couple RA tests fail if built with cranelift

[matthiaskrgr]

´rustc 1.79.0-nightly (83d0a940c 2024-04-06)´

I noticed that when I run a cargo test of rust-analyzer @ d9c29afaee6cb26044b5a605e0073fcabb2e9722 , all the tests pass, but when I use cranelift, some some of the tests fail:

RUSTFLAGS="-Zcodegen-backend=cranelift" ~/.cargo/bin/cargo +master test

failures:
    consteval::tests::const_loop
    consteval::tests::try_block
    consteval::tests::try_operator
    layout::tests::recursive
    tests::regression::unsize_array_with_inference_variable
    tests::simple::async_fn_and_try_operator
    tests::simple::block_modifiers_smoke_test
    tests::simple::recursive_type_alias
    tests::traits::infer_try_block
    tests::traits::infer_try_trait
    tests::traits::trait_impl_self_ty_cycle
    tests::traits::unselected_projection_in_trait_env_cycle_2

test result: FAILED. 753 passed; 12 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.25s

[bjorn3]

consteval::tests::const_loop is because of a std::panic::resume_unwind thrown on cycle errors, which because cg_clif only supports panic=abort currently can't be caught again. The other tests likely have the same issue.