http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45720
--- Comment #2 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2010-10-03 05:41:44 UTC --- Author: hjl Date: Sun Oct 3 05:39:32 2010 New Revision: 164914 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164914 Log: Disallow negative steps in vectorizer. gcc/ 2010-10-02 H.J. Lu <hongjiu...@intel.com> PR tree-optimization/45720 PR tree-optimization/45764 * tree-vect-data-refs.c (vect_analyze_data_ref_access): Don't accept backwards consecutive accesses. (vect_create_data_ref_ptr): Disallow negative steps. * tree-vect-stmts.c (vectorizable_store): Allow negative steps. (perm_mask_for_reverse): Removed. (reverse_vec_elements): Likewise. (vectorizable_load): Don't hanle negative steps. gcc/testsuite/ 2010-10-02 H.J. Lu <hongjiu...@intel.com> PR tree-optimization/45720 PR tree-optimization/45764 * g++.dg/torture/pr45764.C: New. * gcc.dg/vect/pr43432.c: Xfail. * gcc.dg/vect/vect-114.c: Likewise. * gcc.dg/vect/vect-15.c: Likewise. Added: trunk/gcc/testsuite/g++.dg/torture/pr45764.C Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/vect/pr43432.c trunk/gcc/testsuite/gcc.dg/vect/vect-114.c trunk/gcc/testsuite/gcc.dg/vect/vect-15.c trunk/gcc/tree-vect-data-refs.c trunk/gcc/tree-vect-stmts.c --- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-10-21 10:03:49 UTC --- Likely a dup of PR45764 which has all the analysis.
