https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114855
--- Comment #54 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:9b7626383822799d60ea3c62e62e700f16337cd6 commit r15-3860-g9b7626383822799d60ea3c62e62e700f16337cd6 Author: Aldy Hernandez <al...@redhat.com> Date: Mon Aug 26 07:33:38 2024 +0200 Remove recursion in simplify_control_stmt_condition_1 [PR114855]. Remove 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. PR tree-optimization/114855 gcc/ChangeLog: * tree-ssa-threadedge.cc: Remove unneeded recursion.
