https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116926
--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>: https://gcc.gnu.org/g:4c98b3825f99fcec8fd921550e2dc45f2d966cbb commit r15-7346-g4c98b3825f99fcec8fd921550e2dc45f2d966cbb Author: Andrew Pinski <quic_apin...@quicinc.com> Date: Mon Feb 3 19:58:45 2025 -0800 optabs: Fix widening optabs for vec-mode -> scalar-mode [PR116926] r15-4317-ga6f4404689f12 tried to add support for widending optabs for vec-mode -> scalar-mode but it misunderstood how FOR_EACH_MODE worked, the limit in this case is not inclusive. Which means setting limit to from, would cause the loop not be executed at all. This fixes by setting the limit to be the next mode after from mode. Note the original version that added the widening optabs for vec-mode -> scalar-mode (https://gcc.gnu.org/pipermail/gcc-patches/2024-October/665021.html) didn't have this bug, only the second version with suggested change (https://gcc.gnu.org/pipermail/gcc-patches/2024-October/665068.html) dud. The suggested change missed this issue with FOR_EACH_MODE. Bootstrapped and tested on x86_64-linux-gnu. PR middle-end/116926 gcc/ChangeLog: * optabs-query.cc (find_widening_optab_handler_and_mode): Fix limit for `vec-mode -> scalar-mode` case. Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
