3 ms·

Does D fold strings with a common suffix? I.e. "bar" to a pointer into "foobar"

• WalterBright 4y ago
  I've thought about doing it a few times, but it didn't seem there was much oil in that well.
  • JonChesterfield 4y ago
    I vaguely remember it as a pattern in a dwarf string table but can't remember if the memory saving was worth the compile time. Thanks
  • nneonneo 4y ago
    FWIW, GCC does implement this optimization; see https://godbolt.org/z/o81xa94v7 https://godbolt.org/z/o81xa94v7 for an example. I've definitely run across real-world samples where it saved some bytes (at the expense of making reverse-engineering a bit more annoying!).
    • astrange 4y ago
      It only happens if you check "compile to binary" there, so I think the linker is actually doing it.