https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85811
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #2) > Applying pattern match.pd:832, gimple-match.c:11245 > Match-and-simplified ABS_EXPR <val_5> to val_5 Which is: (simplify (abs tree_expr_nonnegative_p@0) @0)