On Mon, Jul 24, 2017 at 1:49 PM Wang, Peter Xihong < peter.xihong.w...@intel.com> wrote:
> I believe we have evaluated clang vs gcc before (long time ago), and gcc > won at that time. > > > > PGO might have overshadowed impact from computed goto, and thus the latter > may no longer be needed. > Computed goto is still needed. PGO does not magically replace it. A PGO build with computed goto is faster than one without computed goto. ... as tested on gcc 4.9 a couple years ago. I doubt that has changed or changes between compilers; PGO and computed goto are different types of optimizations. -gps
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