https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107822
--- Comment #6 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:1cd5bc387c453126fdb4c9400096180484ecddee commit r14-1179-g1cd5bc387c453126fdb4c9400096180484ecddee Author: Andrew MacLeod <amacl...@redhat.com> Date: Wed May 24 09:52:26 2023 -0400 Gimple range PHI analyzer and testcases Provide a PHI analyzer framework to provive better initial values for PHI nodes which formk groups with initial values and single statements which modify the PHI values in some predicatable way. PR tree-optimization/107822 PR tree-optimization/107986 gcc/ * Makefile.in (OBJS): Add gimple-range-phi.o. * gimple-range-cache.h (ranger_cache::m_estimate): New phi_analyzer pointer member. * gimple-range-fold.cc (fold_using_range::range_of_phi): Use phi_analyzer if no loop info is available. * gimple-range-phi.cc: New file. * gimple-range-phi.h: New file. * tree-vrp.cc (execute_ranger_vrp): Utililze a phi_analyzer. gcc/testsuite/ * gcc.dg/pr107822.c: New. * gcc.dg/pr107986-1.c: New.
