On Thu, May 4, 2017 at 11:04 AM, Robin Dapp <rd...@linux.vnet.ibm.com> wrote: > Some refactoring and definitions to use for (unknown) DR_MISALIGNMENT,
+#define DR_HAS_NEGATIVE_STEP(DR) \ + tree_int_cst_compare (DR_STEP (DR), size_zero_node) < 0 this will ICE for non-constant DR_STEP so isn't a suitable define. If you want sth shorter than tree_int_cst_compare (...) < 0 then tree_int_cst_sgn (DR_STEP (..)) == -1 should work or compare_tree_int (DR_STEP (...), 0) < 0. But I'd rather leave this unchanged. The rest of the patch is ok. Thanks, Richard. > gcc/ChangeLog: > > 2017-04-26 Robin Dapp <rd...@linux.vnet.ibm.com> > > * tree-data-ref.h (struct data_reference): Create > DR_HAS_NEGATIVE_STEP. > * tree-vectorizer.h (dr_misalignment): Define DR_MISALIGNMENT. > * tree-vect-data-refs.c (vect_compute_data_ref_alignment): Use. > (vect_update_misalignment_for_peel): Use. > (vect_enhance_data_refs_alignment): Use. > (vect_no_alias_p): Use. > (vect_duplicate_ssa_name_ptr_info): Use. > (known_alignment_for_access_p): Use.
