Fix default/minimum deployment target for Aarch64 simulator targets
The minimum that `rustc` encoded did not match [the version in Clang](https://github.com/llvm/llvm-project/blob/llvmorg-18.1.8/llvm/lib/TargetParser/Triple.cpp#L1900-L1932), and that meant that that when linking, Clang ended up bumping the version. See https://github.com/rust-lang/rust/issues/129432 for more motivation behind this change.
Specifically, this PR sets the correct deployment target of the following targets:
- `aarch64-apple-ios-sim` from 10.0 to 14.0
- `aarch64-apple-tvos-sim` from 10.0 to 14.0
- `aarch64-apple-watchos-sim` from 5.0 to 7.0
- `aarch64-apple-ios-macabi` from 13.1 to 14.0
I have chosen not to document the `-sim` changes in the platform support docs, as it is fundamentally uninteresting; the normal targets (e.g. `aarch64-apple-ios`) still have the same deployment target, and that's what developers should actually target.
r? compiler
CC `@BlackHoleFox`
Running the stage0 target sanity check on the newly built compiler can result
in errors and incorrect assumptions.
Signed-off-by: onur-ozkan <work@onurozkan.dev>
Add -Z small-data-threshold
This flag allows specifying the threshold size above which LLVM should not consider placing small objects in a `.sdata` or `.sbss` section.
Support is indicated in the target options via the
small-data-threshold-support target option, which can indicate either an
LLVM argument or an LLVM module flag. To avoid duplicate specifications
in a large number of targets, the default value for support is
DefaultForArch, which is translated to a concrete value according to the
target's architecture.
miri: fix overflow detection for unsigned pointer offset
This is the Miri part of https://github.com/rust-lang/rust/pull/130229. This is already UB in codegen so we better make Miri detect it; updating the docs may take time if we have to follow some approval process, but let's make Miri match reality ASAP.
r? ``@scottmcm``
refactor merge base logic and fix `x fmt`
When remote upstream is not configured, using [get_git_modified_files](38e3a5771c/src/tools/build_helper/src/git.rs (L114)) to find modified files fails because [get_rust_lang_rust_remote](38e3a5771c/src/tools/build_helper/src/git.rs (L46-L48)) can not resolve "rust-lang/rust" from the git output. The changes in this PR makes bootstrap to find the latest bors commit, treating it as the "closest upstream commit" so that the change tracker logic can use it to find the diffs.
In addition, [skips formatting](e392454483) if there are no modified files.
Fixes#130147
This flag allows specifying the threshold size above which LLVM should
not consider placing small objects in a .sdata or .sbss section.
Support is indicated in the target options via the
small-data-threshold-support target option, which can indicate either an
LLVM argument or an LLVM module flag. To avoid duplicate specifications
in a large number of targets, the default value for support is
DefaultForArch, which is translated to a concrete value according to the
target's architecture.
It's very rare for developers to need to modify LLVM,
so "if-unchanged" isn't a good default since it fetches
the LLVM submodule to track changes.
Signed-off-by: onur-ozkan <work@onurozkan.dev>
miri-test-libstd: add missing BOOTSTRAP_ARGS
Note sure if BOOTSTRAP_ARGS will make any difference here, but all the other x.py invocations have it and I did not *deliberately* leave it away when I added these, so... probably best to add them?
Also don't unnecessarily set BOOTSTRAP_SKIP_TARGET_SANITY while we are at it.
rustdoc rfc#3662 changes under unstable flags
* All new functionality is under unstable options
* Adds `--merge=shared|none|finalize` flags
* Adds `--parts-out-dir=<crate specific directory>` for `--merge=none`
to write cross-crate info file for a single crate
* Adds `--include-parts-dir=<previously specified directory>` for
`--merge=finalize` to write cross-crate info files
* `tests/rustdoc/` tests for the new flags
Rollup of 11 pull requests
Successful merges:
- #128316 (Stabilize most of `io_error_more`)
- #129473 (use `download-ci-llvm=true` in the default compiler config)
- #129529 (Add test to build crates used by r-a on stable)
- #129981 (Remove `serialized_bitcode` from `LtoModuleCodegen`.)
- #130094 (Inform the solver if evaluation is concurrent)
- #130132 ([illumos] enable SIGSEGV handler to detect stack overflows)
- #130146 (bootstrap `naked_asm!` for `compiler-builtins`)
- #130149 (Helper function for formatting with `LifetimeSuggestionPosition`)
- #130152 (adapt a test for llvm 20)
- #130162 (bump download-ci-llvm-stamp)
- #130164 (move some const fn out of the const_ptr_as_ref feature)
r? `@ghost`
`@rustbot` modify labels: rollup
Add test to build crates used by r-a on stable
r? ````````@Kobzol````````
I've opened other PRs for this one to work and they've landed already. I cherry-picked your commit, and added the last remaining pieces we needed I think.
use `download-ci-llvm=true` in the default compiler config
1ca2708e77 made it so that the `src/llvm-project` submodule has to be checkout for `download-ci-llvm = "if-unchanged"` to know if the submodule has been changed, but that is not required, if the submodule hasn't been checkout it cannot have been modified.
~~This PR restore the previous behavior by only updating the submodule if it has already been checkout.~~
This PR makes `download-ci-llvm = true` check if CI llvm is available and make it the default for the compiler profile, as to prevent unnecessarily checking out `src/llvm-project` with `"if-unchanged"`.
r? `````@onur-ozkan`````
interpret: make typed copies lossy wrt provenance and padding
A "typed copy" in Rust can be a lossy process: when copying at type `usize` (or any other non-pointer type), if the original memory had any provenance, that provenance is lost. When copying at pointer type, if the original memory had partial provenance (i.e., not the same provenance for all bytes), that provenance is lost. When copying any type with padding, the contents of padding are lost.
This PR equips our validity-checking pass with the ability to reset provenance and padding according to those rules. Can be reviewed commit-by-commit. The first three commits are just preparation without any functional change.
Fixes https://github.com/rust-lang/miri/issues/845
Fixes https://github.com/rust-lang/miri/issues/2182
rustdoc: use strategic boxing to shrink `clean::Item`
* `inline_stmt_id` is never a cross-crate DefId, so save space by not storing it.
* Instead of two inner boxes for `Item`, use one.
Rollup of 9 pull requests
Successful merges:
- #129929 (`rustc_mir_transform` cleanups, round 2)
- #130022 (Dataflow/borrowck lifetime cleanups)
- #130064 (fix ICE in CMSE type validation)
- #130067 (Remove redundant check in `symlink_hard_link` test)
- #130131 (Print a helpful message if any tests were skipped for being up-to-date)
- #130137 (Fix ICE caused by missing span in a region error)
- #130153 (use verbose flag as a default value for `rust.verbose-tests`)
- #130154 (Stabilize `char::MIN`)
- #130158 (Update books)
r? `@ghost`
`@rustbot` modify labels: rollup
Update books
## rust-lang/edition-guide
1 commits in eeba2cb9c37ab74118a4fb5e5233f7397e4a91f8..b3ca7ade0f87d7e3fb538776defc5b2cc4188172
2024-09-03 22:59:56 UTC to 2024-09-03 22:59:56 UTC
- Rename `static_mut_refs` file to plural
## rust-embedded/book
1 commits in ff5d61d56f11e1986bfa9652c6aff7731576c37d..dbae36bf3f8410aa4313b3bad42e374735d48a9d
2024-09-04 20:49:11 UTC to 2024-09-04 20:49:11 UTC
- Fix small error in c bindings (rust-embedded/book#377)
## rust-lang/reference
6 commits in 0668397076da350c404dadcf07b6cbc433ad3743..687faf9958c52116d003b41dfd29cc1cf44f5311
2024-09-03 20:21:23 UTC to 2024-08-29 01:11:29 UTC
- `asm!`: clarify that `nomem` / `readonly` can access private memory (rust-lang/reference#1598)
- Switch warning blocks to use admonitions (rust-lang/reference#1595)
- dont use stdcall on x86_64 where it is not a valid ABI (rust-lang/reference#1600)
- Add capturing and precise capturing rules (rust-lang/reference#1577)
- Add a prefix to rule HTML IDs (rust-lang/reference#1593)
- Add a description of rule identifiers (rust-lang/reference#1594)
## rust-lang/rust-by-example
2 commits in 859786c5bc99301bbc22fc631a5c2b341860da08..c79ec345f08a1e94494cdc8c999709a90203fd88
2024-09-08 13:24:48 UTC to 2024-09-08 13:24:08 UTC
- Fix typo in conversion/from_into (rust-lang/rust-by-example#1882)
- Corrected x values for example rectangle (rust-lang/rust-by-example#1884)
## rust-lang/rustc-dev-guide
9 commits in fa928a6d19e1666d8d811dfe3fd35cdad3b4e459..0ed9229f5b6f7824b333beabd7e3d5ba4b9bd971
2024-09-09 10:58:45 UTC to 2024-08-31 13:02:08 UTC
- fix some comments (rust-lang/rustc-dev-guide#2059)
- Fix a link and create an implied internal link (rust-lang/rustc-dev-guide#2051)
- link to additional LLVM update PRs (rust-lang/rustc-dev-guide#2055)
- fix/improve rdg contributing howto (rust-lang/rustc-dev-guide#2056)
- fixed the typo (rust-lang/rustc-dev-guide#2058)
- fix typo maker -> marker (thanks `@lholten)` (rust-lang/rustc-dev-guide#2057)
- improve query system documentation (rust-lang/rustc-dev-guide#2041)
- add section on overlap checks (rust-lang/rustc-dev-guide#2042)
- clarify the role of rustc_const_unstable (rust-lang/rustc-dev-guide#2045)
Print a helpful message if any tests were skipped for being up-to-date
When running tests without the `--force-rerun` flag, compiletest will automatically skip any tests that (in its judgement) don't need to be run again since the last time they were run.
This is normally very useful, but can occasionally be confusing, especially in edge-cases where up-to-date checking is not completely accurate (or the test is flaky).
This PR makes bootstrap count the number of tests that were ignored for being up-to-date (via a hard-coded check on the ignore reason), and prints a helpful message when that number is nonzero.
---
Sample output:
```text
test result: ok. 4 passed; 0 failed; 17578 ignored; 0 measured; 0 filtered out; finished in 463.79ms
help: ignored 17295 up-to-date tests; use `--force-rerun` to prevent this
Build completed successfully in 0:00:07
```
