Re: gcc, AVX (and newer) intrinsics and binutils

2017-05-13 Thread René J . V . Bertin
To answer my own question, partly: binutils doesn't install an assembler on Mac. Bummer, so it cannot provide the answer to the intrinsic instructions issue... I was a bit surprised to find out that the CCTools as is still based on GNU as, but an *old* version. R.

Re: gcc, AVX (and newer) intrinsics and binutils

2017-05-13 Thread Christopher Jones
> Either way, benchmarks like these are rarely representative of real-world > performance in *[y]our* workloads. My own experience over the years has been > that GCC gives measurably better performance and that in cases where every > last > drop doesn't count you were better off using clang be

Re: gcc, AVX (and newer) intrinsics and binutils

2017-05-13 Thread René J . V . Bertin
Christopher Jones wrote: > My reading is there is, on average across the board, there is no clear > advantage/disadvantage to either gcc or clang That's exactly what I'm saying too. However, that's all on Linux where clang may not perform optimally (because using libstdc++) and where GCC can us

Re: gcc, AVX (and newer) intrinsics and binutils

2017-05-13 Thread Andrew Moore
> On May 13, 2017, at 2:58 PM, René J. V. Bertin wrote: > > Christopher Jones wrote: >> such that I am not really sure >> its warranted to expend a lot of effort to keep gcc alive on OSX, when > > There appear to be quite a few ports that use/expect gcc, though. For some > that > is just to g