https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82853
--- Comment #28 from Jakub Jelinek <jakub at gcc dot gnu.org> --- On i9-7960X I get (cc1 is -O0 checking build, so bootstrapped compiler might be much faster), will repeat that with bootstrapped compiler if it succeeds. The __int128 and unsigned __int128 tests are clearly too expensive. for i in 1 2 3 4 5 6; do time ./cc1 -quiet -O2 -o pr82853-$i.{s,c}; gcc -o pr82853-$i{,.s}; time ./pr82853-$i; echo $?; done real 0m11.273s user 0m11.182s sys 0m0.039s real 0m2.997s user 0m2.993s sys 0m0.001s 0 real 0m8.145s user 0m8.082s sys 0m0.026s real 0m2.166s user 0m2.165s sys 0m0.000s 0 real 0m11.683s user 0m11.597s sys 0m0.033s real 0m5.315s user 0m5.312s sys 0m0.000s 0 real 0m7.972s user 0m7.903s sys 0m0.032s real 0m3.801s user 0m3.798s sys 0m0.001s 0 real 0m12.846s user 0m12.762s sys 0m0.028s real 0m17.471s user 0m17.458s sys 0m0.001s 0 real 0m8.546s user 0m8.486s sys 0m0.022s real 0m13.738s user 0m13.728s sys 0m0.000s