https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89007
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by hongtao Liu <[email protected]>: https://gcc.gnu.org/g:765ef64246da4b65ca394b29095cbf891006977d commit r17-3888-g765ef64246da4b65ca394b29095cbf891006977d Author: liuhongt <[email protected]> Date: Tue Sep 1 01:48:29 2026 -0700 vect: Allow signed types in average fallback [PR89007] The average fallback is restricted to unsigned types, but it also works for signed types. Arithmetic right shifts round down, and the low-bit carry adjusts the result in the same way. Remove the unsigned restriction. Use target_supports_op_p rather than optab_for_tree_code to check whether the fallback operations are available. gcc/ChangeLog: PR tree-optimization/89007 * tree-vect-patterns.cc (vect_recog_average_pattern): Allow signed types in the fallback. Check whether the fallback operations are supported. gcc/testsuite/ChangeLog: PR tree-optimization/89007 * gcc.target/i386/pr89007.c: New test.
