LLVM ERROR: example-calendar.rs with dump-mir, -Zpolymorphize and debug assertions

[matthiaskrgr]

Code

Note that in order to reproduce this, you need a rustc build with debug assertions enabled!

Code: https://github.com/rust-lang/rust/blob/master/src/test/ui/impl-trait/example-calendar.rs

Meta

rustc --version --verbose:

rustc 1.58.0-dev
binary: rustc
commit-hash: unknown
commit-date: unknown
host: x86_64-unknown-linux-gnu
release: 1.58.0-dev
LLVM version: 13.0.0

rustc @ 0119879

Error output

rustc ./src/test/ui/impl-trait/example-calendar.rs -Zdump-mir=all -Zpolymorphize=on

Both operands to ICmp instruction are not of the same type!
  %18 = icmp ule %"core::iter::adapters::chain::Chain<core::option::IntoIter<alloc::string::String>, core::iter::adapters::map::Map<core::iter::adapters::map::Map<GroupBy<core::iter::adapters::peekable::Peekable<InGroup<core::iter::adapters::peekable::Peekable<InGroup<core::ops::range::RangeFrom<NaiveDate>, [closure@./src/test/ui/impl-trait/example-calendar.rs:321:12: 321:36], i32>>, [closure@./src/test/ui/impl-trait/example-calendar.rs:403:17: 403:30], u32>>, [closure@./src/test/ui/impl-trait/example-calendar.rs:419:17: 419:45]>, [closure@./src/test/ui/impl-trait/example-calendar.rs:567:18: 567:34]>, [closure@./src/test/ui/impl-trait/example-calendar.rs:488:12: 510:6]>>"* %15, %"core::iter::adapters::chain::Chain<core::option::IntoIter<alloc::string::String>, core::iter::adapters::map::Map<core::iter::adapters::map::Map<GroupBy<core::iter::adapters::peekable::Peekable<InGroup<core::iter::adapters::peekable::Peekable<InGroup<core::ops::range::RangeFrom<NaiveDate>, [closure@./src/test/ui/impl-trait/example-calendar.rs:321:12: 321:36], i32>>, [closure@./src/test/ui/impl-trait/example-calendar.rs:403:17: 403:30], u32>>, [closure@./src/test/ui/impl-trait/example-calendar.rs:419:17: 419:45]>, [closure@./src/test/ui/impl-trait/example-calendar.rs:567:18: 567:34]>, [closure@./src/test/ui/impl-trait/example-calendar.rs:488:12: 510:6]>>.3"* %17
in function _ZN5alloc3vec18source_iter_marker24write_in_place_with_drop28_$u7b$$u7b$closure$u7d$$u7d$17hafca98b87cb714a6E
LLVM ERROR: Broken function found, compilation aborted!

[matthiaskrgr]

Seems to be fixed in nightly rustc 1.67.0-nightly (09508489e 2022-11-04) with debug assertions