Finn H (Feb 17 2025 at 13:42): Finn H (Feb 17 2025 at 13:42):I am trying to JIT-compile a function that takes an F32X16, multiplies it with itself and returns the result.
The IR looks like this:
function u0:0(f32x16) -> f32x16 system_v {
block0(v0: f32x16):
v1 = fmul v0, v0
return v1
}
But when i try to call JITModule::define_functions an assertion fails within the rc_for_type function.
The backtrace looks like this:
thread 'it_works_x16' panicked at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/isa/x64/inst/mod.rs:2837:17:
assertion failed: ty.bits() <= 128
stack backtrace:
0: rust_begin_unwind
at /rustc/d8810e3e2dab96778d20dd6d746ff95465515509/library/std/src/panicking.rs:695:5
1: core::panicking::panic_fmt
at /rustc/d8810e3e2dab96778d20dd6d746ff95465515509/library/core/src/panicking.rs:75:14
2: core::panicking::panic
at /rustc/d8810e3e2dab96778d20dd6d746ff95465515509/library/core/src/panicking.rs:145:5
3: cranelift_codegen::isa::x64::inst::<impl cranelift_codegen::machinst::MachInst for cranelift_codegen::isa::x64::lower::isle::generated_code::MInst>::rc_for_type
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/isa/x64/inst/mod.rs:2837:17
4: <cranelift_codegen::isa::x64::abi::X64ABIMachineSpec as cranelift_codegen::machinst::abi::ABIMachineSpec>::compute_arg_locs
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/isa/x64/abi.rs:172:34
5: cranelift_codegen::machinst::abi::SigSet::from_func_sig
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/machinst/abi.rs:857:42
6: cranelift_codegen::machinst::abi::SigSet::make_abi_sig_from_ir_signature
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/machinst/abi.rs:790:24
7: cranelift_codegen::machinst::abi::SigSet::new
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/machinst/abi.rs:759:9
8: cranelift_codegen::isa::x64::X64Backend::compile_vcode
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/isa/x64/mod.rs:59:20
9: <cranelift_codegen::isa::x64::X64Backend as cranelift_codegen::isa::TargetIsa>::compile_function
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/isa/x64/mod.rs:73:40
10: cranelift_codegen::context::Context::compile_stencil
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/context.rs:138:9
11: cranelift_codegen::context::Context::compile
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-codegen-0.116.1/src/context.rs:204:23
12: <cranelift_jit::backend::JITModule as cranelift_module::module::Module>::define_function_with_control_plane
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-jit-0.116.1/src/backend.rs:705:19
13: cranelift_module::module::Module::define_function
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-module-0.116.1/src/module.rs:952:9
14: <alloc::boxed::Box<M> as cranelift_module::module::Module>::define_function
at /~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cranelift-module-0.116.1/src/module.rs:1169:9
15: anita_core::jit::JIT<T,F>::compile
at ./anita_core/src/jit/mod.rs:167:9
16: simd::it_works_x16
at ./tests/simd.rs:18:20
17: simd::it_works_x16::{{closure}}
at ./tests/simd.rs:17:18
18: core::ops::function::FnOnce::call_once
at /~/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
19: core::ops::function::FnOnce::call_once
at /rustc/d8810e3e2dab96778d20dd6d746ff95465515509/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
does that mean there is no RegClass for any other simd registers than xmm? Or could it be i missed something when setting up my JIT?
If there is any other information i can provide please let me know
edit: everything works as expected when using F32X4 instead.
Last updated: Feb 27 2025 at 23:03 UTC