rlx-ir 0.2.1

Tensor IR for the RLX ML compiler — standalone, serializable, optimizable
Documentation 
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// RLX — versatile ML compiler + runtime.
// Copyright (C) 2026 Eugene Hauptmann, Nataliya Kosmyna.

//! NCHW convolution builders (`conv2d`, `conv_transpose2d`).

use crate::{Graph, NodeId, Op};

impl Graph {
    /// 2D convolution on NCHW tensors (`Op::Conv`). Weight `[C_out, C_in/g, kH, kW]`.
    pub fn conv2d(
        &mut self,
        input: NodeId,
        weight: NodeId,
        kernel_size: [usize; 2],
        stride: [usize; 2],
        padding: [usize; 2],
        dilation: [usize; 2],
        groups: usize,
    ) -> NodeId {
        let in_s = self.node(input).shape.clone();
        let w_s = self.node(weight).shape.clone();
        let out = crate::shape::conv2d_output_shape(
            &in_s,
            &w_s,
            kernel_size,
            stride,
            padding,
            dilation,
            groups,
        )
        .expect("conv2d shape inference");
        self.push(
            Op::Conv {
                kernel_size: kernel_size.to_vec(),
                stride: stride.to_vec(),
                padding: padding.to_vec(),
                dilation: dilation.to_vec(),
                groups,
            },
            vec![input, weight],
            out,
            None,
        )
    }

    /// 2D transposed convolution on NCHW. Weight `[C_in, C_out/g, kH, kW]`.
    pub fn conv_transpose2d(
        &mut self,
        input: NodeId,
        weight: NodeId,
        kernel_size: [usize; 2],
        stride: [usize; 2],
        padding: [usize; 2],
        dilation: [usize; 2],
        output_padding: [usize; 2],
        groups: usize,
    ) -> NodeId {
        let in_s = self.node(input).shape.clone();
        let w_s = self.node(weight).shape.clone();
        let out = crate::shape::conv_transpose2d_output_shape(
            &in_s,
            &w_s,
            kernel_size,
            stride,
            padding,
            dilation,
            output_padding,
            groups,
        )
        .expect("conv_transpose2d shape inference");
        self.push(
            Op::ConvTranspose2d {
                kernel_size: kernel_size.to_vec(),
                stride: stride.to_vec(),
                padding: padding.to_vec(),
                dilation: dilation.to_vec(),
                output_padding: output_padding.to_vec(),
                groups,
            },
            vec![input, weight],
            out,
            None,
        )
    }
}