From: no.email@nospam.invalid   
      
   Hans Bezemer  writes:   
   > The tail call method however, requires an entirely different   
   > VM. That's a lot of work for about 10% performance improvement - that   
   > may not even last for a single GCC update. And requires two VM's to   
   > maintain..   
      
   You'd have to change the VM but on the other hand, it's a documented and   
   supported feature of both GCC and Clang, and other compilers might get   
   it too.  I wouldn't worry about it vanishing with the next GCC update.   
      
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