vyre 0.4.0

GPU compute intermediate representation with a standard operation library
Documentation 
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use crate::ir::{BufferDecl, DataType, Expr, Node, Program};
use crate::ops::{OpSpec, F32_F32_INPUTS, BOOL_OUTPUTS};

/// f32 element-wise less-than predicate.
#[derive(Debug, Clone, Copy, Default)]
pub struct F32Lt;

impl F32Lt {
    pub const SPEC: OpSpec = OpSpec::composition_inlinable(
        "primitive.float.f32_lt",
        F32_F32_INPUTS,
        BOOL_OUTPUTS,
        &[],
        Self::program,
    );

    pub fn program() -> Program {
        let idx = Expr::var("idx");
        Program::new(
            vec![
                BufferDecl::read("a", 0, DataType::F32),
                BufferDecl::read("b", 1, DataType::F32),
                BufferDecl::output("out", 2, DataType::Bool),
            ],
            crate::ops::primitive::WORKGROUP_SIZE,
            vec![
                Node::let_bind("idx", Expr::gid_x()),
                Node::if_then(
                    Expr::lt(idx.clone(), Expr::buf_len("out")),
                    vec![Node::store(
                        "out",
                        idx.clone(),
                        Expr::lt(Expr::load("a", idx.clone()), Expr::load("b", idx)),
                    )],
                ),
            ],
        )
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::ir::{self, DataType};

    #[test]
    fn program_is_non_empty() {
        assert!(!F32Lt::program().entry().is_empty());
    }

    #[test]
    fn program_validates() {
        let errors = ir::validate(&F32Lt::program());
        assert!(errors.is_empty(), "validation failed: {errors:?}");
    }

    #[test]
    fn spec_id_is_correct() {
        assert_eq!(F32Lt::SPEC.id(), "primitive.float.f32_lt");
    }

    #[test]
    fn spec_signature_is_f32_f32_to_bool() {
        assert_eq!(F32Lt::SPEC.inputs(), &[DataType::F32, DataType::F32]);
        assert_eq!(F32Lt::SPEC.outputs(), &[DataType::Bool]);
    }
}