https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112727
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- BTW, the reason why cp_save_expr wrapped it into a SAVE_EXPR at first was that the COND_EXPR at that point wasn't TREE_READONLY, just non-side-effects and all 3 of its arguments were TREE_READONLY. Though, obviously if it wouldn't be wrapped in SAVE_EXPR at the beginning, it would probably work fine, as unshare_expr then would unshare the trees deeper. Dunno, perhaps instead of + r = cp_fold (TREE_OPERAND (x, 0)); + if (tree_invariant_p (r)) + x = r; for SAVE_EXPR we should do nothing, the SAVE_EXPR argument will be folded during cp_fold_r, and if we decided at some point to use a SAVE_EXPR, we better gimplify it that way. Other thoughts?
