Rollup of 14 pull requests
Successful merges:
- #64145 (Target-feature documented as unsafe)
- #65007 (Mention keyword closing policy)
- #65417 (Add more coherence tests)
- #65507 (Fix test style in unused parentheses lint test)
- #65591 (Add long error explanation for E0588)
- #65617 (Fix WASI sleep impl)
- #65656 (Add option to disable keyboard shortcuts in docs)
- #65678 (Add long error explanation for E0728)
- #65681 (Code cleanups following up on #65576.)
- #65686 (refactor and move `maybe_append` )
- #65688 (Add some tests for fixed ICEs)
- #65689 (bring back some Debug instances for Miri)
- #65695 (self-profiling: Remove module names from some event-ids in codegen backend.)
- #65706 (Add missing space in librustdoc)
Failed merges:
r? @ghost
self-profiling: Remove module names from some event-ids in codegen backend.
Event-IDs are not supposed to contain argument values. Event-IDs are the equivalent of function names. Proper support for parameters will be added to self-profiling down the line.
This PR fixes an oversight from https://github.com/rust-lang/rust/pull/64840.
r? @wesleywiser
bring back some Debug instances for Miri
These were erroneously removed in https://github.com/rust-lang/rust/pull/65647, but Miri needs them.
r? @Centril Cc @nnethercote @oli-obk
Add some tests for fixed ICEs
Fixes#41366 from 1.35.0
Fixes#51431 from 1.31.0-nightly (77af31408 2018-10-11) (on my local)
Fixes#52437 from nightly
Fixes#63496 from nightly
r? @Centril
Fix test style in unused parentheses lint test
I think this fixes#63237
I'm not sure if I had to add text after the `//~ ERROR` comments.
This is my first pull request, so I'm open to feedback.
This issues already received one pull request [here](https://github.com/rust-lang/rust/pull/63257) but it was marked as closed for inactivity.
r? @nikomatsakis
Add more coherence tests
I've wrote the missing test cases listed in [this google doc](https://docs.google.com/spreadsheets/d/1WlroTEXE6qxxGvEOhICkUpqguYZP9YOZEvnmEtSNtM0/edit#gid=0)
> The other thing that might be useful is to rename the existing tests so they all fit the new naming scheme we were using.
I'm not entirely sure how to do this. If everything from the google sheet is covered could I just remove the remaining tests in `src/test/ui/coherence` or is there something in there that should remain?
cc #63599
r? @nikomatsakis
Refactor libtest
## Short overview
`libtest` got refactored and splitted into smaller modules
## Description
`libtest` module is already pretty big and hard to understand. Everything is mixed up: CLI, console output, test execution, etc.
This PR splits `libtest` into smaller logically-consistent modules, makes big functions smaller and more readable, and adds more comments, so `libtest` will be easier to understand and maintain.
Although there are a lot of changes, all the refactoring is "soft", meaning that no public interfaces were affected and nothing should be broken.
Thus this PR (at least should be) completely backward-compatible.
r? @wesleywiser
cc @Centril
Remove `src/llvm-emscripten` submodule
With #65251 landed there's no need to build two LLVM backends and ship
them with rustc, every target we have now uses the same LLVM backend!
This removes the `src/llvm-emscripten` submodule and additionally
removes all support from rustbuild for building the emscripten LLVM
backend. Multiple codegen backend support is left in place for now, and
this is intended to be an easy 10-15 minute win on CI times by avoiding
having to build LLVM twice.
With #65251 landed there's no need to build two LLVM backends and ship
them with rustc, every target we have now uses the same LLVM backend!
This removes the `src/llvm-emscripten` submodule and additionally
removes all support from rustbuild for building the emscripten LLVM
backend. Multiple codegen backend support is left in place for now, and
this is intended to be an easy 10-15 minute win on CI times by avoiding
having to build LLVM twice.
Rename `ConstValue::Infer(InferConst::Canonical(..))` to `ConstValue::Bound(..)`
It already has the right form, so this is just a renaming. Fixes https://github.com/rust-lang/rust/issues/65655.
r? @eddyb
make is_power_of_two a const function
This makes `is_power_of_two` a const function by using `&` instead of short-circuiting `&&`; Rust supports bitwise `&` for `bool` and short-circuiting is not required in the existing expression.
I don't think this needs a const-hack label as I don't find the changed code less readable, if anything I prefer that it is clearer that short circuiting is not used.
@oli-obk
Change untagged_unions to not allow union fields with drop
This is a rebase of #56440, massaged to solve merge conflicts and make the test suite pass.
Change untagged_unions to not allow union fields with drop
Union fields may now never have a type with attached destructor. This for example allows unions to use arbitrary field types only by wrapping them in `ManuallyDrop` (or similar).
The stable rule remains, that union fields must be `Copy`. We use the new rule for the `untagged_union` feature.
Tracking issue: https://github.com/rust-lang/rust/issues/55149
Fix `canonicalize_const_var` leaking inference variables
Fixes#61338Fixes#61516Fixes#62536Fixes#64087Fixes#64863Fixes#65623
I added regression tests for all these issues apart from #64863, which is very similar to #61338.
r? @varkor
[mir-opt] Improve SimplifyLocals pass so it can remove unused consts
The `ConstProp` can cause many locals to be initialized to a constant
value and then never read from. `ConstProp` can also evaluate ZSTs into
constant values. Previously, many of these would be removed by other
parts of the MIR optimization pipeline. However, evaluating ZSTs
(especially `()`) into constant values defeated those parts of the
optimizer and so in a2e3ed5, I added a
hack to `ConstProp` that skips evaluating ZSTs to avoid that regression.
This commit changes `SimplifyLocals` so that it doesn't consider writes
of const values to a local to be a use of that local. In doing so,
`SimplifyLocals` is able to remove otherwise unused locals left behind
by other optimization passes (`ConstProp` in particular).
r? @oli-obk
