ConstProp into PlaceElem::Index.
Noticed this while looking at keccak output MIR.
This pass aims to replace `ProjectionElem::Index` with `ProjectionElem::ConstantIndex` during ConstProp.
r? `@ghost`
initial clippy::ref_pattern implementation
This implements a new lint that discourages the use of the `ref` keyword as outlined in #9010. I think there are still some things to improve about this lint, but I need some feedback before I can implement those.
- [x] ~~Maybe it's desirable that a quick fix is listed too, instead of a generic `avoid using the ref keyword` lint.~~
- [x] `let ref x = y` already has a lint (`clippy::toplevel_ref_arg`). This implementation will report this too, so you get two lints for the same issue, which is not great. I don't really know a way around this though.
- [X] The dogfood test is currently failing locally, though I ran `cargo clippy -- -D clippy::all -D clippy::pedantic` and got no output, so I'm not sure why this is.
Any help with these would be greatly appreciated.
fixes#9010
changelog: [`ref_pattern`]: newly added lint
Mark s390x condition code register as clobbered in inline assembly
Various s390x instructions (arithmetic operations, logical operations, comparisons, etc. see also "Condition Codes" section in [z/Architecture Reference Summary](https://www.ibm.com/support/pages/zarchitecture-reference-summary)) modify condition code register `cc`, but AFAIK there is currently no way to mark it as clobbered in `asm!`.
`cc` register definition in LLVM:
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/SystemZ/SystemZRegisterInfo.td#L320
This PR also updates asm_experimental_arch docs in the unstable-book to mention s390x registers.
cc `@uweigand`
r? `@Amanieu`
Remove `identity_future` from stdlib
This function/lang_item was introduced in #104321 as a temporary workaround of future lowering. The usage and need for it went away in #104833.
After a bootstrap update, the function itself can be removed from `std`.
Don't compute trait super bounds unless they're positive
Fixes#111207
The comment is modified to explain the rationale for why we even have this recursive call to supertraits in the first place, which doesn't apply to negative bounds since they don't elaborate at all.
STD support for PSVita
This PR adds std support for `armv7-sony-vita-newlibeabihf` target.
The work here is fairly similar to #95897, just for a different target platform.
This depends on the following pull requests:
rust-lang/backtrace-rs#523rust-lang/libc#3209
Update max_atomic_width of armv7r and armv7_sony_vita targets to 64.
All armv7a and armv7r implementations support `ldrexd`/`strexd`, only armv7m does not.
Rollup of 7 pull requests
Successful merges:
- #110297 (Make `(try_)subst_and_normalize_erasing_regions` take `EarlyBinder`)
- #110827 (Fix lifetime suggestion for type aliases with objects in them)
- #111022 (Use smaller ints for bitflags)
- #111056 (Fix some suggestions where a `Box<T>` is expected.)
- #111262 (Further normalize msvc-non-utf8-ouput)
- #111265 (Make generics_of has_self on RPITITs delegate to the opaque)
- #111323 (Give a more helpful error when running the rustc shim directly)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Make generics_of has_self on RPITITs delegate to the opaque
r? `@compiler-errors`
I couldn't come up with a test case and none of the ones in the `tests` folder is impacted by this change, but I still think is the right thing to do.
Michael, let me know if you have ideas on how to add a test that's affected by this change.
Further normalize msvc-non-utf8-ouput
Fixes#111256 by normalizing this tests down to the essential part so that it only tests for the Unicode output we expect. Also uses a file name that should never occur outside of this test.
Fix some suggestions where a `Box<T>` is expected.
This fixes#111011, and also adds a suggestion for boxing a unit type when a `Box<T>` was expected and an empty block was found.
Fix lifetime suggestion for type aliases with objects in them
Fixes an issue identified in https://github.com/rust-lang/rust/issues/110761#issuecomment-1520678479
This suggestion, like many other borrowck suggestions, are very fragile and there are other ways to trigger strange behavior even after this PR, so this is just a small improvement and not a total rework 💀
Make `(try_)subst_and_normalize_erasing_regions` take `EarlyBinder`
Changes `subst_and_normalize_erasing_regions` and `try_subst_and_normalize_erasing_regions` to take `EarlyBinder<T>` instead of `T`.
(related to #105779)
This was suggested by `@BoxyUwU` in https://github.com/rust-lang/rust/pull/107753#discussion_r1105828139. After changing `type_of` to return `EarlyBinder`, there were several places where the binder was immediately skipped to call `tcx.subst_and_normalize_erasing_regions`, only for the binder to be reconstructed inside of that method.
r? `@BoxyUwU`
enable `rust_2018_idioms` lint group for doctests
With this change, `rust_2018_idioms` lint group will be enabled for compiler/libstd doctests.
Resolves#106086Resolves#99144
Signed-off-by: ozkanonur <work@onurozkan.dev>
We really shouldn't be naming functions `fn check_*` unless they're
doing *typechecking*. It's especially misleading when we're doing this
inside of HIR typeck.
Rename InstCombine to InstSimplify
```
╭ ➜ ben@archlinux:~/rust
╰ ➤ rg -i instcombine
src/doc/rustc-dev-guide/src/mir/optimizations.md
134:may have been misapplied. Examples of this are `InstCombine` and `ConstantPropagation`.
src/ci/docker/host-x86_64/disabled/dist-x86_64-haiku/llvm-config.sh
38: instcombine instrumentation interpreter ipo irreader lanai \
tests/codegen/slice_as_from_ptr_range.rs
4:// min-llvm-version: 15.0 (because this is a relatively new instcombine)
```
r? `@scottmcm`
