Fix late-bound lifetime closure ICEs in HIR typeck and MIR borrowck
During HIR typeck, we need to teach astconv to treat late-bound regions within a closure body as free, fixing escaping bound vars ICEs in both of the issues below.
However, this then gets us to MIR borrowck, which itself needs to be taught how to instantiate free region vids for late-bound regions that come from items that _aren't_ the typeck root (for now, just closures).
Fixes#103771Fixes#103736
asm: Match clang behavior for inlateout fixed register operands
We have 2 options for representing LLVM constraints for `inlateout` operands on a fixed register (e.g. `r0`): `={r0},0` or `={r0},{r0}`.
This PR changes the behavior to the latter, which matches the behavior of Clang since https://reviews.llvm.org/D87279.
Add howto for adding new targets
When new targets are added, often a reviewer finds out that e.g. the target-3-tier-policy is not filled out (missing), there is no description etc.
This change adds a description of what I've learned while working on #102701. It should make reviews easier in the future with less rework.
r? compiler-team
Add visit_fn_ret_ty to hir intravisit
I'm working on some RPITIT changes and I need to specialize `visit_fn_ret_ty` in my visitor impl. So I guess it's better to land it separately.
r? `@compiler-errors`
FIX - StrippingDebugInfoFailed typo
DELETE - unneeded FIXME comment
UPDATE - only declare the error with ExtractBundledLibsError as an enum and use the Diagnostic derive macro
Elaborate supertrait obligations when deducing closure signatures
We elaborate the supertrait obligations of any registered predicates for a closure to see if we can infer a closure signature.
This is not as general of a fix as it *could* be, since we just elaborate supertrait bounds instead of doing a theoretical walk of _all_ registered predicates that might cause us to deduce `Fn` trait information for a closure infer var. I don't even know how to come up with an example that fails here but would work with a more general system.
Fixes#23012
Also fixes the existing compile failure in #57611
r? `@ghost` for now until I do a perf run
cc `@nikomatsakis` since you commented on https://github.com/rust-lang/rust/issues/23012#issuecomment-1152397290
On stable, our artifacts are uploaded with the raw version number (e.g.,
1.65.0), not the channel. This adjusts our detection logic to use the
version number from src/version when we detect the stable channel.
Ban dashes in miropt test file names
Dashes in miropt test file names are annoying - specifically, they cause the test files to not be sorted next to their outputs, which makes it very difficult to tell what goes with what. This PR changes all files to use underscores and adds a blessable tidy check that enforces this.
r? `@jyn514`
This PR is obviously going to bitrot very quickly. Because of this, I'm going to wait at least 48 hours and until review comes back to allow people from `@rust-lang/wg-mir-opt` or elsewhere to lodge complaints if there are any. If not, I'll rebase the branch on Friday afternoon PST and ask that it be `r+`'d with `p=1` at that time.
Fixed consistency of Apple simulator target's ABI
Currently there's a few Apple device simulator targets that are inconsistent since some set `target_abi = "sim"` (the correct thing to do) while a bunch of others don't set anything (`""`). Due to this its very hard to reliability check if some Rust code is running inside a simulator. This changes all of them to do the same thing and set `sim` as their `target_abi`.
The new way to identity a simulator during compilation is as simple as `cfg(all(target_vendor="apple", target_abi = "sim"))` or even `cfg(target_abi = "sim")` being less pedantic about it.
The issues with the current form (and inspiration for this) are also summarized in `@thomcc's` [Tweet](https://twitter.com/at_tcsc/status/1576685244702691328).
