From: arne@vajhoej.dk   
      
   On 2/24/2025 12:42 PM, Michael S wrote:   
   > On Thu, 7 Nov 2024 16:48:49 -0500   
   > Arne Vajhøj  wrote:   
   >> On 11/7/2024 12:33 PM, gcalliet wrote:   
   >>> Le 04/11/2024 à 21:16, Arne Vajhøj a écrit :   
   >>>> I wish someone would volunteer to create VMS support   
   >>>> in GCC 16 or whatever!   
   >>>>   
   >>> Because I created (canadian method) Gnat Ada (on gcc) for VMS   
   >>> Itanium, and because we were on gcc 4.7, there is some work ahead,   
   >>> but why not :)   
   >>>   
   >>> The big issue is the step to gcc 5, where they upgraded to c++   
   >>> mode. It is one of the reasons why Adacore didn't continue support   
   >>> of gnat ada on VMS in 2015.   
   >>   
   >> VMS x86-64 has a better C++ compiler than VMS Itanium.   
      
   That comment was about C++ standard compliance not performance.   
      
   C++ VMS x86-64 is clang which in the (older) clang version used   
   should mean C++14 while C++ VMS Itanium is very very old (like   
   C++ 98 old).   
      
   > According to the benchmarks that you posted here several months (a   
   > year?) ago, VMS x86-64 compilers are quite awful comparatively to   
   > x86-64 compilers available on Windows/Linux/BSD.   
   > Do you want to say that VMS Itanium compilers are worse?   
      
   I believe the conclusion was that the VMS x86-64 compilers except C++   
   was slower than C/C++ on other OS and C++ on VMS.   
      
   My guess is that it is a combination of the GEM to LLVM translation   
   and a desire from VSI to be a little conservative (prioritizing   
   correctness over speed).   
      
   Arne   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)