Following is a revision of yesterday's PR50031 patch submission, modified per Richard's comments. Bootstrapped and tested with no regressions on powerpc64-linux. I've confirmed the same performance improvements in SPEC. OK for trunk?
Thanks, Bill 2012-02-09 Bill Schmidt <wschm...@linux.vnet.ibm.com> Ira Rosen <i...@il.ibm.com> PR tree-optimization/50031 * targhooks.c (default_builtin_vectorization_cost): Handle vec_promote_demote. * target.h (enum vect_cost_for_stmt): Add vec_promote_demote. * tree-vect-loop.c (vect_get_single_scalar_iteraion_cost): Handle all types of reduction and pattern statements. (vect_estimate_min_profitable_iters): Likewise. * tree-vect-stmts.c (vect_model_promotion_demotion_cost): New function. (vect_get_load_cost): Use vec_perm for permutations; add dump logic for explicit realigns. (vectorizable_conversion): Call vect_model_promotion_demotion_cost. * config/spu/spu.c (spu_builtin_vectorization_cost): Handle vec_promote_demote. * config/i386/i386.c (ix86_builtin_vectorization_cost): Likewise. * config/rs6000/rs6000.c (rs6000_builtin_vectorization_cost): Update vec_perm for VSX and handle vec_promote_demote. Index: gcc/targhooks.c =================================================================== --- gcc/targhooks.c (revision 183944) +++ gcc/targhooks.c (working copy) @@ -514,6 +514,7 @@ default_builtin_vectorization_cost (enum vect_cost case scalar_to_vec: case cond_branch_not_taken: case vec_perm: + case vec_promote_demote: return 1; case unaligned_load: Index: gcc/target.h =================================================================== --- gcc/target.h (revision 183944) +++ gcc/target.h (working copy) @@ -145,7 +145,8 @@ enum vect_cost_for_stmt scalar_to_vec, cond_branch_not_taken, cond_branch_taken, - vec_perm + vec_perm, + vec_promote_demote }; /* The target structure. This holds all the backend hooks. */ Index: gcc/tree-vect-loop.c =================================================================== --- gcc/tree-vect-loop.c (revision 183944) +++ gcc/tree-vect-loop.c (working copy) @@ -2417,7 +2417,8 @@ vect_get_single_scalar_iteraion_cost (loop_vec_inf if (stmt_info && !STMT_VINFO_RELEVANT_P (stmt_info) && (!STMT_VINFO_LIVE_P (stmt_info) - || STMT_VINFO_DEF_TYPE (stmt_info) != vect_reduction_def)) + || !VECTORIZABLE_CYCLE_DEF (STMT_VINFO_DEF_TYPE (stmt_info))) + && !STMT_VINFO_IN_PATTERN_P (stmt_info)) continue; if (STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt))) @@ -2564,15 +2565,48 @@ vect_estimate_min_profitable_iters (loop_vec_info { gimple stmt = gsi_stmt (si); stmt_vec_info stmt_info = vinfo_for_stmt (stmt); + + /* Translate the last statement in a pattern into the + related replacement statement. */ + if (STMT_VINFO_IN_PATTERN_P (stmt_info)) + { + stmt = STMT_VINFO_RELATED_STMT (stmt_info); + stmt_info = vinfo_for_stmt (stmt); + } + /* Skip stmts that are not vectorized inside the loop. */ if (!STMT_VINFO_RELEVANT_P (stmt_info) && (!STMT_VINFO_LIVE_P (stmt_info) - || STMT_VINFO_DEF_TYPE (stmt_info) != vect_reduction_def)) + || !VECTORIZABLE_CYCLE_DEF (STMT_VINFO_DEF_TYPE (stmt_info)))) continue; + vec_inside_cost += STMT_VINFO_INSIDE_OF_LOOP_COST (stmt_info) * factor; /* FIXME: for stmts in the inner-loop in outer-loop vectorization, some of the "outside" costs are generated inside the outer-loop. */ vec_outside_cost += STMT_VINFO_OUTSIDE_OF_LOOP_COST (stmt_info); + if (is_pattern_stmt_p (stmt_info) + && STMT_VINFO_PATTERN_DEF_SEQ (stmt_info)) + { + gimple_stmt_iterator gsi; + + for (gsi = gsi_start (STMT_VINFO_PATTERN_DEF_SEQ (stmt_info)); + !gsi_end_p (gsi); gsi_next (&gsi)) + { + gimple pattern_def_stmt = gsi_stmt (gsi); + stmt_vec_info pattern_def_stmt_info + = vinfo_for_stmt (pattern_def_stmt); + if (STMT_VINFO_RELEVANT_P (pattern_def_stmt_info) + || STMT_VINFO_LIVE_P (pattern_def_stmt_info)) + { + vec_inside_cost + += STMT_VINFO_INSIDE_OF_LOOP_COST + (pattern_def_stmt_info) * factor; + vec_outside_cost + += STMT_VINFO_OUTSIDE_OF_LOOP_COST + (pattern_def_stmt_info); + } + } + } } } Index: gcc/tree-vect-stmts.c =================================================================== --- gcc/tree-vect-stmts.c (revision 183944) +++ gcc/tree-vect-stmts.c (working copy) @@ -811,6 +811,46 @@ vect_model_simple_cost (stmt_vec_info stmt_info, i } +/* Model cost for type demotion and promotion operations. PWR is normally + zero for single-step promotions and demotions. It will be one if + two-step promotion/demotion is required, and so on. Each additional + step doubles the number of instructions required. */ + +static void +vect_model_promotion_demotion_cost (stmt_vec_info stmt_info, + enum vect_def_type *dt, int pwr) +{ + int i, tmp; + int inside_cost = 0, outside_cost = 0, single_stmt_cost; + + /* The SLP costs were already calculated during SLP tree build. */ + if (PURE_SLP_STMT (stmt_info)) + return; + + single_stmt_cost = vect_get_stmt_cost (vec_promote_demote); + for (i = 0; i < pwr + 1; i++) + { + tmp = (STMT_VINFO_TYPE (stmt_info) == type_promotion_vec_info_type) ? + (i + 1) : i; + inside_cost += vect_pow2 (tmp) * single_stmt_cost; + } + + /* FORNOW: Assuming maximum 2 args per stmts. */ + for (i = 0; i < 2; i++) + { + if (dt[i] == vect_constant_def || dt[i] == vect_external_def) + outside_cost += vect_get_stmt_cost (vector_stmt); + } + + if (vect_print_dump_info (REPORT_COST)) + fprintf (vect_dump, "vect_model_promotion_demotion_cost: inside_cost = %d, " + "outside_cost = %d .", inside_cost, outside_cost); + + /* Set the costs in STMT_INFO. */ + stmt_vinfo_set_inside_of_loop_cost (stmt_info, NULL, inside_cost); + stmt_vinfo_set_outside_of_loop_cost (stmt_info, NULL, outside_cost); +} + /* Function vect_cost_strided_group_size For strided load or store, return the group_size only if it is the first @@ -887,7 +927,6 @@ vect_model_store_cost (stmt_vec_info stmt_info, in if (vect_print_dump_info (REPORT_COST)) fprintf (vect_dump, "vect_model_store_cost: strided group_size = %d .", group_size); - } /* Costs of the stores. */ @@ -1049,7 +1088,7 @@ vect_get_load_cost (struct data_reference *dr, int case dr_explicit_realign: { *inside_cost += ncopies * (2 * vect_get_stmt_cost (vector_load) - + vect_get_stmt_cost (vector_stmt)); + + vect_get_stmt_cost (vec_perm)); /* FIXME: If the misalignment remains fixed across the iterations of the containing loop, the following cost should be added to the @@ -1057,6 +1096,9 @@ vect_get_load_cost (struct data_reference *dr, int if (targetm.vectorize.builtin_mask_for_load) *inside_cost += vect_get_stmt_cost (vector_stmt); + if (vect_print_dump_info (REPORT_COST)) + fprintf (vect_dump, "vect_model_load_cost: explicit realign"); + break; } case dr_explicit_realign_optimized: @@ -1080,7 +1122,12 @@ vect_get_load_cost (struct data_reference *dr, int } *inside_cost += ncopies * (vect_get_stmt_cost (vector_load) - + vect_get_stmt_cost (vector_stmt)); + + vect_get_stmt_cost (vec_perm)); + + if (vect_print_dump_info (REPORT_COST)) + fprintf (vect_dump, + "vect_model_load_cost: explicit realign optimized"); + break; } @@ -2392,16 +2439,19 @@ vectorizable_conversion (gimple stmt, gimple_stmt_ if (vect_print_dump_info (REPORT_DETAILS)) fprintf (vect_dump, "=== vectorizable_conversion ==="); if (code == FIX_TRUNC_EXPR || code == FLOAT_EXPR) - STMT_VINFO_TYPE (stmt_info) = type_conversion_vec_info_type; + { + STMT_VINFO_TYPE (stmt_info) = type_conversion_vec_info_type; + vect_model_simple_cost (stmt_info, ncopies, dt, NULL); + } else if (modifier == NARROW) { STMT_VINFO_TYPE (stmt_info) = type_demotion_vec_info_type; - vect_model_simple_cost (stmt_info, ncopies, dt, NULL); + vect_model_promotion_demotion_cost (stmt_info, dt, multi_step_cvt); } else { STMT_VINFO_TYPE (stmt_info) = type_promotion_vec_info_type; - vect_model_simple_cost (stmt_info, 2 * ncopies, dt, NULL); + vect_model_promotion_demotion_cost (stmt_info, dt, multi_step_cvt); } VEC_free (tree, heap, interm_types); return true; Index: gcc/config/spu/spu.c =================================================================== --- gcc/config/spu/spu.c (revision 183944) +++ gcc/config/spu/spu.c (working copy) @@ -6920,6 +6920,7 @@ spu_builtin_vectorization_cost (enum vect_cost_for case scalar_to_vec: case cond_branch_not_taken: case vec_perm: + case vec_promote_demote: return 1; case scalar_store: Index: gcc/config/i386/i386.c =================================================================== --- gcc/config/i386/i386.c (revision 183944) +++ gcc/config/i386/i386.c (working copy) @@ -35336,6 +35336,7 @@ ix86_builtin_vectorization_cost (enum vect_cost_fo return ix86_cost->cond_not_taken_branch_cost; case vec_perm: + case vec_promote_demote: return ix86_cost->vec_stmt_cost; default: Index: gcc/config/rs6000/rs6000.c =================================================================== --- gcc/config/rs6000/rs6000.c (revision 183944) +++ gcc/config/rs6000/rs6000.c (working copy) @@ -3543,10 +3543,17 @@ rs6000_builtin_vectorization_cost (enum vect_cost_ return 1; case vec_perm: - if (!TARGET_VSX) + if (TARGET_VSX) + return 4; + else return 1; - return 2; + case vec_promote_demote: + if (TARGET_VSX) + return 5; + else + return 1; + case cond_branch_taken: return 3;