LunarG updates spirv-opt white paper

LunarG has updated its white paper that describes using spirv-opt to reduce SPIR-V size. New discussions include using spirv-opt to “legalize” SPIR-V when generated from HLSL; SPIR-V integration with the glslang and dxc frontends; description of new size reduction passes available in spirv-opt; and updates to the recommended recipe for those who wish to customize their optimization.