Rollup of 8 pull requests #138185
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Rollup of 8 pull requests #138185
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This will help stabilization of lld.
While it shares more than zero code with the SysV x86-32 ABI impl, there is no particular reason to organize wildly different ABIs using if-else in the same function.
For the tests that make use of internal implementation details, we include the module to test using #[path] in alloctests now.
…=cuviper Put the alloc unit tests in a separate alloctests package Same rationale as rust-lang#135937. This PR has some extra complexity though as a decent amount of tests are testing internal implementation details rather than the public api. As such I opted to include the modules containing the types under test using `#[path]` into the alloctests package. This means that those modules still need `#[cfg(test)]`, but the rest of liballoc no longer need it.
Add verbatim linker to AIXLinker This adds support for the "verbatim" native link modifier on AIX, will successfully pass the `native-link-modifier-verbatim-linker test case`
…pl, r=jieyouxu compiler: factor Windows x86-32 ABI impl into its own file While it shares more than zero code with the SysV x86-32 ABI impl, there is no particular reason to organize wildly different ABIs using if-else in the same function.
self-contained linker: conservatively default to `-znostart-stop-gc` on x64 linux To help stabilization, this PR disables an LLD optimization on x64 linux with respect to `--gc-sections` and encapsulation symbols: it will reduce the number of crates needing to opt-out of lld due to this bfd / lld difference. For example, all the people using [linkme](https://github.com/dtolnay/linkme), which [doesn't work with lld](dtolnay/linkme#63) or on nightly, need to disable lld. More information about all this, and the historical differences, can be found in: - https://maskray.me/blog/2021-01-31-metadata-sections-comdat-and-shf-link-order - https://lld.llvm.org/ELF/start-stop-gc This optimization has [no visible impact](rust-lang#137685 (comment)) on our benchmarks, so we can use it by default and have a safer/more conservative starting point to remove friction during migration. We can them emit an FCW for the cases where lld detects reliance on encapsulation symbols without `-znostart-stop-gc`, and then revert back to lld's default after a while. No one compiling on nightly relies on this difference, obviously, so doing an FCW is not necessary until after lld is used on stable. I've tested that this correctly links on `linkme` examples. I've also quickly tried to crate an rmake test but the setup with encapsulation symbols is annoying to reproduce: a few link section/name attributes is not enough, we also need to collect symbols between the encapsulation symbols, without referencing them in code, for `-znostart-stop-gc` to only impact this... It should of course be doable though, maybe ```@Kobzol``` will look into it if they have time. r? ```@petrochenkov```
atomic: clarify that failing conditional RMW operations are not 'writes' Fixes rust-lang#136669 r? `@Amanieu` Cc `@rust-lang/opsem` `@chorman0773` `@gnzlbg` `@briansmith`
…tty, r=jdonszelmann Improve `-Zunpretty=hir` for parsed attrs 0. Rename `print_something` to `should_render` to make it distinct from `print_attribute` in that it doesn't print anything, it's just a way to probe if a type renders anything. 1. Fixes a few bugs in the `PrintAttribute` derive. Namely, the `__printed_anything` variable was entangled with the `should_render` call, leading us to always render field names but never render commas. 2. Remove the outermost `""` from the attr. 3. Debug print `Symbol`s. I know that this is redundant for some parsed attributes, but there's no good way to distinguish symbols that are ident-like and symbols which are cooked string literals. We could perhaps *conditionally* to fall back to a debug printing if the symbol doesn't match an ident? But seems like overkill. Based on rust-lang#138060, only review the commits not in that one.
setTargetTriple now accepts Triple rather than string llvm/llvm-project#129868 updated `setTargetTriple`
…e-impl, r=oli-obk Delay bug for negative auto trait rather than ICEing Fixes rust-lang#138149 r? oli-obk
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…mpiler-errors Rollup of 8 pull requests Successful merges: - rust-lang#136642 (Put the alloc unit tests in a separate alloctests package) - rust-lang#137337 (Add verbatim linker to AIXLinker) - rust-lang#137363 (compiler: factor Windows x86-32 ABI impl into its own file) - rust-lang#137685 (self-contained linker: conservatively default to `-znostart-stop-gc` on x64 linux) - rust-lang#138000 (atomic: clarify that failing conditional RMW operations are not 'writes') - rust-lang#138063 (Improve `-Zunpretty=hir` for parsed attrs) - rust-lang#138137 (setTargetTriple now accepts Triple rather than string) - rust-lang#138173 (Delay bug for negative auto trait rather than ICEing) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
-znostart-stop-gcon x64 linux #137685 (self-contained linker: conservatively default to-znostart-stop-gcon x64 linux)-Zunpretty=hirfor parsed attrs #138063 (Improve-Zunpretty=hirfor parsed attrs)r? @ghost
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