https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116926
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Victor Do Nascimento <victor...@gcc.gnu.org>: https://gcc.gnu.org/g:a6f4404689f12fa169540d94c0d06532c7152c2f commit r15-4317-ga6f4404689f12fa169540d94c0d06532c7152c2f Author: Victor Do Nascimento <victor.donascime...@arm.com> Date: Thu Oct 10 12:55:04 2024 +0100 middle-end: [PR middle-end/116926] Allow widening optabs for vec-mode -> scalar-mode The recent refactoring of the dot_prod optab to convert-type exposed a limitation in how `find_widening_optab_handler_and_mode' is currently implemented, owing to the fact that, while the function expects the GET_MODE_CLASS (from_mode) == GET_MODE_CLASS (to_mode) condition to hold, the c6x backend implements a dot product from V2HI to SI, which triggers an ICE. Consequently, this patch adds some logic to allow widening optabs which accumulate vector elements to a single scalar. gcc/ChangeLog: PR middle-end/116926 * optabs-query.cc (find_widening_optab_handler_and_mode): Add handling of vector -> scalar optab handling.
