https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103359
--- Comment #10 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:661c02e54ea72fb55205df0a717951ff28bb739e commit r12-5522-g661c02e54ea72fb55205df0a717951ff28bb739e Author: Andrew MacLeod <amacl...@redhat.com> Date: Tue Nov 23 14:12:29 2021 -0500 Check for equivalences between PHI argument and def. If a PHI argument on an edge is equivalent with the DEF, then it doesn't provide any new information, defer processing it unless they are all equivalences. PR tree-optimization/103359 gcc/ * gimple-range-fold.cc (fold_using_range::range_of_phi): If arg is equivalent to def, don't initially include it's range. gcc/testsuite/ * gcc.dg/pr103359.c: New.
