Rollup of 5 pull requests
Successful merges:
- #124233 (Add `-lmingwex` second time in `mingw_libs`)
- #124318 (ignore generics args in attribute paths)
- #124899 (bootstrap: add comments for the automatic dry run)
- #124904 (reachable computation: extend explanation of what this does, and why)
- #124930 (Make sure we consume a generic arg when checking mistyped turbofish)
r? `@ghost`
`@rustbot` modify labels: rollup
Refactor float `Primitive`s to a separate `Float` type
Now there are 4 of them, it makes sense to refactor `F16`, `F32`, `F64` and `F128` out of `Primitive` and into a separate `Float` type (like integers already are). This allows patterns like `F16 | F32 | F64 | F128` to be simplified into `Float(_)`, and is consistent with `ty::FloatTy`.
As a side effect, this PR also makes the `Ty::primitive_size` method work with `f16` and `f128`.
Tracking issue: #116909
`@rustbot` label +F-f16_and_f128
Display walltime benchmarks with subnanosecond precision
With modern CPUs running at more than one cycle per nanosecond the current precision is insufficient to resolve differences worth several cycles per iteration.
Granted, walltime benchmarks often are noisy but occasionally, especially when no allocations are involved, the difference really is just a few cycles.
example results when benchmarking 1-4 serialized ADD instructions and an empty bench body
```
running 4 tests
test add ... bench: 0.24 ns/iter (+/- 0.00)
test add2 ... bench: 0.48 ns/iter (+/- 0.01)
test add3 ... bench: 0.72 ns/iter (+/- 0.01)
test add4 ... bench: 0.96 ns/iter (+/- 0.01)
test empty ... bench: 0.24 ns/iter (+/- 0.00)
```
Rename `Generics::params` to `Generics::own_params`
I hope this makes it slightly more obvious that `generics.own_params` is insufficient when considering nested items. I didn't actually audit any of the usages, for the record.
r? lcnr
Upgrade pre-built Clang used in MSVC and MacOS builds, move MSVC builds to Server 2022
Fixes#92948
Example working MacOS and Windows builds: <https://github.com/rust-lang/rust/actions/runs/8989360201>
There is a [bug in Clang 18](https://github.com/llvm/llvm-project/pull/81849) that causes issues when building for Arm64 in later parts of the build (specifically `libgit2`). As a workaround, we will still use the pre-built Clang to build LLVM but will use MSVC for the rest of the Arm64 build.
`InferCtxt::next_{ty,const}_var*` all take an origin, but the
`param_def_id` is almost always `None`. This commit changes them to just
take a `Span` and build the origin within the method, and adds new
methods for the rare cases where `param_def_id` might not be `None`.
This avoids a lot of tedious origin building.
Specifically:
- next_ty_var{,_id_in_universe,_in_universe}: now take `Span` instead of
`TypeVariableOrigin`
- next_ty_var_with_origin: added
- next_const_var{,_in_universe}: takes Span instead of ConstVariableOrigin
- next_const_var_with_origin: added
- next_region_var, next_region_var_in_universe: these are unchanged,
still take RegionVariableOrigin
The API inconsistency (ty/const vs region) seems worth it for the
large conciseness improvements.
Tidy check for test revisions that are mentioned but not declared
If a `[revision]` name appears in a test header directive or error annotation, but isn't declared in the `//@ revisions:` header, that is almost always a mistake.
In cases where a revision needs to be temporarily disabled, adding it to an `//@ unused-revision-names:` header will suppress these checks for that name.
Adding the wildcard name `*` to the unused list will suppress these checks for the entire file.
(None of the tests actually use `*`; it's just there because it was easy to add and could be handy as an escape hatch when dealing with other problems.)
---
Most of the existing problems discovered by this check were fairly straightforward to fix (or ignore); the trickiest cases are in `borrowck` tests.
CI: enable arbitrary try builds, take two
Fixed version of https://github.com/rust-lang/rust/pull/124631, which hopefully won't completely break our CI this time 🤦♂️ Sorry once again. Only the last commit is new.
r? `@pietroalbini`
Allow test targets to be set via CLI args
Fixes#3584
I'm not a pro shell script reader as I am a Windows user, but we shall see if the CI script broke.
If a `[revision]` name appears in a test header directive or error annotation,
but isn't declared in the `//@ revisions:` header, that is almost always a
mistake.
In cases where a revision needs to be temporarily disabled, adding it to an
`//@ unused-revision-names:` header will suppress these checks for that name.
Adding the wildcard name `*` to the unused list will suppress these checks for
the entire file.
bors