When specifying -O3 or -Oz, asc now automatically increases the optimize level to 4, then including costly non-LLVM optimizations for blocky code, in turn achieving similar results as an LLVM-based generator.
With `Type.bool`, size is 1, so dividing by 8 isn't the right way to convert to byteSize. Instead, we need to use the `byteSize` property that does the proper ceiling division.
