargetDataLayout` are replaced with an `FxHashMap` that holds info for all the possible address spaces, as parsed by the `p-` specifications.
The potential performance drawbacks of not having ad-hoc fields for the default address space will be tested in this PR's CI run.
r? workingjubilee
compiler: Deduplicate `must_emit_unwind_tables()` comments
There is one comment at a call site and one comment in the function definition that are mostly saying the same thing. Fold the call site comment into the function definition comment to reduce duplication.
There are actually some inaccuracies in the comments but let's deduplicate before we address the inaccuracies.
mbe: Refactors and function extractions in `compile_declarative_macro`
These refactors help pave the way for parsing attribute rules.
Best reviewed commit-by-commit.
- **mbe: Simplify compile_declarative_macro by factoring out some variables**
- **mbe: Factor out a helper to check an LHS**
- **mbe: Factor out a helper to check for unexpected EOF in definition**
- **mbe: Clarify comments about error handling in `compile_declarative_macro`**
Dont resolve instance of root in `mir_callgraph_cyclic`
`Instance::try_resolve` on a default trait body method will always fail, since it's still possible to further substitute. This leads to a cycle, since in `tests/mir-opt/inline_default_trait_body.rs`, both `Trait::a` and `Trait::b` need to consider the other to be cyclical, but since we couldn't resolve a body, we'd just consider *nothing* to be cyclical.
The root instance we care about when computing `mir_callgraph_cyclic` is trivial to compute (it's just `InstanceKind::Item`), so just replace it with a call to `Instance::new_raw`.
r? `@cjgillot` `@oli-obk`
Fixesrust-lang/rust#143534
interpret: rename StackPopCleanup
The name `StackPopCleanup` stopped making sense a long time ago IMO -- in the common case, it has nothing to do with "cleanup", and everything with where the program should jump next. If we didn't have unwinding this would be just the return block, but given that we do have unwinding I figured maybe "continuation" would be a good name. This comes up in [continuation-passing style](https://en.wikipedia.org/wiki/Continuation-passing_style) and refers to where the program will *continue* when a function is done. So from a PL perspective it is the most fitting term I think -- but it may be too jargony.
r? `@oli-obk` what do you think?
Move `stable_mir` back to its own crate
We've finished the refactoring, so it's time to move `stable_mir` back to its own crate.
This PR leaves an empty `rustc_internal` module with a `#[deprecated]` attribute in `rustc_smir` to let users know we just moved it to `stable_mir`.
Fix short linker error output
This PR does 2 things:
- It removes the braces when there's a single element. This is required since brace expansion (at least in bash and zsh) only triggers if there's at least 2 elements.
- It removes the extra `.rlib` suffixes of the elements. See https://github.com/rust-lang/rust/pull/135707#discussion_r2185212393 for context.
Running `cargo +stage1 build` on the following program:
```rust
unsafe extern "C" {
fn foo() -> libc::c_int;
}
fn main() {
let x = unsafe { foo() } as u32;
// println!("{}", data_encoding::BASE64.encode(&x.to_le_bytes()));
}
```
Gives the following diff before and after the PR:
```diff
-/tmp/foo/target/debug/deps/{liblibc-faf416f178830595.rlib}.rlib
+/tmp/foo/target/debug/deps/liblibc-faf416f178830595.rlib
```
Running on the same program with the additional dependency, we get the following diff:
```diff
-/tmp/foo/target/debug/deps/{liblibc-faf416f178830595.rlib,libdata_encoding-84bb5aadfa9e8839.rlib}.rlib
+/tmp/foo/target/debug/deps/{liblibc-faf416f178830595,libdata_encoding-84bb5aadfa9e8839}.rlib
```
Only work-steal in the main loop for rustc_thread_pool
This PR is a replica of <https://github.com/rust-lang/rustc-rayon/pull/12> that only retained work-steal in the main loop for rustc_thread_pool.
r? `@oli-obk`
cc `@SparrowLii` `@Zoxc` `@cuviper`
Updates rust-lang/rust#113349
When a trait bound fails due to the Self type parameter, adjust_fulfillment_errors
now correctly points to the corresponding function argument instead of incorrectly
pointing to other arguments.
Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
There is one comment at a call site and one comment in the function
definition that are mostly saying the same thing. Fold the call site
comment into the function definition comment to reduce duplication.
There are actually some inaccuracies in the comments but let's
deduplicate before we address the inaccuracies.
