[Bug tree-optimization/55812] Unnecessary TLS accesses

[glisse at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55812



--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> 2012-12-26 15:43:50 
UTC ---

More precisely, the following seems equivalent to me and gets back all the

performance, so it would be good if gcc could turn the original code into this

one.



#include <vector>

thread_local std::vector<int> v;

int main(){

  std::vector<int>*vp=&v;

  for(long i=0;i<400000000;++i){

    vp->push_back(i);

  }

  return vp->size();

}