https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127407
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-16 branch has been updated by Richard Biener <[email protected]>: https://gcc.gnu.org/g:c97c50e1eb4b37d6720492089ebb631ecb8ad4b9 commit r16-9854-gc97c50e1eb4b37d6720492089ebb631ecb8ad4b9 Author: Richard Biener <[email protected]> Date: Thu Sep 17 11:24:41 2026 +0200 tree-optimization/127407 - negative step dependence of grouped stores The following adds a missed check for preserving scalar oder of stores to the negative distance case in the vectorizers dependence analysis. PR tree-optimization/127407 * tree-vect-data-refs.cc (vect_analyze_data_ref_dependence): Also call vect_preserves_scalar_order_p for negative dependence distance. * gcc.dg/vect/vect-pr127407.c: New testcase. (cherry picked from commit b0fcf6cab6b44d916992f17297d7c248d64469dc)
