/* SLP - Basic Block Vectorization
- Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
- Foundation, Inc.
- Contributed by Dorit Naishlos <dorit@il.ibm.com>
+ Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
+ Free Software Foundation, Inc.
+ Contributed by Dorit Naishlos <dorit@il.ibm.com>
and Ira Rosen <irar@il.ibm.com>
This file is part of GCC.
#include "tree.h"
#include "target.h"
#include "basic-block.h"
-#include "diagnostic.h"
+#include "tree-pretty-print.h"
+#include "gimple-pretty-print.h"
#include "tree-flow.h"
#include "tree-dump.h"
#include "cfgloop.h"
#include "recog.h"
#include "optabs.h"
#include "tree-vectorizer.h"
+#include "langhooks.h"
+
+/* Extract the location of the basic block in the source code.
+ Return the basic block location if succeed and NULL if not. */
+
+LOC
+find_bb_location (basic_block bb)
+{
+ gimple stmt = NULL;
+ gimple_stmt_iterator si;
+
+ if (!bb)
+ return UNKNOWN_LOC;
+
+ for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si))
+ {
+ stmt = gsi_stmt (si);
+ if (gimple_location (stmt) != UNKNOWN_LOC)
+ return gimple_location (stmt);
+ }
+
+ return UNKNOWN_LOC;
+}
+
/* Recursively free the memory allocated for the SLP tree rooted at NODE. */
static void
vect_free_slp_tree (slp_tree node)
{
+ int i;
+ slp_void_p child;
+
if (!node)
return;
- if (SLP_TREE_LEFT (node))
- vect_free_slp_tree (SLP_TREE_LEFT (node));
-
- if (SLP_TREE_RIGHT (node))
- vect_free_slp_tree (SLP_TREE_RIGHT (node));
-
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_free_slp_tree ((slp_tree) child);
+
+ VEC_free (slp_void_p, heap, SLP_TREE_CHILDREN (node));
VEC_free (gimple, heap, SLP_TREE_SCALAR_STMTS (node));
-
+
if (SLP_TREE_VEC_STMTS (node))
VEC_free (gimple, heap, SLP_TREE_VEC_STMTS (node));
vect_free_slp_tree (SLP_INSTANCE_TREE (instance));
VEC_free (int, heap, SLP_INSTANCE_LOAD_PERMUTATION (instance));
VEC_free (slp_tree, heap, SLP_INSTANCE_LOADS (instance));
+ free (instance);
+}
+
+
+/* Create an SLP node for SCALAR_STMTS. */
+
+static slp_tree
+vect_create_new_slp_node (VEC (gimple, heap) *scalar_stmts)
+{
+ slp_tree node;
+ gimple stmt = VEC_index (gimple, scalar_stmts, 0);
+ unsigned int nops;
+
+ if (is_gimple_call (stmt))
+ nops = gimple_call_num_args (stmt);
+ else if (is_gimple_assign (stmt))
+ {
+ nops = gimple_num_ops (stmt) - 1;
+ if (gimple_assign_rhs_code (stmt) == COND_EXPR)
+ nops++;
+ }
+ else
+ return NULL;
+
+ node = XNEW (struct _slp_tree);
+ SLP_TREE_SCALAR_STMTS (node) = scalar_stmts;
+ SLP_TREE_VEC_STMTS (node) = NULL;
+ SLP_TREE_CHILDREN (node) = VEC_alloc (slp_void_p, heap, nops);
+ SLP_TREE_OUTSIDE_OF_LOOP_COST (node) = 0;
+ SLP_TREE_INSIDE_OF_LOOP_COST (node) = 0;
+
+ return node;
+}
+
+
+/* Allocate operands info for NOPS operands, and GROUP_SIZE def-stmts for each
+ operand. */
+static VEC (slp_oprnd_info, heap) *
+vect_create_oprnd_info (int nops, int group_size)
+{
+ int i;
+ slp_oprnd_info oprnd_info;
+ VEC (slp_oprnd_info, heap) *oprnds_info;
+
+ oprnds_info = VEC_alloc (slp_oprnd_info, heap, nops);
+ for (i = 0; i < nops; i++)
+ {
+ oprnd_info = XNEW (struct _slp_oprnd_info);
+ oprnd_info->def_stmts = VEC_alloc (gimple, heap, group_size);
+ oprnd_info->first_dt = vect_uninitialized_def;
+ oprnd_info->first_def_type = NULL_TREE;
+ oprnd_info->first_const_oprnd = NULL_TREE;
+ oprnd_info->first_pattern = false;
+ VEC_quick_push (slp_oprnd_info, oprnds_info, oprnd_info);
+ }
+
+ return oprnds_info;
+}
+
+
+/* Free operands info. */
+
+static void
+vect_free_oprnd_info (VEC (slp_oprnd_info, heap) **oprnds_info)
+{
+ int i;
+ slp_oprnd_info oprnd_info;
+
+ FOR_EACH_VEC_ELT (slp_oprnd_info, *oprnds_info, i, oprnd_info)
+ {
+ VEC_free (gimple, heap, oprnd_info->def_stmts);
+ XDELETE (oprnd_info);
+ }
+
+ VEC_free (slp_oprnd_info, heap, *oprnds_info);
}
-/* Get the defs for the rhs of STMT (collect them in DEF_STMTS0/1), check that
- they are of a legal type and that they match the defs of the first stmt of
- the SLP group (stored in FIRST_STMT_...). */
+/* Get the defs for the rhs of STMT (collect them in OPRNDS_INFO), check that
+ they are of a valid type and that they match the defs of the first stmt of
+ the SLP group (stored in OPRNDS_INFO). */
static bool
-vect_get_and_check_slp_defs (loop_vec_info loop_vinfo, slp_tree slp_node,
- gimple stmt, VEC (gimple, heap) **def_stmts0,
- VEC (gimple, heap) **def_stmts1,
- enum vect_def_type *first_stmt_dt0,
- enum vect_def_type *first_stmt_dt1,
- tree *first_stmt_def0_type,
- tree *first_stmt_def1_type,
- tree *first_stmt_const_oprnd,
- int ncopies_for_cost,
- bool *pattern0, bool *pattern1)
+vect_get_and_check_slp_defs (loop_vec_info loop_vinfo, bb_vec_info bb_vinfo,
+ slp_tree slp_node, gimple stmt,
+ int ncopies_for_cost, bool first,
+ VEC (slp_oprnd_info, heap) **oprnds_info)
{
tree oprnd;
unsigned int i, number_of_oprnds;
- tree def;
+ tree def, def_op0 = NULL_TREE;
gimple def_stmt;
- enum vect_def_type dt[2] = {vect_unknown_def_type, vect_unknown_def_type};
- stmt_vec_info stmt_info =
- vinfo_for_stmt (VEC_index (gimple, SLP_TREE_SCALAR_STMTS (slp_node), 0));
- enum gimple_rhs_class rhs_class;
- struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
-
- rhs_class = get_gimple_rhs_class (gimple_assign_rhs_code (stmt));
- number_of_oprnds = gimple_num_ops (stmt) - 1; /* RHS only */
+ enum vect_def_type dt = vect_uninitialized_def;
+ enum vect_def_type dt_op0 = vect_uninitialized_def;
+ stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
+ tree lhs = gimple_get_lhs (stmt);
+ struct loop *loop = NULL;
+ enum tree_code rhs_code;
+ bool different_types = false;
+ bool pattern = false;
+ slp_oprnd_info oprnd_info, oprnd0_info, oprnd1_info;
+ int op_idx = 1;
+ tree compare_rhs = NULL_TREE;
+
+ if (loop_vinfo)
+ loop = LOOP_VINFO_LOOP (loop_vinfo);
+
+ if (is_gimple_call (stmt))
+ {
+ number_of_oprnds = gimple_call_num_args (stmt);
+ op_idx = 3;
+ }
+ else if (is_gimple_assign (stmt))
+ {
+ number_of_oprnds = gimple_num_ops (stmt) - 1;
+ if (gimple_assign_rhs_code (stmt) == COND_EXPR)
+ number_of_oprnds++;
+ }
+ else
+ return false;
for (i = 0; i < number_of_oprnds; i++)
{
- oprnd = gimple_op (stmt, i + 1);
+ if (compare_rhs)
+ {
+ oprnd = compare_rhs;
+ compare_rhs = NULL_TREE;
+ }
+ else
+ oprnd = gimple_op (stmt, op_idx++);
+
+ oprnd_info = VEC_index (slp_oprnd_info, *oprnds_info, i);
+
+ if (COMPARISON_CLASS_P (oprnd))
+ {
+ compare_rhs = TREE_OPERAND (oprnd, 1);
+ oprnd = TREE_OPERAND (oprnd, 0);
+ }
- if (!vect_is_simple_use (oprnd, loop_vinfo, &def_stmt, &def, &dt[i])
- || (!def_stmt && dt[i] != vect_constant_def))
+ if (!vect_is_simple_use (oprnd, NULL, loop_vinfo, bb_vinfo, &def_stmt,
+ &def, &dt)
+ || (!def_stmt && dt != vect_constant_def))
{
- if (vect_print_dump_info (REPORT_SLP))
+ if (vect_print_dump_info (REPORT_SLP))
{
fprintf (vect_dump, "Build SLP failed: can't find def for ");
print_generic_expr (vect_dump, oprnd, TDF_SLIM);
return false;
}
- /* Check if DEF_STMT is a part of a pattern and get the def stmt from
- the pattern. Check that all the stmts of the node are in the
+ /* Check if DEF_STMT is a part of a pattern in LOOP and get the def stmt
+ from the pattern. Check that all the stmts of the node are in the
pattern. */
- if (def_stmt && gimple_bb (def_stmt)
+ if (loop && def_stmt && gimple_bb (def_stmt)
&& flow_bb_inside_loop_p (loop, gimple_bb (def_stmt))
&& vinfo_for_stmt (def_stmt)
- && STMT_VINFO_IN_PATTERN_P (vinfo_for_stmt (def_stmt)))
+ && STMT_VINFO_IN_PATTERN_P (vinfo_for_stmt (def_stmt))
+ && !STMT_VINFO_RELEVANT (vinfo_for_stmt (def_stmt))
+ && !STMT_VINFO_LIVE_P (vinfo_for_stmt (def_stmt)))
{
- if (!*first_stmt_dt0)
- *pattern0 = true;
- else
- {
- if (i == 1 && !*first_stmt_dt1)
- *pattern1 = true;
- else if ((i == 0 && !*pattern0) || (i == 1 && !*pattern1))
- {
- if (vect_print_dump_info (REPORT_DETAILS))
- {
- fprintf (vect_dump, "Build SLP failed: some of the stmts"
- " are in a pattern, and others are not ");
- print_generic_expr (vect_dump, oprnd, TDF_SLIM);
- }
+ pattern = true;
+ if (!first && !oprnd_info->first_pattern)
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ {
+ fprintf (vect_dump, "Build SLP failed: some of the stmts"
+ " are in a pattern, and others are not ");
+ print_generic_expr (vect_dump, oprnd, TDF_SLIM);
+ }
- return false;
- }
+ return false;
}
def_stmt = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (def_stmt));
- dt[i] = STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt));
+ dt = STMT_VINFO_DEF_TYPE (vinfo_for_stmt (def_stmt));
- if (*dt == vect_unknown_def_type)
+ if (dt == vect_unknown_def_type)
{
if (vect_print_dump_info (REPORT_DETAILS))
fprintf (vect_dump, "Unsupported pattern.");
}
}
- if (!*first_stmt_dt0)
+ if (first)
{
- /* op0 of the first stmt of the group - store its info. */
- *first_stmt_dt0 = dt[i];
+ oprnd_info->first_dt = dt;
+ oprnd_info->first_pattern = pattern;
if (def)
- *first_stmt_def0_type = TREE_TYPE (def);
+ {
+ oprnd_info->first_def_type = TREE_TYPE (def);
+ oprnd_info->first_const_oprnd = NULL_TREE;
+ }
else
- *first_stmt_const_oprnd = oprnd;
+ {
+ oprnd_info->first_def_type = NULL_TREE;
+ oprnd_info->first_const_oprnd = oprnd;
+ }
- /* Analyze costs (for the first stmt of the group only). */
- if (rhs_class != GIMPLE_SINGLE_RHS)
- /* Not memory operation (we don't call this functions for loads). */
- vect_model_simple_cost (stmt_info, ncopies_for_cost, dt, slp_node);
- else
- /* Store. */
- vect_model_store_cost (stmt_info, ncopies_for_cost, dt[0], slp_node);
- }
-
- else
- {
- if (!*first_stmt_dt1 && i == 1)
+ if (i == 0)
{
- /* op1 of the first stmt of the group - store its info. */
- *first_stmt_dt1 = dt[i];
- if (def)
- *first_stmt_def1_type = TREE_TYPE (def);
+ def_op0 = def;
+ dt_op0 = dt;
+ /* Analyze costs (for the first stmt of the group only). */
+ if (REFERENCE_CLASS_P (lhs))
+ /* Store. */
+ vect_model_store_cost (stmt_info, ncopies_for_cost, false,
+ dt, slp_node);
else
{
- /* We assume that the stmt contains only one constant
- operand. We fail otherwise, to be on the safe side. */
- if (*first_stmt_const_oprnd)
- {
- if (vect_print_dump_info (REPORT_SLP))
- fprintf (vect_dump, "Build SLP failed: two constant "
- "oprnds in stmt");
- return false;
- }
- *first_stmt_const_oprnd = oprnd;
+ enum vect_def_type dts[2];
+ dts[0] = dt;
+ dts[1] = vect_uninitialized_def;
+ /* Not memory operation (we don't call this function for
+ loads). */
+ vect_model_simple_cost (stmt_info, ncopies_for_cost, dts,
+ slp_node);
}
}
- else
+ }
+ else
+ {
+ /* Not first stmt of the group, check that the def-stmt/s match
+ the def-stmt/s of the first stmt. Allow different definition
+ types for reduction chains: the first stmt must be a
+ vect_reduction_def (a phi node), and the rest
+ vect_internal_def. */
+ if (((oprnd_info->first_dt != dt
+ && !(oprnd_info->first_dt == vect_reduction_def
+ && dt == vect_internal_def))
+ || (oprnd_info->first_def_type != NULL_TREE
+ && def
+ && !types_compatible_p (oprnd_info->first_def_type,
+ TREE_TYPE (def))))
+ || (!def
+ && !types_compatible_p (TREE_TYPE (oprnd_info->first_const_oprnd),
+ TREE_TYPE (oprnd)))
+ || different_types)
{
- /* Not first stmt of the group, check that the def-stmt/s match
- the def-stmt/s of the first stmt. */
- if ((i == 0
- && (*first_stmt_dt0 != dt[i]
- || (*first_stmt_def0_type && def
- && *first_stmt_def0_type != TREE_TYPE (def))))
- || (i == 1
- && (*first_stmt_dt1 != dt[i]
- || (*first_stmt_def1_type && def
- && *first_stmt_def1_type != TREE_TYPE (def))))
- || (!def
- && TREE_TYPE (*first_stmt_const_oprnd)
- != TREE_TYPE (oprnd)))
- {
- if (vect_print_dump_info (REPORT_SLP))
+ if (number_of_oprnds != 2)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
fprintf (vect_dump, "Build SLP failed: different types ");
-
+
return false;
+ }
+
+ /* Try to swap operands in case of binary operation. */
+ if (i == 0)
+ different_types = true;
+ else
+ {
+ oprnd0_info = VEC_index (slp_oprnd_info, *oprnds_info, 0);
+ if (is_gimple_assign (stmt)
+ && (rhs_code = gimple_assign_rhs_code (stmt))
+ && TREE_CODE_CLASS (rhs_code) == tcc_binary
+ && commutative_tree_code (rhs_code)
+ && oprnd0_info->first_dt == dt
+ && oprnd_info->first_dt == dt_op0
+ && def_op0 && def
+ && !(oprnd0_info->first_def_type
+ && !types_compatible_p (oprnd0_info->first_def_type,
+ TREE_TYPE (def)))
+ && !(oprnd_info->first_def_type
+ && !types_compatible_p (oprnd_info->first_def_type,
+ TREE_TYPE (def_op0))))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Swapping operands of ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ swap_tree_operands (stmt, gimple_assign_rhs1_ptr (stmt),
+ gimple_assign_rhs2_ptr (stmt));
+ }
+ else
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "Build SLP failed: different types ");
+
+ return false;
+ }
}
}
}
/* Check the types of the definitions. */
- switch (dt[i])
+ switch (dt)
{
case vect_constant_def:
- case vect_invariant_def:
+ case vect_external_def:
+ case vect_reduction_def:
break;
-
- case vect_loop_def:
- if (i == 0)
- VEC_safe_push (gimple, heap, *def_stmts0, def_stmt);
+
+ case vect_internal_def:
+ if (different_types)
+ {
+ oprnd0_info = VEC_index (slp_oprnd_info, *oprnds_info, 0);
+ oprnd1_info = VEC_index (slp_oprnd_info, *oprnds_info, 0);
+ if (i == 0)
+ VEC_quick_push (gimple, oprnd1_info->def_stmts, def_stmt);
+ else
+ VEC_quick_push (gimple, oprnd0_info->def_stmts, def_stmt);
+ }
else
- VEC_safe_push (gimple, heap, *def_stmts1, def_stmt);
+ VEC_quick_push (gimple, oprnd_info->def_stmts, def_stmt);
+
break;
default:
/* FORNOW: Not supported. */
- if (vect_print_dump_info (REPORT_SLP))
+ if (vect_print_dump_info (REPORT_SLP))
{
fprintf (vect_dump, "Build SLP failed: illegal type of def ");
print_generic_expr (vect_dump, def, TDF_SLIM);
/* Recursively build an SLP tree starting from NODE.
- Fail (and return FALSE) if def-stmts are not isomorphic, require data
- permutation or are of unsupported types of operation. Otherwise, return
+ Fail (and return FALSE) if def-stmts are not isomorphic, require data
+ permutation or are of unsupported types of operation. Otherwise, return
TRUE. */
static bool
-vect_build_slp_tree (loop_vec_info loop_vinfo, slp_tree *node,
- unsigned int group_size,
- int *inside_cost, int *outside_cost,
- int ncopies_for_cost, unsigned int *max_nunits,
+vect_build_slp_tree (loop_vec_info loop_vinfo, bb_vec_info bb_vinfo,
+ slp_tree *node, unsigned int group_size,
+ int *inside_cost, int *outside_cost,
+ int ncopies_for_cost, unsigned int *max_nunits,
VEC (int, heap) **load_permutation,
- VEC (slp_tree, heap) **loads)
+ VEC (slp_tree, heap) **loads,
+ unsigned int vectorization_factor, bool *loads_permuted)
{
- VEC (gimple, heap) *def_stmts0 = VEC_alloc (gimple, heap, group_size);
- VEC (gimple, heap) *def_stmts1 = VEC_alloc (gimple, heap, group_size);
unsigned int i;
VEC (gimple, heap) *stmts = SLP_TREE_SCALAR_STMTS (*node);
gimple stmt = VEC_index (gimple, stmts, 0);
- enum vect_def_type first_stmt_dt0 = 0, first_stmt_dt1 = 0;
- enum tree_code first_stmt_code = 0, rhs_code;
- tree first_stmt_def1_type = NULL_TREE, first_stmt_def0_type = NULL_TREE;
+ enum tree_code first_stmt_code = ERROR_MARK, rhs_code = ERROR_MARK;
+ enum tree_code first_cond_code = ERROR_MARK;
tree lhs;
bool stop_recursion = false, need_same_oprnds = false;
tree vectype, scalar_type, first_op1 = NULL_TREE;
- unsigned int vectorization_factor = 0, ncopies;
+ unsigned int ncopies;
optab optab;
int icode;
enum machine_mode optab_op2_mode;
enum machine_mode vec_mode;
- tree first_stmt_const_oprnd = NULL_TREE;
struct data_reference *first_dr;
- bool pattern0 = false, pattern1 = false;
HOST_WIDE_INT dummy;
bool permutation = false;
unsigned int load_place;
- gimple first_load;
+ gimple first_load, prev_first_load = NULL;
+ VEC (slp_oprnd_info, heap) *oprnds_info;
+ unsigned int nops;
+ slp_oprnd_info oprnd_info;
+ tree cond;
+
+ if (is_gimple_call (stmt))
+ nops = gimple_call_num_args (stmt);
+ else if (is_gimple_assign (stmt))
+ {
+ nops = gimple_num_ops (stmt) - 1;
+ if (gimple_assign_rhs_code (stmt) == COND_EXPR)
+ nops++;
+ }
+ else
+ return false;
+
+ oprnds_info = vect_create_oprnd_info (nops, group_size);
/* For every stmt in NODE find its def stmt/s. */
- for (i = 0; VEC_iterate (gimple, stmts, i, stmt); i++)
+ FOR_EACH_VEC_ELT (gimple, stmts, i, stmt)
{
- if (vect_print_dump_info (REPORT_SLP))
+ if (vect_print_dump_info (REPORT_SLP))
{
fprintf (vect_dump, "Build SLP for ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
+ /* Fail to vectorize statements marked as unvectorizable. */
+ if (!STMT_VINFO_VECTORIZABLE (vinfo_for_stmt (stmt)))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump,
+ "Build SLP failed: unvectorizable statement ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+
lhs = gimple_get_lhs (stmt);
if (lhs == NULL_TREE)
{
- if (vect_print_dump_info (REPORT_SLP))
+ if (vect_print_dump_info (REPORT_SLP))
{
fprintf (vect_dump,
- "Build SLP failed: not GIMPLE_ASSIGN nor GIMPLE_CALL");
+ "Build SLP failed: not GIMPLE_ASSIGN nor GIMPLE_CALL ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
-
+
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
- scalar_type = vect_get_smallest_scalar_type (stmt, &dummy, &dummy);
+ if (is_gimple_assign (stmt)
+ && gimple_assign_rhs_code (stmt) == COND_EXPR
+ && (cond = gimple_assign_rhs1 (stmt))
+ && !COMPARISON_CLASS_P (cond))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump,
+ "Build SLP failed: condition is not comparison ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+
+ scalar_type = vect_get_smallest_scalar_type (stmt, &dummy, &dummy);
vectype = get_vectype_for_scalar_type (scalar_type);
if (!vectype)
{
fprintf (vect_dump, "Build SLP failed: unsupported data-type ");
print_generic_expr (vect_dump, scalar_type, TDF_SLIM);
}
+
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
- gcc_assert (LOOP_VINFO_VECT_FACTOR (loop_vinfo));
- vectorization_factor = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
- ncopies = vectorization_factor / TYPE_VECTOR_SUBPARTS (vectype);
- if (ncopies > 1 && vect_print_dump_info (REPORT_SLP))
- fprintf (vect_dump, "SLP with multiple types ");
-
/* In case of multiple types we need to detect the smallest type. */
if (*max_nunits < TYPE_VECTOR_SUBPARTS (vectype))
- *max_nunits = TYPE_VECTOR_SUBPARTS (vectype);
-
+ {
+ *max_nunits = TYPE_VECTOR_SUBPARTS (vectype);
+ if (bb_vinfo)
+ vectorization_factor = *max_nunits;
+ }
+
+ ncopies = vectorization_factor / TYPE_VECTOR_SUBPARTS (vectype);
+
if (is_gimple_call (stmt))
- rhs_code = CALL_EXPR;
+ {
+ rhs_code = CALL_EXPR;
+ if (gimple_call_internal_p (stmt)
+ || gimple_call_tail_p (stmt)
+ || gimple_call_noreturn_p (stmt)
+ || !gimple_call_nothrow_p (stmt)
+ || gimple_call_chain (stmt))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump,
+ "Build SLP failed: unsupported call type ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+ }
else
rhs_code = gimple_assign_rhs_code (stmt);
{
first_stmt_code = rhs_code;
- /* Shift arguments should be equal in all the packed stmts for a
+ /* Shift arguments should be equal in all the packed stmts for a
vector shift with scalar shift operand. */
if (rhs_code == LSHIFT_EXPR || rhs_code == RSHIFT_EXPR
|| rhs_code == LROTATE_EXPR
optab_vector);
if (!optab
- || (optab->handlers[(int) vec_mode].insn_code
- == CODE_FOR_nothing))
+ || optab_handler (optab, vec_mode) == CODE_FOR_nothing)
{
/* No vector/vector shift, try for a vector/scalar shift. */
optab = optab_for_tree_code (rhs_code, vectype,
{
if (vect_print_dump_info (REPORT_SLP))
fprintf (vect_dump, "Build SLP failed: no optab.");
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
- icode = (int) optab->handlers[(int) vec_mode].insn_code;
+ icode = (int) optab_handler (optab, vec_mode);
if (icode == CODE_FOR_nothing)
{
if (vect_print_dump_info (REPORT_SLP))
fprintf (vect_dump, "Build SLP failed: "
"op not supported by target.");
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
optab_op2_mode = insn_data[icode].operand[2].mode;
}
}
}
+ else if (rhs_code == WIDEN_LSHIFT_EXPR)
+ {
+ need_same_oprnds = true;
+ first_op1 = gimple_assign_rhs2 (stmt);
+ }
}
else
{
&& (first_stmt_code != IMAGPART_EXPR
|| rhs_code != REALPART_EXPR)
&& (first_stmt_code != REALPART_EXPR
- || rhs_code != IMAGPART_EXPR))
+ || rhs_code != IMAGPART_EXPR)
+ && !(STMT_VINFO_STRIDED_ACCESS (vinfo_for_stmt (stmt))
+ && (first_stmt_code == ARRAY_REF
+ || first_stmt_code == INDIRECT_REF
+ || first_stmt_code == COMPONENT_REF
+ || first_stmt_code == MEM_REF)))
{
- if (vect_print_dump_info (REPORT_SLP))
+ if (vect_print_dump_info (REPORT_SLP))
{
- fprintf (vect_dump,
+ fprintf (vect_dump,
"Build SLP failed: different operation in stmt ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
-
+
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
-
- if (need_same_oprnds
+
+ if (need_same_oprnds
&& !operand_equal_p (first_op1, gimple_assign_rhs2 (stmt), 0))
{
- if (vect_print_dump_info (REPORT_SLP))
+ if (vect_print_dump_info (REPORT_SLP))
{
- fprintf (vect_dump,
+ fprintf (vect_dump,
"Build SLP failed: different shift arguments in ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
-
+
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
+
+ if (rhs_code == CALL_EXPR)
+ {
+ gimple first_stmt = VEC_index (gimple, stmts, 0);
+ if (gimple_call_num_args (stmt) != nops
+ || !operand_equal_p (gimple_call_fn (first_stmt),
+ gimple_call_fn (stmt), 0)
+ || gimple_call_fntype (first_stmt)
+ != gimple_call_fntype (stmt))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump,
+ "Build SLP failed: different calls in ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+ }
}
/* Strided store or load. */
if (REFERENCE_CLASS_P (lhs))
{
/* Store. */
- if (!vect_get_and_check_slp_defs (loop_vinfo, *node, stmt,
- &def_stmts0, &def_stmts1,
- &first_stmt_dt0,
- &first_stmt_dt1,
- &first_stmt_def0_type,
- &first_stmt_def1_type,
- &first_stmt_const_oprnd,
- ncopies_for_cost,
- &pattern0, &pattern1))
- return false;
+ if (!vect_get_and_check_slp_defs (loop_vinfo, bb_vinfo, *node,
+ stmt, ncopies_for_cost,
+ (i == 0), &oprnds_info))
+ {
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
}
- else
- {
- /* Load. */
- /* FORNOW: Check that there is no gap between the loads. */
- if ((DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)) == stmt
- && DR_GROUP_GAP (vinfo_for_stmt (stmt)) != 0)
- || (DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)) != stmt
- && DR_GROUP_GAP (vinfo_for_stmt (stmt)) != 1))
- {
- if (vect_print_dump_info (REPORT_SLP))
- {
- fprintf (vect_dump, "Build SLP failed: strided "
- "loads have gaps ");
- print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
- }
-
- return false;
- }
-
- /* Check that the size of interleaved loads group is not
- greater than the SLP group size. */
- if (DR_GROUP_SIZE (vinfo_for_stmt (stmt))
- > ncopies * group_size)
- {
- if (vect_print_dump_info (REPORT_SLP))
- {
- fprintf (vect_dump, "Build SLP failed: the number of "
- "interleaved loads is greater than"
- " the SLP group size ");
- print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
- }
-
- return false;
- }
-
- first_load = DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt));
+ else
+ {
+ /* Load. */
+ /* FORNOW: Check that there is no gap between the loads. */
+ if ((GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)) == stmt
+ && GROUP_GAP (vinfo_for_stmt (stmt)) != 0)
+ || (GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)) != stmt
+ && GROUP_GAP (vinfo_for_stmt (stmt)) != 1))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: strided "
+ "loads have gaps ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+
+ /* Check that the size of interleaved loads group is not
+ greater than the SLP group size. */
+ if (loop_vinfo
+ && GROUP_SIZE (vinfo_for_stmt (stmt)) > ncopies * group_size)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: the number of "
+ "interleaved loads is greater than"
+ " the SLP group size ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+
+ first_load = GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt));
+ if (prev_first_load)
+ {
+ /* Check that there are no loads from different interleaving
+ chains in the same node. The only exception is complex
+ numbers. */
+ if (prev_first_load != first_load
+ && rhs_code != REALPART_EXPR
+ && rhs_code != IMAGPART_EXPR)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: different "
+ "interleaving chains in one node ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+ }
+ else
+ prev_first_load = first_load;
+
if (first_load == stmt)
{
first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt));
- if (vect_supportable_dr_alignment (first_dr)
+ if (vect_supportable_dr_alignment (first_dr, false)
== dr_unaligned_unsupported)
{
if (vect_print_dump_info (REPORT_SLP))
"unaligned load ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
-
+
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
-
+
/* Analyze costs (for the first stmt in the group). */
vect_model_load_cost (vinfo_for_stmt (stmt),
- ncopies_for_cost, *node);
+ ncopies_for_cost, false, *node);
}
-
- /* Store the place of this load in the interleaving chain. In
+
+ /* Store the place of this load in the interleaving chain. In
case that permutation is needed we later decide if a specific
permutation is supported. */
load_place = vect_get_place_in_interleaving_chain (stmt,
first_load);
if (load_place != i)
permutation = true;
-
+
VEC_safe_push (int, heap, *load_permutation, load_place);
-
+
/* We stop the tree when we reach a group of loads. */
stop_recursion = true;
continue;
{
if (TREE_CODE_CLASS (rhs_code) == tcc_reference)
{
- /* Not strided load. */
- if (vect_print_dump_info (REPORT_SLP))
+ /* Not strided load. */
+ if (vect_print_dump_info (REPORT_SLP))
{
fprintf (vect_dump, "Build SLP failed: not strided load ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
/* FORNOW: Not strided loads are not supported. */
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
/* Not memory operation. */
if (TREE_CODE_CLASS (rhs_code) != tcc_binary
- && TREE_CODE_CLASS (rhs_code) != tcc_unary)
+ && TREE_CODE_CLASS (rhs_code) != tcc_unary
+ && rhs_code != COND_EXPR
+ && rhs_code != CALL_EXPR)
{
- if (vect_print_dump_info (REPORT_SLP))
+ if (vect_print_dump_info (REPORT_SLP))
{
fprintf (vect_dump, "Build SLP failed: operation");
fprintf (vect_dump, " unsupported ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
+ vect_free_oprnd_info (&oprnds_info);
return false;
}
- /* Find the def-stmts. */
- if (!vect_get_and_check_slp_defs (loop_vinfo, *node, stmt,
- &def_stmts0, &def_stmts1,
- &first_stmt_dt0, &first_stmt_dt1,
- &first_stmt_def0_type,
- &first_stmt_def1_type,
- &first_stmt_const_oprnd,
- ncopies_for_cost,
- &pattern0, &pattern1))
- return false;
+ if (rhs_code == COND_EXPR)
+ {
+ tree cond_expr = gimple_assign_rhs1 (stmt);
+
+ if (i == 0)
+ first_cond_code = TREE_CODE (cond_expr);
+ else if (first_cond_code != TREE_CODE (cond_expr))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: different"
+ " operation");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+ }
+
+ /* Find the def-stmts. */
+ if (!vect_get_and_check_slp_defs (loop_vinfo, bb_vinfo, *node, stmt,
+ ncopies_for_cost, (i == 0),
+ &oprnds_info))
+ {
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
}
}
/* Add the costs of the node to the overall instance costs. */
- *inside_cost += SLP_TREE_INSIDE_OF_LOOP_COST (*node);
+ *inside_cost += SLP_TREE_INSIDE_OF_LOOP_COST (*node);
*outside_cost += SLP_TREE_OUTSIDE_OF_LOOP_COST (*node);
/* Strided loads were reached - stop the recursion. */
if (stop_recursion)
{
+ VEC_safe_push (slp_tree, heap, *loads, *node);
if (permutation)
{
- VEC_safe_push (slp_tree, heap, *loads, *node);
- *inside_cost += TARG_VEC_PERMUTE_COST * group_size;
+
+ *loads_permuted = true;
+ *inside_cost
+ += targetm.vectorize.builtin_vectorization_cost (vec_perm, NULL, 0)
+ * group_size;
+ }
+ else
+ {
+ /* We don't check here complex numbers chains, so we set
+ LOADS_PERMUTED for further check in
+ vect_supported_load_permutation_p. */
+ if (rhs_code == REALPART_EXPR || rhs_code == IMAGPART_EXPR)
+ *loads_permuted = true;
}
+ vect_free_oprnd_info (&oprnds_info);
return true;
}
- /* Create SLP_TREE nodes for the definition node/s. */
- if (first_stmt_dt0 == vect_loop_def)
- {
- slp_tree left_node = XNEW (struct _slp_tree);
- SLP_TREE_SCALAR_STMTS (left_node) = def_stmts0;
- SLP_TREE_VEC_STMTS (left_node) = NULL;
- SLP_TREE_LEFT (left_node) = NULL;
- SLP_TREE_RIGHT (left_node) = NULL;
- SLP_TREE_OUTSIDE_OF_LOOP_COST (left_node) = 0;
- SLP_TREE_INSIDE_OF_LOOP_COST (left_node) = 0;
- if (!vect_build_slp_tree (loop_vinfo, &left_node, group_size,
- inside_cost, outside_cost, ncopies_for_cost,
- max_nunits, load_permutation, loads))
- return false;
-
- SLP_TREE_LEFT (*node) = left_node;
- }
-
- if (first_stmt_dt1 == vect_loop_def)
- {
- slp_tree right_node = XNEW (struct _slp_tree);
- SLP_TREE_SCALAR_STMTS (right_node) = def_stmts1;
- SLP_TREE_VEC_STMTS (right_node) = NULL;
- SLP_TREE_LEFT (right_node) = NULL;
- SLP_TREE_RIGHT (right_node) = NULL;
- SLP_TREE_OUTSIDE_OF_LOOP_COST (right_node) = 0;
- SLP_TREE_INSIDE_OF_LOOP_COST (right_node) = 0;
- if (!vect_build_slp_tree (loop_vinfo, &right_node, group_size,
+ /* Create SLP_TREE nodes for the definition node/s. */
+ FOR_EACH_VEC_ELT (slp_oprnd_info, oprnds_info, i, oprnd_info)
+ {
+ slp_tree child;
+
+ if (oprnd_info->first_dt != vect_internal_def)
+ continue;
+
+ child = vect_create_new_slp_node (oprnd_info->def_stmts);
+ if (!child
+ || !vect_build_slp_tree (loop_vinfo, bb_vinfo, &child, group_size,
inside_cost, outside_cost, ncopies_for_cost,
- max_nunits, load_permutation, loads))
- return false;
-
- SLP_TREE_RIGHT (*node) = right_node;
+ max_nunits, load_permutation, loads,
+ vectorization_factor, loads_permuted))
+ {
+ if (child)
+ oprnd_info->def_stmts = NULL;
+ vect_free_slp_tree (child);
+ vect_free_oprnd_info (&oprnds_info);
+ return false;
+ }
+
+ oprnd_info->def_stmts = NULL;
+ VEC_quick_push (slp_void_p, SLP_TREE_CHILDREN (*node), child);
}
+ vect_free_oprnd_info (&oprnds_info);
return true;
}
{
int i;
gimple stmt;
+ slp_void_p child;
if (!node)
return;
fprintf (vect_dump, "node ");
- for (i = 0; VEC_iterate (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt); i++)
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt)
{
fprintf (vect_dump, "\n\tstmt %d ", i);
- print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
fprintf (vect_dump, "\n");
- vect_print_slp_tree (SLP_TREE_LEFT (node));
- vect_print_slp_tree (SLP_TREE_RIGHT (node));
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_print_slp_tree ((slp_tree) child);
}
-/* Mark the tree rooted at NODE with MARK (PURE_SLP or HYBRID).
- If MARK is HYBRID, it refers to a specific stmt in NODE (the stmt at index
- J). Otherwise, MARK is PURE_SLP and J is -1, which indicates that all the
+/* Mark the tree rooted at NODE with MARK (PURE_SLP or HYBRID).
+ If MARK is HYBRID, it refers to a specific stmt in NODE (the stmt at index
+ J). Otherwise, MARK is PURE_SLP and J is -1, which indicates that all the
stmts in NODE are to be marked. */
static void
{
int i;
gimple stmt;
+ slp_void_p child;
if (!node)
return;
- for (i = 0; VEC_iterate (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt); i++)
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt)
if (j < 0 || i == j)
STMT_SLP_TYPE (vinfo_for_stmt (stmt)) = mark;
- vect_mark_slp_stmts (SLP_TREE_LEFT (node), mark, j);
- vect_mark_slp_stmts (SLP_TREE_RIGHT (node), mark, j);
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_mark_slp_stmts ((slp_tree) child, mark, j);
+}
+
+
+/* Mark the statements of the tree rooted at NODE as relevant (vect_used). */
+
+static void
+vect_mark_slp_stmts_relevant (slp_tree node)
+{
+ int i;
+ gimple stmt;
+ stmt_vec_info stmt_info;
+ slp_void_p child;
+
+ if (!node)
+ return;
+
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt)
+ {
+ stmt_info = vinfo_for_stmt (stmt);
+ gcc_assert (!STMT_VINFO_RELEVANT (stmt_info)
+ || STMT_VINFO_RELEVANT (stmt_info) == vect_used_in_scope);
+ STMT_VINFO_RELEVANT (stmt_info) = vect_used_in_scope;
+ }
+
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_mark_slp_stmts_relevant ((slp_tree) child);
}
-/* Check if the permutation required by the SLP INSTANCE is supported.
+/* Check if the permutation required by the SLP INSTANCE is supported.
Reorganize the SLP nodes stored in SLP_INSTANCE_LOADS if needed. */
static bool
{
slp_tree node = VEC_index (slp_tree, SLP_INSTANCE_LOADS (instance), 0);
gimple stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (node), 0);
- gimple first_load = DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt));
+ gimple first_load = GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt));
VEC (slp_tree, heap) *sorted_loads = NULL;
int index;
slp_tree *tmp_loads = NULL;
- int group_size = SLP_INSTANCE_GROUP_SIZE (instance), i, j;
+ int group_size = SLP_INSTANCE_GROUP_SIZE (instance), i, j;
slp_tree load;
-
- /* FORNOW: The only supported loads permutation is loads from the same
+
+ /* FORNOW: The only supported loads permutation is loads from the same
location in all the loads in the node, when the data-refs in
- nodes of LOADS constitute an interleaving chain.
+ nodes of LOADS constitute an interleaving chain.
Sort the nodes according to the order of accesses in the chain. */
tmp_loads = (slp_tree *) xmalloc (sizeof (slp_tree) * group_size);
- for (i = 0, j = 0;
- VEC_iterate (int, SLP_INSTANCE_LOAD_PERMUTATION (instance), i, index)
- && VEC_iterate (slp_tree, SLP_INSTANCE_LOADS (instance), j, load);
+ for (i = 0, j = 0;
+ VEC_iterate (int, SLP_INSTANCE_LOAD_PERMUTATION (instance), i, index)
+ && VEC_iterate (slp_tree, SLP_INSTANCE_LOADS (instance), j, load);
i += group_size, j++)
{
gimple scalar_stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (load), 0);
/* Check that the loads are all in the same interleaving chain. */
- if (DR_GROUP_FIRST_DR (vinfo_for_stmt (scalar_stmt)) != first_load)
+ if (GROUP_FIRST_ELEMENT (vinfo_for_stmt (scalar_stmt)) != first_load)
{
if (vect_print_dump_info (REPORT_DETAILS))
{
"permutation ");
print_gimple_stmt (vect_dump, scalar_stmt, 0, TDF_SLIM);
}
-
+
free (tmp_loads);
- return false;
+ return false;
}
tmp_loads[index] = load;
}
-
+
sorted_loads = VEC_alloc (slp_tree, heap, group_size);
for (i = 0; i < group_size; i++)
VEC_safe_push (slp_tree, heap, sorted_loads, tmp_loads[i]);
}
-/* Check if the required load permutation is supported.
- LOAD_PERMUTATION contains a list of indices of the loads.
- In SLP this permutation is relative to the order of strided stores that are
- the base of the SLP instance. */
+/* Rearrange the statements of NODE according to PERMUTATION. */
-static bool
-vect_supported_load_permutation_p (slp_instance slp_instn, int group_size,
- VEC (int, heap) *load_permutation)
+static void
+vect_slp_rearrange_stmts (slp_tree node, unsigned int group_size,
+ VEC (int, heap) *permutation)
{
- int i = 0, j, prev = -1, next, k;
- bool supported;
+ gimple stmt;
+ VEC (gimple, heap) *tmp_stmts;
+ unsigned int index, i;
+ slp_void_p child;
+
+ if (!node)
+ return;
+
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_slp_rearrange_stmts ((slp_tree) child, group_size, permutation);
+
+ gcc_assert (group_size == VEC_length (gimple, SLP_TREE_SCALAR_STMTS (node)));
+ tmp_stmts = VEC_alloc (gimple, heap, group_size);
+
+ for (i = 0; i < group_size; i++)
+ VEC_safe_push (gimple, heap, tmp_stmts, NULL);
+
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt)
+ {
+ index = VEC_index (int, permutation, i);
+ VEC_replace (gimple, tmp_stmts, index, stmt);
+ }
- /* FORNOW: permutations are only supported for loop-aware SLP. */
+ VEC_free (gimple, heap, SLP_TREE_SCALAR_STMTS (node));
+ SLP_TREE_SCALAR_STMTS (node) = tmp_stmts;
+}
+
+
+/* Check if the required load permutation is supported.
+ LOAD_PERMUTATION contains a list of indices of the loads.
+ In SLP this permutation is relative to the order of strided stores that are
+ the base of the SLP instance. */
+
+static bool
+vect_supported_load_permutation_p (slp_instance slp_instn, int group_size,
+ VEC (int, heap) *load_permutation)
+{
+ int i = 0, j, prev = -1, next, k, number_of_groups;
+ bool supported, bad_permutation = false;
+ sbitmap load_index;
+ slp_tree node, other_complex_node;
+ gimple stmt, first = NULL, other_node_first, load, next_load, first_load;
+ unsigned complex_numbers = 0;
+ struct data_reference *dr;
+ bb_vec_info bb_vinfo;
+
+ /* FORNOW: permutations are only supported in SLP. */
if (!slp_instn)
return false;
if (vect_print_dump_info (REPORT_SLP))
{
fprintf (vect_dump, "Load permutation ");
- for (i = 0; VEC_iterate (int, load_permutation, i, next); i++)
+ FOR_EACH_VEC_ELT (int, load_permutation, i, next)
fprintf (vect_dump, "%d ", next);
}
- /* 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. */
+ /* In case of reduction every load permutation is allowed, since the order
+ of the reduction statements is not important (as opposed to the case of
+ strided stores). The only condition we need to check is that all the
+ load nodes are of the same size and have the same permutation (and then
+ rearrange all the nodes of the SLP instance according to this
+ permutation). */
+
+ /* Check that all the load nodes are of the same size. */
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (slp_instn), i, node)
+ {
+ if (VEC_length (gimple, SLP_TREE_SCALAR_STMTS (node))
+ != (unsigned) group_size)
+ return false;
+
+ stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (node), 0);
+ if (is_gimple_assign (stmt)
+ && (gimple_assign_rhs_code (stmt) == REALPART_EXPR
+ || gimple_assign_rhs_code (stmt) == IMAGPART_EXPR))
+ complex_numbers++;
+ }
+
+ /* Complex operands can be swapped as following:
+ real_c = real_b + real_a;
+ imag_c = imag_a + imag_b;
+ i.e., we have {real_b, imag_a} and {real_a, imag_b} instead of
+ {real_a, imag_a} and {real_b, imag_b}. We check here that if interleaving
+ chains are mixed, they match the above pattern. */
+ if (complex_numbers)
+ {
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (slp_instn), i, node)
+ {
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), j, stmt)
+ {
+ if (j == 0)
+ first = stmt;
+ else
+ {
+ if (GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)) != first)
+ {
+ if (complex_numbers != 2)
+ return false;
+
+ if (i == 0)
+ k = 1;
+ else
+ k = 0;
+
+ other_complex_node = VEC_index (slp_tree,
+ SLP_INSTANCE_LOADS (slp_instn), k);
+ other_node_first = VEC_index (gimple,
+ SLP_TREE_SCALAR_STMTS (other_complex_node), 0);
+
+ if (GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt))
+ != other_node_first)
+ return false;
+ }
+ }
+ }
+ }
+ }
+
+ /* We checked that this case ok, so there is no need to proceed with
+ permutation tests. */
+ if (complex_numbers == 2
+ && VEC_length (slp_tree, SLP_INSTANCE_LOADS (slp_instn)) == 2)
+ {
+ VEC_free (slp_tree, heap, SLP_INSTANCE_LOADS (slp_instn));
+ VEC_free (int, heap, SLP_INSTANCE_LOAD_PERMUTATION (slp_instn));
+ return true;
+ }
+
+ node = SLP_INSTANCE_TREE (slp_instn);
+ stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (node), 0);
+ /* LOAD_PERMUTATION is a list of indices of all the loads of the SLP
+ instance, not all the loads belong to the same node or interleaving
+ group. Hence, we need to divide them into groups according to
+ GROUP_SIZE. */
+ number_of_groups = VEC_length (int, load_permutation) / group_size;
+
+ /* Reduction (there are no data-refs in the root).
+ In reduction chain the order of the loads is important. */
+ if (!STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt))
+ && !GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)))
+ {
+ int first_group_load_index;
+
+ /* Compare all the permutation sequences to the first one. */
+ for (i = 1; i < number_of_groups; i++)
+ {
+ k = 0;
+ for (j = i * group_size; j < i * group_size + group_size; j++)
+ {
+ next = VEC_index (int, load_permutation, j);
+ first_group_load_index = VEC_index (int, load_permutation, k);
+
+ if (next != first_group_load_index)
+ {
+ bad_permutation = true;
+ break;
+ }
+
+ k++;
+ }
+
+ if (bad_permutation)
+ break;
+ }
+
+ if (!bad_permutation)
+ {
+ /* Check that the loads in the first sequence are different and there
+ are no gaps between them. */
+ load_index = sbitmap_alloc (group_size);
+ sbitmap_zero (load_index);
+ for (k = 0; k < group_size; k++)
+ {
+ first_group_load_index = VEC_index (int, load_permutation, k);
+ if (TEST_BIT (load_index, first_group_load_index))
+ {
+ bad_permutation = true;
+ break;
+ }
+
+ SET_BIT (load_index, first_group_load_index);
+ }
+
+ if (!bad_permutation)
+ for (k = 0; k < group_size; k++)
+ if (!TEST_BIT (load_index, k))
+ {
+ bad_permutation = true;
+ break;
+ }
+
+ sbitmap_free (load_index);
+ }
+
+ if (!bad_permutation)
+ {
+ /* 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,
+ load_permutation);
+ VEC_free (int, heap, SLP_INSTANCE_LOAD_PERMUTATION (slp_instn));
+ return true;
+ }
+ }
+
+ /* In basic block vectorization we allow any subchain of an interleaving
+ chain.
+ FORNOW: not supported in loop SLP because of realignment compications. */
+ bb_vinfo = STMT_VINFO_BB_VINFO (vinfo_for_stmt (stmt));
+ bad_permutation = false;
+ /* Check that for every node in the instance teh loads form a subchain. */
+ if (bb_vinfo)
+ {
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (slp_instn), i, node)
+ {
+ next_load = NULL;
+ first_load = NULL;
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), j, load)
+ {
+ if (!first_load)
+ first_load = GROUP_FIRST_ELEMENT (vinfo_for_stmt (load));
+ else if (first_load
+ != GROUP_FIRST_ELEMENT (vinfo_for_stmt (load)))
+ {
+ bad_permutation = true;
+ break;
+ }
+
+ if (j != 0 && next_load != load)
+ {
+ bad_permutation = true;
+ break;
+ }
+
+ next_load = GROUP_NEXT_ELEMENT (vinfo_for_stmt (load));
+ }
+
+ if (bad_permutation)
+ break;
+ }
+
+ /* Check that the alignment of the first load in every subchain, i.e.,
+ the first statement in every load node, is supported. */
+ if (!bad_permutation)
+ {
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (slp_instn), i, node)
+ {
+ first_load = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (node), 0);
+ if (first_load
+ != GROUP_FIRST_ELEMENT (vinfo_for_stmt (first_load)))
+ {
+ dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (first_load));
+ if (vect_supportable_dr_alignment (dr, false)
+ == dr_unaligned_unsupported)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "unsupported unaligned load ");
+ print_gimple_stmt (vect_dump, first_load, 0,
+ TDF_SLIM);
+ }
+ bad_permutation = true;
+ break;
+ }
+ }
+ }
+
+ if (!bad_permutation)
+ {
+ VEC_free (int, heap, SLP_INSTANCE_LOAD_PERMUTATION (slp_instn));
+ 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 (VEC_length (int, load_permutation)
!= (unsigned int) (group_size * group_size))
return false;
supported = true;
+ load_index = sbitmap_alloc (group_size);
+ sbitmap_zero (load_index);
for (j = 0; j < group_size; j++)
{
for (i = j * group_size, k = 0;
}
prev = next;
- }
+ }
+
+ if (TEST_BIT (load_index, prev))
+ {
+ supported = false;
+ break;
+ }
+
+ SET_BIT (load_index, prev);
}
+
+ for (j = 0; j < group_size; j++)
+ if (!TEST_BIT (load_index, j))
+ return false;
+
+ sbitmap_free (load_index);
if (supported && i == group_size * group_size
&& vect_supported_slp_permutation_p (slp_instn))
return true;
- return false;
+ return false;
}
-/* Find the first load in the loop that belongs to INSTANCE.
+/* Find the first load in the loop that belongs to INSTANCE.
When loads are in several SLP nodes, there can be a case in which the first
- load does not appear in the first SLP node to be transformed, causing
- incorrect order of statements. Since we generate all the loads together,
+ load does not appear in the first SLP node to be transformed, causing
+ incorrect order of statements. Since we generate all the loads together,
they must be inserted before the first load of the SLP instance and not
before the first load of the first node of the instance. */
-static gimple
-vect_find_first_load_in_slp_instance (slp_instance instance)
+
+static gimple
+vect_find_first_load_in_slp_instance (slp_instance instance)
{
int i, j;
slp_tree load_node;
gimple first_load = NULL, load;
- for (i = 0;
- VEC_iterate (slp_tree, SLP_INSTANCE_LOADS (instance), i, load_node);
- i++)
- for (j = 0;
- VEC_iterate (gimple, SLP_TREE_SCALAR_STMTS (load_node), j, load);
- j++)
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (instance), i, load_node)
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (load_node), j, load)
first_load = get_earlier_stmt (load, first_load);
-
+
return first_load;
}
-/* Analyze an SLP instance starting from a group of strided stores. Call
- vect_build_slp_tree to build a tree of packed stmts if possible.
+/* Find the last store in SLP INSTANCE. */
+
+static gimple
+vect_find_last_store_in_slp_instance (slp_instance instance)
+{
+ int i;
+ slp_tree node;
+ gimple last_store = NULL, store;
+
+ node = SLP_INSTANCE_TREE (instance);
+ for (i = 0;
+ VEC_iterate (gimple, SLP_TREE_SCALAR_STMTS (node), i, store);
+ i++)
+ last_store = get_later_stmt (store, last_store);
+
+ return last_store;
+}
+
+
+/* Analyze an SLP instance starting from a group of strided stores. Call
+ vect_build_slp_tree to build a tree of packed stmts if possible.
Return FALSE if it's impossible to SLP any stmt in the loop. */
static bool
-vect_analyze_slp_instance (loop_vec_info loop_vinfo, gimple stmt)
+vect_analyze_slp_instance (loop_vec_info loop_vinfo, bb_vec_info bb_vinfo,
+ gimple stmt)
{
slp_instance new_instance;
- slp_tree node = XNEW (struct _slp_tree);
- unsigned int group_size = DR_GROUP_SIZE (vinfo_for_stmt (stmt));
+ slp_tree node;
+ unsigned int group_size = GROUP_SIZE (vinfo_for_stmt (stmt));
unsigned int unrolling_factor = 1, nunits;
- tree vectype, scalar_type;
+ tree vectype, scalar_type = NULL_TREE;
gimple next;
- unsigned int vectorization_factor = 0, ncopies;
- bool slp_impossible = false;
- int inside_cost = 0, outside_cost = 0, ncopies_for_cost;
+ unsigned int vectorization_factor = 0;
+ int inside_cost = 0, outside_cost = 0, ncopies_for_cost, i;
unsigned int max_nunits = 0;
VEC (int, heap) *load_permutation;
VEC (slp_tree, heap) *loads;
-
- scalar_type = TREE_TYPE (DR_REF (STMT_VINFO_DATA_REF (
- vinfo_for_stmt (stmt))));
- vectype = get_vectype_for_scalar_type (scalar_type);
+ struct data_reference *dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt));
+ bool loads_permuted = false;
+ VEC (gimple, heap) *scalar_stmts;
+
+ if (GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)))
+ {
+ if (dr)
+ {
+ scalar_type = TREE_TYPE (DR_REF (dr));
+ vectype = get_vectype_for_scalar_type (scalar_type);
+ }
+ else
+ {
+ gcc_assert (loop_vinfo);
+ vectype = STMT_VINFO_VECTYPE (vinfo_for_stmt (stmt));
+ }
+
+ group_size = GROUP_SIZE (vinfo_for_stmt (stmt));
+ }
+ else
+ {
+ gcc_assert (loop_vinfo);
+ vectype = STMT_VINFO_VECTYPE (vinfo_for_stmt (stmt));
+ group_size = VEC_length (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo));
+ }
+
if (!vectype)
{
if (vect_print_dump_info (REPORT_SLP))
fprintf (vect_dump, "Build SLP failed: unsupported data-type ");
print_generic_expr (vect_dump, scalar_type, TDF_SLIM);
}
+
return false;
}
nunits = TYPE_VECTOR_SUBPARTS (vectype);
- vectorization_factor = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
- ncopies = vectorization_factor / nunits;
+ if (loop_vinfo)
+ vectorization_factor = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
+ else
+ vectorization_factor = nunits;
+
+ /* Calculate the unrolling factor. */
+ unrolling_factor = least_common_multiple (nunits, group_size) / group_size;
+ if (unrolling_factor != 1 && !loop_vinfo)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "Build SLP failed: unrolling required in basic"
+ " block SLP");
- /* Create a node (a root of the SLP tree) for the packed strided stores. */
- SLP_TREE_SCALAR_STMTS (node) = VEC_alloc (gimple, heap, group_size);
+ return false;
+ }
+
+ /* Create a node (a root of the SLP tree) for the packed strided stores. */
+ scalar_stmts = VEC_alloc (gimple, heap, group_size);
next = stmt;
- /* Collect the stores and store them in SLP_TREE_SCALAR_STMTS. */
- while (next)
+ if (GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt)))
{
- VEC_safe_push (gimple, heap, SLP_TREE_SCALAR_STMTS (node), next);
- next = DR_GROUP_NEXT_DR (vinfo_for_stmt (next));
+ /* Collect the stores and store them in SLP_TREE_SCALAR_STMTS. */
+ while (next)
+ {
+ if (STMT_VINFO_IN_PATTERN_P (vinfo_for_stmt (next))
+ && STMT_VINFO_RELATED_STMT (vinfo_for_stmt (next)))
+ VEC_safe_push (gimple, heap, scalar_stmts,
+ STMT_VINFO_RELATED_STMT (vinfo_for_stmt (next)));
+ else
+ VEC_safe_push (gimple, heap, scalar_stmts, next);
+ next = GROUP_NEXT_ELEMENT (vinfo_for_stmt (next));
+ }
+ }
+ else
+ {
+ /* Collect reduction statements. */
+ VEC (gimple, heap) *reductions = LOOP_VINFO_REDUCTIONS (loop_vinfo);
+ for (i = 0; VEC_iterate (gimple, reductions, i, next); i++)
+ VEC_safe_push (gimple, heap, scalar_stmts, next);
}
- SLP_TREE_VEC_STMTS (node) = NULL;
- SLP_TREE_NUMBER_OF_VEC_STMTS (node) = 0;
- SLP_TREE_LEFT (node) = NULL;
- SLP_TREE_RIGHT (node) = NULL;
- SLP_TREE_OUTSIDE_OF_LOOP_COST (node) = 0;
- SLP_TREE_INSIDE_OF_LOOP_COST (node) = 0;
+ node = vect_create_new_slp_node (scalar_stmts);
- /* Calculate the unrolling factor. */
- unrolling_factor = least_common_multiple (nunits, group_size) / group_size;
-
/* Calculate the number of vector stmts to create based on the unrolling
factor (number of vectors is 1 if NUNITS >= GROUP_SIZE, and is
GROUP_SIZE / NUNITS otherwise. */
ncopies_for_cost = unrolling_factor * group_size / nunits;
-
- load_permutation = VEC_alloc (int, heap, group_size * group_size);
- loads = VEC_alloc (slp_tree, heap, group_size);
+
+ load_permutation = VEC_alloc (int, heap, group_size * group_size);
+ loads = VEC_alloc (slp_tree, heap, group_size);
/* Build the tree for the SLP instance. */
- if (vect_build_slp_tree (loop_vinfo, &node, group_size, &inside_cost,
- &outside_cost, ncopies_for_cost, &max_nunits,
- &load_permutation, &loads))
+ if (vect_build_slp_tree (loop_vinfo, bb_vinfo, &node, group_size,
+ &inside_cost, &outside_cost, ncopies_for_cost,
+ &max_nunits, &load_permutation, &loads,
+ vectorization_factor, &loads_permuted))
{
- /* Create a new SLP instance. */
- new_instance = XNEW (struct _slp_instance);
- SLP_INSTANCE_TREE (new_instance) = node;
- SLP_INSTANCE_GROUP_SIZE (new_instance) = group_size;
- /* Calculate the unrolling factor based on the smallest type in the
- loop. */
+ /* Calculate the unrolling factor based on the smallest type. */
if (max_nunits > nunits)
unrolling_factor = least_common_multiple (max_nunits, group_size)
/ group_size;
+ if (unrolling_factor != 1 && !loop_vinfo)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "Build SLP failed: unrolling required in basic"
+ " block SLP");
+ vect_free_slp_tree (node);
+ VEC_free (int, heap, load_permutation);
+ VEC_free (slp_tree, heap, loads);
+ return false;
+ }
+
+ /* Create a new SLP instance. */
+ new_instance = XNEW (struct _slp_instance);
+ SLP_INSTANCE_TREE (new_instance) = node;
+ SLP_INSTANCE_GROUP_SIZE (new_instance) = group_size;
SLP_INSTANCE_UNROLLING_FACTOR (new_instance) = unrolling_factor;
SLP_INSTANCE_OUTSIDE_OF_LOOP_COST (new_instance) = outside_cost;
SLP_INSTANCE_INSIDE_OF_LOOP_COST (new_instance) = inside_cost;
SLP_INSTANCE_LOADS (new_instance) = loads;
SLP_INSTANCE_FIRST_LOAD_STMT (new_instance) = NULL;
SLP_INSTANCE_LOAD_PERMUTATION (new_instance) = load_permutation;
- if (VEC_length (slp_tree, loads))
+
+ if (loads_permuted)
{
if (!vect_supported_load_permutation_p (new_instance, group_size,
- load_permutation))
+ load_permutation))
{
if (vect_print_dump_info (REPORT_SLP))
{
else
VEC_free (int, heap, SLP_INSTANCE_LOAD_PERMUTATION (new_instance));
- VEC_safe_push (slp_instance, heap, LOOP_VINFO_SLP_INSTANCES (loop_vinfo),
- new_instance);
- if (vect_print_dump_info (REPORT_SLP))
- vect_print_slp_tree (node);
+ if (loop_vinfo)
+ VEC_safe_push (slp_instance, heap,
+ LOOP_VINFO_SLP_INSTANCES (loop_vinfo),
+ new_instance);
+ else
+ VEC_safe_push (slp_instance, heap, BB_VINFO_SLP_INSTANCES (bb_vinfo),
+ new_instance);
+
+ if (vect_print_dump_info (REPORT_SLP))
+ vect_print_slp_tree (node);
+
+ return true;
+ }
+
+ /* Failed to SLP. */
+ /* Free the allocated memory. */
+ vect_free_slp_tree (node);
+ VEC_free (int, heap, load_permutation);
+ VEC_free (slp_tree, heap, loads);
+
+ return false;
+}
+
+
+/* Check if there are stmts in the loop can be vectorized using SLP. Build SLP
+ trees of packed scalar stmts if SLP is possible. */
+
+bool
+vect_analyze_slp (loop_vec_info loop_vinfo, bb_vec_info bb_vinfo)
+{
+ unsigned int i;
+ VEC (gimple, heap) *strided_stores, *reductions = NULL, *reduc_chains = NULL;
+ gimple first_element;
+ bool ok = false;
+
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "=== vect_analyze_slp ===");
+
+ if (loop_vinfo)
+ {
+ strided_stores = LOOP_VINFO_STRIDED_STORES (loop_vinfo);
+ reduc_chains = LOOP_VINFO_REDUCTION_CHAINS (loop_vinfo);
+ reductions = LOOP_VINFO_REDUCTIONS (loop_vinfo);
+ }
+ else
+ strided_stores = BB_VINFO_STRIDED_STORES (bb_vinfo);
+
+ /* Find SLP sequences starting from groups of strided stores. */
+ FOR_EACH_VEC_ELT (gimple, strided_stores, i, first_element)
+ if (vect_analyze_slp_instance (loop_vinfo, bb_vinfo, first_element))
+ ok = true;
+
+ if (bb_vinfo && !ok)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "Failed to SLP the basic block.");
+
+ return false;
+ }
+
+ if (loop_vinfo
+ && VEC_length (gimple, LOOP_VINFO_REDUCTION_CHAINS (loop_vinfo)) > 0)
+ {
+ /* Find SLP sequences starting from reduction chains. */
+ FOR_EACH_VEC_ELT (gimple, reduc_chains, i, first_element)
+ if (vect_analyze_slp_instance (loop_vinfo, bb_vinfo, first_element))
+ ok = true;
+ else
+ return false;
+
+ /* Don't try to vectorize SLP reductions if reduction chain was
+ detected. */
+ return ok;
+ }
+
+ /* Find SLP sequences starting from groups of reductions. */
+ if (loop_vinfo && VEC_length (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo)) > 1
+ && vect_analyze_slp_instance (loop_vinfo, bb_vinfo,
+ VEC_index (gimple, reductions, 0)))
+ ok = true;
+
+ return true;
+}
+
+
+/* For each possible SLP instance decide whether to SLP it and calculate overall
+ unrolling factor needed to SLP the loop. Return TRUE if decided to SLP at
+ least one instance. */
+
+bool
+vect_make_slp_decision (loop_vec_info loop_vinfo)
+{
+ unsigned int i, unrolling_factor = 1;
+ VEC (slp_instance, heap) *slp_instances = LOOP_VINFO_SLP_INSTANCES (loop_vinfo);
+ slp_instance instance;
+ int decided_to_slp = 0;
+
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "=== vect_make_slp_decision ===");
+
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
+ {
+ /* FORNOW: SLP if you can. */
+ if (unrolling_factor < SLP_INSTANCE_UNROLLING_FACTOR (instance))
+ unrolling_factor = SLP_INSTANCE_UNROLLING_FACTOR (instance);
+
+ /* Mark all the stmts that belong to INSTANCE as PURE_SLP stmts. Later we
+ call vect_detect_hybrid_slp () to find stmts that need hybrid SLP and
+ loop-based vectorization. Such stmts will be marked as HYBRID. */
+ vect_mark_slp_stmts (SLP_INSTANCE_TREE (instance), pure_slp, -1);
+ decided_to_slp++;
+ }
+
+ LOOP_VINFO_SLP_UNROLLING_FACTOR (loop_vinfo) = unrolling_factor;
+
+ if (decided_to_slp && vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "Decided to SLP %d instances. Unrolling factor %d",
+ decided_to_slp, unrolling_factor);
+
+ return (decided_to_slp > 0);
+}
+
+
+/* Find stmts that must be both vectorized and SLPed (since they feed stmts that
+ can't be SLPed) in the tree rooted at NODE. Mark such stmts as HYBRID. */
+
+static void
+vect_detect_hybrid_slp_stmts (slp_tree node)
+{
+ int i;
+ VEC (gimple, heap) *stmts = SLP_TREE_SCALAR_STMTS (node);
+ gimple stmt = VEC_index (gimple, stmts, 0);
+ imm_use_iterator imm_iter;
+ gimple use_stmt;
+ stmt_vec_info stmt_vinfo = vinfo_for_stmt (stmt);
+ slp_void_p child;
+ loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_vinfo);
+ struct loop *loop = NULL;
+ bb_vec_info bb_vinfo = STMT_VINFO_BB_VINFO (stmt_vinfo);
+ basic_block bb = NULL;
+
+ if (!node)
+ return;
+
+ if (loop_vinfo)
+ loop = LOOP_VINFO_LOOP (loop_vinfo);
+ else
+ bb = BB_VINFO_BB (bb_vinfo);
+
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt)
+ if (PURE_SLP_STMT (vinfo_for_stmt (stmt))
+ && 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)
+ && ((loop && flow_bb_inside_loop_p (loop, gimple_bb (use_stmt)))
+ || bb == gimple_bb (use_stmt))
+ && (stmt_vinfo = vinfo_for_stmt (use_stmt))
+ && !STMT_SLP_TYPE (stmt_vinfo)
+ && (STMT_VINFO_RELEVANT (stmt_vinfo)
+ || VECTORIZABLE_CYCLE_DEF (STMT_VINFO_DEF_TYPE (stmt_vinfo)))
+ && !(gimple_code (use_stmt) == GIMPLE_PHI
+ && STMT_VINFO_DEF_TYPE (stmt_vinfo)
+ == vect_reduction_def))
+ vect_mark_slp_stmts (node, hybrid, i);
+
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_detect_hybrid_slp_stmts ((slp_tree) child);
+}
+
+
+/* Find stmts that must be both vectorized and SLPed. */
+
+void
+vect_detect_hybrid_slp (loop_vec_info loop_vinfo)
+{
+ unsigned int i;
+ VEC (slp_instance, heap) *slp_instances = LOOP_VINFO_SLP_INSTANCES (loop_vinfo);
+ slp_instance instance;
+
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "=== vect_detect_hybrid_slp ===");
+
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
+ vect_detect_hybrid_slp_stmts (SLP_INSTANCE_TREE (instance));
+}
+
+
+/* Create and initialize a new bb_vec_info struct for BB, as well as
+ stmt_vec_info structs for all the stmts in it. */
+
+static bb_vec_info
+new_bb_vec_info (basic_block bb)
+{
+ bb_vec_info res = NULL;
+ gimple_stmt_iterator gsi;
+
+ res = (bb_vec_info) xcalloc (1, sizeof (struct _bb_vec_info));
+ BB_VINFO_BB (res) = bb;
+
+ for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
+ {
+ gimple stmt = gsi_stmt (gsi);
+ gimple_set_uid (stmt, 0);
+ set_vinfo_for_stmt (stmt, new_stmt_vec_info (stmt, NULL, res));
+ }
+
+ BB_VINFO_STRIDED_STORES (res) = VEC_alloc (gimple, heap, 10);
+ BB_VINFO_SLP_INSTANCES (res) = VEC_alloc (slp_instance, heap, 2);
+
+ bb->aux = res;
+ return res;
+}
+
+
+/* Free BB_VINFO struct, as well as all the stmt_vec_info structs of all the
+ stmts in the basic block. */
+
+static void
+destroy_bb_vec_info (bb_vec_info bb_vinfo)
+{
+ VEC (slp_instance, heap) *slp_instances;
+ slp_instance instance;
+ basic_block bb;
+ gimple_stmt_iterator si;
+ unsigned i;
+
+ if (!bb_vinfo)
+ return;
+
+ bb = BB_VINFO_BB (bb_vinfo);
+
+ for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si))
+ {
+ gimple stmt = gsi_stmt (si);
+ stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
+
+ if (stmt_info)
+ /* Free stmt_vec_info. */
+ free_stmt_vec_info (stmt);
+ }
+
+ free_data_refs (BB_VINFO_DATAREFS (bb_vinfo));
+ free_dependence_relations (BB_VINFO_DDRS (bb_vinfo));
+ VEC_free (gimple, heap, BB_VINFO_STRIDED_STORES (bb_vinfo));
+ slp_instances = BB_VINFO_SLP_INSTANCES (bb_vinfo);
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
+ vect_free_slp_instance (instance);
+ VEC_free (slp_instance, heap, BB_VINFO_SLP_INSTANCES (bb_vinfo));
+ free (bb_vinfo);
+ bb->aux = NULL;
+}
+
+
+/* Analyze statements contained in SLP tree node after recursively analyzing
+ the subtree. Return TRUE if the operations are supported. */
+
+static bool
+vect_slp_analyze_node_operations (bb_vec_info bb_vinfo, slp_tree node)
+{
+ bool dummy;
+ int i;
+ gimple stmt;
+ slp_void_p child;
+
+ if (!node)
+ return true;
+
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ if (!vect_slp_analyze_node_operations (bb_vinfo, (slp_tree) child))
+ return false;
+
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt)
+ {
+ stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
+ gcc_assert (stmt_info);
+ gcc_assert (PURE_SLP_STMT (stmt_info));
+
+ if (!vect_analyze_stmt (stmt, &dummy, node))
+ return false;
+ }
+
+ return true;
+}
+
+
+/* Analyze statements in SLP instances of the basic block. Return TRUE if the
+ operations are supported. */
+
+static bool
+vect_slp_analyze_operations (bb_vec_info bb_vinfo)
+{
+ VEC (slp_instance, heap) *slp_instances = BB_VINFO_SLP_INSTANCES (bb_vinfo);
+ slp_instance instance;
+ int i;
+
+ for (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); )
+ {
+ if (!vect_slp_analyze_node_operations (bb_vinfo,
+ SLP_INSTANCE_TREE (instance)))
+ {
+ vect_free_slp_instance (instance);
+ VEC_ordered_remove (slp_instance, slp_instances, i);
+ }
+ else
+ i++;
+ }
+
+ if (!VEC_length (slp_instance, slp_instances))
+ return false;
+
+ return true;
+}
+
+/* Check if vectorization of the basic block is profitable. */
+
+static bool
+vect_bb_vectorization_profitable_p (bb_vec_info bb_vinfo)
+{
+ VEC (slp_instance, heap) *slp_instances = BB_VINFO_SLP_INSTANCES (bb_vinfo);
+ slp_instance instance;
+ int i;
+ unsigned int vec_outside_cost = 0, vec_inside_cost = 0, scalar_cost = 0;
+ unsigned int stmt_cost;
+ gimple stmt;
+ gimple_stmt_iterator si;
+ basic_block bb = BB_VINFO_BB (bb_vinfo);
+ stmt_vec_info stmt_info = NULL;
+ tree dummy_type = NULL;
+ int dummy = 0;
+
+ /* Calculate vector costs. */
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
+ {
+ vec_outside_cost += SLP_INSTANCE_OUTSIDE_OF_LOOP_COST (instance);
+ vec_inside_cost += SLP_INSTANCE_INSIDE_OF_LOOP_COST (instance);
+ }
+
+ /* Calculate scalar cost. */
+ for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si))
+ {
+ stmt = gsi_stmt (si);
+ stmt_info = vinfo_for_stmt (stmt);
+
+ if (!stmt_info || !STMT_VINFO_VECTORIZABLE (stmt_info)
+ || !PURE_SLP_STMT (stmt_info))
+ continue;
+
+ if (STMT_VINFO_DATA_REF (stmt_info))
+ {
+ if (DR_IS_READ (STMT_VINFO_DATA_REF (stmt_info)))
+ stmt_cost = targetm.vectorize.builtin_vectorization_cost
+ (scalar_load, dummy_type, dummy);
+ else
+ stmt_cost = targetm.vectorize.builtin_vectorization_cost
+ (scalar_store, dummy_type, dummy);
+ }
+ else
+ stmt_cost = targetm.vectorize.builtin_vectorization_cost
+ (scalar_stmt, dummy_type, dummy);
+
+ scalar_cost += stmt_cost;
+ }
- return true;
+ if (vect_print_dump_info (REPORT_COST))
+ {
+ fprintf (vect_dump, "Cost model analysis: \n");
+ fprintf (vect_dump, " Vector inside of basic block cost: %d\n",
+ vec_inside_cost);
+ fprintf (vect_dump, " Vector outside of basic block cost: %d\n",
+ vec_outside_cost);
+ fprintf (vect_dump, " Scalar cost of basic block: %d", scalar_cost);
}
- /* Failed to SLP. */
- /* Free the allocated memory. */
- vect_free_slp_tree (node);
- VEC_free (int, heap, load_permutation);
- VEC_free (slp_tree, heap, loads);
-
- if (slp_impossible)
+ /* Vectorization is profitable if its cost is less than the cost of scalar
+ version. */
+ if (vec_outside_cost + vec_inside_cost >= scalar_cost)
return false;
- /* SLP failed for this instance, but it is still possible to SLP other stmts
- in the loop. */
return true;
}
+/* Check if the basic block can be vectorized. */
-/* Check if there are stmts in the loop can be vectorized using SLP. Build SLP
- trees of packed scalar stmts if SLP is possible. */
-
-bool
-vect_analyze_slp (loop_vec_info loop_vinfo)
+static bb_vec_info
+vect_slp_analyze_bb_1 (basic_block bb)
{
- unsigned int i;
- VEC (gimple, heap) *strided_stores = LOOP_VINFO_STRIDED_STORES (loop_vinfo);
- gimple store;
+ bb_vec_info bb_vinfo;
+ VEC (ddr_p, heap) *ddrs;
+ VEC (slp_instance, heap) *slp_instances;
+ slp_instance instance;
+ int i;
+ int min_vf = 2;
+ int max_vf = MAX_VECTORIZATION_FACTOR;
- if (vect_print_dump_info (REPORT_SLP))
- fprintf (vect_dump, "=== vect_analyze_slp ===");
+ bb_vinfo = new_bb_vec_info (bb);
+ if (!bb_vinfo)
+ return NULL;
- for (i = 0; VEC_iterate (gimple, strided_stores, i, store); i++)
- if (!vect_analyze_slp_instance (loop_vinfo, store))
- {
- /* SLP failed. No instance can be SLPed in the loop. */
- if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
- fprintf (vect_dump, "SLP failed.");
+ if (!vect_analyze_data_refs (NULL, bb_vinfo, &min_vf))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: unhandled data-ref in basic "
+ "block.\n");
- return false;
- }
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
- return true;
-}
+ ddrs = BB_VINFO_DDRS (bb_vinfo);
+ if (!VEC_length (ddr_p, ddrs))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: not enough data-refs in basic "
+ "block.\n");
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
-/* For each possible SLP instance decide whether to SLP it and calculate overall
- unrolling factor needed to SLP the loop. */
+ if (!vect_analyze_data_ref_dependences (NULL, bb_vinfo, &max_vf)
+ || min_vf > max_vf)
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: unhandled data dependence "
+ "in basic block.\n");
-void
-vect_make_slp_decision (loop_vec_info loop_vinfo)
-{
- unsigned int i, unrolling_factor = 1;
- VEC (slp_instance, heap) *slp_instances = LOOP_VINFO_SLP_INSTANCES (loop_vinfo);
- slp_instance instance;
- int decided_to_slp = 0;
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
- if (vect_print_dump_info (REPORT_SLP))
- fprintf (vect_dump, "=== vect_make_slp_decision ===");
+ if (!vect_analyze_data_refs_alignment (NULL, bb_vinfo))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: bad data alignment in basic "
+ "block.\n");
+
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
- for (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); i++)
+ if (!vect_analyze_data_ref_accesses (NULL, bb_vinfo))
{
- /* FORNOW: SLP if you can. */
- if (unrolling_factor < SLP_INSTANCE_UNROLLING_FACTOR (instance))
- unrolling_factor = SLP_INSTANCE_UNROLLING_FACTOR (instance);
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: unhandled data access in basic "
+ "block.\n");
+
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
+
+ if (!vect_verify_datarefs_alignment (NULL, bb_vinfo))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: unsupported alignment in basic "
+ "block.\n");
+
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
+
+ /* Check the SLP opportunities in the basic block, analyze and build SLP
+ trees. */
+ if (!vect_analyze_slp (NULL, bb_vinfo))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: failed to find SLP opportunities "
+ "in basic block.\n");
- /* Mark all the stmts that belong to INSTANCE as PURE_SLP stmts. Later we
- call vect_detect_hybrid_slp () to find stmts that need hybrid SLP and
- loop-based vectorization. Such stmts will be marked as HYBRID. */
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
+
+ slp_instances = BB_VINFO_SLP_INSTANCES (bb_vinfo);
+
+ /* Mark all the statements that we want to vectorize as pure SLP and
+ relevant. */
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
+ {
vect_mark_slp_stmts (SLP_INSTANCE_TREE (instance), pure_slp, -1);
- decided_to_slp++;
+ vect_mark_slp_stmts_relevant (SLP_INSTANCE_TREE (instance));
}
- LOOP_VINFO_SLP_UNROLLING_FACTOR (loop_vinfo) = unrolling_factor;
+ if (!vect_slp_analyze_operations (bb_vinfo))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: bad operation in basic block.\n");
- if (decided_to_slp && vect_print_dump_info (REPORT_SLP))
- fprintf (vect_dump, "Decided to SLP %d instances. Unrolling factor %d",
- decided_to_slp, unrolling_factor);
-}
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
+ /* Cost model: check if the vectorization is worthwhile. */
+ if (flag_vect_cost_model
+ && !vect_bb_vectorization_profitable_p (bb_vinfo))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: vectorization is not "
+ "profitable.\n");
-/* Find stmts that must be both vectorized and SLPed (since they feed stmts that
- can't be SLPed) in the tree rooted at NODE. Mark such stmts as HYBRID. */
+ destroy_bb_vec_info (bb_vinfo);
+ return NULL;
+ }
-static void
-vect_detect_hybrid_slp_stmts (slp_tree node)
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "Basic block will be vectorized using SLP\n");
+
+ return bb_vinfo;
+}
+
+
+bb_vec_info
+vect_slp_analyze_bb (basic_block bb)
{
- int i;
- gimple stmt;
- imm_use_iterator imm_iter;
- gimple use_stmt;
+ bb_vec_info bb_vinfo;
+ int insns = 0;
+ gimple_stmt_iterator gsi;
+ unsigned int vector_sizes;
- if (!node)
- return;
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "===vect_slp_analyze_bb===\n");
- for (i = 0; VEC_iterate (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt); i++)
- if (PURE_SLP_STMT (vinfo_for_stmt (stmt))
- && TREE_CODE (gimple_op (stmt, 0)) == SSA_NAME)
- FOR_EACH_IMM_USE_STMT (use_stmt, imm_iter, gimple_op (stmt, 0))
- if (vinfo_for_stmt (use_stmt)
- && !STMT_SLP_TYPE (vinfo_for_stmt (use_stmt))
- && STMT_VINFO_RELEVANT (vinfo_for_stmt (use_stmt)))
- vect_mark_slp_stmts (node, hybrid, i);
+ for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
+ {
+ gimple stmt = gsi_stmt (gsi);
+ if (!is_gimple_debug (stmt)
+ && !gimple_nop_p (stmt)
+ && gimple_code (stmt) != GIMPLE_LABEL)
+ insns++;
+ }
- vect_detect_hybrid_slp_stmts (SLP_TREE_LEFT (node));
- vect_detect_hybrid_slp_stmts (SLP_TREE_RIGHT (node));
-}
+ if (insns > PARAM_VALUE (PARAM_SLP_MAX_INSNS_IN_BB))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
+ fprintf (vect_dump, "not vectorized: too many instructions in basic "
+ "block.\n");
+ return NULL;
+ }
-/* Find stmts that must be both vectorized and SLPed. */
+ /* Autodetect first vector size we try. */
+ current_vector_size = 0;
+ vector_sizes = targetm.vectorize.autovectorize_vector_sizes ();
-void
-vect_detect_hybrid_slp (loop_vec_info loop_vinfo)
-{
- unsigned int i;
- VEC (slp_instance, heap) *slp_instances = LOOP_VINFO_SLP_INSTANCES (loop_vinfo);
- slp_instance instance;
+ while (1)
+ {
+ bb_vinfo = vect_slp_analyze_bb_1 (bb);
+ if (bb_vinfo)
+ return bb_vinfo;
- if (vect_print_dump_info (REPORT_SLP))
- fprintf (vect_dump, "=== vect_detect_hybrid_slp ===");
+ destroy_bb_vec_info (bb_vinfo);
- for (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); i++)
- vect_detect_hybrid_slp_stmts (SLP_INSTANCE_TREE (instance));
+ vector_sizes &= ~current_vector_size;
+ if (vector_sizes == 0
+ || current_vector_size == 0)
+ return NULL;
+
+ /* Try the next biggest vector size. */
+ current_vector_size = 1 << floor_log2 (vector_sizes);
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "***** Re-trying analysis with "
+ "vector size %d\n", current_vector_size);
+ }
}
-/* SLP costs are calculated according to SLP instance unrolling factor (i.e.,
- the number of created vector stmts depends on the unrolling factor). However,
- the actual number of vector stmts for every SLP node depends on VF which is
- set later in vect_analyze_operations(). Hence, SLP costs should be updated.
- In this function we assume that the inside costs calculated in
- vect_model_xxx_cost are linear in ncopies. */
+
+/* SLP costs are calculated according to SLP instance unrolling factor (i.e.,
+ the number of created vector stmts depends on the unrolling factor).
+ However, the actual number of vector stmts for every SLP node depends on
+ VF which is set later in vect_analyze_operations (). Hence, SLP costs
+ should be updated. In this function we assume that the inside costs
+ calculated in vect_model_xxx_cost are linear in ncopies. */
void
vect_update_slp_costs_according_to_vf (loop_vec_info loop_vinfo)
if (vect_print_dump_info (REPORT_SLP))
fprintf (vect_dump, "=== vect_update_slp_costs_according_to_vf ===");
- for (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); i++)
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
/* We assume that costs are linear in ncopies. */
- SLP_INSTANCE_INSIDE_OF_LOOP_COST (instance) *= vf
- / SLP_INSTANCE_UNROLLING_FACTOR (instance);
+ SLP_INSTANCE_INSIDE_OF_LOOP_COST (instance) *= vf
+ / SLP_INSTANCE_UNROLLING_FACTOR (instance);
}
-/* For constant and loop invariant defs of SLP_NODE this function returns
- (vector) defs (VEC_OPRNDS) that will be used in the vectorized stmts.
- OP_NUM determines if we gather defs for operand 0 or operand 1 of the scalar
- stmts. NUMBER_OF_VECTORS is the number of vector defs to create. */
+
+/* For constant and loop invariant defs of SLP_NODE this function returns
+ (vector) defs (VEC_OPRNDS) that will be used in the vectorized stmts.
+ OP_NUM determines if we gather defs for operand 0 or operand 1 of the RHS of
+ scalar stmts. NUMBER_OF_VECTORS is the number of vector defs to create.
+ REDUC_INDEX is the index of the reduction operand in the statements, unless
+ it is -1. */
static void
-vect_get_constant_vectors (slp_tree slp_node, VEC(tree,heap) **vec_oprnds,
- unsigned int op_num, unsigned int number_of_vectors)
+vect_get_constant_vectors (tree op, slp_tree slp_node,
+ VEC (tree, heap) **vec_oprnds,
+ unsigned int op_num, unsigned int number_of_vectors,
+ int reduc_index)
{
VEC (gimple, heap) *stmts = SLP_TREE_SCALAR_STMTS (slp_node);
gimple stmt = VEC_index (gimple, stmts, 0);
stmt_vec_info stmt_vinfo = vinfo_for_stmt (stmt);
- tree vectype = STMT_VINFO_VECTYPE (stmt_vinfo);
int nunits;
tree vec_cst;
tree t = NULL_TREE;
int j, number_of_places_left_in_vector;
tree vector_type;
- tree op, vop;
+ tree vop;
int group_size = VEC_length (gimple, stmts);
unsigned int vec_num, i;
int number_of_copies = 1;
VEC (tree, heap) *voprnds = VEC_alloc (tree, heap, number_of_vectors);
bool constant_p, is_store;
+ tree neutral_op = NULL;
+ enum tree_code code = gimple_expr_code (stmt);
+ gimple def_stmt;
+ struct loop *loop;
+
+ if (STMT_VINFO_DEF_TYPE (stmt_vinfo) == vect_reduction_def
+ && reduc_index != -1)
+ {
+ op_num = reduc_index - 1;
+ op = gimple_op (stmt, reduc_index);
+ /* For additional copies (see the explanation of NUMBER_OF_COPIES below)
+ we need either neutral operands or the original operands. See
+ get_initial_def_for_reduction() for details. */
+ switch (code)
+ {
+ case WIDEN_SUM_EXPR:
+ case DOT_PROD_EXPR:
+ case PLUS_EXPR:
+ case MINUS_EXPR:
+ case BIT_IOR_EXPR:
+ case BIT_XOR_EXPR:
+ if (SCALAR_FLOAT_TYPE_P (TREE_TYPE (op)))
+ neutral_op = build_real (TREE_TYPE (op), dconst0);
+ else
+ neutral_op = build_int_cst (TREE_TYPE (op), 0);
+
+ break;
+
+ case MULT_EXPR:
+ if (SCALAR_FLOAT_TYPE_P (TREE_TYPE (op)))
+ neutral_op = build_real (TREE_TYPE (op), dconst1);
+ else
+ neutral_op = build_int_cst (TREE_TYPE (op), 1);
+
+ break;
+
+ case BIT_AND_EXPR:
+ neutral_op = build_int_cst (TREE_TYPE (op), -1);
+ break;
+
+ case MAX_EXPR:
+ case MIN_EXPR:
+ def_stmt = SSA_NAME_DEF_STMT (op);
+ loop = (gimple_bb (stmt))->loop_father;
+ neutral_op = PHI_ARG_DEF_FROM_EDGE (def_stmt,
+ loop_preheader_edge (loop));
+ break;
+
+ default:
+ neutral_op = NULL;
+ }
+ }
if (STMT_VINFO_DATA_REF (stmt_vinfo))
{
op = gimple_assign_rhs1 (stmt);
}
else
- {
- is_store = false;
- op = gimple_op (stmt, op_num + 1);
- }
+ is_store = false;
+
+ gcc_assert (op);
if (CONSTANT_CLASS_P (op))
- {
- vector_type = vectype;
- constant_p = true;
- }
+ constant_p = true;
else
- {
- vector_type = get_vectype_for_scalar_type (TREE_TYPE (op));
- gcc_assert (vector_type);
- constant_p = false;
- }
+ constant_p = false;
+ vector_type = get_vectype_for_scalar_type (TREE_TYPE (op));
+ gcc_assert (vector_type);
nunits = TYPE_VECTOR_SUBPARTS (vector_type);
/* NUMBER_OF_COPIES is the number of times we need to use the same values in
- created vectors. It is greater than 1 if unrolling is performed.
+ created vectors. It is greater than 1 if unrolling is performed.
For example, we have two scalar operands, s1 and s2 (e.g., group of
strided accesses of size two), while NUNITS is four (i.e., four scalars
- of this type can be packed in a vector). The output vector will contain
- two copies of each scalar operand: {s1, s2, s1, s2}. (NUMBER_OF_COPIES
+ of this type can be packed in a vector). The output vector will contain
+ two copies of each scalar operand: {s1, s2, s1, s2}. (NUMBER_OF_COPIES
will be 2).
- If GROUP_SIZE > NUNITS, the scalars will be split into several vectors
+ If GROUP_SIZE > NUNITS, the scalars will be split into several vectors
containing the operands.
For example, NUNITS is four as before, and the group size is 8
- (s1, s2, ..., s8). We will create two vectors {s1, s2, s3, s4} and
+ (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_places_left_in_vector = nunits;
if (is_store)
op = gimple_assign_rhs1 (stmt);
else
- op = gimple_op (stmt, op_num + 1);
-
+ {
+ switch (code)
+ {
+ case COND_EXPR:
+ if (op_num == 0 || op_num == 1)
+ {
+ tree cond = gimple_assign_rhs1 (stmt);
+ op = TREE_OPERAND (cond, op_num);
+ }
+ else
+ {
+ if (op_num == 2)
+ op = gimple_assign_rhs2 (stmt);
+ else
+ op = gimple_assign_rhs3 (stmt);
+ }
+ break;
+
+ case CALL_EXPR:
+ op = gimple_call_arg (stmt, op_num);
+ break;
+
+ default:
+ op = gimple_op (stmt, op_num + 1);
+ }
+ }
+
+ if (reduc_index != -1)
+ {
+ loop = (gimple_bb (stmt))->loop_father;
+ def_stmt = SSA_NAME_DEF_STMT (op);
+
+ gcc_assert (loop);
+
+ /* Get the def before the loop. In reduction chain we have only
+ one initial value. */
+ if ((j != (number_of_copies - 1)
+ || (GROUP_FIRST_ELEMENT (vinfo_for_stmt (stmt))
+ && i != 0))
+ && neutral_op)
+ op = neutral_op;
+ else
+ op = PHI_ARG_DEF_FROM_EDGE (def_stmt,
+ loop_preheader_edge (loop));
+ }
+
/* Create 'vect_ = {op0,op1,...,opn}'. */
t = tree_cons (NULL_TREE, op, t);
}
}
- /* Since the vectors are created in the reverse order, we should invert
+ /* Since the vectors are created in the reverse order, we should invert
them. */
vec_num = VEC_length (tree, voprnds);
for (j = vec_num - 1; j >= 0; j--)
VEC_free (tree, heap, voprnds);
/* In case that VF is greater than the unrolling factor needed for the SLP
- group of stmts, NUMBER_OF_VECTORS to be created is greater than
- NUMBER_OF_SCALARS/NUNITS or NUNITS/NUMBER_OF_SCALARS, and hence we have
+ group of stmts, NUMBER_OF_VECTORS to be created is greater than
+ NUMBER_OF_SCALARS/NUNITS or NUNITS/NUMBER_OF_SCALARS, and hence we have
to replicate the vectors. */
while (number_of_vectors > VEC_length (tree, *vec_oprnds))
{
- for (i = 0; VEC_iterate (tree, *vec_oprnds, i, vop) && i < vec_num; i++)
- VEC_quick_push (tree, *vec_oprnds, vop);
+ tree neutral_vec = NULL;
+
+ if (neutral_op)
+ {
+ if (!neutral_vec)
+ neutral_vec = build_vector_from_val (vector_type, neutral_op);
+
+ VEC_quick_push (tree, *vec_oprnds, neutral_vec);
+ }
+ else
+ {
+ for (i = 0; VEC_iterate (tree, *vec_oprnds, i, vop) && i < vec_num; i++)
+ VEC_quick_push (tree, *vec_oprnds, vop);
+ }
}
}
gcc_assert (SLP_TREE_VEC_STMTS (slp_node));
- for (i = 0;
- VEC_iterate (gimple, SLP_TREE_VEC_STMTS (slp_node), i, vec_def_stmt);
- i++)
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_VEC_STMTS (slp_node), i, vec_def_stmt)
{
gcc_assert (vec_def_stmt);
vec_oprnd = gimple_get_lhs (vec_def_stmt);
}
-/* Get vectorized definitions for SLP_NODE.
- If the scalar definitions are loop invariants or constants, collect them and
+/* Get vectorized definitions for SLP_NODE.
+ If the scalar definitions are loop invariants or constants, collect them and
call vect_get_constant_vectors() to create vector stmts.
Otherwise, the def-stmts must be already vectorized and the vectorized stmts
- must be stored in the LEFT/RIGHT node of SLP_NODE, and we call
- vect_get_slp_vect_defs() to retrieve them.
- If VEC_OPRNDS1 is NULL, don't get vector defs for the second operand (from
- the right node. This is used when the second operand must remain scalar. */
-
+ must be stored in the corresponding child of SLP_NODE, and we call
+ vect_get_slp_vect_defs () to retrieve them. */
+
void
-vect_get_slp_defs (slp_tree slp_node, VEC (tree,heap) **vec_oprnds0,
- VEC (tree,heap) **vec_oprnds1)
+vect_get_slp_defs (VEC (tree, heap) *ops, slp_tree slp_node,
+ VEC (slp_void_p, heap) **vec_oprnds, int reduc_index)
{
- gimple first_stmt;
- enum tree_code code;
- int number_of_vects;
- HOST_WIDE_INT lhs_size_unit, rhs_size_unit;
+ gimple first_stmt, first_def;
+ int number_of_vects = 0, i;
+ unsigned int child_index = 0;
+ HOST_WIDE_INT lhs_size_unit, rhs_size_unit;
+ slp_tree child = NULL;
+ VEC (tree, heap) *vec_defs;
+ tree oprnd, def_lhs;
+ bool vectorized_defs;
first_stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (slp_node), 0);
- /* The number of vector defs is determined by the number of vector statements
- in the node from which we get those statements. */
- if (SLP_TREE_LEFT (slp_node))
- number_of_vects = SLP_TREE_NUMBER_OF_VEC_STMTS (SLP_TREE_LEFT (slp_node));
- else
+ FOR_EACH_VEC_ELT (tree, ops, i, oprnd)
{
- number_of_vects = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node);
- /* Number of vector stmts was calculated according to LHS in
- vect_schedule_slp_instance(), fix it by replacing LHS with RHS, if
- necessary. See vect_get_smallest_scalar_type() for details. */
- vect_get_smallest_scalar_type (first_stmt, &lhs_size_unit,
- &rhs_size_unit);
- if (rhs_size_unit != lhs_size_unit)
+ /* For each operand we check if it has vectorized definitions in a child
+ node or we need to create them (for invariants and constants). We
+ check if the LHS of the first stmt of the next child matches OPRND.
+ If it does, we found the correct child. Otherwise, we call
+ vect_get_constant_vectors (), and not advance CHILD_INDEX in order
+ to check this child node for the next operand. */
+ vectorized_defs = false;
+ if (VEC_length (slp_void_p, SLP_TREE_CHILDREN (slp_node)) > child_index)
{
- number_of_vects *= rhs_size_unit;
- number_of_vects /= lhs_size_unit;
- }
- }
-
- /* Allocate memory for vectorized defs. */
- *vec_oprnds0 = VEC_alloc (tree, heap, number_of_vects);
+ child = (slp_tree) VEC_index (slp_void_p,
+ SLP_TREE_CHILDREN (slp_node),
+ child_index);
+ first_def = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (child), 0);
+
+ /* In the end of a pattern sequence we have a use of the original stmt,
+ so we need to compare OPRND with the original def. */
+ if (is_pattern_stmt_p (vinfo_for_stmt (first_def))
+ && !STMT_VINFO_IN_PATTERN_P (vinfo_for_stmt (first_stmt))
+ && !is_pattern_stmt_p (vinfo_for_stmt (first_stmt)))
+ first_def = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (first_def));
+
+ if (is_gimple_call (first_def))
+ def_lhs = gimple_call_lhs (first_def);
+ else
+ def_lhs = gimple_assign_lhs (first_def);
- /* SLP_NODE corresponds either to a group of stores or to a group of
- unary/binary operations. We don't call this function for loads. */
- if (SLP_TREE_LEFT (slp_node))
- /* The defs are already vectorized. */
- vect_get_slp_vect_defs (SLP_TREE_LEFT (slp_node), vec_oprnds0);
- else
- /* Build vectors from scalar defs. */
- vect_get_constant_vectors (slp_node, vec_oprnds0, 0, number_of_vects);
+ if (operand_equal_p (oprnd, def_lhs, 0))
+ {
+ /* The number of vector defs is determined by the number of
+ vector statements in the node from which we get those
+ statements. */
+ number_of_vects = SLP_TREE_NUMBER_OF_VEC_STMTS (child);
+ vectorized_defs = true;
+ child_index++;
+ }
+ }
- if (STMT_VINFO_DATA_REF (vinfo_for_stmt (first_stmt)))
- /* Since we don't call this function with loads, this is a group of
- stores. */
- return;
+ if (!vectorized_defs)
+ {
+ if (i == 0)
+ {
+ number_of_vects = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node);
+ /* Number of vector stmts was calculated according to LHS in
+ vect_schedule_slp_instance (), fix it by replacing LHS with
+ RHS, if necessary. See vect_get_smallest_scalar_type () for
+ details. */
+ vect_get_smallest_scalar_type (first_stmt, &lhs_size_unit,
+ &rhs_size_unit);
+ if (rhs_size_unit != lhs_size_unit)
+ {
+ number_of_vects *= rhs_size_unit;
+ number_of_vects /= lhs_size_unit;
+ }
+ }
+ }
- code = gimple_assign_rhs_code (first_stmt);
- if (get_gimple_rhs_class (code) != GIMPLE_BINARY_RHS || !vec_oprnds1)
- return;
+ /* Allocate memory for vectorized defs. */
+ vec_defs = VEC_alloc (tree, heap, number_of_vects);
- /* The number of vector defs is determined by the number of vector statements
- in the node from which we get those statements. */
- if (SLP_TREE_RIGHT (slp_node))
- number_of_vects = SLP_TREE_NUMBER_OF_VEC_STMTS (SLP_TREE_RIGHT (slp_node));
- else
- number_of_vects = SLP_TREE_NUMBER_OF_VEC_STMTS (slp_node);
+ /* For reduction defs we call vect_get_constant_vectors (), since we are
+ looking for initial loop invariant values. */
+ if (vectorized_defs && reduc_index == -1)
+ /* The defs are already vectorized. */
+ vect_get_slp_vect_defs (child, &vec_defs);
+ else
+ /* Build vectors from scalar defs. */
+ vect_get_constant_vectors (oprnd, slp_node, &vec_defs, i,
+ number_of_vects, reduc_index);
- *vec_oprnds1 = VEC_alloc (tree, heap, number_of_vects);
+ VEC_quick_push (slp_void_p, *vec_oprnds, (slp_void_p) vec_defs);
- if (SLP_TREE_RIGHT (slp_node))
- /* The defs are already vectorized. */
- vect_get_slp_vect_defs (SLP_TREE_RIGHT (slp_node), vec_oprnds1);
- else
- /* Build vectors from scalar defs. */
- vect_get_constant_vectors (slp_node, vec_oprnds1, 1, number_of_vects);
+ /* For reductions, we only need initial values. */
+ if (reduc_index != -1)
+ return;
+ }
}
-/* Create NCOPIES permutation statements using the mask MASK_BYTES (by
+
+/* Create NCOPIES permutation statements using the mask MASK_BYTES (by
building a vector of type MASK_TYPE from it) and two input vectors placed in
DR_CHAIN at FIRST_VEC_INDX and SECOND_VEC_INDX for the first copy and
shifting by STRIDE elements of DR_CHAIN for every copy.
(STRIDE is the number of vectorized stmts for NODE divided by the number of
- copies).
+ copies).
VECT_STMTS_COUNTER specifies the index in the vectorized stmts of NODE, where
the created stmts must be inserted. */
static inline void
-vect_create_mask_and_perm (gimple stmt, gimple next_scalar_stmt,
- int *mask_array, int mask_nunits,
- tree mask_element_type, tree mask_type,
- int first_vec_indx, int second_vec_indx,
- gimple_stmt_iterator *gsi, slp_tree node,
- tree builtin_decl, tree vectype,
- VEC(tree,heap) *dr_chain,
+vect_create_mask_and_perm (gimple stmt, gimple next_scalar_stmt,
+ tree mask, int first_vec_indx, int second_vec_indx,
+ gimple_stmt_iterator *gsi, slp_tree node,
+ tree vectype, VEC(tree,heap) *dr_chain,
int ncopies, int vect_stmts_counter)
{
- tree t = NULL_TREE, mask_vec, mask, perm_dest;
+ tree perm_dest;
gimple perm_stmt = NULL;
stmt_vec_info next_stmt_info;
- int i, group_size, stride, dr_chain_size;
+ int i, stride;
tree first_vec, second_vec, data_ref;
- tree sym;
- ssa_op_iter iter;
- VEC (tree, heap) *params = NULL;
-
- /* Create a vector mask. */
- for (i = mask_nunits - 1; i >= 0; --i)
- t = tree_cons (NULL_TREE, build_int_cst (mask_element_type, mask_array[i]),
- t);
- mask_vec = build_vector (mask_type, t);
- mask = vect_init_vector (stmt, mask_vec, mask_type, NULL);
-
- group_size = VEC_length (gimple, SLP_TREE_SCALAR_STMTS (node));
+
stride = SLP_TREE_NUMBER_OF_VEC_STMTS (node) / ncopies;
- dr_chain_size = VEC_length (tree, dr_chain);
- /* Initialize the vect stmts of NODE to properly insert the generated
+ /* Initialize the vect stmts of NODE to properly insert the generated
stmts later. */
- for (i = VEC_length (gimple, SLP_TREE_VEC_STMTS (node));
+ for (i = VEC_length (gimple, SLP_TREE_VEC_STMTS (node));
i < (int) SLP_TREE_NUMBER_OF_VEC_STMTS (node); i++)
VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (node), NULL);
first_vec = VEC_index (tree, dr_chain, first_vec_indx);
second_vec = VEC_index (tree, dr_chain, second_vec_indx);
- /* Build argument list for the vectorized call. */
- VEC_free (tree, heap, params);
- params = VEC_alloc (tree, heap, 3);
- VEC_quick_push (tree, params, first_vec);
- VEC_quick_push (tree, params, second_vec);
- VEC_quick_push (tree, params, mask);
-
/* Generate the permute statement. */
- perm_stmt = gimple_build_call_vec (builtin_decl, params);
+ perm_stmt = gimple_build_assign_with_ops3 (VEC_PERM_EXPR, perm_dest,
+ first_vec, second_vec, mask);
data_ref = make_ssa_name (perm_dest, perm_stmt);
- gimple_call_set_lhs (perm_stmt, data_ref);
+ gimple_set_lhs (perm_stmt, data_ref);
vect_finish_stmt_generation (stmt, perm_stmt, gsi);
- FOR_EACH_SSA_TREE_OPERAND (sym, perm_stmt, iter, SSA_OP_ALL_VIRTUALS)
- {
- if (TREE_CODE (sym) == SSA_NAME)
- sym = SSA_NAME_VAR (sym);
- mark_sym_for_renaming (sym);
- }
- /* Store the vector statement in NODE. */
- VEC_replace (gimple, SLP_TREE_VEC_STMTS (node),
+ /* Store the vector statement in NODE. */
+ VEC_replace (gimple, SLP_TREE_VEC_STMTS (node),
stride * i + vect_stmts_counter, perm_stmt);
first_vec_indx += stride;
}
-/* Given FIRST_MASK_ELEMENT - the mask element in element representation,
+/* Given FIRST_MASK_ELEMENT - the mask element in element representation,
return in CURRENT_MASK_ELEMENT its equivalent in target specific
- representation. Check that the mask is valid and return FALSE if not.
+ representation. Check that the mask is valid and return FALSE if not.
Return TRUE in NEED_NEXT_VECTOR if the permutation requires to move to
the next vector, i.e., the current first vector is not needed. */
-
+
static bool
-vect_get_mask_element (gimple stmt, int first_mask_element, int m,
+vect_get_mask_element (gimple stmt, int first_mask_element, int m,
int mask_nunits, bool only_one_vec, int index,
- int *mask, int *current_mask_element,
- bool *need_next_vector)
+ unsigned char *mask, int *current_mask_element,
+ bool *need_next_vector, int *number_of_mask_fixes,
+ bool *mask_fixed, bool *needs_first_vector)
{
int i;
- static int number_of_mask_fixes = 1;
- static bool mask_fixed = false;
- static bool needs_first_vector = false;
/* Convert to target specific representation. */
*current_mask_element = first_mask_element + m;
/* Adjust the value in case it's a mask for second and third vectors. */
- *current_mask_element -= mask_nunits * (number_of_mask_fixes - 1);
+ *current_mask_element -= mask_nunits * (*number_of_mask_fixes - 1);
if (*current_mask_element < mask_nunits)
- needs_first_vector = true;
+ *needs_first_vector = true;
/* We have only one input vector to permute but the mask accesses values in
the next vector as well. */
/* The mask requires the next vector. */
if (*current_mask_element >= mask_nunits * 2)
{
- if (needs_first_vector || mask_fixed)
+ if (*needs_first_vector || *mask_fixed)
{
/* We either need the first vector too or have already moved to the
- next vector. In both cases, this permutation needs three
+ next vector. In both cases, this permutation needs three
vectors. */
if (vect_print_dump_info (REPORT_DETAILS))
{
/* We move to the next vector, dropping the first one and working with
the second and the third - we need to adjust the values of the mask
accordingly. */
- *current_mask_element -= mask_nunits * number_of_mask_fixes;
+ *current_mask_element -= mask_nunits * *number_of_mask_fixes;
for (i = 0; i < index; i++)
- mask[i] -= mask_nunits * number_of_mask_fixes;
+ mask[i] -= mask_nunits * *number_of_mask_fixes;
- (number_of_mask_fixes)++;
- mask_fixed = true;
+ (*number_of_mask_fixes)++;
+ *mask_fixed = true;
}
- *need_next_vector = mask_fixed;
+ *need_next_vector = *mask_fixed;
/* This was the last element of this mask. Start a new one. */
if (index == mask_nunits - 1)
{
- number_of_mask_fixes = 1;
- mask_fixed = false;
- needs_first_vector = false;
+ *number_of_mask_fixes = 1;
+ *mask_fixed = false;
+ *needs_first_vector = false;
}
return true;
{
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
tree mask_element_type = NULL_TREE, mask_type;
- int i, j, k, m, scale, mask_nunits, nunits, vec_index = 0, scalar_index;
+ int i, j, k, nunits, vec_index = 0, scalar_index;
slp_tree node;
- tree vectype = STMT_VINFO_VECTYPE (stmt_info), builtin_decl;
+ 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, *mask, current_mask_element, ncopies;
+ int index, unroll_factor, current_mask_element, ncopies;
+ unsigned char *mask;
bool only_one_vec = false, need_next_vector = false;
int first_vec_index, second_vec_index, orig_vec_stmts_num, vect_stmts_counter;
+ int number_of_mask_fixes = 1;
+ bool mask_fixed = false;
+ bool needs_first_vector = false;
+ enum machine_mode mode;
- if (!targetm.vectorize.builtin_vec_perm)
- {
- if (vect_print_dump_info (REPORT_DETAILS))
- {
- fprintf (vect_dump, "no builtin for vect permute for ");
- print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
- }
-
- return false;
- }
+ mode = TYPE_MODE (vectype);
- builtin_decl = targetm.vectorize.builtin_vec_perm (vectype,
- &mask_element_type);
- if (!builtin_decl || !mask_element_type)
+ if (!can_vec_perm_p (mode, false, NULL))
{
if (vect_print_dump_info (REPORT_DETAILS))
{
- fprintf (vect_dump, "no builtin for vect permute for ");
+ fprintf (vect_dump, "no vect permute for ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
}
-
- return false;
+ return false;
}
+ /* The generic VEC_PERM_EXPR code always uses an integral type of the
+ same size as the vector element being permuted. */
+ mask_element_type
+ = lang_hooks.types.type_for_size
+ (TREE_INT_CST_LOW (TYPE_SIZE (TREE_TYPE (vectype))), 1);
mask_type = get_vectype_for_scalar_type (mask_element_type);
- mask_nunits = TYPE_VECTOR_SUBPARTS (mask_type);
- mask = (int *) xmalloc (sizeof (int) * mask_nunits);
nunits = TYPE_VECTOR_SUBPARTS (vectype);
- scale = mask_nunits / nunits;
+ mask = XALLOCAVEC (unsigned char, nunits);
unroll_factor = SLP_INSTANCE_UNROLLING_FACTOR (slp_node_instance);
/* The number of vector stmts to generate based only on SLP_NODE_INSTANCE
unrolling factor. */
- orig_vec_stmts_num = group_size *
+ orig_vec_stmts_num = group_size *
SLP_INSTANCE_UNROLLING_FACTOR (slp_node_instance) / nunits;
if (orig_vec_stmts_num == 1)
only_one_vec = true;
- /* Number of copies is determined by the final vectorization factor
+ /* Number of copies is determined by the final vectorization factor
relatively to SLP_NODE_INSTANCE unrolling factor. */
- ncopies = vf / SLP_INSTANCE_UNROLLING_FACTOR (slp_node_instance);
+ ncopies = vf / SLP_INSTANCE_UNROLLING_FACTOR (slp_node_instance);
- /* 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
- location in each node, and the vector size is 4. I.e., we have a
- a0b0c0a1b1c1... sequence and we need to create the following vectors:
+ /* 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
+ location in each node, and the vector size is 4. I.e., we have a
+ a0b0c0a1b1c1... sequence and we need to create the following vectors:
for a's: a0a0a0a1 a1a1a2a2 a2a3a3a3
for b's: b0b0b0b1 b1b1b2b2 b2b3b3b3
...
- The masks for a's should be: {0,0,0,3} {3,3,6,6} {6,9,9,9} (in target
- scpecific type, e.g., in bytes for Altivec.
- The last mask is illegal since we assume two operands for permute
- operation, and the mask element values can't be outside that range. Hence,
- the last mask must be converted into {2,5,5,5}.
- For the first two permutations we need the first and the second input
+ The masks for a's should be: {0,0,0,3} {3,3,6,6} {6,9,9,9}.
+ The last mask is illegal since we assume two operands for permute
+ operation, and the mask element values can't be outside that range.
+ Hence, the last mask must be converted into {2,5,5,5}.
+ For the first two permutations we need the first and the second input
vectors: {a0,b0,c0,a1} and {b1,c1,a2,b2}, and for the last permutation
- we need the second and the third vectors: {b1,c1,a2,b2} and
+ we need the second and the third vectors: {b1,c1,a2,b2} and
{c2,a3,b3,c3}. */
- for (i = 0;
- VEC_iterate (slp_tree, SLP_INSTANCE_LOADS (slp_node_instance),
- i, node);
- i++)
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (slp_node_instance), i, node)
{
scalar_index = 0;
index = 0;
{
for (k = 0; k < group_size; k++)
{
- first_mask_element = (i + j * group_size) * scale;
- for (m = 0; m < scale; m++)
+ first_mask_element = i + j * group_size;
+ if (!vect_get_mask_element (stmt, first_mask_element, 0,
+ nunits, only_one_vec, index,
+ mask, ¤t_mask_element,
+ &need_next_vector,
+ &number_of_mask_fixes, &mask_fixed,
+ &needs_first_vector))
+ return false;
+ mask[index++] = current_mask_element;
+
+ if (index == nunits)
{
- if (!vect_get_mask_element (stmt, first_mask_element, m,
- mask_nunits, only_one_vec, index, mask,
- ¤t_mask_element, &need_next_vector))
- return false;
+ tree mask_vec = NULL;
+
+ if (!can_vec_perm_p (mode, false, mask))
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ {
+ fprintf (vect_dump, "unsupported vect permute { ");
+ for (i = 0; i < nunits; ++i)
+ fprintf (vect_dump, "%d ", mask[i]);
+ fprintf (vect_dump, "}\n");
+ }
+ return false;
+ }
- mask[index++] = current_mask_element;
- }
+ while (--index >= 0)
+ {
+ tree t = build_int_cst (mask_element_type, mask[index]);
+ mask_vec = tree_cons (NULL, t, mask_vec);
+ }
+ mask_vec = build_vector (mask_type, mask_vec);
+ index = 0;
- if (index == mask_nunits)
- {
- index = 0;
if (!analyze_only)
{
if (need_next_vector)
SLP_TREE_SCALAR_STMTS (node), scalar_index++);
vect_create_mask_and_perm (stmt, next_scalar_stmt,
- mask, mask_nunits, mask_element_type, mask_type,
- first_vec_index, second_vec_index, gsi, node,
- builtin_decl, vectype, dr_chain, ncopies,
- vect_stmts_counter++);
+ mask_vec, first_vec_index, second_vec_index,
+ gsi, node, vectype, dr_chain,
+ ncopies, vect_stmts_counter++);
}
- }
- }
- }
- }
+ }
+ }
+ }
+ }
- free (mask);
return true;
}
static bool
vect_schedule_slp_instance (slp_tree node, slp_instance instance,
- unsigned int vectorization_factor)
+ unsigned int vectorization_factor)
{
gimple stmt;
bool strided_store, is_store;
tree vectype;
int i;
slp_tree loads_node;
+ slp_void_p child;
if (!node)
return false;
- vect_schedule_slp_instance (SLP_TREE_LEFT (node), instance,
- vectorization_factor);
- vect_schedule_slp_instance (SLP_TREE_RIGHT (node), instance,
- vectorization_factor);
-
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_schedule_slp_instance ((slp_tree) child, instance,
+ vectorization_factor);
+
stmt = VEC_index (gimple, SLP_TREE_SCALAR_STMTS (node), 0);
stmt_info = vinfo_for_stmt (stmt);
/* VECTYPE is the type of the destination. */
- vectype = get_vectype_for_scalar_type (TREE_TYPE (gimple_assign_lhs (stmt)));
+ vectype = STMT_VINFO_VECTYPE (stmt_info);
nunits = (unsigned int) TYPE_VECTOR_SUBPARTS (vectype);
group_size = SLP_INSTANCE_GROUP_SIZE (instance);
/* For each SLP instance calculate number of vector stmts to be created
- for the scalar stmts in each node of the SLP tree. Number of vector
+ 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. */
all the nodes that participate in that permutation. */
if (SLP_INSTANCE_LOAD_PERMUTATION (instance))
{
- for (i = 0;
- VEC_iterate (slp_tree, SLP_INSTANCE_LOADS (instance), i, loads_node);
- i++)
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (instance), i, loads_node)
{
if (!SLP_TREE_VEC_STMTS (loads_node))
{
{
fprintf (vect_dump, "------>vectorizing SLP node starting from: ");
print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
- }
+ }
/* Loads should be inserted before the first load. */
if (SLP_INSTANCE_FIRST_LOAD_STMT (instance)
&& STMT_VINFO_STRIDED_ACCESS (stmt_info)
- && !REFERENCE_CLASS_P (gimple_get_lhs (stmt)))
+ && !REFERENCE_CLASS_P (gimple_get_lhs (stmt))
+ && SLP_INSTANCE_LOAD_PERMUTATION (instance))
si = gsi_for_stmt (SLP_INSTANCE_FIRST_LOAD_STMT (instance));
+ else if (is_pattern_stmt_p (stmt_info))
+ si = gsi_for_stmt (STMT_VINFO_RELATED_STMT (stmt_info));
else
si = gsi_for_stmt (stmt);
- is_store = vect_transform_stmt (stmt, &si, &strided_store, node, instance);
- if (is_store)
- {
- if (DR_GROUP_FIRST_DR (stmt_info))
- /* If IS_STORE is TRUE, the vectorization of the
- interleaving chain was completed - free all the stores in
- the chain. */
- vect_remove_stores (DR_GROUP_FIRST_DR (stmt_info));
- else
- /* FORNOW: SLP originates only from strided stores. */
- gcc_unreachable ();
+ /* Stores should be inserted just before the last store. */
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info)
+ && REFERENCE_CLASS_P (gimple_get_lhs (stmt)))
+ {
+ gimple last_store = vect_find_last_store_in_slp_instance (instance);
+ if (is_pattern_stmt_p (vinfo_for_stmt (last_store)))
+ last_store = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (last_store));
+ si = gsi_for_stmt (last_store);
+ }
- return true;
+ /* Mark the first element of the reduction chain as reduction to properly
+ transform the node. In the analysis phase only the last element of the
+ chain is marked as reduction. */
+ if (GROUP_FIRST_ELEMENT (stmt_info) && !STMT_VINFO_STRIDED_ACCESS (stmt_info)
+ && GROUP_FIRST_ELEMENT (stmt_info) == stmt)
+ {
+ STMT_VINFO_DEF_TYPE (stmt_info) = vect_reduction_def;
+ STMT_VINFO_TYPE (stmt_info) = reduc_vec_info_type;
}
- /* FORNOW: SLP originates only from strided stores. */
- return false;
+ is_store = vect_transform_stmt (stmt, &si, &strided_store, node, instance);
+ return is_store;
+}
+
+/* Replace scalar calls from SLP node NODE with setting of their lhs to zero.
+ For loop vectorization this is done in vectorizable_call, but for SLP
+ it needs to be deferred until end of vect_schedule_slp, because multiple
+ SLP instances may refer to the same scalar stmt. */
+
+static void
+vect_remove_slp_scalar_calls (slp_tree node)
+{
+ gimple stmt, new_stmt;
+ gimple_stmt_iterator gsi;
+ int i;
+ slp_void_p child;
+ tree lhs;
+ stmt_vec_info stmt_info;
+
+ if (!node)
+ return;
+
+ FOR_EACH_VEC_ELT (slp_void_p, SLP_TREE_CHILDREN (node), i, child)
+ vect_remove_slp_scalar_calls ((slp_tree) child);
+
+ FOR_EACH_VEC_ELT (gimple, SLP_TREE_SCALAR_STMTS (node), i, stmt)
+ {
+ if (!is_gimple_call (stmt) || gimple_bb (stmt) == NULL)
+ continue;
+ stmt_info = vinfo_for_stmt (stmt);
+ if (stmt_info == NULL
+ || is_pattern_stmt_p (stmt_info)
+ || !PURE_SLP_STMT (stmt_info))
+ continue;
+ lhs = gimple_call_lhs (stmt);
+ new_stmt = gimple_build_assign (lhs, build_zero_cst (TREE_TYPE (lhs)));
+ set_vinfo_for_stmt (new_stmt, stmt_info);
+ set_vinfo_for_stmt (stmt, NULL);
+ STMT_VINFO_STMT (stmt_info) = new_stmt;
+ gsi = gsi_for_stmt (stmt);
+ gsi_replace (&gsi, new_stmt, false);
+ SSA_NAME_DEF_STMT (gimple_assign_lhs (new_stmt)) = new_stmt;
+ }
}
+/* Generate vector code for all SLP instances in the loop/basic block. */
bool
-vect_schedule_slp (loop_vec_info loop_vinfo)
+vect_schedule_slp (loop_vec_info loop_vinfo, bb_vec_info bb_vinfo)
{
- VEC (slp_instance, heap) *slp_instances =
- LOOP_VINFO_SLP_INSTANCES (loop_vinfo);
+ VEC (slp_instance, heap) *slp_instances;
slp_instance instance;
- unsigned int i;
+ slp_tree loads_node;
+ unsigned int i, j, vf;
bool is_store = false;
- for (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); i++)
+ if (loop_vinfo)
+ {
+ slp_instances = LOOP_VINFO_SLP_INSTANCES (loop_vinfo);
+ vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
+ }
+ else
+ {
+ slp_instances = BB_VINFO_SLP_INSTANCES (bb_vinfo);
+ vf = 1;
+ }
+
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
{
/* Schedule the tree of INSTANCE. */
is_store = vect_schedule_slp_instance (SLP_INSTANCE_TREE (instance),
- instance, LOOP_VINFO_VECT_FACTOR (loop_vinfo));
-
- if (vect_print_dump_info (REPORT_VECTORIZED_LOOPS)
- || vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
+ instance, vf);
+
+ /* Clear STMT_VINFO_VEC_STMT of all loads. With shared loads
+ between SLP instances we fail to properly initialize the
+ vectorized SLP stmts and confuse different load permutations. */
+ FOR_EACH_VEC_ELT (slp_tree, SLP_INSTANCE_LOADS (instance), j, loads_node)
+ STMT_VINFO_VEC_STMT
+ (vinfo_for_stmt
+ (VEC_index (gimple, SLP_TREE_SCALAR_STMTS (loads_node), 0))) = NULL;
+
+ if (vect_print_dump_info (REPORT_VECTORIZED_LOCATIONS)
+ || vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS))
fprintf (vect_dump, "vectorizing stmts using SLP.");
}
+ FOR_EACH_VEC_ELT (slp_instance, slp_instances, i, instance)
+ {
+ slp_tree root = SLP_INSTANCE_TREE (instance);
+ gimple store;
+ unsigned int j;
+ gimple_stmt_iterator gsi;
+
+ /* Remove scalar call stmts. Do not do this for basic-block
+ vectorization as not all uses may be vectorized.
+ ??? Why should this be necessary? DCE should be able to
+ remove the stmts itself.
+ ??? For BB vectorization we can as well remove scalar
+ stmts starting from the SLP tree root if they have no
+ uses. */
+ if (loop_vinfo)
+ vect_remove_slp_scalar_calls (root);
+
+ for (j = 0; VEC_iterate (gimple, SLP_TREE_SCALAR_STMTS (root), j, store)
+ && j < SLP_INSTANCE_GROUP_SIZE (instance); j++)
+ {
+ if (!STMT_VINFO_DATA_REF (vinfo_for_stmt (store)))
+ break;
+
+ if (is_pattern_stmt_p (vinfo_for_stmt (store)))
+ store = STMT_VINFO_RELATED_STMT (vinfo_for_stmt (store));
+ /* Free the attached stmt_vec_info and remove the stmt. */
+ gsi = gsi_for_stmt (store);
+ gsi_remove (&gsi, true);
+ free_stmt_vec_info (store);
+ }
+ }
+
return is_store;
}
+
+
+/* Vectorize the basic block. */
+
+void
+vect_slp_transform_bb (basic_block bb)
+{
+ bb_vec_info bb_vinfo = vec_info_for_bb (bb);
+ gimple_stmt_iterator si;
+
+ gcc_assert (bb_vinfo);
+
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "SLPing BB\n");
+
+ for (si = gsi_start_bb (bb); !gsi_end_p (si); gsi_next (&si))
+ {
+ gimple stmt = gsi_stmt (si);
+ stmt_vec_info stmt_info;
+
+ if (vect_print_dump_info (REPORT_DETAILS))
+ {
+ fprintf (vect_dump, "------>SLPing statement: ");
+ print_gimple_stmt (vect_dump, stmt, 0, TDF_SLIM);
+ }
+
+ stmt_info = vinfo_for_stmt (stmt);
+ gcc_assert (stmt_info);
+
+ /* Schedule all the SLP instances when the first SLP stmt is reached. */
+ if (STMT_SLP_TYPE (stmt_info))
+ {
+ vect_schedule_slp (NULL, bb_vinfo);
+ break;
+ }
+ }
+
+ mark_sym_for_renaming (gimple_vop (cfun));
+ /* The memory tags and pointers in vectorized statements need to
+ have their SSA forms updated. FIXME, why can't this be delayed
+ until all the loops have been transformed? */
+ update_ssa (TODO_update_ssa);
+
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "BASIC BLOCK VECTORIZED\n");
+
+ destroy_bb_vec_info (bb_vinfo);
+}
+
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