test/expressions/type_ctor/mat3x4/explicit/vectors/f32.wgsl

let m = mat3x4<f32>(vec4<f32>(0.0, 1.0, 2.0, 3.0),
                    vec4<f32>(4.0, 5.0, 6.0, 7.0),
                    vec4<f32>(8.0, 9.0, 10.0, 11.0));