XX:CodeCacheExpansionSize, XX:NonNMethodCodeHeapSize, XX:ProfiledCodeHeapSize and XX:NonProfiledCodeHeapSize options explictly processed in the hotspot/src/share/vm/runtime/arguments.cpp file:
    } else if (match_option(option, "-XX:CodeCacheExpansionSize=", &tail)) {
      julong long_CodeCacheExpansionSize = 0;
      ArgsRange errcode = parse_memory_size(tail, &long_CodeCacheExpansionSize, os::vm_page_size());
      if (errcode != arg_in_range) {
        jio_fprintf(defaultStream::error_stream(),
                   "Invalid argument: %s. Must be at least %luK.\n", option->optionString,
                   os::vm_page_size()/K);
        return JNI_EINVAL;
      }
      if (FLAG_SET_CMDLINE(uintx, CodeCacheExpansionSize, (uintx)long_CodeCacheExpansionSize) != Flag::SUCCESS) {
        return JNI_EINVAL;
      }
...
      // -XX:NonNMethodCodeHeapSize=
    } else if (match_option(option, "-XX:NonNMethodCodeHeapSize=", &tail)) {
      julong long_NonNMethodCodeHeapSize = 0;

      ArgsRange errcode = parse_memory_size(tail, &long_NonNMethodCodeHeapSize, 1);
      if (errcode != arg_in_range) {
        jio_fprintf(defaultStream::error_stream(),
                    "Invalid maximum non-nmethod code heap size: %s.\n", option->optionString);
        return JNI_EINVAL;
      }
      if (FLAG_SET_CMDLINE(uintx, NonNMethodCodeHeapSize, (uintx)long_NonNMethodCodeHeapSize) != Flag::SUCCESS) {
        return JNI_EINVAL;
      }
      // -XX:ProfiledCodeHeapSize=
    } else if (match_option(option, "-XX:ProfiledCodeHeapSize=", &tail)) {
      julong long_ProfiledCodeHeapSize = 0;

      ArgsRange errcode = parse_memory_size(tail, &long_ProfiledCodeHeapSize, 1);
      if (errcode != arg_in_range) {
        jio_fprintf(defaultStream::error_stream(),
                    "Invalid maximum profiled code heap size: %s.\n", option->optionString);
        return JNI_EINVAL;
      }
      if (FLAG_SET_CMDLINE(uintx, ProfiledCodeHeapSize, (uintx)long_ProfiledCodeHeapSize) != Flag::SUCCESS) {
        return JNI_EINVAL;
      }
      // -XX:NonProfiledCodeHeapSizee=
    } else if (match_option(option, "-XX:NonProfiledCodeHeapSize=", &tail)) {
      julong long_NonProfiledCodeHeapSize = 0;
      ArgsRange errcode = parse_memory_size(tail, &long_NonProfiledCodeHeapSize, 1);
      if (errcode != arg_in_range) {
        jio_fprintf(defaultStream::error_stream(),
                    "Invalid maximum non-profiled code heap size: %s.\n", option->optionString);
        return JNI_EINVAL;
      }
      if (FLAG_SET_CMDLINE(uintx, NonProfiledCodeHeapSize, (uintx)long_NonProfiledCodeHeapSize) != Flag::SUCCESS) {
        return JNI_EINVAL;
      }

It seems that explicit processing can be deleted, because generic option processing can process numeric and memory values(10m) and JEP-245 allow to specify valid ranges(e.g. min value).
Currently min value for these options is specified to 0(in hotspot/src/src/share/vm/runtime/globals.hpp file), but it can be adjusted according to the values in processing code in arguments.cpp file.

Removing explicit processing of these options makes very big if statement more simple.