test/tint/expressions/type_ctor/mat3x3/explicit/vectors/f32.wgsl

let m = mat3x3<f32>(vec3<f32>(0.0f, 1.0f, 2.0f),
                    vec3<f32>(3.0f, 4.0f, 5.0f),
                    vec3<f32>(6.0f, 7.0f, 8.0f));