vkd3d-shader/d3dbc: Store a pointer to the vsir program in struct vkd3d_shader_sm1_parser.
vkd3d-shader/dxil: Store a pointer to the vsir program in struct sm6_parser.
vkd3d-shader/tpf: Store a pointer to the vsir program in struct vkd3d_shader_sm4_parser.