> On Jul 23, 2017, at 5:49 PM, David Sweeris via swift-evolution > <swift-evolution@swift.org> wrote: > > > On Jul 23, 2017, at 12:18, Taylor Swift <kelvin1...@gmail.com > <mailto:kelvin1...@gmail.com>> wrote: > >> I don’t think tuples are a suitable replacement for FSAs. A tuple should be >> able to be broken up and optimized by the compiler, and have no contiguity >> guarantees in memory. > > > C's static arrays are imported as tuples, which need at least some level of > contiguity guarantees to work. Even if tuples in general make that such a > guarantee, tuple-based FSAs could use the same compiler logic as imported C > arrays.
I think that’s supposed to be a workaround solution, not a map going forward. By having to support C-array conversion, tuples have to give up tuple-specific optimizations, like rearranging members and contiguity. Adding FSAs (with a distinct internal representation) will let the two have different optimizations. — Daryle Walker Mac, Internet, and Video Game Junkie darylew AT mac DOT com
_______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
