https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109564
--- Comment #19 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Andrew Macleod <amacl...@gcc.gnu.org>: https://gcc.gnu.org/g:17aa9ddb34581855dd013745c8be27dda024de4a commit r14-122-g17aa9ddb34581855dd013745c8be27dda024de4a Author: Andrew MacLeod <amacl...@redhat.com> Date: Thu Apr 20 13:10:40 2023 -0400 Do not ignore UNDEFINED ranges when determining PHI equivalences. Do not ignore UNDEFINED name arguments when registering two-way equivalences from PHIs. PR tree-optimization/109564 gcc/ * gimple-range-fold.cc (fold_using_range::range_of_phi): Do no ignore UNDEFINED range names when deciding if all PHI arguments are the same, gcc/testsuite/ * gcc.dg/torture/pr109564-1.c: New testcase. * gcc.dg/torture/pr109564-2.c: Likewise. * gcc.dg/tree-ssa/evrp-ignore.c: XFAIL. * gcc.dg/tree-ssa/vrp06.c: Likewise.
