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use serde::{Deserialize, Serialize};

use super::{Elem, Variable};

#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq)]
#[allow(missing_docs)]
pub enum MatrixIdent {
    A,
    B,
    Accumulator,
}

#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq)]
#[allow(missing_docs)]
pub enum MatrixLayout {
    ColMajor,
    RowMajor,
    Undefined,
}

#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq)]
#[allow(missing_docs)]
pub struct Matrix {
    pub ident: MatrixIdent,
    pub m: u8,
    pub n: u8,
    pub k: u8,
    pub elem: Elem,
    pub layout: MatrixLayout,
}

/// Cooperative Matrix-Multiply and Accumulate Instruction.
#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq)]
#[allow(missing_docs)]
pub enum CoopMma {
    /// Fill the matrix with the value.
    Fill { mat: Variable, value: Variable },
    /// Load the value into the matrix given the stride.
    Load {
        mat: Variable,
        value: Variable,
        stride: Variable,
    },
    /// Executes D=A*B+C;
    ///
    /// For implementing a matmul, `D=C` : `C+=A*B`
    Execute {
        mat_a: Variable,
        mat_b: Variable,
        mat_c: Variable,
        mat_d: Variable,
    },
    /// Store the matrix in an output variable following the stride and the layout.
    Store {
        output: Variable,
        mat: Variable,
        stride: Variable,
        layout: MatrixLayout,
    },
}