…rors

custom mir: make it clear what the return block is

Custom MIR recently got support for specifying the "unwind action", so now there's two things coming after the actual call part of `Call` terminators. That's not very self-explaining so I propose we change the syntax to imitate keyword arguments:
```
Call(popped = Vec::pop(v), ReturnTo(drop), UnwindContinue())
```

Also fix some outdated docs and add some docs to `Call` and `Drop`.

…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#119184 (Switch from using `//~ERROR` annotations with `--error-format` to `error-pattern`)
 - rust-lang#119325 (custom mir: make it clear what the return block is)
 - rust-lang#119391 (Use Result::flatten in catch_with_exit_code)
 - rust-lang#119397 (Recover parentheses in range patterns)
 - rust-lang#119414 (bootstrap: Move -Clto= setting from Rustc::run to rustc_cargo)
 - rust-lang#119417 (Uplift some miscellaneous coroutine-specific machinery into `check_closure`)
 - rust-lang#119527 (don't reexport atomic::ordering via rustc_data_structures, use std import)
 - rust-lang#119540 (Don't synthesize host effect args inside trait object types)

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

…rors

custom mir: make it clear what the return block is

Custom MIR recently got support for specifying the "unwind action", so now there's two things coming after the actual call part of `Call` terminators. That's not very self-explaining so I propose we change the syntax to imitate keyword arguments:
```
Call(popped = Vec::pop(v), ReturnTo(drop), UnwindContinue())
```

Also fix some outdated docs and add some docs to `Call` and `Drop`.

Rollup merge of rust-lang#119325 - RalfJung:custom-mir, r=compiler-errors

custom mir: make it clear what the return block is

Custom MIR recently got support for specifying the "unwind action", so now there's two things coming after the actual call part of `Call` terminators. That's not very self-explaining so I propose we change the syntax to imitate keyword arguments:
```
Call(popped = Vec::pop(v), ReturnTo(drop), UnwindContinue())
```

Also fix some outdated docs and add some docs to `Call` and `Drop`.