https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114855
--- Comment #7 from Andrew Macleod <amacleod at redhat dot com> --- LOoks like the primary culprits now are: dominator optimization : 666.73 ( 7%) 0.77 ( 2%) 671.76 ( 7%) 170M ( 4%) backwards jump threading :7848.77 ( 85%) 21.04 ( 65%)7920.05 ( 85%) 1332M ( 29%) TOTAL :9250.99 32.58 9341.40 4619M