Return the increment stmt that updates the pointer in PTR_INCR.
- 3. Set INV_P to true if the access pattern of the data reference in the
- vectorized loop is invariant. Set it to false otherwise.
-
- 4. Return the pointer. */
+ 3. Return the pointer. */
tree
vect_create_data_ref_ptr (stmt_vec_info stmt_info, tree aggr_type,
struct loop *at_loop, tree offset,
tree *initial_address, gimple_stmt_iterator *gsi,
- gimple **ptr_incr, bool only_init, bool *inv_p,
+ gimple **ptr_incr, bool only_init,
tree byte_offset, tree iv_step)
{
const char *base_name;
bool insert_after;
tree indx_before_incr, indx_after_incr;
gimple *incr;
- tree step;
bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_info);
gcc_assert (iv_step != NULL_TREE
*ptr_incr = NULL;
}
- /* Check the step (evolution) of the load in LOOP, and record
- whether it's invariant. */
- step = vect_dr_behavior (dr_info)->step;
- if (integer_zerop (step))
- *inv_p = true;
- else
- *inv_p = false;
-
/* Create an expression for the first address accessed by this load
in LOOP. */
base_name = get_name (DR_BASE_ADDRESS (dr));
aptr = aggr_ptr_init;
else
{
+ /* Accesses to invariant addresses should be handled specially
+ by the caller. */
+ tree step = vect_dr_behavior (dr_info)->step;
+ gcc_assert (!integer_zerop (step));
+
if (iv_step == NULL_TREE)
{
- /* The step of the aggregate pointer is the type size. */
+ /* The step of the aggregate pointer is the type size,
+ negated for downward accesses. */
iv_step = TYPE_SIZE_UNIT (aggr_type);
- /* One exception to the above is when the scalar step of the load in
- LOOP is zero. In this case the step here is also zero. */
- if (*inv_p)
- iv_step = size_zero_node;
- else if (tree_int_cst_sgn (step) == -1)
+ if (tree_int_cst_sgn (step) == -1)
iv_step = fold_build1 (NEGATE_EXPR, TREE_TYPE (iv_step), iv_step);
}
gphi *phi_stmt;
tree msq = NULL_TREE;
gimple_seq stmts = NULL;
- bool inv_p;
bool compute_in_loop = false;
bool nested_in_vect_loop = false;
struct loop *containing_loop = (gimple_bb (stmt_info->stmt))->loop_father;
vec_dest = vect_create_destination_var (scalar_dest, vectype);
ptr = vect_create_data_ref_ptr (stmt_info, vectype,
loop_for_initial_load, NULL_TREE,
- &init_addr, NULL, &inc, true, &inv_p);
+ &init_addr, NULL, &inc, true);
if (TREE_CODE (ptr) == SSA_NAME)
new_temp = copy_ssa_name (ptr);
else
unsigned int group_size, i;
vec<tree> oprnds = vNULL;
vec<tree> result_chain = vNULL;
- bool inv_p;
tree offset = NULL_TREE;
vec<tree> vec_oprnds = vNULL;
bool slp = (slp_node != NULL);
{
dataref_ptr = unshare_expr (DR_BASE_ADDRESS (first_dr_info->dr));
dataref_offset = build_int_cst (ref_type, 0);
- inv_p = false;
}
else if (STMT_VINFO_GATHER_SCATTER_P (stmt_info))
- {
- vect_get_gather_scatter_ops (loop, stmt_info, &gs_info,
- &dataref_ptr, &vec_offset);
- inv_p = false;
- }
+ vect_get_gather_scatter_ops (loop, stmt_info, &gs_info,
+ &dataref_ptr, &vec_offset);
else
dataref_ptr
= vect_create_data_ref_ptr (first_stmt_info, aggr_type,
simd_lane_access_p ? loop : NULL,
offset, &dummy, gsi, &ptr_incr,
- simd_lane_access_p, &inv_p,
- NULL_TREE, bump);
- gcc_assert (bb_vinfo || !inv_p);
+ simd_lane_access_p, NULL_TREE, bump);
}
else
{
bool grouped_load = false;
stmt_vec_info first_stmt_info;
stmt_vec_info first_stmt_info_for_drptr = NULL;
- bool inv_p;
bool compute_in_loop = false;
struct loop *at_loop;
int vec_num;
return true;
}
+ if (memory_access_type == VMAT_INVARIANT)
+ {
+ gcc_assert (!grouped_load && !mask && !bb_vinfo);
+ /* If we have versioned for aliasing or the loop doesn't
+ have any data dependencies that would preclude this,
+ then we are sure this is a loop invariant load and
+ thus we can insert it on the preheader edge. */
+ bool hoist_p = (LOOP_VINFO_NO_DATA_DEPENDENCIES (loop_vinfo)
+ && !nested_in_vect_loop
+ && hoist_defs_of_uses (stmt_info, loop));
+ if (hoist_p)
+ {
+ gassign *stmt = as_a <gassign *> (stmt_info->stmt);
+ if (dump_enabled_p ())
+ {
+ dump_printf_loc (MSG_NOTE, vect_location,
+ "hoisting out of the vectorized loop: ");
+ dump_gimple_stmt (MSG_NOTE, TDF_SLIM, stmt, 0);
+ }
+ scalar_dest = copy_ssa_name (scalar_dest);
+ tree rhs = unshare_expr (gimple_assign_rhs1 (stmt));
+ gsi_insert_on_edge_immediate
+ (loop_preheader_edge (loop),
+ gimple_build_assign (scalar_dest, rhs));
+ }
+ /* These copies are all equivalent, but currently the representation
+ requires a separate STMT_VINFO_VEC_STMT for each one. */
+ prev_stmt_info = NULL;
+ gimple_stmt_iterator gsi2 = *gsi;
+ gsi_next (&gsi2);
+ for (j = 0; j < ncopies; j++)
+ {
+ stmt_vec_info new_stmt_info;
+ if (hoist_p)
+ {
+ new_temp = vect_init_vector (stmt_info, scalar_dest,
+ vectype, NULL);
+ gimple *new_stmt = SSA_NAME_DEF_STMT (new_temp);
+ new_stmt_info = vinfo->add_stmt (new_stmt);
+ }
+ else
+ {
+ new_temp = vect_init_vector (stmt_info, scalar_dest,
+ vectype, &gsi2);
+ new_stmt_info = vinfo->lookup_def (new_temp);
+ }
+ if (slp)
+ SLP_TREE_VEC_STMTS (slp_node).quick_push (new_stmt_info);
+ else if (j == 0)
+ STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt_info;
+ else
+ STMT_VINFO_RELATED_STMT (prev_stmt_info) = new_stmt_info;
+ prev_stmt_info = new_stmt_info;
+ }
+ return true;
+ }
+
if (memory_access_type == VMAT_ELEMENTWISE
|| memory_access_type == VMAT_STRIDED_SLP)
{
{
dataref_ptr = unshare_expr (DR_BASE_ADDRESS (first_dr_info->dr));
dataref_offset = build_int_cst (ref_type, 0);
- inv_p = false;
}
else if (first_stmt_info_for_drptr
&& first_stmt_info != first_stmt_info_for_drptr)
= vect_create_data_ref_ptr (first_stmt_info_for_drptr,
aggr_type, at_loop, offset, &dummy,
gsi, &ptr_incr, simd_lane_access_p,
- &inv_p, byte_offset, bump);
+ byte_offset, bump);
/* Adjust the pointer by the difference to first_stmt. */
data_reference_p ptrdr
= STMT_VINFO_DATA_REF (first_stmt_info_for_drptr);
stmt_info, diff);
}
else if (STMT_VINFO_GATHER_SCATTER_P (stmt_info))
- {
- vect_get_gather_scatter_ops (loop, stmt_info, &gs_info,
- &dataref_ptr, &vec_offset);
- inv_p = false;
- }
+ vect_get_gather_scatter_ops (loop, stmt_info, &gs_info,
+ &dataref_ptr, &vec_offset);
else
dataref_ptr
= vect_create_data_ref_ptr (first_stmt_info, aggr_type, at_loop,
offset, &dummy, gsi, &ptr_incr,
- simd_lane_access_p, &inv_p,
+ simd_lane_access_p,
byte_offset, bump);
if (mask)
vec_mask = vect_get_vec_def_for_operand (mask, stmt_info,
}
}
- /* 4. Handle invariant-load. */
- if (inv_p && !bb_vinfo)
- {
- gcc_assert (!grouped_load);
- /* If we have versioned for aliasing or the loop doesn't
- have any data dependencies that would preclude this,
- then we are sure this is a loop invariant load and
- thus we can insert it on the preheader edge. */
- if (LOOP_VINFO_NO_DATA_DEPENDENCIES (loop_vinfo)
- && !nested_in_vect_loop
- && hoist_defs_of_uses (stmt_info, loop))
- {
- gassign *stmt = as_a <gassign *> (stmt_info->stmt);
- if (dump_enabled_p ())
- {
- dump_printf_loc (MSG_NOTE, vect_location,
- "hoisting out of the vectorized "
- "loop: ");
- dump_gimple_stmt (MSG_NOTE, TDF_SLIM, stmt, 0);
- }
- tree tem = copy_ssa_name (scalar_dest);
- gsi_insert_on_edge_immediate
- (loop_preheader_edge (loop),
- gimple_build_assign (tem,
- unshare_expr
- (gimple_assign_rhs1 (stmt))));
- new_temp = vect_init_vector (stmt_info, tem,
- vectype, NULL);
- new_stmt = SSA_NAME_DEF_STMT (new_temp);
- new_stmt_info = vinfo->add_stmt (new_stmt);
- }
- else
- {
- gimple_stmt_iterator gsi2 = *gsi;
- gsi_next (&gsi2);
- new_temp = vect_init_vector (stmt_info, scalar_dest,
- vectype, &gsi2);
- new_stmt_info = vinfo->lookup_def (new_temp);
- }
- }
-
if (memory_access_type == VMAT_CONTIGUOUS_REVERSE)
{
tree perm_mask = perm_mask_for_reverse (vectype);
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