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mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"Instruments those things that needed to be instrumented\nin order to develop predicated tails for basic block\nSLP (superword-level parallelism).\n\ngcc/ChangeLog:\n\n\t* tree-vect-loop.cc (vect_get_max_nscalars_per_iter): Dump the\n\tresult.\n\t(vect_verify_full_masking): Dump the number of vectors and\n\tnumber of scalars per iteration.\n\t* tree-vect-slp.cc (vect_prologue_cost_for_slp): Dump the SLP\n\ttree node's address, vector type and group size.\n\t* tree-vect-stmts.cc (vectorizable_conversion): Dump the vector\n\ttype inferred from the scalar type.\n\t(vectorizable_comparison_1): Dump the vector type guessed for\n\tan invariant comparison.\n\t(get_vectype_for_scalar_type): Dump the natural choice of\n\tvector type and instrument the fallback loop which searches for\n\ta narrower type.\n\t(vect_maybe_update_slp_op_vectype): Dump the new vector type\n\tand number of lanes of an operand when its vector type is\n\tupdated.\n\n---\n gcc/tree-vect-loop.cc | 10 ++++++++++\n gcc/tree-vect-slp.cc | 6 ++++++\n gcc/tree-vect-stmts.cc | 38 +++++++++++++++++++++++++++++++++++++-\n 3 files changed, 53 insertions(+), 1 deletion(-)","diff":"diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc\nindex b53ec83abc5..0b8a98a6160 100644\n--- a/gcc/tree-vect-loop.cc\n+++ b/gcc/tree-vect-loop.cc\n@@ -918,6 +918,11 @@ vect_get_max_nscalars_per_iter (loop_vec_info loop_vinfo)\n rgroup_controls *rgm;\n FOR_EACH_VEC_ELT (LOOP_VINFO_MASKS (loop_vinfo).rgc_vec, i, rgm)\n res = MAX (res, rgm->max_nscalars_per_iter);\n+\n+ if (dump_enabled_p ())\n+ dump_printf_loc (MSG_NOTE, vect_location, \"max_nscalars_per_iter=%u\\n\",\n+\t\t res);\n+\n return res;\n }\n \n@@ -1019,6 +1024,11 @@ vect_verify_full_masking (loop_vec_info loop_vinfo)\n unsigned int nscalars_per_iter\n \t = exact_div (nvectors * TYPE_VECTOR_SUBPARTS (vectype),\n \t\t LOOP_VINFO_VECT_FACTOR (loop_vinfo)).to_constant ();\n+ if (dump_enabled_p ())\n+\tdump_printf_loc (\n+\t MSG_NOTE, vect_location,\n+\t \"verify_full_masking: nvectors=%u, nscalars_per_iter=%u\\n\", nvectors,\n+\t nscalars_per_iter);\n \n if (rgm->max_nscalars_per_iter < nscalars_per_iter)\n \t{\ndiff --git a/gcc/tree-vect-slp.cc b/gcc/tree-vect-slp.cc\nindex 1ab3ae35a22..709510ed174 100644\n--- a/gcc/tree-vect-slp.cc\n+++ b/gcc/tree-vect-slp.cc\n@@ -8781,6 +8781,12 @@ vect_prologue_cost_for_slp (vec_info *vinfo, slp_tree node,\n When all elements are the same we can use a splat. */\n tree vectype = SLP_TREE_VECTYPE (node);\n unsigned group_size = SLP_TREE_SCALAR_OPS (node).length ();\n+ if (dump_enabled_p ())\n+ dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t \"vect_prologue_cost_for_slp: node %p, vector type %T, \"\n+\t\t \"group_size %u\\n\",\n+\t\t (void *) node, vectype, group_size);\n+\n unsigned HOST_WIDE_INT const_nunits;\n unsigned nelt_limit;\n unsigned nvectors = vect_get_num_copies (vinfo, node);\ndiff --git a/gcc/tree-vect-stmts.cc b/gcc/tree-vect-stmts.cc\nindex b462c82f7b2..37d219f588f 100644\n--- a/gcc/tree-vect-stmts.cc\n+++ b/gcc/tree-vect-stmts.cc\n@@ -5490,7 +5490,12 @@ vectorizable_conversion (vec_info *vinfo,\n /* If op0 is an external or constant def, infer the vector type\n from the scalar type. */\n if (!vectype_in)\n- vectype_in = get_vectype_for_scalar_type (vinfo, rhs_type, slp_node);\n+ {\n+ vectype_in = get_vectype_for_scalar_type (vinfo, rhs_type, slp_node);\n+ if (dump_enabled_p ())\n+\tdump_printf_loc (MSG_NOTE, vect_location, \"inferred vector type %T\\n\",\n+\t\t\t vectype_in);\n+ }\n \n if (!cost_vec)\n gcc_assert (vectype_in);\n@@ -12670,6 +12675,16 @@ vectorizable_comparison_1 (vec_info *vinfo, tree vectype,\n if (!vectype)\n {\n vectype = get_vectype_for_scalar_type (vinfo, TREE_TYPE (rhs1), slp_node);\n+ if (dump_enabled_p ())\n+\t{\n+\t if (vectype)\n+\t dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t\t \"invariant comparison, guessed type %T\\n\",\n+\t\t\t vectype);\n+\t else\n+\t dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t\t \"invariant comparison, no usable vector type\\n\");\n+\t}\n if (!vectype || maybe_ne (TYPE_VECTOR_SUBPARTS (vectype), nunits))\n \treturn false;\n }\n@@ -13644,7 +13659,19 @@ get_vectype_for_scalar_type (vec_info *vinfo, tree scalar_type,\n /* Register the natural choice of vector type, before the group size\n has been applied. */\n if (vectype)\n+ {\n+ if (dump_enabled_p ())\n+ dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t \"get_vectype_for_scalar_type: natural type for %T \"\n+\t\t \"(ignoring group size %u): %T\\n\",\n+\t\t scalar_type, group_size, vectype);\n vinfo->used_vector_modes.add (TYPE_MODE (vectype));\n+ }\n+ else if (dump_enabled_p ())\n+ dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t \"get_vectype_for_scalar_type: no natural type for %T \"\n+\t\t \"(ignoring group size %u)\\n\",\n+\t\t scalar_type, group_size);\n \n /* If the natural choice of vector type doesn't satisfy GROUP_SIZE,\n try again with an explicit number of elements. A vector type satisfies\n@@ -13677,6 +13704,11 @@ get_vectype_for_scalar_type (vec_info *vinfo, tree scalar_type,\n \t{\n \t vectype = get_related_vectype_for_scalar_type (vinfo->vector_mode,\n \t\t\t\t\t\t\t scalar_type, nunits);\n+\t if (dump_enabled_p ())\n+\t dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t\t \"get_vectype_for_scalar_type: trying %u elements \"\n+\t\t\t \"of type %T: %T\\n\",\n+\t\t\t nunits, scalar_type, vectype);\n \t nunits /= 2;\n \t}\n while (nunits > 1 && !vectype);\n@@ -14005,6 +14037,10 @@ vect_maybe_update_slp_op_vectype (vec_info *vinfo, slp_tree op, tree vectype)\n }\n \n SLP_TREE_VECTYPE (op) = vectype;\n+ if (dump_enabled_p ())\n+ dump_printf_loc (MSG_NOTE, vect_location,\n+\t\t \"updated vectype of operand %p with %u lanes to %T\\n\",\n+\t\t (void *) op, SLP_TREE_LANES (op), vectype);\n return true;\n }\n \n","prefixes":["v7","10/10"]}