Deprecate the asm! macro in favor of llvm_asm!
Since we will be changing the syntax of `asm!` soon, deprecate it and encourage people to use `llvm_asm!` instead (which preserves the old syntax). This will avoid breakage when `asm!` is changed.
RFC: https://github.com/rust-lang/rfcs/pull/2843
Make the necessary changes to support concurrency in Miri.
This pull request makes the necessary changes to the Rust compiler to allow Miri to support concurrency:
1. Move stack from the interpretation context (`InterpCx`) to machine, so that the machine can switch the stacks when it changes the thread being executed.
2. Add the callbacks that allow the machine to generate fresh allocation ids for each thread local allocation and to translate them back to original allocations when needed. This allows the machine to ensure the property that allocation ids are unique, which allows using a simpler representation of the memory.
r? @oli-obk
cc @RalfJung
Rollup of 4 pull requests
Successful merges:
- #71026 (Fix false "never constructed" warnings for `Self::` variant paths)
- #71310 (Do not show DefId in diagnostics)
- #71317 (miri-unleash test for llvm_asm)
- #71324 (Fix some tests failing in `--pass check` mode)
Failed merges:
r? @ghost
Rollup of 5 pull requests
Successful merges:
- #71107 (Address concerns of weak-into-raw)
- #71188 (Fixed missing trait method suggests incorrect code (self parameter not named "self"). )
- #71300 (Clarify when to use the tracking issue template)
- #71315 (Add example in the alternative in std::mem::transmute docs)
- #71319 (Clean up E0522 explanation)
Failed merges:
r? @ghost
Address concerns of weak-into-raw
This should address the standing concerns in https://github.com/rust-lang/rust/issues/60728#issuecomment-612525616.
I've still left the ability to create a new dangling pointer from `null`, as I feel like this is the natural behaviour to expect, but I'm fine removing that too. I've modified the documentation to allow the `as_ptr` or `into_ptr` to return whatever garbage in case of a dangling pointer. I've also removed the guarantee to be able to do `from_raw(as_ptr)` from the documentation (but it would still work right now).
I've renamed the method and added implementations for `Rc`/`Arc`.
I've also tried if I can just „enable“ unsized types. I believe the current interface is compatible with them. But the inner implementation will be a bit challenging ‒ I can't use the `data_offset` as is used by `Rc` or `Arc` because it AFAIK „touches“ (creates a reference to) the live value of `T` ‒ and in case of `Weak`, it might be completely bogus or already dead ‒ so that would be UB.
`./x.py test tidy` is completely mad on my own system all over the code base :-(. I'll just hope it goes through CI, or will fix as necessary.
Is it OK if I ask @Amanieu for review, as the concerns are from you?
~r @Amanieu
Make `needs_drop` less pessimistic on generators
Generators only have non-trivial drop logic when they may store (in upvars or across yields) a type that does.
This prevents generation of some unnecessary MIR in simple generators. There might be some impact on compile times, but this is probably limited in real-world applications.
~~This builds off of https://github.com/rust-lang/rust/pull/69814 since that contains some fixes that are made relevant by *this* PR (see https://github.com/rust-lang/rust/pull/69814#issuecomment-599147269).~~ (this has been merged)
Maintain chain of derived obligations
When evaluating the derived obligations from super traits, maintain a
reference to the original obligation in order to give more actionable
context in the output.
Continuation (and built on) #69745, subset of #69709.
r? @eddyb
When evaluating the derived obligations from super traits, maintain a
reference to the original obligation in order to give more actionable
context in the output.
Minor improvements to -Zprofile
- `-Zprofile` is broken with codegen units because GCOV assumes that each source file corresponds to one object file. This PR makes `-Zprofile` automatically set codegen units to 1 and gives an error if `-Ccodegen-units=X` is specified on the command line (with `X != 1`).
- The `profiler_builtins` crate is not suitable for `no_std` applications since it contains C code that depends on libc. In such cases a custom implementation of the LLVM gcov API (`llvm_gcov_init`, `llvm_gcda_*`) is needed. This PR adds `-Zno-profiler-runtime` flag which inhibits automatic injection of the `profiler_builtins` crate.
cc @whitequark who implemented the original `-Zprofile` support
miri-unleashed: test that we detect heap allocations
This removes the second-to-last use of `IS_SUPPORTED_IN_MIRI = false`.
r? @ecstatic-morse @oli-obk
submodules: update clippy from 6651c1b9 to 891e1a85
This PR gets `cargo clippy --fix -Zunstable-options` into nightly 🎉
Changes:
````
Polished lint and tests
Added final lint and tests
Added basic lint and tests
fix redundant_pattern_matching lint
add lint futures_not_send
Integrate more idiomatic rust changes.
Fix issue #4892.
cargo dev fmt
Cleanup: Rename 'db' variable to 'diag'
question_mark: don't add `as_ref()` for a call expression
unit_arg suggestion may be incorrect
readme: update to cargo clippy --fix command
CI: performing system upgrade fixes broken apt deps on ubuntu 32bit
Do not lint in macros for match lints
[fix] Minor typo in GH Actions 'clippy_dev'
Reenable rustfmt integration test
Add test to map_flatten with an Option
Lint map_flatten if caller is an Option
Apply suggestions from code review
manually fixing formatting at this point lol
fmt
rename field
revert the damn fmt changes
add some tests
split it up for testing but the merge broke tests
dogfood tasted bad
fix rustfmt issue
boycott manish
check for unstable options
Start work on clippy-fix as subcommand
````
Should be save to rollup since we are in no-toolstate-break week (I also didn't see any breakage when testing the clippy with 28742a114)
Changes:
````
Polished lint and tests
Added final lint and tests
Added basic lint and tests
fix redundant_pattern_matching lint
add lint futures_not_send
Integrate more idiomatic rust changes.
Fix issue #4892.
cargo dev fmt
Cleanup: Rename 'db' variable to 'diag'
question_mark: don't add `as_ref()` for a call expression
unit_arg suggestion may be incorrect
readme: update to cargo clippy --fix command
CI: performing system upgrade fixes broken apt deps on ubuntu 32bit
Do not lint in macros for match lints
[fix] Minor typo in GH Actions 'clippy_dev'
Reenable rustfmt integration test
Add test to map_flatten with an Option
Lint map_flatten if caller is an Option
Apply suggestions from code review
manually fixing formatting at this point lol
fmt
rename field
revert the damn fmt changes
add some tests
split it up for testing but the merge broke tests
dogfood tasted bad
fix rustfmt issue
boycott manish
check for unstable options
Start work on clippy-fix as subcommand
````
Rollup of 6 pull requests
Successful merges:
- #70467 (Use `call` instead of `invoke` for functions that cannot unwind )
- #71070 (rustbuild: Remove stage 0 LLD flavor workaround for MSVC)
- #71167 (big-O notation: parenthesis for function calls, explicit multiplication)
- #71238 (Miri: fix typo)
- #71242 (Format Mailmap To Work With GitHub)
- #71243 (Account for use of `try!()` in 2018 edition and guide users in the right direction)
Failed merges:
r? @ghost
