#include "coretypes.h"
#include "dumpfile.h"
#include "tm.h"
-#include "hash-set.h"
-#include "machmode.h"
-#include "vec.h"
-#include "double-int.h"
-#include "input.h"
#include "alias.h"
#include "symtab.h"
-#include "wide-int.h"
-#include "inchash.h"
#include "tree.h"
#include "fold-const.h"
#include "stor-layout.h"
#include "tree-ssa-alias.h"
#include "internal-fn.h"
#include "gimple-expr.h"
-#include "is-a.h"
#include "gimple.h"
#include "gimple-iterator.h"
#include "gimple-ssa.h"
#include "tree-ssanames.h"
#include "tree-pass.h"
#include "cfgloop.h"
-#include "hashtab.h"
#include "rtl.h"
#include "flags.h"
-#include "statistics.h"
-#include "real.h"
-#include "fixed-value.h"
#include "insn-config.h"
#include "expmed.h"
#include "dojump.h"
oprnd_info = (*oprnds_info)[i];
if (!vect_is_simple_use (oprnd, NULL, loop_vinfo, bb_vinfo, &def_stmt,
- &def, &dt)
- || (!def_stmt && dt != vect_constant_def))
+ &def, &dt))
{
if (dump_enabled_p ())
{
dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
- "Build SLP failed: can't find def for ");
+ "Build SLP failed: can't analyze def for ");
dump_generic_expr (MSG_MISSED_OPTIMIZATION, TDF_SLIM, oprnd);
dump_printf (MSG_MISSED_OPTIMIZATION, "\n");
}
enum tree_code first_cond_code = ERROR_MARK;
tree lhs;
bool need_same_oprnds = false;
- tree vectype, scalar_type, first_op1 = NULL_TREE;
+ tree vectype = NULL_TREE, scalar_type, first_op1 = NULL_TREE;
optab optab;
int icode;
machine_mode optab_op2_mode;
machine_mode vec_mode;
- struct data_reference *first_dr;
HOST_WIDE_INT dummy;
- gimple first_load = NULL, prev_first_load = NULL, old_first_load = NULL;
+ gimple first_load = NULL, prev_first_load = NULL;
tree cond;
/* For every stmt in NODE find its def stmt/s. */
else
{
/* Load. */
- unsigned unrolling_factor
- = least_common_multiple
- (*max_nunits, group_size) / group_size;
- /* FORNOW: Check that there is no gap between the loads
- and no gap between the groups when we need to load
- multiple groups at once.
- ??? We should enhance this to only disallow gaps
- inside vectors. */
- if ((unrolling_factor > 1
- && ((GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)) == stmt
- && GROUP_GAP (vinfo_for_stmt (stmt)) != 0)
- /* If the group is split up then GROUP_GAP
- isn't correct here, nor is GROUP_FIRST_ELEMENT. */
- || GROUP_SIZE (vinfo_for_stmt (stmt)) > group_size))
- || (GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)) != stmt
- && GROUP_GAP (vinfo_for_stmt (stmt)) != 1))
- {
- if (dump_enabled_p ())
- {
- dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location,
- "Build SLP failed: grouped "
- "loads have gaps ");
- dump_gimple_stmt (MSG_MISSED_OPTIMIZATION, TDF_SLIM,
- stmt, 0);
- dump_printf (MSG_MISSED_OPTIMIZATION, "\n");
- }
- /* Fatal mismatch. */
- matches[0] = false;
- return false;
- }
-
/* Check that the size of interleaved loads group is not
greater than the SLP group size. */
unsigned ncopies
return false;
}
- old_first_load = first_load;
first_load = GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt));
if (prev_first_load)
{
}
else
prev_first_load = first_load;
-
- /* In some cases a group of loads is just the same load
- repeated N times. Only analyze its cost once. */
- if (first_load == stmt && old_first_load != first_load)
- {
- first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt));
- if (vect_supportable_dr_alignment (first_dr, false)
- == dr_unaligned_unsupported)
- {
- if (dump_enabled_p ())
- {
- dump_printf_loc (MSG_MISSED_OPTIMIZATION,
- vect_location,
- "Build SLP failed: unsupported "
- "unaligned load ");
- dump_gimple_stmt (MSG_MISSED_OPTIMIZATION, TDF_SLIM,
- stmt, 0);
- dump_printf (MSG_MISSED_OPTIMIZATION, "\n");
- }
- /* Fatal mismatch. */
- matches[0] = false;
- return false;
- }
- }
}
} /* Grouped access. */
else
vectorization_factor, matches,
npermutes, &this_tree_size, max_tree_size))
{
+ /* If we have all children of child built up from scalars then just
+ throw that away and build it up this node from scalars. */
+ if (!SLP_TREE_CHILDREN (child).is_empty ())
+ {
+ unsigned int j;
+ slp_tree grandchild;
+
+ FOR_EACH_VEC_ELT (SLP_TREE_CHILDREN (child), j, grandchild)
+ if (grandchild != NULL)
+ break;
+ if (!grandchild)
+ {
+ /* Roll back. */
+ *max_nunits = old_max_nunits;
+ loads->truncate (old_nloads);
+ FOR_EACH_VEC_ELT (SLP_TREE_CHILDREN (child), j, grandchild)
+ vect_free_slp_tree (grandchild);
+ SLP_TREE_CHILDREN (child).truncate (0);
+
+ dump_printf_loc (MSG_NOTE, vect_location,
+ "Building parent vector operands from "
+ "scalars instead\n");
+ oprnd_info->def_stmts = vNULL;
+ vect_free_slp_tree (child);
+ SLP_TREE_CHILDREN (*node).quick_push (NULL);
+ continue;
+ }
+ }
+
oprnd_info->def_stmts = vNULL;
SLP_TREE_CHILDREN (*node).quick_push (child);
continue;
for (j = 0; j < group_size; ++j)
if (!matches[j])
{
- gimple tem = oprnds_info[0]->def_stmts[j];
- oprnds_info[0]->def_stmts[j] = oprnds_info[1]->def_stmts[j];
- oprnds_info[1]->def_stmts[j] = tem;
+ std::swap (oprnds_info[0]->def_stmts[j],
+ oprnds_info[1]->def_stmts[j]);
dump_printf (MSG_NOTE, "%d ", j);
}
dump_printf (MSG_NOTE, "\n");
}
+/* Attempt to reorder stmts in a reduction chain so that we don't
+ require any load permutation. Return true if that was possible,
+ otherwise return false. */
+
+static bool
+vect_attempt_slp_rearrange_stmts (slp_instance slp_instn)
+{
+ unsigned int group_size = SLP_INSTANCE_GROUP_SIZE (slp_instn);
+ unsigned int i, j;
+ sbitmap load_index;
+ unsigned int lidx;
+ slp_tree node, load;
+
+ /* Compare all the permutation sequences to the first one. We know
+ that at least one load is permuted. */
+ node = SLP_INSTANCE_LOADS (slp_instn)[0];
+ if (!node->load_permutation.exists ())
+ return false;
+ for (i = 1; SLP_INSTANCE_LOADS (slp_instn).iterate (i, &load); ++i)
+ {
+ if (!load->load_permutation.exists ())
+ return false;
+ FOR_EACH_VEC_ELT (load->load_permutation, j, lidx)
+ if (lidx != node->load_permutation[j])
+ return false;
+ }
+
+ /* Check that the loads in the first sequence are different and there
+ are no gaps between them. */
+ load_index = sbitmap_alloc (group_size);
+ bitmap_clear (load_index);
+ FOR_EACH_VEC_ELT (node->load_permutation, i, lidx)
+ {
+ if (bitmap_bit_p (load_index, lidx))
+ {
+ sbitmap_free (load_index);
+ return false;
+ }
+ bitmap_set_bit (load_index, lidx);
+ }
+ for (i = 0; i < group_size; i++)
+ if (!bitmap_bit_p (load_index, i))
+ {
+ sbitmap_free (load_index);
+ return false;
+ }
+ sbitmap_free (load_index);
+
+ /* This permutation is valid for reduction. Since the order of the
+ statements in the nodes is not important unless they are memory
+ accesses, we can rearrange the statements in all the nodes
+ according to the order of the loads. */
+ vect_slp_rearrange_stmts (SLP_INSTANCE_TREE (slp_instn), group_size,
+ node->load_permutation);
+
+ /* We are done, no actual permutations need to be generated. */
+ FOR_EACH_VEC_ELT (SLP_INSTANCE_LOADS (slp_instn), i, node)
+ SLP_TREE_LOAD_PERMUTATION (node).release ();
+ return true;
+}
+
/* Check if the required load permutations in the SLP instance
SLP_INSTN are supported. */
{
unsigned int group_size = SLP_INSTANCE_GROUP_SIZE (slp_instn);
unsigned int i, j, k, next;
- sbitmap load_index;
slp_tree node;
gimple stmt, load, next_load, first_load;
struct data_reference *dr;
stmt = SLP_TREE_SCALAR_STMTS (node)[0];
/* Reduction (there are no data-refs in the root).
- In reduction chain the order of the loads is important. */
+ In reduction chain the order of the loads is not important. */
if (!STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt))
&& !GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)))
{
- slp_tree load;
- unsigned int lidx;
+ if (vect_attempt_slp_rearrange_stmts (slp_instn))
+ return true;
- /* Compare all the permutation sequences to the first one. We know
- that at least one load is permuted. */
- node = SLP_INSTANCE_LOADS (slp_instn)[0];
- if (!node->load_permutation.exists ())
- return false;
- for (i = 1; SLP_INSTANCE_LOADS (slp_instn).iterate (i, &load); ++i)
- {
- if (!load->load_permutation.exists ())
- return false;
- FOR_EACH_VEC_ELT (load->load_permutation, j, lidx)
- if (lidx != node->load_permutation[j])
- return false;
- }
-
- /* Check that the loads in the first sequence are different and there
- are no gaps between them. */
- load_index = sbitmap_alloc (group_size);
- bitmap_clear (load_index);
- FOR_EACH_VEC_ELT (node->load_permutation, i, lidx)
- {
- if (bitmap_bit_p (load_index, lidx))
- {
- sbitmap_free (load_index);
- return false;
- }
- bitmap_set_bit (load_index, lidx);
- }
- for (i = 0; i < group_size; i++)
- if (!bitmap_bit_p (load_index, i))
- {
- sbitmap_free (load_index);
- return false;
- }
- sbitmap_free (load_index);
-
- /* This permutation is valid for reduction. Since the order of the
- statements in the nodes is not important unless they are memory
- accesses, we can rearrange the statements in all the nodes
- according to the order of the loads. */
- vect_slp_rearrange_stmts (SLP_INSTANCE_TREE (slp_instn), group_size,
- node->load_permutation);
-
- /* We are done, no actual permutations need to be generated. */
- FOR_EACH_VEC_ELT (SLP_INSTANCE_LOADS (slp_instn), i, node)
- SLP_TREE_LOAD_PERMUTATION (node).release ();
- return true;
+ /* Fallthru to general load permutation handling. */
}
/* In basic block vectorization we allow any subchain of an interleaving
next_load = NULL;
FOR_EACH_VEC_ELT (SLP_TREE_SCALAR_STMTS (node), j, load)
{
- if (j != 0 && next_load != load)
+ if (j != 0
+ && (next_load != load
+ || GROUP_GAP (vinfo_for_stmt (load)) != 1))
{
subchain_p = false;
break;
return true;
}
- /* FORNOW: the only supported permutation is 0..01..1.. of length equal to
- GROUP_SIZE and where each sequence of same drs is of GROUP_SIZE length as
- well (unless it's reduction). */
- if (SLP_INSTANCE_LOADS (slp_instn).length () != group_size)
- return false;
- FOR_EACH_VEC_ELT (SLP_INSTANCE_LOADS (slp_instn), i, node)
- if (!node->load_permutation.exists ())
- return false;
-
- load_index = sbitmap_alloc (group_size);
- bitmap_clear (load_index);
- FOR_EACH_VEC_ELT (SLP_INSTANCE_LOADS (slp_instn), i, node)
- {
- unsigned int lidx = node->load_permutation[0];
- if (bitmap_bit_p (load_index, lidx))
- {
- sbitmap_free (load_index);
- return false;
- }
- bitmap_set_bit (load_index, lidx);
- FOR_EACH_VEC_ELT (node->load_permutation, j, k)
- if (k != lidx)
- {
- sbitmap_free (load_index);
- return false;
- }
- }
- for (i = 0; i < group_size; i++)
- if (!bitmap_bit_p (load_index, i))
- {
- sbitmap_free (load_index);
- return false;
- }
- sbitmap_free (load_index);
-
+ /* For loop vectorization verify we can generate the permutation. */
FOR_EACH_VEC_ELT (SLP_INSTANCE_LOADS (slp_instn), i, node)
if (node->load_permutation.exists ()
&& !vect_transform_slp_perm_load
(node, vNULL, NULL,
SLP_INSTANCE_UNROLLING_FACTOR (slp_instn), slp_instn, true))
return false;
+
return true;
}
scalar_stmts.safe_push (next);
next = GROUP_NEXT_ELEMENT (vinfo_for_stmt (next));
}
+ /* Mark the first element of the reduction chain as reduction to properly
+ transform the node. In the reduction analysis phase only the last
+ element of the chain is marked as reduction. */
+ if (!STMT_VINFO_GROUPED_ACCESS (vinfo_for_stmt (stmt)))
+ STMT_VINFO_DEF_TYPE (vinfo_for_stmt (stmt)) = vect_reduction_def;
}
else
{
this_load_permuted = true;
load_permutation.safe_push (load_place);
}
- if (!this_load_permuted)
+ if (!this_load_permuted
+ /* The load requires permutation when unrolling exposes
+ a gap either because the group is larger than the SLP
+ group-size or because there is a gap between the groups. */
+ && (unrolling_factor == 1
+ || (group_size == GROUP_SIZE (vinfo_for_stmt (first_stmt))
+ && GROUP_GAP (vinfo_for_stmt (first_stmt)) == 0)))
{
load_permutation.release ();
continue;
{
/* Check if a pure SLP stmt has uses in non-SLP stmts. */
gcc_checking_assert (PURE_SLP_STMT (stmt_vinfo));
+ /* We always get the pattern stmt here, but for immediate
+ uses we have to use the LHS of the original stmt. */
+ gcc_checking_assert (!STMT_VINFO_IN_PATTERN_P (stmt_vinfo));
+ if (STMT_VINFO_RELATED_STMT (stmt_vinfo))
+ stmt = STMT_VINFO_RELATED_STMT (stmt_vinfo);
if (TREE_CODE (gimple_op (stmt, 0)) == SSA_NAME)
FOR_EACH_IMM_USE_STMT (use_stmt, imm_iter, gimple_op (stmt, 0))
- if (gimple_bb (use_stmt)
- && flow_bb_inside_loop_p (loop, gimple_bb (use_stmt))
- && (use_vinfo = vinfo_for_stmt (use_stmt))
- && !STMT_SLP_TYPE (use_vinfo)
- && (STMT_VINFO_RELEVANT (use_vinfo)
- || VECTORIZABLE_CYCLE_DEF (STMT_VINFO_DEF_TYPE (use_vinfo))
- || (STMT_VINFO_IN_PATTERN_P (use_vinfo)
- && STMT_VINFO_RELATED_STMT (use_vinfo)
- && !STMT_SLP_TYPE (vinfo_for_stmt
- (STMT_VINFO_RELATED_STMT (use_vinfo)))))
- && !(gimple_code (use_stmt) == GIMPLE_PHI
- && STMT_VINFO_DEF_TYPE (use_vinfo) == vect_reduction_def))
- stype = hybrid;
+ {
+ if (!flow_bb_inside_loop_p (loop, gimple_bb (use_stmt)))
+ continue;
+ use_vinfo = vinfo_for_stmt (use_stmt);
+ if (STMT_VINFO_IN_PATTERN_P (use_vinfo)
+ && STMT_VINFO_RELATED_STMT (use_vinfo))
+ use_vinfo = vinfo_for_stmt (STMT_VINFO_RELATED_STMT (use_vinfo));
+ if (!STMT_SLP_TYPE (use_vinfo)
+ && (STMT_VINFO_RELEVANT (use_vinfo)
+ || VECTORIZABLE_CYCLE_DEF (STMT_VINFO_DEF_TYPE (use_vinfo)))
+ && !(gimple_code (use_stmt) == GIMPLE_PHI
+ && STMT_VINFO_DEF_TYPE (use_vinfo) == vect_reduction_def))
+ {
+ if (dump_enabled_p ())
+ {
+ dump_printf_loc (MSG_NOTE, vect_location, "use of SLP "
+ "def in non-SLP stmt: ");
+ dump_gimple_stmt (MSG_NOTE, TDF_SLIM, use_stmt, 0);
+ }
+ stype = hybrid;
+ }
+ }
}
- if (stype == hybrid)
+ if (stype == hybrid
+ && !HYBRID_SLP_STMT (stmt_vinfo))
{
if (dump_enabled_p ())
{
(s1, s2, ..., s8). We will create two vectors {s1, s2, s3, s4} and
{s5, s6, s7, s8}. */
- number_of_copies = least_common_multiple (nunits, group_size) / group_size;
+ number_of_copies = nunits * number_of_vectors / group_size;
number_of_places_left_in_vector = nunits;
elts = XALLOCAVEC (tree, nunits);
the created stmts must be inserted. */
static inline void
-vect_create_mask_and_perm (gimple stmt, gimple next_scalar_stmt,
+vect_create_mask_and_perm (gimple stmt,
tree mask, int first_vec_indx, int second_vec_indx,
gimple_stmt_iterator *gsi, slp_tree node,
tree vectype, vec<tree> dr_chain,
{
tree perm_dest;
gimple perm_stmt = NULL;
- stmt_vec_info next_stmt_info;
int i, stride;
tree first_vec, second_vec, data_ref;
first_vec_indx += stride;
second_vec_indx += stride;
}
-
- /* Mark the scalar stmt as vectorized. */
- next_stmt_info = vinfo_for_stmt (next_scalar_stmt);
- STMT_VINFO_VEC_STMT (next_stmt_info) = perm_stmt;
}
gimple stmt = SLP_TREE_SCALAR_STMTS (node)[0];
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
tree mask_element_type = NULL_TREE, mask_type;
- int i, j, k, nunits, vec_index = 0, scalar_index;
+ int i, j, k, nunits, vec_index = 0;
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
- gimple next_scalar_stmt;
int group_size = SLP_INSTANCE_GROUP_SIZE (slp_node_instance);
int first_mask_element;
int index, unroll_factor, current_mask_element, ncopies;
bool needs_first_vector = false;
machine_mode mode;
+ if (!STMT_VINFO_GROUPED_ACCESS (stmt_info))
+ return false;
+
+ stmt_info = vinfo_for_stmt (GROUP_FIRST_ELEMENT (stmt_info));
+
mode = TYPE_MODE (vectype);
if (!can_vec_perm_p (mode, false, NULL))
/* The number of vector stmts to generate based only on SLP_NODE_INSTANCE
unrolling factor. */
- orig_vec_stmts_num = group_size *
- SLP_INSTANCE_UNROLLING_FACTOR (slp_node_instance) / nunits;
+ orig_vec_stmts_num
+ = (STMT_VINFO_GROUP_SIZE (stmt_info)
+ * SLP_INSTANCE_UNROLLING_FACTOR (slp_node_instance)
+ + nunits - 1) / nunits;
if (orig_vec_stmts_num == 1)
only_one_vec = true;
relatively to SLP_NODE_INSTANCE unrolling factor. */
ncopies = vf / SLP_INSTANCE_UNROLLING_FACTOR (slp_node_instance);
- if (!STMT_VINFO_GROUPED_ACCESS (stmt_info))
- return false;
-
/* Generate permutation masks for every NODE. Number of masks for each NODE
is equal to GROUP_SIZE.
E.g., we have a group of three nodes with three loads from the same
{c2,a3,b3,c3}. */
{
- scalar_index = 0;
index = 0;
vect_stmts_counter = 0;
vec_index = 0;
for (k = 0; k < group_size; k++)
{
i = SLP_TREE_LOAD_PERMUTATION (node)[k];
- first_mask_element = i + j * group_size;
+ first_mask_element = i + j * STMT_VINFO_GROUP_SIZE (stmt_info);
if (!vect_get_mask_element (stmt, first_mask_element, 0,
nunits, only_one_vec, index,
mask, ¤t_mask_element,
second_vec_index = vec_index;
}
- next_scalar_stmt
- = SLP_TREE_SCALAR_STMTS (node)[scalar_index++];
-
- vect_create_mask_and_perm (stmt, next_scalar_stmt,
+ vect_create_mask_and_perm (stmt,
mask_vec, first_vec_index, second_vec_index,
gsi, node, vectype, dr_chain,
ncopies, vect_stmts_counter++);
for the scalar stmts in each node of the SLP tree. Number of vector
elements in one vector iteration is the number of scalar elements in
one scalar iteration (GROUP_SIZE) multiplied by VF divided by vector
- size. */
- vec_stmts_size = (vectorization_factor * group_size) / nunits;
+ size.
+ Unless this is a SLP reduction in which case the number of vector
+ stmts is equal to the number of vector stmts of the children. */
+ if (GROUP_FIRST_ELEMENT (stmt_info)
+ && !STMT_VINFO_GROUPED_ACCESS (stmt_info))
+ vec_stmts_size = SLP_TREE_NUMBER_OF_VEC_STMTS (SLP_TREE_CHILDREN (node)[0]);
+ else
+ vec_stmts_size = (vectorization_factor * group_size) / nunits;
if (!SLP_TREE_VEC_STMTS (node).exists ())
{
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