https://gcc.gnu.org/g:a4be88ef0f266950d575d94b9205cd26b8357199
commit r16-4907-ga4be88ef0f266950d575d94b9205cd26b8357199 Author: Andrew Pinski <[email protected]> Date: Mon Oct 27 16:20:40 2025 -0700 fold: Remove div_if_zero_remainder [PR122437] While looking into something related to fold-const.cc, I noticed that div_if_zero_remainder was unused. The last use of it was removed in r5-3374-gf65586dcd19846 (via the removal of try_move_mult_to_index), over 11 years ago. So it is time to remove this unused function too. Plus this function is just a small wrapper around wi::multiple_of_p but creating trees which can get expensive so folks should use wi::multiple_of_p directly instead. Bootstrapped and tested on x86_64-linux-gnu. PR tree-optimization/122437 gcc/ChangeLog: * fold-const.cc (div_if_zero_remainder): Remove. Signed-off-by: Andrew Pinski <[email protected]> Diff: --- gcc/fold-const.cc | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/gcc/fold-const.cc b/gcc/fold-const.cc index 1311c6ed7de1..861d73ce9607 100644 --- a/gcc/fold-const.cc +++ b/gcc/fold-const.cc @@ -264,22 +264,6 @@ protected_set_expr_location_unshare (tree x, location_t loc) return x; } -/* If ARG2 divides ARG1 with zero remainder, carries out the exact - division and returns the quotient. Otherwise returns - NULL_TREE. */ - -tree -div_if_zero_remainder (const_tree arg1, const_tree arg2) -{ - widest_int quo; - - if (wi::multiple_of_p (wi::to_widest (arg1), wi::to_widest (arg2), - SIGNED, &quo)) - return wide_int_to_tree (TREE_TYPE (arg1), quo); - - return NULL_TREE; -} - /* This is nonzero if we should defer warnings about undefined overflow. This facility exists because these warnings are a special case. The code to estimate loop iterations does not want
