tree-vect-transform.c [plain text]
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "errors.h"
#include "ggc.h"
#include "tree.h"
#include "target.h"
#include "rtl.h"
#include "basic-block.h"
#include "diagnostic.h"
#include "tree-flow.h"
#include "tree-dump.h"
#include "timevar.h"
#include "cfgloop.h"
#include "expr.h"
#include "optabs.h"
#include "tree-data-ref.h"
#include "tree-chrec.h"
#include "tree-scalar-evolution.h"
#include "tree-vectorizer.h"
#include "langhooks.h"
#include "tree-pass.h"
#include "toplev.h"
static bool vect_transform_stmt (tree, block_stmt_iterator *);
static void vect_align_data_ref (tree);
static tree vect_create_destination_var (tree, tree);
static tree vect_create_data_ref_ptr
(tree, block_stmt_iterator *, tree, tree *, bool);
static tree vect_create_index_for_vector_ref (loop_vec_info);
static tree vect_create_addr_base_for_vector_ref (tree, tree *, tree);
static tree vect_get_new_vect_var (tree, enum vect_var_kind, const char *);
static tree vect_get_vec_def_for_operand (tree, tree);
static tree vect_init_vector (tree, tree);
static void vect_finish_stmt_generation
(tree stmt, tree vec_stmt, block_stmt_iterator *bsi);
static void vect_generate_tmps_on_preheader
(loop_vec_info, tree *, tree *, tree *);
static tree vect_build_loop_niters (loop_vec_info);
static void vect_update_ivs_after_vectorizer (loop_vec_info, tree, edge);
static tree vect_gen_niters_for_prolog_loop (loop_vec_info, tree);
static void vect_update_inits_of_dr (struct data_reference *, tree niters);
static void vect_update_inits_of_drs (loop_vec_info, tree);
static void vect_do_peeling_for_alignment (loop_vec_info, struct loops *);
static void vect_do_peeling_for_loop_bound
(loop_vec_info, tree *, struct loops *);
static tree
vect_get_new_vect_var (tree type, enum vect_var_kind var_kind, const char *name)
{
const char *prefix;
int prefix_len;
tree new_vect_var;
if (var_kind == vect_simple_var)
prefix = "vect_";
else
prefix = "vect_p";
prefix_len = strlen (prefix);
if (name)
new_vect_var = create_tmp_var (type, concat (prefix, name, NULL));
else
new_vect_var = create_tmp_var (type, prefix);
return new_vect_var;
}
static tree
vect_create_index_for_vector_ref (loop_vec_info loop_vinfo)
{
tree init, step;
block_stmt_iterator incr_bsi;
bool insert_after;
tree indx_before_incr, indx_after_incr;
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree incr;
init = integer_zero_node;
step = integer_one_node;
standard_iv_increment_position (loop, &incr_bsi, &insert_after);
create_iv (init, step, NULL_TREE, loop, &incr_bsi, insert_after,
&indx_before_incr, &indx_after_incr);
incr = bsi_stmt (incr_bsi);
get_stmt_operands (incr);
set_stmt_info (stmt_ann (incr), new_stmt_vec_info (incr, loop_vinfo));
return indx_before_incr;
}
static tree
vect_create_addr_base_for_vector_ref (tree stmt,
tree *new_stmt_list,
tree offset)
{
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info);
tree data_ref_base =
unshare_expr (STMT_VINFO_VECT_DR_BASE_ADDRESS (stmt_info));
tree base_name = build_fold_indirect_ref (data_ref_base);
tree ref = DR_REF (dr);
tree scalar_type = TREE_TYPE (ref);
tree scalar_ptr_type = build_pointer_type (scalar_type);
tree vec_stmt;
tree new_temp;
tree addr_base, addr_expr;
tree dest, new_stmt;
tree base_offset = unshare_expr (STMT_VINFO_VECT_INIT_OFFSET (stmt_info));
dest = create_tmp_var (TREE_TYPE (base_offset), "base_off");
add_referenced_tmp_var (dest);
base_offset = force_gimple_operand (base_offset, &new_stmt, false, dest);
append_to_statement_list_force (new_stmt, new_stmt_list);
if (offset)
{
tree tmp = create_tmp_var (TREE_TYPE (base_offset), "offset");
add_referenced_tmp_var (tmp);
offset = fold (build2 (MULT_EXPR, TREE_TYPE (offset), offset,
STMT_VINFO_VECT_STEP (stmt_info)));
base_offset = fold (build2 (PLUS_EXPR, TREE_TYPE (base_offset),
base_offset, offset));
base_offset = force_gimple_operand (base_offset, &new_stmt, false, tmp);
append_to_statement_list_force (new_stmt, new_stmt_list);
}
addr_base = fold (build2 (PLUS_EXPR, TREE_TYPE (data_ref_base), data_ref_base,
base_offset));
addr_expr = vect_get_new_vect_var (scalar_ptr_type, vect_pointer_var,
get_name (base_name));
add_referenced_tmp_var (addr_expr);
vec_stmt = build2 (MODIFY_EXPR, void_type_node, addr_expr, addr_base);
new_temp = make_ssa_name (addr_expr, vec_stmt);
TREE_OPERAND (vec_stmt, 0) = new_temp;
append_to_statement_list_force (vec_stmt, new_stmt_list);
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
fprintf (vect_dump, "created ");
print_generic_expr (vect_dump, vec_stmt, TDF_SLIM);
}
return new_temp;
}
static void
vect_align_data_ref (tree stmt)
{
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info);
gcc_assert (aligned_access_p (dr));
}
static tree
vect_create_data_ref_ptr (tree stmt, block_stmt_iterator *bsi, tree offset,
tree *initial_address, bool only_init)
{
tree base_name;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
tree vect_ptr_type;
tree vect_ptr;
tree tag;
v_may_def_optype v_may_defs = STMT_V_MAY_DEF_OPS (stmt);
v_must_def_optype v_must_defs = STMT_V_MUST_DEF_OPS (stmt);
vuse_optype vuses = STMT_VUSE_OPS (stmt);
int nvuses, nv_may_defs, nv_must_defs;
int i;
tree new_temp;
tree vec_stmt;
tree new_stmt_list = NULL_TREE;
tree idx;
edge pe = loop_preheader_edge (loop);
basic_block new_bb;
tree vect_ptr_init;
tree vectype_size;
tree ptr_update;
tree data_ref_ptr;
tree type, tmp, size;
base_name = build_fold_indirect_ref (unshare_expr (
STMT_VINFO_VECT_DR_BASE_ADDRESS (stmt_info)));
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
tree data_ref_base = base_name;
fprintf (vect_dump, "create array_ref of type: ");
print_generic_expr (vect_dump, vectype, TDF_SLIM);
if (TREE_CODE (data_ref_base) == VAR_DECL)
fprintf (vect_dump, " vectorizing a one dimensional array ref: ");
else if (TREE_CODE (data_ref_base) == ARRAY_REF)
fprintf (vect_dump, " vectorizing a multidimensional array ref: ");
else if (TREE_CODE (data_ref_base) == COMPONENT_REF)
fprintf (vect_dump, " vectorizing a record based array ref: ");
else if (TREE_CODE (data_ref_base) == SSA_NAME)
fprintf (vect_dump, " vectorizing a pointer ref: ");
print_generic_expr (vect_dump, base_name, TDF_SLIM);
}
vect_ptr_type = build_pointer_type (vectype);
vect_ptr = vect_get_new_vect_var (vect_ptr_type, vect_pointer_var,
get_name (base_name));
add_referenced_tmp_var (vect_ptr);
tag = STMT_VINFO_MEMTAG (stmt_info);
gcc_assert (tag);
get_var_ann (vect_ptr)->type_mem_tag = tag;
nvuses = NUM_VUSES (vuses);
nv_may_defs = NUM_V_MAY_DEFS (v_may_defs);
nv_must_defs = NUM_V_MUST_DEFS (v_must_defs);
for (i = 0; i < nvuses; i++)
{
tree use = VUSE_OP (vuses, i);
if (TREE_CODE (use) == SSA_NAME)
bitmap_set_bit (vars_to_rename, var_ann (SSA_NAME_VAR (use))->uid);
}
for (i = 0; i < nv_may_defs; i++)
{
tree def = V_MAY_DEF_RESULT (v_may_defs, i);
if (TREE_CODE (def) == SSA_NAME)
bitmap_set_bit (vars_to_rename, var_ann (SSA_NAME_VAR (def))->uid);
}
for (i = 0; i < nv_must_defs; i++)
{
tree def = V_MUST_DEF_RESULT (v_must_defs, i);
if (TREE_CODE (def) == SSA_NAME)
bitmap_set_bit (vars_to_rename, var_ann (SSA_NAME_VAR (def))->uid);
}
new_temp = vect_create_addr_base_for_vector_ref (stmt, &new_stmt_list,
offset);
pe = loop_preheader_edge (loop);
new_bb = bsi_insert_on_edge_immediate (pe, new_stmt_list);
gcc_assert (!new_bb);
*initial_address = new_temp;
vec_stmt = fold_convert (vect_ptr_type, new_temp);
vec_stmt = build2 (MODIFY_EXPR, void_type_node, vect_ptr, vec_stmt);
new_temp = make_ssa_name (vect_ptr, vec_stmt);
TREE_OPERAND (vec_stmt, 0) = new_temp;
new_bb = bsi_insert_on_edge_immediate (pe, vec_stmt);
gcc_assert (!new_bb);
vect_ptr_init = TREE_OPERAND (vec_stmt, 0);
if (only_init)
return vect_ptr_init;
idx = vect_create_index_for_vector_ref (loop_vinfo);
tmp = create_tmp_var (integer_type_node, "update");
add_referenced_tmp_var (tmp);
size = TYPE_SIZE (vect_ptr_type);
type = lang_hooks.types.type_for_size (tree_low_cst (size, 1), 1);
ptr_update = create_tmp_var (type, "update");
add_referenced_tmp_var (ptr_update);
vectype_size = TYPE_SIZE_UNIT (vectype);
vec_stmt = build2 (MULT_EXPR, integer_type_node, idx, vectype_size);
vec_stmt = build2 (MODIFY_EXPR, void_type_node, tmp, vec_stmt);
new_temp = make_ssa_name (tmp, vec_stmt);
TREE_OPERAND (vec_stmt, 0) = new_temp;
bsi_insert_before (bsi, vec_stmt, BSI_SAME_STMT);
vec_stmt = fold_convert (type, new_temp);
vec_stmt = build2 (MODIFY_EXPR, void_type_node, ptr_update, vec_stmt);
new_temp = make_ssa_name (ptr_update, vec_stmt);
TREE_OPERAND (vec_stmt, 0) = new_temp;
bsi_insert_before (bsi, vec_stmt, BSI_SAME_STMT);
vec_stmt = build2 (PLUS_EXPR, vect_ptr_type, vect_ptr_init, new_temp);
vec_stmt = build2 (MODIFY_EXPR, void_type_node, vect_ptr, vec_stmt);
new_temp = make_ssa_name (vect_ptr, vec_stmt);
TREE_OPERAND (vec_stmt, 0) = new_temp;
bsi_insert_before (bsi, vec_stmt, BSI_SAME_STMT);
data_ref_ptr = TREE_OPERAND (vec_stmt, 0);
return data_ref_ptr;
}
static tree
vect_create_destination_var (tree scalar_dest, tree vectype)
{
tree vec_dest;
const char *new_name;
gcc_assert (TREE_CODE (scalar_dest) == SSA_NAME);
new_name = get_name (scalar_dest);
if (!new_name)
new_name = "var_";
vec_dest = vect_get_new_vect_var (vectype, vect_simple_var, new_name);
add_referenced_tmp_var (vec_dest);
return vec_dest;
}
static tree
vect_init_vector (tree stmt, tree vector_var)
{
stmt_vec_info stmt_vinfo = vinfo_for_stmt (stmt);
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_vinfo);
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree new_var;
tree init_stmt;
tree vectype = STMT_VINFO_VECTYPE (stmt_vinfo);
tree vec_oprnd;
edge pe;
tree new_temp;
basic_block new_bb;
new_var = vect_get_new_vect_var (vectype, vect_simple_var, "cst_");
add_referenced_tmp_var (new_var);
init_stmt = build2 (MODIFY_EXPR, vectype, new_var, vector_var);
new_temp = make_ssa_name (new_var, init_stmt);
TREE_OPERAND (init_stmt, 0) = new_temp;
pe = loop_preheader_edge (loop);
new_bb = bsi_insert_on_edge_immediate (pe, init_stmt);
gcc_assert (!new_bb);
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
fprintf (vect_dump, "created new init_stmt: ");
print_generic_expr (vect_dump, init_stmt, TDF_SLIM);
}
vec_oprnd = TREE_OPERAND (init_stmt, 0);
return vec_oprnd;
}
static tree
vect_get_vec_def_for_operand (tree op, tree stmt)
{
tree vec_oprnd;
tree vec_stmt;
tree def_stmt;
stmt_vec_info def_stmt_info = NULL;
stmt_vec_info stmt_vinfo = vinfo_for_stmt (stmt);
tree vectype = STMT_VINFO_VECTYPE (stmt_vinfo);
int nunits = GET_MODE_NUNITS (TYPE_MODE (vectype));
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_vinfo);
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
basic_block bb;
tree vec_inv;
tree t = NULL_TREE;
tree def;
int i;
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
fprintf (vect_dump, "vect_get_vec_def_for_operand: ");
print_generic_expr (vect_dump, op, TDF_SLIM);
}
if (TREE_CODE (op) == INTEGER_CST || TREE_CODE (op) == REAL_CST)
{
tree vec_cst;
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "Create vector_cst. nunits = %d", nunits);
for (i = nunits - 1; i >= 0; --i)
{
t = tree_cons (NULL_TREE, op, t);
}
vec_cst = build_vector (vectype, t);
return vect_init_vector (stmt, vec_cst);
}
gcc_assert (TREE_CODE (op) == SSA_NAME);
def_stmt = SSA_NAME_DEF_STMT (op);
def_stmt_info = vinfo_for_stmt (def_stmt);
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
fprintf (vect_dump, "vect_get_vec_def_for_operand: def_stmt: ");
print_generic_expr (vect_dump, def_stmt, TDF_SLIM);
}
if (def_stmt_info)
{
vec_stmt = STMT_VINFO_VEC_STMT (def_stmt_info);
gcc_assert (vec_stmt);
vec_oprnd = TREE_OPERAND (vec_stmt, 0);
return vec_oprnd;
}
bb = bb_for_stmt (def_stmt);
if (TREE_CODE (def_stmt) == PHI_NODE && flow_bb_inside_loop_p (loop, bb))
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "reduction/induction - unsupported.");
internal_error ("no support for reduction/induction");
}
switch (TREE_CODE (def_stmt))
{
case PHI_NODE:
def = PHI_RESULT (def_stmt);
break;
case MODIFY_EXPR:
def = TREE_OPERAND (def_stmt, 0);
break;
case NOP_EXPR:
def = TREE_OPERAND (def_stmt, 0);
gcc_assert (IS_EMPTY_STMT (def_stmt));
def = op;
break;
default:
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
fprintf (vect_dump, "unsupported defining stmt: ");
print_generic_expr (vect_dump, def_stmt, TDF_SLIM);
}
internal_error ("unsupported defining stmt");
}
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "Create vector_inv.");
for (i = nunits - 1; i >= 0; --i)
{
t = tree_cons (NULL_TREE, def, t);
}
vec_inv = build_constructor (vectype, t);
return vect_init_vector (stmt, vec_inv);
}
static void
vect_finish_stmt_generation (tree stmt, tree vec_stmt, block_stmt_iterator *bsi)
{
bsi_insert_before (bsi, vec_stmt, BSI_SAME_STMT);
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
fprintf (vect_dump, "add new stmt: ");
print_generic_expr (vect_dump, vec_stmt, TDF_SLIM);
}
#ifdef ENABLE_CHECKING
gcc_assert (stmt == bsi_stmt (*bsi));
#endif
#ifdef USE_MAPPED_LOCATION
SET_EXPR_LOCATION (vec_stmt, EXPR_LOCUS (stmt));
#else
SET_EXPR_LOCUS (vec_stmt, EXPR_LOCUS (stmt));
#endif
}
bool
vectorizable_assignment (tree stmt, block_stmt_iterator *bsi, tree *vec_stmt)
{
tree vec_dest;
tree scalar_dest;
tree op;
tree vec_oprnd;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
tree new_temp;
if (TREE_CODE (stmt) != MODIFY_EXPR)
return false;
scalar_dest = TREE_OPERAND (stmt, 0);
if (TREE_CODE (scalar_dest) != SSA_NAME)
return false;
op = TREE_OPERAND (stmt, 1);
if (!vect_is_simple_use (op, loop_vinfo, NULL))
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "use not simple.");
return false;
}
if (!vec_stmt)
{
STMT_VINFO_TYPE (stmt_info) = assignment_vec_info_type;
return true;
}
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "transform assignment.");
vec_dest = vect_create_destination_var (scalar_dest, vectype);
op = TREE_OPERAND (stmt, 1);
vec_oprnd = vect_get_vec_def_for_operand (op, stmt);
*vec_stmt = build2 (MODIFY_EXPR, vectype, vec_dest, vec_oprnd);
new_temp = make_ssa_name (vec_dest, *vec_stmt);
TREE_OPERAND (*vec_stmt, 0) = new_temp;
vect_finish_stmt_generation (stmt, *vec_stmt, bsi);
return true;
}
bool
vectorizable_operation (tree stmt, block_stmt_iterator *bsi, tree *vec_stmt)
{
tree vec_dest;
tree scalar_dest;
tree operation;
tree op0, op1 = NULL;
tree vec_oprnd0, vec_oprnd1=NULL;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
int i;
enum tree_code code;
enum machine_mode vec_mode;
tree new_temp;
int op_type;
tree op;
optab optab;
if (TREE_CODE (stmt) != MODIFY_EXPR)
return false;
if (TREE_CODE (TREE_OPERAND (stmt, 0)) != SSA_NAME)
return false;
operation = TREE_OPERAND (stmt, 1);
code = TREE_CODE (operation);
optab = optab_for_tree_code (code, vectype);
op_type = TREE_CODE_LENGTH (code);
if (op_type != unary_op && op_type != binary_op)
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "num. args = %d (not unary/binary op).", op_type);
return false;
}
for (i = 0; i < op_type; i++)
{
op = TREE_OPERAND (operation, i);
if (!vect_is_simple_use (op, loop_vinfo, NULL))
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "use not simple.");
return false;
}
}
if (!optab)
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "no optab.");
return false;
}
vec_mode = TYPE_MODE (vectype);
if (optab->handlers[(int) vec_mode].insn_code == CODE_FOR_nothing)
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "op not supported by target.");
return false;
}
if (!vec_stmt)
{
STMT_VINFO_TYPE (stmt_info) = op_vec_info_type;
return true;
}
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "transform binary/unary operation.");
scalar_dest = TREE_OPERAND (stmt, 0);
vec_dest = vect_create_destination_var (scalar_dest, vectype);
op0 = TREE_OPERAND (operation, 0);
vec_oprnd0 = vect_get_vec_def_for_operand (op0, stmt);
if (op_type == binary_op)
{
op1 = TREE_OPERAND (operation, 1);
vec_oprnd1 = vect_get_vec_def_for_operand (op1, stmt);
}
if (op_type == binary_op)
*vec_stmt = build2 (MODIFY_EXPR, vectype, vec_dest,
build2 (code, vectype, vec_oprnd0, vec_oprnd1));
else
*vec_stmt = build2 (MODIFY_EXPR, vectype, vec_dest,
build1 (code, vectype, vec_oprnd0));
new_temp = make_ssa_name (vec_dest, *vec_stmt);
TREE_OPERAND (*vec_stmt, 0) = new_temp;
vect_finish_stmt_generation (stmt, *vec_stmt, bsi);
return true;
}
bool
vectorizable_store (tree stmt, block_stmt_iterator *bsi, tree *vec_stmt)
{
tree scalar_dest;
tree data_ref;
tree op;
tree vec_oprnd1;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
enum machine_mode vec_mode;
tree dummy;
enum dr_alignment_support alignment_support_cheme;
if (TREE_CODE (stmt) != MODIFY_EXPR)
return false;
scalar_dest = TREE_OPERAND (stmt, 0);
if (TREE_CODE (scalar_dest) != ARRAY_REF
&& TREE_CODE (scalar_dest) != INDIRECT_REF)
return false;
op = TREE_OPERAND (stmt, 1);
if (!vect_is_simple_use (op, loop_vinfo, NULL))
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "use not simple.");
return false;
}
vec_mode = TYPE_MODE (vectype);
if (mov_optab->handlers[(int)vec_mode].insn_code == CODE_FOR_nothing)
return false;
if (!STMT_VINFO_DATA_REF (stmt_info))
return false;
if (!vec_stmt)
{
STMT_VINFO_TYPE (stmt_info) = store_vec_info_type;
return true;
}
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "transform store");
alignment_support_cheme = vect_supportable_dr_alignment (dr);
gcc_assert (alignment_support_cheme);
gcc_assert (alignment_support_cheme = dr_aligned);
vec_oprnd1 = vect_get_vec_def_for_operand (op, stmt);
vect_align_data_ref (stmt);
data_ref = vect_create_data_ref_ptr (stmt, bsi, NULL_TREE, &dummy, false);
data_ref = build_fold_indirect_ref (data_ref);
*vec_stmt = build2 (MODIFY_EXPR, vectype, data_ref, vec_oprnd1);
vect_finish_stmt_generation (stmt, *vec_stmt, bsi);
return true;
}
bool
vectorizable_load (tree stmt, block_stmt_iterator *bsi, tree *vec_stmt)
{
tree scalar_dest;
tree vec_dest = NULL;
tree data_ref = NULL;
tree op;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
struct data_reference *dr = STMT_VINFO_DATA_REF (stmt_info);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
tree new_temp;
int mode;
tree init_addr;
tree new_stmt;
tree dummy;
basic_block new_bb;
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
edge pe = loop_preheader_edge (loop);
enum dr_alignment_support alignment_support_cheme;
if (TREE_CODE (stmt) != MODIFY_EXPR)
return false;
scalar_dest = TREE_OPERAND (stmt, 0);
if (TREE_CODE (scalar_dest) != SSA_NAME)
return false;
op = TREE_OPERAND (stmt, 1);
if (TREE_CODE (op) != ARRAY_REF && TREE_CODE (op) != INDIRECT_REF)
return false;
if (!STMT_VINFO_DATA_REF (stmt_info))
return false;
mode = (int) TYPE_MODE (vectype);
if (mov_optab->handlers[mode].insn_code == CODE_FOR_nothing)
{
if (vect_print_dump_info (REPORT_DETAILS, LOOP_LOC (loop_vinfo)))
fprintf (vect_dump, "Aligned load, but unsupported type.");
return false;
}
if (!vec_stmt)
{
STMT_VINFO_TYPE (stmt_info) = load_vec_info_type;
return true;
}
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "transform load.");
alignment_support_cheme = vect_supportable_dr_alignment (dr);
gcc_assert (alignment_support_cheme);
if (alignment_support_cheme == dr_aligned
|| alignment_support_cheme == dr_unaligned_supported)
{
vec_dest = vect_create_destination_var (scalar_dest, vectype);
data_ref = vect_create_data_ref_ptr (stmt, bsi, NULL_TREE, &dummy, false);
if (aligned_access_p (dr))
data_ref = build_fold_indirect_ref (data_ref);
else
{
int mis = DR_MISALIGNMENT (dr);
tree tmis = (mis == -1 ? size_zero_node : size_int (mis));
tmis = size_binop (MULT_EXPR, tmis, size_int(BITS_PER_UNIT));
data_ref = build2 (MISALIGNED_INDIRECT_REF, vectype, data_ref, tmis);
}
new_stmt = build2 (MODIFY_EXPR, vectype, vec_dest, data_ref);
new_temp = make_ssa_name (vec_dest, new_stmt);
TREE_OPERAND (new_stmt, 0) = new_temp;
vect_finish_stmt_generation (stmt, new_stmt, bsi);
}
else if (alignment_support_cheme == dr_unaligned_software_pipeline)
{
tree offset;
tree magic;
tree phi_stmt;
tree msq_init;
tree msq, lsq;
tree dataref_ptr;
tree params;
vec_dest = vect_create_destination_var (scalar_dest, vectype);
data_ref = vect_create_data_ref_ptr (stmt, bsi, NULL_TREE,
&init_addr, true);
data_ref = build1 (ALIGN_INDIRECT_REF, vectype, data_ref);
new_stmt = build2 (MODIFY_EXPR, vectype, vec_dest, data_ref);
new_temp = make_ssa_name (vec_dest, new_stmt);
TREE_OPERAND (new_stmt, 0) = new_temp;
new_bb = bsi_insert_on_edge_immediate (pe, new_stmt);
gcc_assert (!new_bb);
msq_init = TREE_OPERAND (new_stmt, 0);
offset = build_int_cst (integer_type_node,
GET_MODE_NUNITS (TYPE_MODE (vectype)));
offset = int_const_binop (MINUS_EXPR, offset, integer_one_node, 1);
vec_dest = vect_create_destination_var (scalar_dest, vectype);
dataref_ptr = vect_create_data_ref_ptr (stmt, bsi, offset, &dummy, false);
data_ref = build1 (ALIGN_INDIRECT_REF, vectype, dataref_ptr);
new_stmt = build2 (MODIFY_EXPR, vectype, vec_dest, data_ref);
new_temp = make_ssa_name (vec_dest, new_stmt);
TREE_OPERAND (new_stmt, 0) = new_temp;
vect_finish_stmt_generation (stmt, new_stmt, bsi);
lsq = TREE_OPERAND (new_stmt, 0);
if (targetm.vectorize.builtin_mask_for_load)
{
tree builtin_decl;
params = build_tree_list (NULL_TREE, init_addr);
vec_dest = vect_create_destination_var (scalar_dest, vectype);
builtin_decl = targetm.vectorize.builtin_mask_for_load ();
new_stmt = build_function_call_expr (builtin_decl, params);
new_stmt = build2 (MODIFY_EXPR, vectype, vec_dest, new_stmt);
new_temp = make_ssa_name (vec_dest, new_stmt);
TREE_OPERAND (new_stmt, 0) = new_temp;
new_bb = bsi_insert_on_edge_immediate (pe, new_stmt);
gcc_assert (!new_bb);
magic = TREE_OPERAND (new_stmt, 0);
mark_call_clobbered_vars_to_rename ();
}
else
{
magic = dataref_ptr;
}
vec_dest = vect_create_destination_var (scalar_dest, vectype);
msq = make_ssa_name (vec_dest, NULL_TREE);
phi_stmt = create_phi_node (msq, loop->header);
SSA_NAME_DEF_STMT (msq) = phi_stmt;
add_phi_arg (phi_stmt, msq_init, loop_preheader_edge (loop));
add_phi_arg (phi_stmt, lsq, loop_latch_edge (loop));
vec_dest = vect_create_destination_var (scalar_dest, vectype);
new_stmt = build3 (REALIGN_LOAD_EXPR, vectype, msq, lsq, magic);
new_stmt = build2 (MODIFY_EXPR, vectype, vec_dest, new_stmt);
new_temp = make_ssa_name (vec_dest, new_stmt);
TREE_OPERAND (new_stmt, 0) = new_temp;
vect_finish_stmt_generation (stmt, new_stmt, bsi);
}
else
gcc_unreachable ();
*vec_stmt = new_stmt;
return true;
}
static bool
vect_is_simple_cond (tree cond, loop_vec_info loop_vinfo)
{
tree lhs, rhs;
if (TREE_CODE_CLASS (TREE_CODE (cond)) != tcc_comparison)
return false;
lhs = TREE_OPERAND (cond, 0);
rhs = TREE_OPERAND (cond, 1);
if (TREE_CODE (lhs) == SSA_NAME)
{
tree lhs_def_stmt = SSA_NAME_DEF_STMT (lhs);
if (!vect_is_simple_use (lhs, loop_vinfo, &lhs_def_stmt))
return false;
}
else if (TREE_CODE (lhs) != INTEGER_CST && TREE_CODE (lhs) != REAL_CST)
return false;
if (TREE_CODE (rhs) == SSA_NAME)
{
tree rhs_def_stmt = SSA_NAME_DEF_STMT (rhs);
if (!vect_is_simple_use (rhs, loop_vinfo, &rhs_def_stmt))
return false;
}
else if (TREE_CODE (rhs) != INTEGER_CST && TREE_CODE (rhs) != REAL_CST)
return false;
return true;
}
bool
vectorizable_select (tree stmt, block_stmt_iterator *bsi, tree *vec_stmt)
{
tree scalar_dest = NULL_TREE;
tree vec_dest = NULL_TREE;
tree op = NULL_TREE;
tree cond_expr, then_clause, else_clause;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
tree vec_cond_lhs, vec_cond_rhs, vec_then_clause, vec_else_clause;
tree vec_compare, vec_cond_expr;
tree new_temp;
loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
enum machine_mode vec_mode;
if (TREE_CODE (stmt) != MODIFY_EXPR)
return false;
op = TREE_OPERAND (stmt, 1);
if (TREE_CODE (op) != COND_EXPR)
return false;
cond_expr = TREE_OPERAND (op, 0);
then_clause = TREE_OPERAND (op, 1);
else_clause = TREE_OPERAND (op, 2);
if (!vect_is_simple_cond (cond_expr, loop_vinfo))
return false;
if (TREE_CODE (then_clause) == SSA_NAME)
{
tree then_def_stmt = SSA_NAME_DEF_STMT (then_clause);
if (!vect_is_simple_use (then_clause, loop_vinfo, &then_def_stmt))
return false;
}
else if (TREE_CODE (then_clause) != INTEGER_CST
&& TREE_CODE (then_clause) != REAL_CST)
return false;
if (TREE_CODE (else_clause) == SSA_NAME)
{
tree else_def_stmt = SSA_NAME_DEF_STMT (else_clause);
if (!vect_is_simple_use (else_clause, loop_vinfo, &else_def_stmt))
return false;
}
else if (TREE_CODE (else_clause) != INTEGER_CST
&& TREE_CODE (else_clause) != REAL_CST)
return false;
vec_mode = TYPE_MODE (vectype);
if (!vec_stmt)
{
STMT_VINFO_TYPE (stmt_info) = select_vec_info_type;
return expand_vec_cond_expr_p (op, vec_mode);
}
scalar_dest = TREE_OPERAND (stmt, 0);
vec_dest = vect_create_destination_var (scalar_dest, vectype);
vec_cond_lhs = vect_get_vec_def_for_operand (TREE_OPERAND (cond_expr, 0), stmt);
vec_cond_rhs = vect_get_vec_def_for_operand (TREE_OPERAND (cond_expr, 1), stmt);
vec_then_clause = vect_get_vec_def_for_operand (then_clause, stmt);
vec_else_clause = vect_get_vec_def_for_operand (else_clause, stmt);
vec_compare = build2 (TREE_CODE (cond_expr), vectype,
vec_cond_lhs, vec_cond_rhs);
vec_cond_expr = build (VEC_COND_EXPR, vectype,
vec_compare, vec_then_clause, vec_else_clause);
*vec_stmt = build2 (MODIFY_EXPR, vectype, vec_dest, vec_cond_expr);
new_temp = make_ssa_name (vec_dest, *vec_stmt);
TREE_OPERAND (*vec_stmt, 0) = new_temp;
vect_finish_stmt_generation (stmt, *vec_stmt, bsi);
return true;
}
bool
vect_transform_stmt (tree stmt, block_stmt_iterator *bsi)
{
bool is_store = false;
tree vec_stmt = NULL_TREE;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
bool done;
switch (STMT_VINFO_TYPE (stmt_info))
{
case op_vec_info_type:
done = vectorizable_operation (stmt, bsi, &vec_stmt);
gcc_assert (done);
break;
case assignment_vec_info_type:
done = vectorizable_assignment (stmt, bsi, &vec_stmt);
gcc_assert (done);
break;
case load_vec_info_type:
done = vectorizable_load (stmt, bsi, &vec_stmt);
gcc_assert (done);
break;
case store_vec_info_type:
done = vectorizable_store (stmt, bsi, &vec_stmt);
gcc_assert (done);
is_store = true;
break;
case select_vec_info_type:
if (!vectorizable_select (stmt, bsi, &vec_stmt))
abort ();
break;
default:
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "stmt not supported.");
gcc_unreachable ();
}
STMT_VINFO_VEC_STMT (stmt_info) = vec_stmt;
return is_store;
}
static tree
vect_build_loop_niters (loop_vec_info loop_vinfo)
{
tree ni_name, stmt, var;
edge pe;
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree ni = unshare_expr (LOOP_VINFO_NITERS (loop_vinfo));
var = create_tmp_var (TREE_TYPE (ni), "niters");
add_referenced_tmp_var (var);
ni_name = force_gimple_operand (ni, &stmt, false, var);
pe = loop_preheader_edge (loop);
if (stmt)
{
basic_block new_bb = bsi_insert_on_edge_immediate (pe, stmt);
gcc_assert (!new_bb);
}
return ni_name;
}
static void
vect_generate_tmps_on_preheader (loop_vec_info loop_vinfo,
tree *ni_name_ptr,
tree *ratio_mult_vf_name_ptr,
tree *ratio_name_ptr)
{
edge pe;
basic_block new_bb;
tree stmt, ni_name;
tree var;
tree ratio_name;
tree ratio_mult_vf_name;
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree ni = LOOP_VINFO_NITERS (loop_vinfo);
int vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
tree log_vf = build_int_cst (unsigned_type_node, exact_log2 (vf));
pe = loop_preheader_edge (loop);
ni_name = vect_build_loop_niters (loop_vinfo);
var = create_tmp_var (TREE_TYPE (ni), "bnd");
add_referenced_tmp_var (var);
ratio_name = make_ssa_name (var, NULL_TREE);
stmt = build2 (MODIFY_EXPR, void_type_node, ratio_name,
build2 (RSHIFT_EXPR, TREE_TYPE (ni_name), ni_name, log_vf));
SSA_NAME_DEF_STMT (ratio_name) = stmt;
pe = loop_preheader_edge (loop);
new_bb = bsi_insert_on_edge_immediate (pe, stmt);
gcc_assert (!new_bb);
var = create_tmp_var (TREE_TYPE (ni), "ratio_mult_vf");
add_referenced_tmp_var (var);
ratio_mult_vf_name = make_ssa_name (var, NULL_TREE);
stmt = build2 (MODIFY_EXPR, void_type_node, ratio_mult_vf_name,
build2 (LSHIFT_EXPR, TREE_TYPE (ratio_name), ratio_name, log_vf));
SSA_NAME_DEF_STMT (ratio_mult_vf_name) = stmt;
pe = loop_preheader_edge (loop);
new_bb = bsi_insert_on_edge_immediate (pe, stmt);
gcc_assert (!new_bb);
*ni_name_ptr = ni_name;
*ratio_mult_vf_name_ptr = ratio_mult_vf_name;
*ratio_name_ptr = ratio_name;
return;
}
static void
vect_update_ivs_after_vectorizer (loop_vec_info loop_vinfo, tree niters,
edge update_e)
{
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
basic_block exit_bb = loop->exit_edges[0]->dest;
tree phi, phi1;
basic_block update_bb = update_e->dest;
gcc_assert (EDGE_COUNT (exit_bb->preds) == 1);
for (phi = phi_nodes (loop->header), phi1 = phi_nodes (update_bb);
phi && phi1;
phi = PHI_CHAIN (phi), phi1 = PHI_CHAIN (phi1))
{
tree access_fn = NULL;
tree evolution_part;
tree init_expr;
tree step_expr;
tree var, stmt, ni, ni_name;
block_stmt_iterator last_bsi;
if (!is_gimple_reg (SSA_NAME_VAR (PHI_RESULT (phi))))
{
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "virtual phi. skip.");
continue;
}
access_fn = analyze_scalar_evolution (loop, PHI_RESULT (phi));
gcc_assert (access_fn);
evolution_part =
unshare_expr (evolution_part_in_loop_num (access_fn, loop->num));
gcc_assert (evolution_part != NULL_TREE);
gcc_assert (!tree_is_chrec (evolution_part));
step_expr = evolution_part;
init_expr = unshare_expr (initial_condition_in_loop_num (access_fn,
loop->num));
ni = build2 (PLUS_EXPR, TREE_TYPE (init_expr),
build2 (MULT_EXPR, TREE_TYPE (niters),
niters, step_expr), init_expr);
var = create_tmp_var (TREE_TYPE (init_expr), "tmp");
add_referenced_tmp_var (var);
ni_name = force_gimple_operand (ni, &stmt, false, var);
last_bsi = bsi_last (exit_bb);
if (stmt)
bsi_insert_before (&last_bsi, stmt, BSI_SAME_STMT);
gcc_assert (PHI_ARG_DEF_FROM_EDGE (phi1, update_e) ==
PHI_ARG_DEF_FROM_EDGE (phi, EDGE_SUCC (loop->latch, 0)));
SET_PHI_ARG_DEF (phi1, update_e->dest_idx, ni_name);
}
}
static void
vect_do_peeling_for_loop_bound (loop_vec_info loop_vinfo, tree *ratio,
struct loops *loops)
{
tree ni_name, ratio_mult_vf_name;
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
struct loop *new_loop;
edge update_e;
#ifdef ENABLE_CHECKING
int loop_num;
#endif
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "=== vect_transtorm_for_unknown_loop_bound ===");
vect_generate_tmps_on_preheader (loop_vinfo, &ni_name,
&ratio_mult_vf_name, ratio);
loop->pre_header = loop_preheader_edge (loop)->src;
loop->pre_header_edges[0] = loop_preheader_edge (loop);
#ifdef ENABLE_CHECKING
loop_num = loop->num;
#endif
new_loop = slpeel_tree_peel_loop_to_edge (loop, loops, loop->exit_edges[0],
ratio_mult_vf_name, ni_name, false);
#ifdef ENABLE_CHECKING
gcc_assert (new_loop);
gcc_assert (loop_num == loop->num);
slpeel_verify_cfg_after_peeling (loop, new_loop);
#endif
if (EDGE_PRED (new_loop->pre_header, 0)->src == loop->exit_edges[0]->dest)
update_e = EDGE_PRED (new_loop->pre_header, 0);
else
update_e = EDGE_PRED (new_loop->pre_header, 1);
vect_update_ivs_after_vectorizer (loop_vinfo, ratio_mult_vf_name, update_e);
scev_reset ();
return;
}
static tree
vect_gen_niters_for_prolog_loop (loop_vec_info loop_vinfo, tree loop_niters)
{
struct data_reference *dr = LOOP_VINFO_UNALIGNED_DR (loop_vinfo);
int vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree var, stmt;
tree iters, iters_name;
edge pe;
basic_block new_bb;
tree dr_stmt = DR_STMT (dr);
stmt_vec_info stmt_info = vinfo_for_stmt (dr_stmt);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
int vectype_align = TYPE_ALIGN (vectype) / BITS_PER_UNIT;
tree elem_misalign;
tree byte_misalign;
tree new_stmts = NULL_TREE;
tree start_addr =
vect_create_addr_base_for_vector_ref (dr_stmt, &new_stmts, NULL_TREE);
tree ptr_type = TREE_TYPE (start_addr);
tree size = TYPE_SIZE (ptr_type);
tree type = lang_hooks.types.type_for_size (tree_low_cst (size, 1), 1);
tree vectype_size_minus_1 = build_int_cst (type, vectype_align - 1);
tree vf_minus_1 = build_int_cst (unsigned_type_node, vf - 1);
tree niters_type = TREE_TYPE (loop_niters);
tree elem_size_log =
build_int_cst (unsigned_type_node, exact_log2 (vectype_align/vf));
tree vf_tree = build_int_cst (unsigned_type_node, vf);
pe = loop_preheader_edge (loop);
new_bb = bsi_insert_on_edge_immediate (pe, new_stmts);
gcc_assert (!new_bb);
byte_misalign = build2 (BIT_AND_EXPR, type, start_addr, vectype_size_minus_1);
elem_misalign =
build2 (RSHIFT_EXPR, unsigned_type_node, byte_misalign, elem_size_log);
iters = build2 (MINUS_EXPR, unsigned_type_node, vf_tree, elem_misalign);
iters = build2 (BIT_AND_EXPR, unsigned_type_node, iters, vf_minus_1);
iters = fold_convert (niters_type, iters);
if (TREE_CODE (loop_niters) != INTEGER_CST)
iters = build2 (MIN_EXPR, niters_type, iters, loop_niters);
var = create_tmp_var (niters_type, "prolog_loop_niters");
add_referenced_tmp_var (var);
iters_name = force_gimple_operand (iters, &stmt, false, var);
pe = loop_preheader_edge (loop);
if (stmt)
{
basic_block new_bb = bsi_insert_on_edge_immediate (pe, stmt);
gcc_assert (!new_bb);
}
return iters_name;
}
static void
vect_update_inits_of_dr (struct data_reference *dr, tree niters)
{
stmt_vec_info stmt_info = vinfo_for_stmt (DR_STMT (dr));
tree offset = STMT_VINFO_VECT_INIT_OFFSET (stmt_info);
niters = fold (build2 (MULT_EXPR, TREE_TYPE (niters), niters,
STMT_VINFO_VECT_STEP (stmt_info)));
offset = fold (build2 (PLUS_EXPR, TREE_TYPE (offset), offset, niters));
STMT_VINFO_VECT_INIT_OFFSET (stmt_info) = offset;
}
static void
vect_update_inits_of_drs (loop_vec_info loop_vinfo, tree niters)
{
unsigned int i;
varray_type loop_write_datarefs = LOOP_VINFO_DATAREF_WRITES (loop_vinfo);
varray_type loop_read_datarefs = LOOP_VINFO_DATAREF_READS (loop_vinfo);
if (vect_dump && (dump_flags & TDF_DETAILS))
fprintf (vect_dump, "=== vect_update_inits_of_dr ===");
for (i = 0; i < VARRAY_ACTIVE_SIZE (loop_write_datarefs); i++)
{
struct data_reference *dr = VARRAY_GENERIC_PTR (loop_write_datarefs, i);
vect_update_inits_of_dr (dr, niters);
}
for (i = 0; i < VARRAY_ACTIVE_SIZE (loop_read_datarefs); i++)
{
struct data_reference *dr = VARRAY_GENERIC_PTR (loop_read_datarefs, i);
vect_update_inits_of_dr (dr, niters);
}
}
static void
vect_do_peeling_for_alignment (loop_vec_info loop_vinfo, struct loops *loops)
{
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree niters_of_prolog_loop, ni_name;
tree n_iters;
struct loop *new_loop;
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "=== vect_do_peeling_for_alignment ===");
ni_name = vect_build_loop_niters (loop_vinfo);
niters_of_prolog_loop = vect_gen_niters_for_prolog_loop (loop_vinfo, ni_name);
new_loop =
slpeel_tree_peel_loop_to_edge (loop, loops, loop_preheader_edge (loop),
niters_of_prolog_loop, ni_name, true);
#ifdef ENABLE_CHECKING
gcc_assert (new_loop);
slpeel_verify_cfg_after_peeling (new_loop, loop);
#endif
n_iters = LOOP_VINFO_NITERS (loop_vinfo);
LOOP_VINFO_NITERS (loop_vinfo) =
build2 (MINUS_EXPR, TREE_TYPE (n_iters), n_iters, niters_of_prolog_loop);
vect_update_inits_of_drs (loop_vinfo, niters_of_prolog_loop);
scev_reset ();
return;
}
void
vect_transform_loop (loop_vec_info loop_vinfo,
struct loops *loops ATTRIBUTE_UNUSED)
{
struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
basic_block *bbs = LOOP_VINFO_BBS (loop_vinfo);
int nbbs = loop->num_nodes;
block_stmt_iterator si;
int i;
tree ratio = NULL;
int vectorization_factor = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "=== vec_transform_loop ===");
if (LOOP_DO_PEELING_FOR_ALIGNMENT (loop_vinfo))
vect_do_peeling_for_alignment (loop_vinfo, loops);
if (!LOOP_VINFO_NITERS_KNOWN_P (loop_vinfo)
|| (LOOP_VINFO_NITERS_KNOWN_P (loop_vinfo)
&& LOOP_VINFO_INT_NITERS (loop_vinfo) % vectorization_factor != 0))
vect_do_peeling_for_loop_bound (loop_vinfo, &ratio, loops);
else
ratio = build_int_cst (TREE_TYPE (LOOP_VINFO_NITERS (loop_vinfo)),
LOOP_VINFO_INT_NITERS (loop_vinfo) / vectorization_factor);
gcc_assert (EDGE_COUNT (loop->header->preds) == 2);
loop_split_edge_with (loop_preheader_edge (loop), NULL);
for (i = 0; i < nbbs; i++)
{
basic_block bb = bbs[i];
for (si = bsi_start (bb); !bsi_end_p (si);)
{
tree stmt = bsi_stmt (si);
stmt_vec_info stmt_info;
bool is_store;
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
{
fprintf (vect_dump, "------>vectorizing statement: ");
print_generic_expr (vect_dump, stmt, TDF_SLIM);
}
stmt_info = vinfo_for_stmt (stmt);
gcc_assert (stmt_info);
if (!STMT_VINFO_RELEVANT_P (stmt_info))
{
bsi_next (&si);
continue;
}
#ifdef ENABLE_CHECKING
gcc_assert
(GET_MODE_NUNITS (TYPE_MODE (STMT_VINFO_VECTYPE (stmt_info)))
== vectorization_factor);
#endif
if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
fprintf (vect_dump, "transform statement.");
is_store = vect_transform_stmt (stmt, &si);
if (is_store)
{
stmt_ann_t ann = stmt_ann (stmt);
free (stmt_info);
set_stmt_info (ann, NULL);
bsi_remove (&si);
continue;
}
bsi_next (&si);
}
}
slpeel_make_loop_iterate_ntimes (loop, ratio);
if (vect_print_dump_info (REPORT_VECTORIZED_LOOPS, LOOP_LOC (loop_vinfo)))
fprintf (vect_dump, "LOOP VECTORIZED.");
}