should be implemented in ISLE · cranelift

Stream: cranelift

Topic: should be implemented in ISLE

Kristian H. Kristensen (Jun 11 2023 at 21:28):

I'm hitting

thread '<unnamed>' panicked at 'should be implemented in ISLE: inst = `v153, v154 = isplit.i64 v152`, type = `Some(types::I32)`', /home/krh/.cargo/registry/src/index.crates.io-6f17d22bba1500
1f/cranelift-codegen-0.93.2/src/machinst/lower.rs:750:21

on ARM64... does that mean isplit isn't supported there?

Afonso Bordado (Jun 11 2023 at 21:36):

Looks like isplit is currently only implemented for i128, you might be able to get around it using other instructions such as band or ushr (and ireduce).

Cranelift: isplit and iconcat only support i128 · Issue #6073 · bytecodealliance/wasmtime

isplit and iconcat lack implementations for instantiations that don't end up involving i128. .clif Test Case test compile target x86_64 target aarch64 target s390x target riscv64 function %f(i64) -...

Kristian H. Kristensen (Jun 11 2023 at 21:38):

Ah, that makes sense then, thanks.

Last updated: Jan 10 2026 at 02:36 UTC