test/tint/expressions/type_conv/mat2x3/var/f32-f16.wgsl

// flags:  --hlsl_shader_model 62
enable f16;
var<private> u = mat2x3<f32>(1.0f, 2.0f, 3.0f,
                             4.0f, 5.0f, 6.0f);
fn f() {
    var v : mat2x3<f16> = mat2x3<f16>(u);
}