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Remove delay-binding for Win XP and Vista
The minimum supported Windows version is now Windows 7. Windows XP
and Windows Vista are no longer supported; both are already broken, and
require extra steps to use.
This commit removes the delayed-binding support for Windows API
functions that are present on all supported Windows targets. This has
several benefits: Removes needless complexity. Removes a load and
dynamic call on hot paths in mutex acquire / release. This may have
performance benefits.
* "Drop official support for Windows XP"
https://github.com/rust-lang/compiler-team/issues/378
* "Firefox has ended support for Windows XP and Vista"
https://support.mozilla.org/en-US/kb/end-support-windows-xp-and-vista
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Target stack-probe support configurable finely
This adds capability to configure the target's stack probe support in a
more precise manner than just on/off. In particular now we allow
choosing between always inline-asm, always call or either one of those
depending on the LLVM version.
Note that this removes the ability to turn off the generation of the
stack-probe attribute. This is valid to replace it with inline-asm for all targets because
`probe-stack="inline-asm"` will not generate any machine code on targets
that do not currently support stack probes. This makes support for stack
probes on targets that don't have any right now automatic with LLVM
upgrades in the future.
(This is valid to do based on the fact that clang unconditionally sets
this attribute when `-fstack-clash-protection` is used, AFAICT)
cc #77885
r? `@cuviper`
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Generate metadata by iterating on DefId instead of traversing the HIR tree 1/N
Sample from #80347.
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Various ABI refactorings
This includes changes to the rust abi and various refactorings that will hopefully make it easier to use the abi handling infrastructure of rustc in cg_clif. There are several refactorings that I haven't done. I am opening this draft PR to check that I haven't broken any non x86_64 architectures.
r? `@ghost`
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Add disambiugator to ExpnData
I still need to write a bunch of comments. Opening to see how bad the perf impact is.
cc https://github.com/rust-lang/rust/issues/79560
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Rollup of 15 pull requests
Successful merges:
- #79841 (More clear documentation for NonNull<T>)
- #81072 (PlaceRef::ty: use method call syntax)
- #81130 (Edit rustc_middle::dep_graph module documentation)
- #81170 (Avoid hash_slice in VecDeque's Hash implementation)
- #81243 (mir: Improve size_of handling when arg is unsized)
- #81245 (Update cargo)
- #81249 (Lower closure prototype after its body.)
- #81252 (Add more self-profile info to rustc_resolve)
- #81275 (Fix <unknown> queries and add more timing info to render_html)
- #81281 (Inline methods of Path and OsString)
- #81283 (Note library tracking issue template in tracking issue template.)
- #81285 (Remove special casing of rustdoc in rustc_lint)
- #81288 (rustdoc: Fix visibility of trait and impl items)
- #81298 (replace RefCell with Cell in FnCtxt)
- #81301 (Fix small typo)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Due to macro expansion, its possible to end up with two distinct
`ExpnId`s that have the same `ExpnData` contents. This violates the
contract of `HashStable`, since two unequal `ExpnId`s will end up with
equal `Fingerprint`s.
This commit adds a `disambiguator` field to `ExpnData`, which is used to
force two otherwise-equivalent `ExpnData`s to be distinct.
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Fix small typo
Fractional part of `12.34e56` seems to be incorrectly stated as '45' and not '34'
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replace RefCell with Cell in FnCtxt
small cleanup
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rustdoc: Fix visibility of trait and impl items
Fixes #81274.
r? `@jyn514`
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Note library tracking issue template in tracking issue template.
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Inline methods of Path and OsString
These methods are not generic, and therefore aren't candidates for cross-crate inlining without an `#[inline]` attribute.
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Fix <unknown> queries and add more timing info to render_html
Closes https://github.com/rust-lang/rust/issues/81251.
## Fix `<unknown>` queries
This happened because `alloc_query_strings` was never called.
## Add more timing info to render_html
This still has some issues I'm not sure how to work out:
- `create_renderer` and `renderer_after_krate` aren't shown by default.
I want something like `verbose_generic_activity_with_arg`, but it doesn't exist.
I'm also not sure how to show activities that aren't on by default - I
tried `-Z self-profile -Z self-profile-args=all`, but it didn't show up.
r? `@wesleywiser`
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Add more self-profile info to rustc_resolve
The idea is to help me find out where the time is being spent in compiling the docs for `windows-rs`: https://github.com/microsoft/windows-rs/issues/420#issuecomment-764991646
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Lower closure prototype after its body.
Fixes #79537.
r? `@Mark-Simulacrum`
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Update cargo
5 commits in a73e5b7d567c3036b296fc6b33ed52c5edcd882e..783bc43c660bf39c1e562c8c429b32078ad3099b
2021-01-12 23:45:39 +0000 to 2021-01-20 19:02:26 +0000
- Fix some issues with `cargo doc` and the new feature resolver. (rust-lang/cargo#9077)
- Implement support for rust-version field in project metadata (rust-lang/cargo#8037)
- Fix a bug in Cargo's cyclic dep graph detection (rust-lang/cargo#9075)
- Typo correction: artifcats -> artifacts (rust-lang/cargo#9081)
- Remove stray backtick from doc (rust-lang/cargo#9079)
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mir: Improve size_of handling when arg is unsized
As discussed on Zulip with `@RalfJung.`
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Avoid hash_slice in VecDeque's Hash implementation
Fixes #80303.
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Edit rustc_middle::dep_graph module documentation
This is similar to work approved and then closed in https://github.com/rust-lang/rust/pull/80325 due to a bad rebase.
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PlaceRef::ty: use method call syntax
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More clear documentation for NonNull<T>
Rephrase and hopefully clarify the discussion of covariance in `NonNull<T>` documentation.
I'm very much not an expert so someone should definitely double check the correctness of what I'm saying. At the same time, the new language makes more sense to me, so hopefully it also is more logical to others whose knowledge of covariance basically begins and ends with the [Rustonomicon chapter](https://doc.rust-lang.org/nomicon/subtyping.html).
Related to #48929.
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This avoids each tool having to separately find and call
`self_profile_alloc_strings`.
- Don't compute the global context if it hasn't yet been computed
This avoids giving extraneous errors about unresolved names if an error
occurs during parsing.
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- Show `create_renderer` and `renderer_after_crate` by default
- Don't rewrite `extra_verbose_generic_activity`
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avoid promoting division, modulo and indexing operations that could fail
For division, `x / y` will still be promoted if `y` is a non-zero integer literal; however, `1/(1+1)` will not be promoted any more.
While at it, also see if we can reject promoting floating-point arithmetic (which are [complicated](https://github.com/rust-lang/unsafe-code-guidelines/issues/237) so maybe we should not promote them).
This will need a crater run to see if there's code out there that relies on these things being promoted.
If we can land this, promoteds in `fn`/`const fn` cannot fail to evaluate any more, which should let us do some simplifications in codegen/Miri!
Cc https://github.com/rust-lang/rfcs/pull/3027
Fixes https://github.com/rust-lang/rust/issues/61821
r? `@oli-obk`
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for a type
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return position
Abi::ScalarPair is only ever used for types that don't have a stable
layout anyway so this doesn't break any FFI. It does however reduce the
amount of special casing on the abi outside of the code responsible for
abi specific adjustments to the pass mode.
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Change branching in `iter.skip()`
Optimize branching in `Skip`, which was brought up in #80416.
This assumes that if `next` is called, it's likely that there will be more calls to `next`, and the branch for skip will only be hit once thus it's unlikely to take that path. Even w/o the `unlikely` intrinsic, it compiles more efficiently, I believe because the path where `next` is called is always taken.
It should be noted there are very few places in the compiler where `Skip` is used, so probably won't have a noticeable perf impact.
[New impl](https://godbolt.org/z/85rdj4)
[Old impl](https://godbolt.org/z/Wc74rh)
[Some additional asm examples](https://godbolt.org/z/feKzoz) although they really don't have a ton of difference between them.
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Improve diagnostics when parsing angle args
https://github.com/rust-lang/rust/pull/79266 introduced parsing of generic arguments in associated type constraints, this however resulted in possibly very confusing error messages in cases in which closing angle brackets were missing such as in `Vec<(u32, _, _) = vec![]`, which outputs an incorrectly parsed equality constraint error, as noted by `@cynecx.`
This PR tries to provide better error messages in such cases.
r? `@petrochenkov`
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Split up core/test/iter.rs into multiple files
This PR removes the `// ignore-tidy-filelength` at the top of [iter.rs](https://github.com/rust-lang/rust/blob/04f44fb9232dc960d213d0df4a203c387215a5ff/library/core/tests/iter.rs) by splitting it into several sub files. I have split the file per test, based on what I felt the test was really trying to test.
Addresses issue #60302.
- [associated_util.rs](https://github.com/rust-lang/rust/blob/d29180a8ed2752c5dfa2bca1d28ca05dc9bf6bf1/library/core/tests/iter/associated_util.rs) - For testing the module level functions. (Maybe should be renamed?)
- [collection.rs](https://github.com/rust-lang/rust/blob/d29180a8ed2752c5dfa2bca1d28ca05dc9bf6bf1/library/core/tests/iter/collection.rs) - For testing methods that use the values of all the items in an iterator, and creates one value from them, whether it be a Vec of all the values, or a number that represents the sum.
- [mod.rs](https://github.com/rust-lang/rust/blob/d29180a8ed2752c5dfa2bca1d28ca05dc9bf6bf1/library/core/tests/iter/mod.rs) - For utility structs used in all tests, and other tests I didn't know where to place.
- [range.rs](https://github.com/rust-lang/rust/blob/d29180a8ed2752c5dfa2bca1d28ca05dc9bf6bf1/library/core/tests/iter/range.rs) - For testing ranges.
- [transformation.rs](https://github.com/rust-lang/rust/blob/d29180a8ed2752c5dfa2bca1d28ca05dc9bf6bf1/library/core/tests/iter/transformation.rs) - For testing methods that transform all the values in an iterator.
- [util.rs](https://github.com/rust-lang/rust/blob/d29180a8ed2752c5dfa2bca1d28ca05dc9bf6bf1/library/core/tests/iter/util.rs) - For testing methods that provide utility in more specific use cases.
"Programatically"
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You may have noticed I "Programatically" split up the file. [This is how](https://gist.github.com/danii/a58b3bcafa9faf1c3e4b01ad7495baf4) I managed to do that. 😛 Hope that's fine.
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