Allow target specs to disable that attribute.

The error value now includes the type of the success.
The success value now includes the type of the error.

map_or_else is now correctly labelled unstable and points to the
tracking issue on rust-lang/rust

Brings the documentation in line with the BufReader implementation.

Fixes rust-lang#48022.

This change is in response to rust-lang#53125.
The patch makes the feature accepted and removes the tests that tested the
non-accepted status of the feature.

Making it consistent across the board, as most of them already use `$`.

Also split one continues bash run into two, to make it easier see
different runs: one with warning and another with error.

modified to read "the first table overflows into the second, and the second into the first." plus smaller typos

Fixes rust-lang#49807.

Fix a few AMDGPU related issues

* AMDGPU ignores `noinline` and sadly doesn't clear the attribute when it slaps `alwaysinline` on everything,
* an AMDGPU related load bit range metadata assertion,
* I didn't enable the `amdgpu` component in the `librustc_llvm` build script,
* Add AMDGPU call abi info.

Document .0 to unpack integer from Wrapping

…xcrichton

Implemented map_or_else for Result<T, E>

Fulfills rust-lang#53268
The example is ripped from `Option::map_or_else`, with the types corrected.

A few cleanups and minor improvements to rustc_passes

- prefer `if let` to `match` when only one branch matters
- prefer equality checks to pattern matching
- prefer `is_empty` to `len() == 0`
- collapse a couple of `if` expressions
- rename `label` to `destination` when destructuring `hir::ExprKind::Continue`
- `derive Copy` for `Promotability`
- `impl BitAndAssign` for `Promotability`
- a few formatting fixes
- a few other minor cleanups

Update documentation for fill_buf in std::io::BufRead

Brings the documentation in line with the BufReader implementation.

Fixes rust-lang#48022.

This is my first PR, and I think the `E-easy` label is very cool, as so is the practice of describing the fix but leaving it for someone else; it really makes it a lot less intimidating to get started with something!

`&CStr`, not `CStr`, is the counterpart of `&str`

Stabilization change for mod.rs

This change is in response to rust-lang#53125.
The patch makes the feature accepted and removes the tests that tested the
non-accepted status of the feature.

docs: Use dollar sign for all bash prompts

Making it consistent across the board, as most of them already use `$`.

Also split one continues bash run into two, to make it easier see
different runs: one with warning and another with error.

simplify ordering for Kind

Missed from rust-lang#50930

r? @eddyb

Remove documentation about proc_macro being bare-bones

A large chunk of useful API surface area is stabilizing in Rust 1.29. We no longer have a commitment to expand the API over time as much as implied by these comments.

r? @alexcrichton

…etMisdreavus

rustdoc: Remove generated blanket impls from trait pages

rust-lang#53801 only deduped the generated blanket impls but they shouldn't be displayed at all because the original blanket impl is already in the "Implementors" section. This also removes the impls from the sidebar.

Fixes rust-lang#53689

r? @QuietMisdreavus

…=Manishearth

Reexport CheckLintNameResult

Make the enum `CheckLintNameResult` public, so that lint tools (aka Clippy) can use it together with [`LintStore::check_lint_name`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc/lint/struct.LintStore.html#method.check_lint_name), to handle the case that a scoped `tool_lint` doesn't exist in the tool.

This is currently not handled by the compiler:
https://github.com/rust-lang/rust/blob/595345419d12c3ea860151df52f78744a31bafff/src/librustc/lint/levels.rs#L309-L314

Needed for rust-lang/rust-clippy#3161

r? @Manishearth

…acrum

Fix typos in libstd hash map

modified growth algo description to read "the first table overflows into the second, and the second into the first." plus smaller typos

…alexcrichton

Update LLVM to fix GlobalISel dbg.declare

Fixes rust-lang#49807.

…278, r=wesleywiser

Recover proper regression test for issue rust-lang#16278.

Spawned from my note rust-lang#19955 (comment)