Rollup of 8 pull requests

Successful merges:

 - rust-lang#125897 (from_ref, from_mut: clarify documentation)
 - rust-lang#128207 (improve error message when `global_asm!` uses `asm!` options)
 - rust-lang#128241 (Remove logic to suggest clone of function output)
 - rust-lang#128259 ([illumos/solaris] set MSG_NOSIGNAL while writing to sockets)
 - rust-lang#128262 (Delete `SimplifyArmIdentity` and `SimplifyBranchSame` tests)
 - rust-lang#128266 (update `rust.channel` default value documentation)
 - rust-lang#128267 (Add rustdoc GUI test to check title with and without search)
 - rust-lang#128271 (Disable jump threading of float equality)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of rust-lang#128241 - compiler-errors:clone-sugg, r=jieyouxu

Remove logic to suggest clone of function output

I can't exactly tell, but I believe that this suggestion is operating off of a heuristic that the lifetime of a function's input is correlated with the lifetime of a function's output in such a way that cloning would fix an error. I don't think that actually manages to hit the bar of "actually provides useful suggestions" most of the time.

Specifically, I've hit false-positives due to this suggestion *twice* when fixing ICEs in the compiler, so I don't think it's worthwhile having this logic around. Neither of the two affected UI tests are actually fixed by the suggestion.

…=estebank

Peel off explicit (or implicit) deref before suggesting clone on move error in borrowck, remove some hacks

Also remove a heck of a lot of weird hacks in `suggest_cloning` that I don't think we should have around.

I know this regresses tests, but I don't believe most of these suggestions were accurate, b/c:
1. They either produced type errors (e.g. turning `&x` into `x.clone()`)
2. They don't fix the issue
3. They fix the issue ostensibly, but introduce logic errors (e.g. cloning a `&mut Option<T>` to then `Option::take` out...)

Most of the suggestions are still wrong, but they're not particularly *less* wrong IMO.

Stacked on top of rust-lang#128241, which is an "obviously worth landing" subset of this PR.

r? estebank

Rollup merge of rust-lang#128244 - compiler-errors:move-clone-sugg, r=estebank

Peel off explicit (or implicit) deref before suggesting clone on move error in borrowck, remove some hacks

Also remove a heck of a lot of weird hacks in `suggest_cloning` that I don't think we should have around.

I know this regresses tests, but I don't believe most of these suggestions were accurate, b/c:
1. They either produced type errors (e.g. turning `&x` into `x.clone()`)
2. They don't fix the issue
3. They fix the issue ostensibly, but introduce logic errors (e.g. cloning a `&mut Option<T>` to then `Option::take` out...)

Most of the suggestions are still wrong, but they're not particularly *less* wrong IMO.

Stacked on top of rust-lang#128241, which is an "obviously worth landing" subset of this PR.

r? estebank