Cannot run project due error unsupported llvm intrinsic llvm.prefetch - trap at Instance ... llvm.x86.avx2.psad.bw

[qarmin]

Steps to reproduce

git clone https://github.com/qarmin/czkawka.git
cd czkawka
git checkout 4ae23037e493bc6af7f5e257f8220fd097e3dba4
cd czkawka_slint_gui
CARGO_PROFILE_DEV_CODEGEN_BACKEND=cranelift cargo +nightly run -Zcodegen-backend

Error

warning: unsupported llvm intrinsic llvm.prefetch; replacing with trap

warning: `czkawka_core` (lib) generated 1 warning
    Finished dev [unoptimized + debuginfo] target(s) in 2m 00s
rafal@rafal-H87M-D3H:~/Projekty/Rust/czkawka/czkawka_slint_gui$ CARGO_PROFILE_DEV_CODEGEN_BACKEND=cranelift cargo +nightly run -Zcodegen-backend
warning: unsupported llvm intrinsic llvm.prefetch; replacing with trap

warning: `czkawka_core` (lib) generated 1 warning
    Finished dev [unoptimized + debuginfo] target(s) in 1.80s
     Running `/home/rafal/Projekty/Rust/czkawka/target/debug/czkawka_slint`
trap at Instance { def: Item(DefId(2:14641 ~ core[53bd]::core_arch::x86::avx2::_mm256_sad_epu8)), args: [] } (_ZN4core9core_arch3x864avx215_mm256_sad_epu817h452ea8cc02b4bc52E): llvm.x86.avx2.psad.bw

[bjorn3]

Turns out cg_clif miscompiled is_x86_feature_detected!() such that AVX is never detected: #1405 (comment) This has resulted in me not noticing all the AVX intrinsics that crates rely on. When using the rustup component, an LLVM compiled libstd will be used which has a correct is_x86_feature_detected!() which does detect AVX. I will work on implementing this AVX vendor intrinsic tomorrow.

[bjorn3]

I can't directly reproduce this as I'm testing it on a server without gui support. Assuming this issue originates from the image crate, I can reproduce it using the test suite of the image crate. Working on a fix right now.

[bjorn3]

If it was indeed the image crate being broken, a fix should now be available on the implement_xgetbv branch.

[bjorn3]

Can you try again with the latest nightly? The image crate should now fully work.

[qarmin]

I tried day or two day ago to run in after using rustup update, but it was still broken.

But when I run it via - https://github.com/rust-lang/rustc_codegen_cranelift/releases/tag/dev - then everything works fine.

[bjorn3]

I tried day or two day ago to run in after using rustup update, but it was still broken.

The subtree sync only just landed in the latest nightly.

But when I run it via - https://github.com/rust-lang/rustc_codegen_cranelift/releases/tag/dev - then everything works fine.

Great!