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remove obsolete ld64 option #85956

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remove obsolete ld64 option #85956

wants to merge 39 commits into from

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tschuett
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@tschuett tschuett commented Jun 3, 2021

 -m          Don't treat multiple definitions as an error.  This is no longer supported. This option is obsolete.

Fix a part of #85938

roxelo and others added 30 commits May 27, 2021 17:47
This piece of code checks that there are exaclty two variants, one having
exactly one field, the other having exactly zero fields. If any of these
conditions is violated, it returns `None`. Otherwise it assigns that one
field's ty to `field_ty`.

Instead of fiddling with indices and length checks explicitly, use pattern
matching to simplify this.
This ends up disabling frame pointer elimination on aarch64_apple_darwin
which matches what clang does by default along with the
aarch64_apple_ios and x86_64_apple_darwin targets.

Further, the Apple docs "Writing ARM64 Code for Apple Platforms" has a section
called "Respect the Purpose of Specific CPU Registers" which
specifically calls out the frame pointer register (x29):

   The frame pointer register (x29) must always address a valid frame
   record. Some functions — such as leaf functions or tail calls — may
   opt not to create an entry in this list As a result, stack traces
   are always meaningful, even without debug information.

Other platforms are updated to not override the default.
Stabilize `vecdeque_binary_search`

This PR stabilizes the feature `vecdeque_binary_search` as tracked in #78021.

The tracking issue has not received any comments for the past 5 months, and concerns have been raised neither in the RFC rust-lang/rfcs#2997 nor in the tracking issue #78021.
Turn off frame pointer elimination on all Apple platforms.

This ends up disabling frame pointer elimination on aarch64_apple_darwin
which matches what clang does by default along with the
aarch64_apple_ios and x86_64_apple_darwin targets.

Further, the Apple docs "Writing ARM64 Code for Apple Platforms" has a section
called "Respect the Purpose of Specific CPU Registers" which
specifically calls out the frame pointer register (x29):

   The frame pointer register (x29) must always address a valid frame
   record. Some functions — such as leaf functions or tail calls — may
   opt not to create an entry in this list As a result, stack traces
   are always meaningful, even without debug information.

Other platforms are updated to not override the default.
Fix issue 85435 by restricting Fake Read precision

This PR fixes the root bug of issue #85435 by restricting Fake Read precision in closures and removing the feature gate introduced in PR #85564. More info [here](#85561 (comment)) and [here](#85561 (comment)).

Closes #85561

r? ``@nikomatsakis``
Clarify meaning of MachineApplicable suggestions.

This documents the meaning of MachineApplicable in case of multiple suggestions, as described in #53934 (comment)

r? ``@nikomatsakis``
Intra doc link-ify a reference to a function
convert assertion on rvalue::threadlocalref to delay bug

Closes #85768
r? ``@oli-obk``
…ult, r=petrochenkov

Add test for forward declared const param defaults
… r=Mark-Simulacrum

Update I-unsound label for triagebot

Following the remaming of the `I-unsound` label (removing the space and the emoji) as discussed [on Zulip](https://rust-lang.zulipchat.com/#narrow/stream/122651-general/topic/A.20way.20to.20self-label.20soundness.20issues.3F/near/240962907) (or [in the archive](https://zulip-archive.rust-lang.org/122651general/88362Awaytoselflabelsoundnessissues.html#240962907)), this change of the `triagebot.toml` is necessary to keep the automatic `I-prioritize` flagging.
Use pattern matching instead of checking lengths explicitly

This piece of code checks that there are exaclty two variants, one having
exactly one field, the other having exactly zero fields. If any of these
conditions is violated, it returns `None`. Otherwise it assigns that one
field's ty to `field_ty`.

Instead of fiddling with indices and length checks explicitly, use pattern
matching to simplify this.

`@rustbot` modify labels +C-cleanup +T-compiler
Avoid a clone of output_filenames.

Part of #85153
Update cargo

10 commits in e931e4796b61de593aa1097649445e535c9c7ee0..0cecbd67323ca14a7eb6505900d0d7307b00355b
2021-05-24 16:17:27 +0000 to 2021-06-01 20:09:13 +0000
- Configure hosts separately from targets when --target is specified. (rust-lang/cargo#9322)
- Add some validation to rustc-link-arg (rust-lang/cargo#9523)
- Implement suggestions for unknown features in workspace (rust-lang/cargo#9420)
- Extract common `make_dep_path` to cargo_util (rust-lang/cargo#9529)
- Add a note about rustflags compatibility. (rust-lang/cargo#9524)
- Consolidate doc collision detection. (rust-lang/cargo#9526)
- Add `--depth` option for `cargo-tree` (rust-lang/cargo#9499)
- `cargo tree -e no-proc-macro` to hide procedural macro dependencies (rust-lang/cargo#9488)
- Update to semver 1.0.0 (rust-lang/cargo#9508)
- Update tar dependency to 0.4.35 (rust-lang/cargo#9517)
JohnTitor and others added 4 commits June 3, 2021 14:35
Rollup of 13 pull requests

Successful merges:

 - #83362 (Stabilize `vecdeque_binary_search`)
 - #85706 (Turn off frame pointer elimination on all Apple platforms. )
 - #85724 (Fix issue 85435 by restricting Fake Read precision)
 - #85852 (Clarify meaning of MachineApplicable suggestions.)
 - #85877 (Intra doc link-ify a reference to a function)
 - #85880 (convert assertion on rvalue::threadlocalref to delay bug)
 - #85896 (Add test for forward declared const param defaults)
 - #85897 (Update I-unsound label for triagebot)
 - #85900 (Use pattern matching instead of checking lengths explicitly)
 - #85911 (Avoid a clone of output_filenames.)
 - #85926 (Update cargo)
 - #85934 (Add `Ty::is_union` predicate)
 - #85935 (Validate type of locals used as indices)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@rust-highfive
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @jackh726 (or someone else) soon.

If any changes to this PR are deemed necessary, please add them as extra commits. This ensures that the reviewer can see what has changed since they last reviewed the code. Due to the way GitHub handles out-of-date commits, this should also make it reasonably obvious what issues have or haven't been addressed. Large or tricky changes may require several passes of review and changes.

Please see the contribution instructions for more information.

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jun 3, 2021
@jackh726
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jackh726 commented Jun 3, 2021

I don't really have sufficient background here to approve this myself. But also not sure who would be good to review.

@rust-log-analyzer

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@tschuett tschuett closed this Jun 4, 2021
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