> On Aug 7, 2016, at 9:36 PM, Chris Lattner via swift-evolution > <swift-evolution@swift.org> wrote: > >> However, as linked above, someone did for Microsoft platforms (for >> Microsoft-platform-style errors) and found that there is an impact. > > C++ and Swift are completely different languages in this respect, so the > analysis doesn’t translate over.
I believe the language in question was a native-compiled C# variant, not C++. However, I suspect the numbers from Midori's experiment may not hold up in Swift. Midori used a generational mark-and-sweep garbage collector, so it didn't need to write implicit `finally` blocks to release objects owned by stack frames. Swift would. That could easily eat up the promised 7% code size savings, and the reduced ability to jump past frames could similarly damage the speed improvements. I'm not saying I have the numbers to prove that it does; I don't. But given our different constraints, there are good reasons to doubt we'd see the same results. -- Brent Royal-Gordon Architechies _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
