https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104015
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Kewen Lin <li...@gcc.gnu.org>: https://gcc.gnu.org/g:6d51a9c6447bace21f860e70aed13c6cd90971bd commit r12-6582-g6d51a9c6447bace21f860e70aed13c6cd90971bd Author: Kewen Lin <li...@linux.ibm.com> Date: Fri Jan 14 07:02:10 2022 -0600 vect: Check partial vector param for supports_partial_vectors [PR104015] As described in PR104015, the function partial_vectors_supported_p mainly checks optabs for partial vectors support query, but we still have one parameter param_vect_partial_vector_usage to control the capability. Power9 introduces vector with length instructions (for len_load/len_store) but we don't enable partial vector on it by default. It should be considered as not supporting partial vector by default. This fix is to make the flag supports_partial_vectors check param_vect_partial_vector_usage accordingly. gcc/ChangeLog: PR tree-optimization/104015 * tree-vect-loop.c (vect_analyze_loop): Check param_vect_partial_vector_usage for supports_partial_vectors.
