http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43884
--- Comment #20 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-01-22 21:45:23 UTC --- Patch posted http://gcc.gnu.org/ml/gcc-patches/2011-01/msg01597.html I tested that is seems to bring us back to the 4.3 speed jh@gcc10:~/trunk/build/gcc$ time ./a.out 45 fib(45)=1134903170 real 0m7.978s user 0m7.976s sys 0m0.000s jh@gcc10:~/trunk/build/gcc$ gcc-4.3 Display all 708 possibilities? (y or n) jh@gcc10:~/trunk/build/gcc$ gcc-4.3 -O3 tt.c jh@gcc10:~/trunk/build/gcc$ time ./a.out 45 fib(45)=1134903170 real 0m7.902s user 0m7.888s sys 0m0.000s and before patch jh@gcc10:~/trunk/build2/gcc$ time ./a.out 45 fib(45)=1134903170 real 0m8.222s user 0m8.213s sys 0m0.000s
