Include bounds from promoted constants in NLL
Previously a promoted function wouldn't have its bound propagated out to
the main function body.
When we visit a promoted, we now type check the MIR of the promoted
and transfer any lifetime constraints to back to the main function's MIR.
Fixes#57170
r? @nikomatsakis
Type annotations are shared between the MIR of a function and the
promoted constants for that function, so keep them in the type checker
when we check the promoted MIR.
Remove NodeId from more HIR nodes
The next iteration of HirIdification (#57578).
Removes `NodeId` from:
- [x] `Stmt`
- [x] `Local`
- [x] `Field`
- [x] `AnonConst`
- [x] `TraitItem`
- [x] `ImplItem`
- [x] `TypeBinding`
- [x] `Arg`
- [x] `TraitRef`
- [x] `VisibilityKind`
It will most probably break clippy again; I'd appreciate a **delegate** again if/when it is good to go so I can attach a clippy fix later.
r? @Zoxc
Put Local, Static and Promoted as one Base variant of Place
Related to #52708
The `Place` 2.0 representation use a `Base` variant for `Local`, `Static` and `Promoted` so we start making this change in the current `Place` to make the following steps simpler.
r? @oli-obk
Add unstable option to ignore should_panic tests
Add an unstable option `--exclude-should-panic` to libtest to workaround https://github.com/rust-lang/miri/issues/636
?r @oli-obk
cc @RalfJung
rustc: Update LLVM, remove dead wasm code
This commit updates the LLVM branch to the rebased version of the
upstream release/8.x branch. This includes a wasm patch which means that
the `rewrite_imports` pass in rustc is no longer needed (yay!) and we
can instead rely on `wasm-import-module`, an attribute we're already
emitting, to take care of all the work.
Support defining C compatible variadic functions
## Summary
Add support for defining C compatible variadic functions in unsafe rust with
`extern "C"` according to [RFC 2137].
## Details
### Parsing
When parsing a user defined function that is `unsafe` and `extern "C"` allow
variadic signatures and inject a "spoofed" `VaList` in the new functions
signature. This allows the user to interact with the variadic arguments via a
`VaList` instead of manually using `va_start` and `va_end` (See [RFC 2137] for
details).
### Codegen
When running codegen for a variadic function, remove the "spoofed" `VaList`
from the function signature and inject `va_start` when the arg local
references are created for the function and `va_end` on return.
## TODO
- [x] Get feedback on injecting `va_start/va_end` in MIR vs codegen
- [x] Properly inject `va_end` - It seems like it should be possible to inject
`va_end` on the `TerminatorKind::Return`. I just need to figure out how
to get the `LocalRef` here.
- [x] Properly call Rust defined C variadic functions in Rust - The spoofed
`VaList` causes problems here.
Related to: #44930
r? @ghost
[RFC 2137]: https://github.com/rust-lang/rfcs/blob/master/text/2137-variadic.md
