Why C++ Sails When the Vasa Sank [pdf]

Re:Why C++ Sails When the Vasa Sank [pdf] by pornel on Monday June 23, 2014 @06:25PM (#7935129)

Rust uses LLVM, so it benefits from the same optimizer as clang. The front-end is less mature of course, but also Rust is less complex, so may not need man-centuries of work to be parsed properly ;)

Currently Rust doesn't outperform C++ partly because LLVM is optimized for the C subset (can't take advantage of extra aliasing/immutability information Rust has), but given that Apple is now betting on (quite similar) Swift I expect LLVM to rapidly improve in this area.

[ Parent | on HN ]

Re:Why C++ Sails When the Vasa Sank [pdf] by gsnedders on Monday June 23, 2014 @07:05PM (#7935320)

Also remember most of the work on Rust at the moment is focused on stabilizing the language — performance is only really required to be acceptable for now, provided it is possible to improve.

[ Parent | on HN ]

Re:Why C++ Sails When the Vasa Sank [pdf] by steveklabnik on Monday June 23, 2014 @07:17PM (#7935364)

Yes, there are several places where, for example, we generate sub-optimal LLVM IR, but time is better spent getting the interfaces and language spec correct for 1.0 than squeezing out performance.

I should mention that that's different than 'who cares about performance, let's toss this in.' Performance aspects are absolutely taken into account when changing the language. But that's different than the implementation itself.

[ Parent | on HN ]