https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114855
--- Comment #23 from Aldy Hernandez <aldyh at gcc dot gnu.org> --- (In reply to Aldy Hernandez from comment #22) > Created attachment 59001 [details] > reduce recursion in forward threader (patch in testing) > > As suggested by Richard in PR116166. Should've been more verbose in the description: This patch removes some ad-hoc simplification code in the forward threader, as the call into the ranger in m_simplifier->simplify() will handle anything we can do manually in simplify_control_stmt_condition_1. In PR114855, DOM time is reduced from 120s to 92s (-23%) and overall compilation time from 235s to 205s (-12%). The total thread count at -O1 is unchanged for the testcase. In our bootstrap .ii benchmark suite, I see we thread 3 threads less over all files at -O1. At -O2, the backward threader picks up one more, for no difference over all.
