https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127758
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <[email protected]>: https://gcc.gnu.org/g:d56633c724c52910db102ecd314069af4243fa4d commit r17-4995-gd56633c724c52910db102ecd314069af4243fa4d Author: Richard Biener <[email protected]> Date: Thu Oct 8 13:05:57 2026 +0200 tree-optimization/127758 - PTA quadraticness The following addresses PTA quadratic compile-time in basically random cases, namely if constraints are ordered in a way that we unify ESCAPED to a regular variable. That drops is_artificial_var handling from solving and bleeds the ESCAPED results everywhere. Simply refuse merging artificial vars elsewhere. PR tree-optimization/127758 * pta-andersen.cc (unite): Refuse to merge an artificial variable into another.
