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Auto merge of #133423 - jieyouxu:rollup-m3gyoz6, r=jieyouxu

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Rollup of 6 pull requests

Successful merges:

 - #132730 (std: allow after-main use of synchronization primitives)
 - #133105 (only store valid proc macro item for doc link)
 - #133260 (Constify the `Deref`/`DerefMut` traits, too)
 - #133297 (Remove legacy bitcode for iOS)
 - #133298 (Mention that std::fs::remove_dir_all fails on files)
 - #133384 (add a test for target-feature-ABI warnings in closures and when calling extern fn)

r? `@ghost`
`@rustbot` modify labels: rollup
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bors
2024-11-24 23:17:56 +00:00
parent 481b5fadd7 c50e19b69c
commit 28fc2ba714
26 changed files with 269 additions and 120 deletions
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src/doc/rustc/src/codegen-options/index.md
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@@ -119,17 +119,14 @@ files. It takes one of the following values:
* `n`, `no`, `off` or `false`: omit bitcode from rlibs.
LLVM bitcode is required when rustc is performing link-time optimization (LTO).
It is also required on some targets like iOS ones where vendors look for LLVM
bitcode. Embedded bitcode will appear in rustc-generated object files inside of
a section whose name is defined by the target platform. Most of the time this is
`.llvmbc`.
Embedded bitcode will appear in rustc-generated object files inside of a section
whose name is defined by the target platform. Most of the time this is `.llvmbc`.
The use of `-C embed-bitcode=no` can significantly improve compile times and
reduce generated file sizes if your compilation does not actually need bitcode
(e.g. if you're not compiling for iOS or you're not performing LTO). For these
reasons, Cargo uses `-C embed-bitcode=no` whenever possible. Likewise, if you
are building directly with `rustc` we recommend using `-C embed-bitcode=no`
whenever you are not using LTO.
(e.g. if you're not performing LTO). For these reasons, Cargo uses `-C embed-bitcode=no`
whenever possible. Likewise, if you are building directly with `rustc` we recommend
using `-C embed-bitcode=no` whenever you are not using LTO.
If combined with `-C lto`, `-C embed-bitcode=no` will cause `rustc` to abort
at start-up, because the combination is invalid.