OK to commit? Thanks, Bingfeng -----Original Message----- From: gcc-patches-ow...@gcc.gnu.org [mailto:gcc-patches-ow...@gcc.gnu.org] On Behalf Of Bingfeng Mei Sent: 18 December 2013 16:25 To: Jakub Jelinek Cc: Richard Biener; gcc-patches@gcc.gnu.org Subject: RE: [PATCH] Vectorization for store with negative step
Hi, Jakub, Sorry for all the formatting issues. Haven't submit a patch for a while :-). Please find the updated patch. Thanks, Bingfeng -----Original Message----- From: Jakub Jelinek [mailto:ja...@redhat.com] Sent: 18 December 2013 13:38 To: Bingfeng Mei Cc: Richard Biener; gcc-patches@gcc.gnu.org Subject: Re: [PATCH] Vectorization for store with negative step On Wed, Dec 18, 2013 at 01:31:05PM +0000, Bingfeng Mei wrote: Index: gcc/ChangeLog =================================================================== --- gcc/ChangeLog (revision 206016) +++ gcc/ChangeLog (working copy) @@ -1,3 +1,9 @@ +2013-12-18 Bingfeng Mei <b...@broadcom.com> + + PR tree-optimization/59544 + * tree-vect-stmts.c (perm_mask_for_reverse): Move before This should be a tab instead of 8 spaces. + vectorizable_store. (vectorizable_store): Handle negative step. Newline and tab after "store.", rather than space. Property changes on: gcc/testsuite/gcc.target/i386/pr59544.c ___________________________________________________________________ Added: svn:executable + * Please don't add such bogus property. Testcases aren't executable. Index: gcc/testsuite/ChangeLog =================================================================== --- gcc/testsuite/ChangeLog (revision 206016) +++ gcc/testsuite/ChangeLog (working copy) @@ -1,3 +1,8 @@ +2013-12-18 Bingfeng Mei <b...@broadcom.com> + + PR tree-optimization/59544 + * gcc.target/i386/pr59544.c: New test Missing dot at the end of line. + 2013-12-16 Jakub Jelinek <ja...@redhat.com> PR middle-end/58956 Index: gcc/tree-vect-stmts.c =================================================================== --- gcc/tree-vect-stmts.c (revision 206016) +++ gcc/tree-vect-stmts.c (working copy) @@ -4859,6 +4859,25 @@ ensure_base_align (stmt_vec_info stmt_in } +/* Given a vector type VECTYPE returns the VECTOR_CST mask that implements + reversal of the vector elements. If that is impossible to do, + returns NULL. */ + +static tree +perm_mask_for_reverse (tree vectype) +{ + int i, nunits; + unsigned char *sel; + + nunits = TYPE_VECTOR_SUBPARTS (vectype); + sel = XALLOCAVEC (unsigned char, nunits); + + for (i = 0; i < nunits; ++i) + sel[i] = nunits - 1 - i; + + return vect_gen_perm_mask (vectype, sel); +} + /* Function vectorizable_store. Check if STMT defines a non scalar data-ref (array/pointer/structure) that @@ -4902,6 +4921,8 @@ vectorizable_store (gimple stmt, gimple_ vec<tree> oprnds = vNULL; vec<tree> result_chain = vNULL; bool inv_p; + bool negative = false; + tree offset = NULL_TREE; vec<tree> vec_oprnds = vNULL; bool slp = (slp_node != NULL); unsigned int vec_num; @@ -4976,16 +4997,38 @@ vectorizable_store (gimple stmt, gimple_ if (!STMT_VINFO_DATA_REF (stmt_info)) return false; - if (tree_int_cst_compare (loop && nested_in_vect_loop_p (loop, stmt) - ? STMT_VINFO_DR_STEP (stmt_info) : DR_STEP (dr), - size_zero_node) < 0) + negative = tree_int_cst_compare (loop && nested_in_vect_loop_p (loop, stmt) + ? STMT_VINFO_DR_STEP (stmt_info) : DR_STEP (dr), + size_zero_node) < 0; The formatting looks wrong, do: negative = tree_int_cst_compare (loop && nested_in_vect_loop_p (loop, stmt) ? STMT_VINFO_DR_STEP (stmt_info) : DR_STEP (dr), size_zero_node) < 0; instead. + if (negative && ncopies > 1) { if (dump_enabled_p ()) dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, - "negative step for store.\n"); + "multiple types with negative step."); return false; } + if (negative) + { + gcc_assert (!grouped_store); + alignment_support_scheme = vect_supportable_dr_alignment (dr, false); + if (alignment_support_scheme != dr_aligned + && alignment_support_scheme != dr_unaligned_supported) Lots of places where you use 8 spaces instead of tab, please fix. + offset = size_int (-TYPE_VECTOR_SUBPARTS (vectype) + 1); + if (store_lanes_p) aggr_type = build_array_type_nelts (elem_type, vec_num * nunits); else @@ -5200,7 +5246,7 @@ vectorizable_store (gimple stmt, gimple_ dataref_ptr = vect_create_data_ref_ptr (first_stmt, aggr_type, simd_lane_access_p ? loop : NULL, - NULL_TREE, &dummy, gsi, &ptr_incr, + offset, &dummy, gsi, &ptr_incr, simd_lane_access_p, &inv_p); gcc_assert (bb_vinfo || !inv_p); } @@ -5306,6 +5352,21 @@ vectorizable_store (gimple stmt, gimple_ set_ptr_info_alignment (get_ptr_info (dataref_ptr), align, misalign); + if (negative) + { + tree perm_mask = perm_mask_for_reverse (vectype); + tree perm_dest = vect_create_destination_var (gimple_assign_rhs1 (stmt), vectype); + tree new_temp = make_ssa_name (perm_dest, NULL); + + /* Generate the permute statement. */ + gimple perm_stmt = gimple_build_assign_with_ops (VEC_PERM_EXPR, new_temp, + vec_oprnd, vec_oprnd, perm_mask); Too long lines. Jakub
patch_vec_store
Description: patch_vec_store
