------- Comment #3 from matz at gcc dot gnu dot org 2010-09-17 13:26 ------- Subject: Bug 43432
Author: matz Date: Fri Sep 17 13:26:43 2010 New Revision: 164367 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=164367 Log: PR tree-optimization/43432 * tree-vect-data-refs.c (vect_analyze_data_ref_access): Accept backwards consecutive accesses. (vect_create_data_ref_ptr): If step is negative generate decreasing IVs. * tree-vect-stmts.c (vectorizable_store): Reject negative steps. (perm_mask_for_reverse, reverse_vec_elements): New functions. (vectorizable_load): Handle loads with negative steps when easily possible. testsuite/ PR tree-optimization/43432 * lib/target-supports.exp (check_effective_target_vect_perm_byte, check_effective_target_vect_perm_short): New predicates. (check_effective_target_vect_perm): Include x86_64. * gcc.dg/vect/pr43432.c: New test. * gcc.dg/vect/vect-114.c: Adjust. * gcc.dg/vect/vect-15.c: Ditto. * gcc.dg/vect/slp-perm-8.c: Use new predicate. * gcc.dg/vect/slp-perm-9.c: Ditto. Added: trunk/gcc/testsuite/gcc.dg/vect/pr43432.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/vect/slp-perm-8.c trunk/gcc/testsuite/gcc.dg/vect/slp-perm-9.c trunk/gcc/testsuite/gcc.dg/vect/vect-114.c trunk/gcc/testsuite/gcc.dg/vect/vect-15.c trunk/gcc/testsuite/lib/target-supports.exp trunk/gcc/tree-vect-data-refs.c trunk/gcc/tree-vect-stmts.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43432
