Re: Poor performance with GNAT-GPL-2017

[gautier_niouzes@hotmail.com]

On a number-crunching program, I also get an average of +5% improvement with GPL 2017 too. It depends a lot on the kind of program, tasking or not, compiler options, part of FPU calculation, the machine itself, etc. So no general conclusion.
The compiler options I use are:

         when "Optimize" =>
            for Default_Switches ("ada") use ("-gnat12", "-gnatwu", "-O2", "-gnatpn", 
              "-funroll-loops", "-fpeel-loops", "-funswitch-loops", 
              "-ftracer", "-fweb", "-frename-registers",
              "-fpredictive-commoning", "-fgcse-after-reload", "-ftree-vectorize", "-fipa-cp-clone",
              "-ffunction-sections", 
              "-mfpmath=sse", "-msse4.2",
              "-g");

Cheers
Gautier
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