Nightly ICE: Using function pointer as reg argument in asm! macro causes rustc panic

[VisualEhrmanntraut]

Encountered while compiling my UEFI boot-loader project.

Issue reproduction code

pub type Yes = extern "sysv64" fn(&'static u8) -> !;

fn main() {
    unsafe {
        let yes = &6 as *const _ as *const Yes;
        core::arch::asm!("call {}", in(reg) yes, options(noreturn));
    }
}

Meta

rustc --version --verbose:

rustc 1.63.0-nightly (ebbcbfc23 2022-05-27)
binary: rustc
commit-hash: ebbcbfc236ced21d5e6a92269edb704692ff26b8
commit-date: 2022-05-27
host: x86_64-apple-darwin
release: 1.63.0-nightly
LLVM version: 14.0.4

Error output

thread 'rustc' panicked at 'index out of bounds: the len is 0 but the index is 120', /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/snapshot_vec.rs:199:10

Backtrace

stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic_bounds_check
   3: <ena::unify::UnificationTable<ena::unify::backing_vec::InPlace<rustc_middle::infer::unify_key::RegionVidKey, &mut alloc::vec::Vec<ena::unify::VarValue<rustc_middle::infer::unify_key::RegionVidKey>>, &mut rustc_infer::infer::undo_log::InferCtxtUndoLogs>>>::uninlined_get_root_key
   4: <rustc_infer::infer::canonical::canonicalizer::Canonicalizer as rustc_middle::ty::fold::TypeFolder>::fold_region
   5: <rustc_middle::ty::Ty as rustc_middle::ty::fold::TypeFoldable>::super_fold_with::<rustc_infer::infer::canonical::canonicalizer::Canonicalizer>
   6: <&rustc_middle::ty::list::List<rustc_middle::ty::Ty> as rustc_middle::ty::fold::TypeFoldable>::try_fold_with::<rustc_infer::infer::canonical::canonicalizer::Canonicalizer>
   7: <rustc_middle::ty::Ty as rustc_middle::ty::fold::TypeFoldable>::super_fold_with::<rustc_infer::infer::canonical::canonicalizer::Canonicalizer>
   8: <&rustc_middle::ty::list::List<rustc_middle::ty::subst::GenericArg> as rustc_middle::ty::fold::TypeFoldable>::try_fold_with::<rustc_infer::infer::canonical::canonicalizer::Canonicalizer>
   9: <rustc_middle::ty::PredicateKind as rustc_middle::ty::fold::TypeFoldable>::try_fold_with::<rustc_infer::infer::canonical::canonicalizer::Canonicalizer>
  10: <rustc_middle::ty::ParamEnvAnd<rustc_middle::ty::Predicate> as rustc_middle::ty::fold::TypeFoldable>::fold_with::<rustc_infer::infer::canonical::canonicalizer::Canonicalizer>
  11: <rustc_infer::infer::canonical::canonicalizer::Canonicalizer>::canonicalize::<rustc_middle::ty::ParamEnvAnd<rustc_middle::ty::Predicate>>
  12: <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt>::evaluate_obligation
  13: <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt>::evaluate_obligation_no_overflow
  14: rustc_trait_selection::traits::type_known_to_meet_bound_modulo_regions
  15: <rustc_infer::infer::InferCtxtBuilder>::enter::<bool, rustc_ty_utils::common_traits::is_item_raw::{closure#0}>
  16: rustc_ty_utils::common_traits::is_item_raw
  17: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::ParamEnvAnd<rustc_middle::ty::Ty>, bool>>
  18: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::is_copy_raw, rustc_query_impl::plumbing::QueryCtxt>
  19: <rustc_middle::ty::Ty>::is_copy_modulo_regions
  20: <rustc_typeck::check::fn_ctxt::FnCtxt>::check_asm_operand_type
  21: <rustc_typeck::check::fn_ctxt::FnCtxt>::check_asm
  22: <rustc_typeck::check::fn_ctxt::FnCtxt>::check_asms
  23: <rustc_infer::infer::InferCtxtBuilder>::enter::<&rustc_middle::ty::context::TypeckResults, <rustc_typeck::check::inherited::InheritedBuilder>::enter<rustc_typeck::check::typeck_with_fallback<rustc_typeck::check::typeck::{closure#0}>::{closure#1}, &rustc_middle::ty::context::TypeckResults>::{closure#0}>
  24: rustc_typeck::check::typeck
  25: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::LocalDefId, &rustc_middle::ty::context::TypeckResults>>
  26: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::typeck, rustc_query_impl::plumbing::QueryCtxt>
  27: <rustc_middle::hir::map::Map>::par_body_owners::<rustc_typeck::check::typeck_item_bodies::{closure#0}>
  28: rustc_typeck::check::typeck_item_bodies
  29: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<(), ()>>
  30: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::typeck_item_bodies, rustc_query_impl::plumbing::QueryCtxt>
  31: <rustc_session::session::Session>::time::<(), rustc_typeck::check_crate::{closure#7}>
  32: rustc_typeck::check_crate
  33: rustc_interface::passes::analysis
  34: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<(), core::result::Result<(), rustc_errors::ErrorGuaranteed>>>
  35: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
  36: <rustc_interface::passes::QueryContext>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}::{closure#3}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
  37: <rustc_interface::interface::Compiler>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}, core::result::Result<core::option::Option<rustc_interface::queries::Linker>, rustc_errors::ErrorGuaranteed>>
  38: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_interface::interface::create_compiler_and_run<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#1}>
  39: rustc_interface::interface::create_compiler_and_run::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>
  40: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.63.0-nightly (ebbcbfc23 2022-05-27) running on x86_64-apple-darwin

note: compiler flags: --crate-type bin -C opt-level=3 -C lto -Z unstable-options

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [is_copy_raw] computing whether `extern "sysv64" fn(&kaboom::Explosion) -> !` is `Copy`
#1 [typeck] type-checking `efi_main`
#2 [typeck_item_bodies] type-checking all item bodies
#3 [analysis] running analysis passes on this crate
end of query stack