#include "tree-scalar-evolution.h"
#include "tree-vectorizer.h"
#include "toplev.h"
+#include "recog.h"
/* Main analysis functions. */
static loop_vec_info vect_analyze_loop_form (struct loop *);
}
else
{
+ tree operation;
+
gcc_assert (! STMT_VINFO_DATA_REF (stmt_info)
&& !is_pattern_stmt_p (stmt_info));
- /* We set the vectype according to the type of the result (lhs).
+ /* We generally set the vectype according to the type of the
+ result (lhs).
For stmts whose result-type is different than the type of the
arguments (e.g. demotion, promotion), vectype will be reset
appropriately (later). Note that we have to visit the smallest
datatype in this function, because that determines the VF.
If the smallest datatype in the loop is present only as the
rhs of a promotion operation - we'd miss it here.
- However, in such a case, that a variable of this datatype
- does not appear in the lhs anywhere in the loop, it shouldn't
- affect the vectorization factor. */
+ Such a case, where a variable of this datatype does not appear
+ in the lhs anywhere in the loop, can only occur if it's an
+ invariant: e.g.: 'int_x = (int) short_inv', which we'd expect
+ to have been optimized away by invariant motion. However, we
+ cannot rely on invariant motion to always take invariants out
+ of the loop, and so in the case of promotion we also have to
+ check the rhs. */
scalar_type = TREE_TYPE (GIMPLE_STMT_OPERAND (stmt, 0));
+ operation = GIMPLE_STMT_OPERAND (stmt, 1);
+ if (TREE_CODE (operation) == NOP_EXPR
+ || TREE_CODE (operation) == CONVERT_EXPR
+ || TREE_CODE (operation) == WIDEN_MULT_EXPR
+ || TREE_CODE (operation) == FLOAT_EXPR)
+ {
+ tree rhs_type = TREE_TYPE (TREE_OPERAND (operation, 0));
+ if (TREE_INT_CST_LOW (TYPE_SIZE_UNIT (rhs_type)) <
+ TREE_INT_CST_LOW (TYPE_SIZE_UNIT (scalar_type)))
+ scalar_type = rhs_type;
+ }
+
if (vect_print_dump_info (REPORT_DETAILS))
{
fprintf (vect_dump, "get vectype for scalar type: ");
}
+/* 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. */
+
+static void
+vect_update_slp_costs_according_to_vf (loop_vec_info loop_vinfo)
+{
+ unsigned int i, vf = LOOP_VINFO_VECT_FACTOR (loop_vinfo);
+ 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_update_slp_costs_according_to_vf ===");
+
+ for (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); i++)
+ /* We assume that costs are linear in ncopies. */
+ SLP_INSTANCE_INSIDE_OF_LOOP_COST (instance) *= vf
+ / SLP_INSTANCE_UNROLLING_FACTOR (instance);
+}
+
+
/* Function vect_analyze_operations.
Scan the loop stmts and make sure they are all vectorizable. */
int min_profitable_iters;
int min_scalar_loop_bound;
unsigned int th;
+ bool only_slp_in_loop = true;
if (vect_print_dump_info (REPORT_DETAILS))
fprintf (vect_dump, "=== vect_analyze_operations ===");
need_to_vectorize = true;
}
- ok = (vectorizable_type_promotion (stmt, NULL, NULL)
+ ok = true;
+ if (STMT_VINFO_RELEVANT_P (stmt_info)
+ || STMT_VINFO_DEF_TYPE (stmt_info) == vect_reduction_def)
+ ok = (vectorizable_type_promotion (stmt, NULL, NULL)
|| vectorizable_type_demotion (stmt, NULL, NULL)
- || vectorizable_conversion (stmt, NULL, NULL)
- || vectorizable_operation (stmt, NULL, NULL)
- || vectorizable_assignment (stmt, NULL, NULL)
- || vectorizable_load (stmt, NULL, NULL)
+ || vectorizable_conversion (stmt, NULL, NULL, NULL)
+ || vectorizable_operation (stmt, NULL, NULL, NULL)
+ || vectorizable_assignment (stmt, NULL, NULL, NULL)
+ || vectorizable_load (stmt, NULL, NULL, NULL)
|| vectorizable_call (stmt, NULL, NULL)
- || vectorizable_store (stmt, NULL, NULL)
+ || vectorizable_store (stmt, NULL, NULL, NULL)
|| vectorizable_condition (stmt, NULL, NULL)
|| vectorizable_reduction (stmt, NULL, NULL));
+ if (!ok)
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
+ {
+ fprintf (vect_dump, "not vectorized: relevant stmt not ");
+ fprintf (vect_dump, "supported: ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+ return false;
+ }
+
/* Stmts that are (also) "live" (i.e. - that are used out of the loop)
need extra handling, except for vectorizable reductions. */
if (STMT_VINFO_LIVE_P (stmt_info)
&& STMT_VINFO_TYPE (stmt_info) != reduc_vec_info_type)
- ok |= vectorizable_live_operation (stmt, NULL, NULL);
+ ok = vectorizable_live_operation (stmt, NULL, NULL);
if (!ok)
{
if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
{
- fprintf (vect_dump, "not vectorized: stmt not supported: ");
+ fprintf (vect_dump, "not vectorized: live stmt not ");
+ fprintf (vect_dump, "supported: ");
print_generic_expr (vect_dump, stmt, TDF_SLIM);
}
return false;
}
+
+ if (!PURE_SLP_STMT (stmt_info))
+ {
+ /* STMT needs loop-based vectorization. */
+ only_slp_in_loop = false;
+
+ /* Groups of strided accesses whose size is not a power of 2 are
+ not vectorizable yet using loop-vectorization. Therefore, if
+ this stmt feeds non-SLP-able stmts (i.e., this stmt has to be
+ both SLPed and loop-based vectorzed), the loop cannot be
+ vectorized. */
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info)
+ && exact_log2 (DR_GROUP_SIZE (vinfo_for_stmt (
+ DR_GROUP_FIRST_DR (stmt_info)))) == -1)
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ {
+ fprintf (vect_dump, "not vectorized: the size of group "
+ "of strided accesses is not a power of 2");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+ return false;
+ }
+ }
} /* stmts in bb */
} /* bbs */
return false;
}
+ /* If all the stmts in the loop can be SLPed, we perform only SLP, and
+ vectorization factor of the loop is the unrolling factor required by the
+ SLP instances. If that unrolling factor is 1, we say, that we perform
+ pure SLP on loop - cross iteration parallelism is not exploited. */
+ if (only_slp_in_loop)
+ vectorization_factor = LOOP_VINFO_SLP_UNROLLING_FACTOR (loop_vinfo);
+ else
+ vectorization_factor = least_common_multiple (vectorization_factor,
+ LOOP_VINFO_SLP_UNROLLING_FACTOR (loop_vinfo));
+
+ LOOP_VINFO_VECT_FACTOR (loop_vinfo) = vectorization_factor;
+
if (LOOP_VINFO_NITERS_KNOWN_P (loop_vinfo)
&& vect_print_dump_info (REPORT_DETAILS))
fprintf (vect_dump,
/* Analyze cost. Decide if worth while to vectorize. */
+ /* Once VF is set, SLP costs should be updated since the number of created
+ vector stmts depends on VF. */
+ vect_update_slp_costs_according_to_vf (loop_vinfo);
+
min_profitable_iters = vect_estimate_min_profitable_iters (loop_vinfo);
LOOP_VINFO_COST_MODEL_MIN_ITERS (loop_vinfo) = min_profitable_iters;
if (min_profitable_iters < 0)
return false;
}
- min_scalar_loop_bound = (PARAM_VALUE (PARAM_MIN_VECT_LOOP_BOUND))
- * vectorization_factor;
+ min_scalar_loop_bound = ((PARAM_VALUE (PARAM_MIN_VECT_LOOP_BOUND)
+ * vectorization_factor) - 1);
/* Use the cost model only if it is more conservative than user specified
threshold. */
th = (unsigned) min_profitable_iters;
if (LOOP_VINFO_NITERS_KNOWN_P (loop_vinfo)
- && LOOP_VINFO_INT_NITERS (loop_vinfo) < th)
+ && LOOP_VINFO_INT_NITERS (loop_vinfo) <= th)
{
if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
fprintf (vect_dump, "not vectorized: vectorization not "
}
}
+/* Check if data references pointed by DR_I and DR_J are same or
+ belong to same interleaving group. Return FALSE if drs are
+ different, otherwise return TRUE. */
+
+static bool
+vect_same_range_drs (data_reference_p dr_i, data_reference_p dr_j)
+{
+ tree stmt_i = DR_STMT (dr_i);
+ tree stmt_j = DR_STMT (dr_j);
+
+ if (operand_equal_p (DR_REF (dr_i), DR_REF (dr_j), 0)
+ || (DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_i))
+ && DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_j))
+ && (DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_i))
+ == DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt_j)))))
+ return true;
+ else
+ return false;
+}
+
+/* If address ranges represented by DDR_I and DDR_J are equal,
+ return TRUE, otherwise return FALSE. */
+
+static bool
+vect_vfa_range_equal (ddr_p ddr_i, ddr_p ddr_j)
+{
+ if ((vect_same_range_drs (DDR_A (ddr_i), DDR_A (ddr_j))
+ && vect_same_range_drs (DDR_B (ddr_i), DDR_B (ddr_j)))
+ || (vect_same_range_drs (DDR_A (ddr_i), DDR_B (ddr_j))
+ && vect_same_range_drs (DDR_B (ddr_i), DDR_A (ddr_j))))
+ return true;
+ else
+ return false;
+}
+
+/* Insert DDR into LOOP_VINFO list of ddrs that may alias and need to be
+ tested at run-time. Return TRUE if DDR was successfully inserted.
+ Return false if versioning is not supported. */
+
+static bool
+vect_mark_for_runtime_alias_test (ddr_p ddr, loop_vec_info loop_vinfo)
+{
+ struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
+
+ if ((unsigned) PARAM_VALUE (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS) == 0)
+ return false;
+
+ if (vect_print_dump_info (REPORT_DR_DETAILS))
+ {
+ fprintf (vect_dump, "mark for run-time aliasing test between ");
+ print_generic_expr (vect_dump, DR_REF (DDR_A (ddr)), TDF_SLIM);
+ fprintf (vect_dump, " and ");
+ print_generic_expr (vect_dump, DR_REF (DDR_B (ddr)), TDF_SLIM);
+ }
+
+ if (optimize_size)
+ {
+ if (vect_print_dump_info (REPORT_DR_DETAILS))
+ fprintf (vect_dump, "versioning not supported when optimizing for size.");
+ return false;
+ }
+
+ /* FORNOW: We don't support versioning with outer-loop vectorization. */
+ if (loop->inner)
+ {
+ if (vect_print_dump_info (REPORT_DR_DETAILS))
+ fprintf (vect_dump, "versioning not yet supported for outer-loops.");
+ return false;
+ }
+
+ VEC_safe_push (ddr_p, heap, LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo), ddr);
+ return true;
+}
/* Function vect_analyze_data_ref_dependence.
Return TRUE if there (might) exist a dependence between a memory-reference
- DRA and a memory-reference DRB. */
+ DRA and a memory-reference DRB. When versioning for alias may check a
+ dependence at run-time, return FALSE. */
static bool
vect_analyze_data_ref_dependence (struct data_dependence_relation *ddr,
fprintf (vect_dump, " and ");
print_generic_expr (vect_dump, DR_REF (drb), TDF_SLIM);
}
- return true;
+ /* Add to list of ddrs that need to be tested at run-time. */
+ return !vect_mark_for_runtime_alias_test (ddr, loop_vinfo);
}
if (DDR_NUM_DIST_VECTS (ddr) == 0)
fprintf (vect_dump, " and ");
print_generic_expr (vect_dump, DR_REF (drb), TDF_SLIM);
}
- return true;
+ /* Add to list of ddrs that need to be tested at run-time. */
+ return !vect_mark_for_runtime_alias_test (ddr, loop_vinfo);
}
loop_depth = index_in_loop_nest (loop->num, DDR_LOOP_NEST (ddr));
continue;
}
- if (abs (dist) >= vectorization_factor)
+ if (abs (dist) >= vectorization_factor
+ || (dist > 0 && DDR_REVERSED_P (ddr)))
{
- /* Dependence distance does not create dependence, as far as vectorization
- is concerned, in this case. */
+ /* Dependence distance does not create dependence, as far as
+ vectorization is concerned, in this case. If DDR_REVERSED_P the
+ order of the data-refs in DDR was reversed (to make distance
+ vector positive), and the actual distance is negative. */
if (vect_print_dump_info (REPORT_DR_DETAILS))
- fprintf (vect_dump, "dependence distance >= VF.");
+ fprintf (vect_dump, "dependence distance >= VF or negative.");
continue;
}
- if (vect_print_dump_info (REPORT_DR_DETAILS))
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
{
fprintf (vect_dump,
- "versioning for alias required: possible dependence "
+ "not vectorized, possible dependence "
"between data-refs ");
print_generic_expr (vect_dump, DR_REF (dra), TDF_SLIM);
fprintf (vect_dump, " and ");
return false;
}
-/* Return TRUE if DDR_NEW is already found in MAY_ALIAS_DDRS list. */
-
-static bool
-vect_is_duplicate_ddr (VEC (ddr_p, heap) * may_alias_ddrs, ddr_p ddr_new)
-{
- unsigned i;
- ddr_p ddr;
-
- for (i = 0; VEC_iterate (ddr_p, may_alias_ddrs, i, ddr); i++)
- {
- tree dref_A_i, dref_B_i, dref_A_j, dref_B_j;
-
- dref_A_i = DR_REF (DDR_A (ddr));
- dref_B_i = DR_REF (DDR_B (ddr));
- dref_A_j = DR_REF (DDR_A (ddr_new));
- dref_B_j = DR_REF (DDR_B (ddr_new));
-
- if ((operand_equal_p (dref_A_i, dref_A_j, 0)
- && operand_equal_p (dref_B_i, dref_B_j, 0))
- || (operand_equal_p (dref_A_i, dref_B_j, 0)
- && operand_equal_p (dref_B_i, dref_A_j, 0)))
- {
- if (vect_print_dump_info (REPORT_DR_DETAILS))
- {
- fprintf (vect_dump, "found same pair of data references ");
- print_generic_expr (vect_dump, dref_A_i, TDF_SLIM);
- fprintf (vect_dump, " and ");
- print_generic_expr (vect_dump, dref_B_i, TDF_SLIM);
- }
- return true;
- }
- }
- return false;
-}
-
-/* Save DDR in LOOP_VINFO list of ddrs that may alias and need to be
- tested at run-time. Returns false if number of run-time checks
- inserted by vectorizer is greater than maximum defined by
- PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS. */
-static bool
-vect_mark_for_runtime_alias_test (ddr_p ddr, loop_vec_info loop_vinfo)
-{
- struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
-
- if (vect_print_dump_info (REPORT_DR_DETAILS))
- {
- fprintf (vect_dump, "mark for run-time aliasing test between ");
- print_generic_expr (vect_dump, DR_REF (DDR_A (ddr)), TDF_SLIM);
- fprintf (vect_dump, " and ");
- print_generic_expr (vect_dump, DR_REF (DDR_B (ddr)), TDF_SLIM);
- }
-
- /* FORNOW: We don't support versioning with outer-loop vectorization. */
- if (loop->inner)
- {
- if (vect_print_dump_info (REPORT_DR_DETAILS))
- fprintf (vect_dump, "versioning not yet supported for outer-loops.");
- return false;
- }
-
- /* Do not add to the list duplicate ddrs. */
- if (vect_is_duplicate_ddr (LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo), ddr))
- return true;
-
- if (VEC_length (ddr_p, LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo))
- >= (unsigned) PARAM_VALUE (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS))
- {
- if (vect_print_dump_info (REPORT_DR_DETAILS))
- {
- fprintf (vect_dump,
- "disable versioning for alias - max number of generated "
- "checks exceeded.");
- }
-
- VEC_truncate (ddr_p, LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo), 0);
-
- return false;
- }
- VEC_safe_push (ddr_p, heap, LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo), ddr);
- return true;
-}
-
/* Function vect_analyze_data_ref_dependences.
Examine all the data references in the loop, and make sure there do not
for (i = 0; VEC_iterate (ddr_p, ddrs, i, ddr); i++)
if (vect_analyze_data_ref_dependence (ddr, loop_vinfo))
- {
- /* Add to list of ddrs that need to be tested at run-time. */
- if (!vect_mark_for_runtime_alias_test (ddr, loop_vinfo))
return false;
- }
return true;
}
{
tree stmt = DR_STMT (dr);
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
+ loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
+ struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
tree ref = DR_REF (dr);
tree vectype;
tree base, base_addr;
misalign = DR_INIT (dr);
aligned_to = DR_ALIGNED_TO (dr);
base_addr = DR_BASE_ADDRESS (dr);
+
+ /* In case the dataref is in an inner-loop of the loop that is being
+ vectorized (LOOP), we use the base and misalignment information
+ relative to the outer-loop (LOOP). This is ok only if the misalignment
+ stays the same throughout the execution of the inner-loop, which is why
+ we have to check that the stride of the dataref in the inner-loop evenly
+ divides by the vector size. */
+ if (nested_in_vect_loop_p (loop, stmt))
+ {
+ tree step = DR_STEP (dr);
+ HOST_WIDE_INT dr_step = TREE_INT_CST_LOW (step);
+
+ if (dr_step % UNITS_PER_SIMD_WORD == 0)
+ {
+ if (vect_print_dump_info (REPORT_ALIGNMENT))
+ fprintf (vect_dump, "inner step divides the vector-size.");
+ misalign = STMT_VINFO_DR_INIT (stmt_info);
+ aligned_to = STMT_VINFO_DR_ALIGNED_TO (stmt_info);
+ base_addr = STMT_VINFO_DR_BASE_ADDRESS (stmt_info);
+ }
+ else
+ {
+ if (vect_print_dump_info (REPORT_ALIGNMENT))
+ fprintf (vect_dump, "inner step doesn't divide the vector-size.");
+ misalign = NULL_TREE;
+ }
+ }
+
base = build_fold_indirect_ref (base_addr);
vectype = STMT_VINFO_VECTYPE (stmt_info);
alignment = ssize_int (TYPE_ALIGN (vectype)/BITS_PER_UNIT);
- if (tree_int_cst_compare (aligned_to, alignment) < 0)
+ if ((aligned_to && tree_int_cst_compare (aligned_to, alignment) < 0)
+ || !misalign)
{
- if (vect_print_dump_info (REPORT_DETAILS))
+ if (vect_print_dump_info (REPORT_ALIGNMENT))
{
fprintf (vect_dump, "Unknown alignment for access: ");
print_generic_expr (vect_dump, base, TDF_SLIM);
/* For interleaved data accesses the step in the loop must be multiplied by
the size of the interleaving group. */
- if (DR_GROUP_FIRST_DR (stmt_info))
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info))
dr_size *= DR_GROUP_SIZE (vinfo_for_stmt (DR_GROUP_FIRST_DR (stmt_info)));
- if (DR_GROUP_FIRST_DR (peel_stmt_info))
+ if (STMT_VINFO_STRIDED_ACCESS (peel_stmt_info))
dr_peel_size *= DR_GROUP_SIZE (peel_stmt_info);
/* It can be assumed that the data refs with the same alignment as dr_peel
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
/* For interleaving, only the alignment of the first access matters. */
- if (DR_GROUP_FIRST_DR (stmt_info)
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info)
&& DR_GROUP_FIRST_DR (stmt_info) != stmt)
continue;
stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
tree vectype = STMT_VINFO_VECTYPE (stmt_info);
- if (DR_GROUP_FIRST_DR (stmt_info))
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info))
{
/* For interleaved access we peel only if number of iterations in
the prolog loop ({VF - misalignment}), is a multiple of the
/* For interleaving, only the alignment of the first access
matters. */
- if (DR_GROUP_FIRST_DR (stmt_info)
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info)
&& DR_GROUP_FIRST_DR (stmt_info) != stmt)
continue;
members of the group, therefore we divide the number of iterations
by the group size. */
stmt_info = vinfo_for_stmt (DR_STMT (dr0));
- if (DR_GROUP_FIRST_DR (stmt_info))
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info))
npeel /= DR_GROUP_SIZE (stmt_info);
if (vect_print_dump_info (REPORT_DETAILS))
stmt_info = vinfo_for_stmt (stmt);
/* For interleaving, only the alignment of the first access
matters. */
- if (DR_GROUP_FIRST_DR (stmt_info)
+ if (STMT_VINFO_STRIDED_ACCESS (stmt_info)
&& DR_GROUP_FIRST_DR (stmt_info) != stmt)
continue;
/* For interleaving, only the alignment of the first access
matters. */
if (aligned_access_p (dr)
- || (DR_GROUP_FIRST_DR (stmt_info)
+ || (STMT_VINFO_STRIDED_ACCESS (stmt_info)
&& DR_GROUP_FIRST_DR (stmt_info) != stmt))
continue;
}
-/* Function vect_analyze_data_ref_access.
-
- Analyze the access pattern of the data-reference DR. For now, a data access
- has to be consecutive to be considered vectorizable. */
+/* Analyze groups of strided accesses: check that DR belongs to a group of
+ strided accesses of legal size, step, etc. Detect gaps, single element
+ interleaving, and other special cases. Set strided access info.
+ Collect groups of strided stores for further use in SLP analysis. */
static bool
-vect_analyze_data_ref_access (struct data_reference *dr)
+vect_analyze_group_access (struct data_reference *dr)
{
tree step = DR_STEP (dr);
- HOST_WIDE_INT dr_step = TREE_INT_CST_LOW (step);
tree scalar_type = TREE_TYPE (DR_REF (dr));
HOST_WIDE_INT type_size = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (scalar_type));
tree stmt = DR_STMT (dr);
+ stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
+ loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
+ HOST_WIDE_INT dr_step = TREE_INT_CST_LOW (step);
+ HOST_WIDE_INT stride;
+ bool slp_impossible = false;
+
/* For interleaving, STRIDE is STEP counted in elements, i.e., the size of the
interleaving group (including gaps). */
- HOST_WIDE_INT stride = dr_step / type_size;
-
- if (!step)
- {
- if (vect_print_dump_info (REPORT_DETAILS))
- fprintf (vect_dump, "bad data-ref access");
- return false;
- }
-
- /* Consecutive? */
- if (!tree_int_cst_compare (step, TYPE_SIZE_UNIT (scalar_type)))
- {
- /* Mark that it is not interleaving. */
- DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)) = NULL_TREE;
- return true;
- }
+ stride = dr_step / type_size;
/* Not consecutive access is possible only if it is a part of interleaving. */
if (!DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)))
HOST_WIDE_INT diff, count_in_bytes;
while (next)
- {
- /* Skip same data-refs. In case that two or more stmts share data-ref
- (supported only for loads), we vectorize only the first stmt, and
- the rest get their vectorized loads from the first one. */
- if (!tree_int_cst_compare (DR_INIT (data_ref),
- DR_INIT (STMT_VINFO_DATA_REF (
- vinfo_for_stmt (next)))))
- {
+ {
+ /* Skip same data-refs. In case that two or more stmts share data-ref
+ (supported only for loads), we vectorize only the first stmt, and
+ the rest get their vectorized loads from the first one. */
+ if (!tree_int_cst_compare (DR_INIT (data_ref),
+ DR_INIT (STMT_VINFO_DATA_REF (
+ vinfo_for_stmt (next)))))
+ {
if (!DR_IS_READ (data_ref))
- {
+ {
if (vect_print_dump_info (REPORT_DETAILS))
fprintf (vect_dump, "Two store stmts share the same dr.");
- return false;
+ return false;
}
- /* Check that there is no load-store dependencies for this loads
+ /* Check that there is no load-store dependencies for this loads
to prevent a case of load-store-load to the same location. */
if (DR_GROUP_READ_WRITE_DEPENDENCE (vinfo_for_stmt (next))
|| DR_GROUP_READ_WRITE_DEPENDENCE (vinfo_for_stmt (prev)))
{
if (vect_print_dump_info (REPORT_DETAILS))
- fprintf (vect_dump,
+ fprintf (vect_dump,
"READ_WRITE dependence in interleaving.");
return false;
}
- /* For load use the same data-ref load. */
- DR_GROUP_SAME_DR_STMT (vinfo_for_stmt (next)) = prev;
+ /* For load use the same data-ref load. */
+ DR_GROUP_SAME_DR_STMT (vinfo_for_stmt (next)) = prev;
- prev = next;
- next = DR_GROUP_NEXT_DR (vinfo_for_stmt (next));
- continue;
- }
- prev = next;
+ prev = next;
+ next = DR_GROUP_NEXT_DR (vinfo_for_stmt (next));
+ continue;
+ }
+ prev = next;
- /* Check that all the accesses have the same STEP. */
- next_step = DR_STEP (STMT_VINFO_DATA_REF (vinfo_for_stmt (next)));
- if (tree_int_cst_compare (step, next_step))
- {
- if (vect_print_dump_info (REPORT_DETAILS))
- fprintf (vect_dump, "not consecutive access in interleaving");
- return false;
- }
+ /* Check that all the accesses have the same STEP. */
+ next_step = DR_STEP (STMT_VINFO_DATA_REF (vinfo_for_stmt (next)));
+ if (tree_int_cst_compare (step, next_step))
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "not consecutive access in interleaving");
+ return false;
+ }
- data_ref = STMT_VINFO_DATA_REF (vinfo_for_stmt (next));
- /* Check that the distance between two accesses is equal to the type
- size. Otherwise, we have gaps. */
- diff = (TREE_INT_CST_LOW (DR_INIT (data_ref))
- - TREE_INT_CST_LOW (prev_init)) / type_size;
- if (!DR_IS_READ (data_ref) && diff != 1)
+ data_ref = STMT_VINFO_DATA_REF (vinfo_for_stmt (next));
+ /* Check that the distance between two accesses is equal to the type
+ size. Otherwise, we have gaps. */
+ diff = (TREE_INT_CST_LOW (DR_INIT (data_ref))
+ - TREE_INT_CST_LOW (prev_init)) / type_size;
+ if (diff != 1)
{
- if (vect_print_dump_info (REPORT_DETAILS))
- fprintf (vect_dump, "interleaved store with gaps");
- return false;
+ /* FORNOW: SLP of accesses with gaps is not supported. */
+ slp_impossible = true;
+ if (!DR_IS_READ (data_ref))
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "interleaved store with gaps");
+ return false;
+ }
}
- /* Store the gap from the previous member of the group. If there is no
+
+ /* Store the gap from the previous member of the group. If there is no
gap in the access, DR_GROUP_GAP is always 1. */
- DR_GROUP_GAP (vinfo_for_stmt (next)) = diff;
+ DR_GROUP_GAP (vinfo_for_stmt (next)) = diff;
- prev_init = DR_INIT (data_ref);
- next = DR_GROUP_NEXT_DR (vinfo_for_stmt (next));
- /* Count the number of data-refs in the chain. */
- count++;
- }
+ prev_init = DR_INIT (data_ref);
+ next = DR_GROUP_NEXT_DR (vinfo_for_stmt (next));
+ /* Count the number of data-refs in the chain. */
+ count++;
+ }
- /* COUNT is the number of accesses found, we multiply it by the size of
- the type to get COUNT_IN_BYTES. */
+ /* COUNT is the number of accesses found, we multiply it by the size of
+ the type to get COUNT_IN_BYTES. */
count_in_bytes = type_size * count;
/* Check that the size of the interleaving is not greater than STEP. */
- if (dr_step < count_in_bytes)
- {
- if (vect_print_dump_info (REPORT_DETAILS))
- {
- fprintf (vect_dump, "interleaving size is greater than step for ");
- print_generic_expr (vect_dump, DR_REF (dr), TDF_SLIM);
- }
- return false;
- }
+ if (dr_step < count_in_bytes)
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ {
+ fprintf (vect_dump, "interleaving size is greater than step for ");
+ print_generic_expr (vect_dump, DR_REF (dr), TDF_SLIM);
+ }
+ return false;
+ }
- /* Check that the size of the interleaving is equal to STEP for stores,
- i.e., that there are no gaps. */
- if (!DR_IS_READ (dr) && dr_step != count_in_bytes)
- {
- if (vect_print_dump_info (REPORT_DETAILS))
- fprintf (vect_dump, "interleaved store with gaps");
- return false;
- }
+ /* Check that the size of the interleaving is equal to STEP for stores,
+ i.e., that there are no gaps. */
+ if (!DR_IS_READ (dr) && dr_step != count_in_bytes)
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "interleaved store with gaps");
+ return false;
+ }
/* Check that STEP is a multiple of type size. */
if ((dr_step % type_size) != 0)
- {
- if (vect_print_dump_info (REPORT_DETAILS))
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
{
fprintf (vect_dump, "step is not a multiple of type size: step ");
print_generic_expr (vect_dump, step, TDF_SLIM);
print_generic_expr (vect_dump, TYPE_SIZE_UNIT (scalar_type),
TDF_SLIM);
}
- return false;
- }
+ return false;
+ }
- /* FORNOW: we handle only interleaving that is a power of 2. */
+ /* FORNOW: we handle only interleaving that is a power of 2.
+ We don't fail here if it may be still possible to vectorize the
+ group using SLP. If not, the size of the group will be checked in
+ vect_analyze_operations, and the vectorization will fail. */
if (exact_log2 (stride) == -1)
{
if (vect_print_dump_info (REPORT_DETAILS))
fprintf (vect_dump, "interleaving is not a power of 2");
- return false;
+
+ if (slp_impossible)
+ return false;
}
DR_GROUP_SIZE (vinfo_for_stmt (stmt)) = stride;
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "Detected interleaving of size %d", (int)stride);
+
+ /* SLP: create an SLP data structure for every interleaving group of
+ stores for further analysis in vect_analyse_slp. */
+ if (!DR_IS_READ (dr) && !slp_impossible)
+ VEC_safe_push (tree, heap, LOOP_VINFO_STRIDED_STORES (loop_vinfo), stmt);
}
+
return true;
}
-/* Function vect_analyze_data_ref_accesses.
-
- Analyze the access pattern of all the data references in the loop.
-
- FORNOW: the only access pattern that is considered vectorizable is a
- simple step 1 (consecutive) access.
-
- FORNOW: handle only arrays and pointer accesses. */
+/* Analyze the access pattern of the data-reference DR.
+ In case of non-consecutive accesses call vect_analyze_group_access() to
+ analyze groups of strided accesses. */
static bool
-vect_analyze_data_ref_accesses (loop_vec_info loop_vinfo)
+vect_analyze_data_ref_access (struct data_reference *dr)
{
- unsigned int i;
- VEC (data_reference_p, heap) *datarefs = LOOP_VINFO_DATAREFS (loop_vinfo);
- struct data_reference *dr;
-
- if (vect_print_dump_info (REPORT_DETAILS))
- fprintf (vect_dump, "=== vect_analyze_data_ref_accesses ===");
-
- for (i = 0; VEC_iterate (data_reference_p, datarefs, i, dr); i++)
+ tree step = DR_STEP (dr);
+ tree scalar_type = TREE_TYPE (DR_REF (dr));
+ tree stmt = DR_STMT (dr);
+ stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
+ loop_vec_info loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_info);
+ struct loop *loop = LOOP_VINFO_LOOP (loop_vinfo);
+ HOST_WIDE_INT dr_step = TREE_INT_CST_LOW (step);
+
+ if (!step)
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "bad data-ref access");
+ return false;
+ }
+
+ /* Don't allow invariant accesses. */
+ if (dr_step == 0)
+ return false;
+
+ if (nested_in_vect_loop_p (loop, stmt))
+ {
+ /* Interleaved accesses are not yet supported within outer-loop
+ vectorization for references in the inner-loop. */
+ DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)) = NULL_TREE;
+
+ /* For the rest of the analysis we use the outer-loop step. */
+ step = STMT_VINFO_DR_STEP (stmt_info);
+ dr_step = TREE_INT_CST_LOW (step);
+
+ if (dr_step == 0)
+ {
+ if (vect_print_dump_info (REPORT_ALIGNMENT))
+ fprintf (vect_dump, "zero step in outer loop.");
+ if (DR_IS_READ (dr))
+ return true;
+ else
+ return false;
+ }
+ }
+
+ /* Consecutive? */
+ if (!tree_int_cst_compare (step, TYPE_SIZE_UNIT (scalar_type)))
+ {
+ /* Mark that it is not interleaving. */
+ DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)) = NULL_TREE;
+ return true;
+ }
+
+ if (nested_in_vect_loop_p (loop, stmt))
+ {
+ if (vect_print_dump_info (REPORT_ALIGNMENT))
+ fprintf (vect_dump, "strided access in outer loop.");
+ return false;
+ }
+
+ /* Not consecutive access - check if it's a part of interleaving group. */
+ return vect_analyze_group_access (dr);
+}
+
+
+/* Function vect_analyze_data_ref_accesses.
+
+ Analyze the access pattern of all the data references in the loop.
+
+ FORNOW: the only access pattern that is considered vectorizable is a
+ simple step 1 (consecutive) access.
+
+ FORNOW: handle only arrays and pointer accesses. */
+
+static bool
+vect_analyze_data_ref_accesses (loop_vec_info loop_vinfo)
+{
+ unsigned int i;
+ VEC (data_reference_p, heap) *datarefs = LOOP_VINFO_DATAREFS (loop_vinfo);
+ struct data_reference *dr;
+
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "=== vect_analyze_data_ref_accesses ===");
+
+ for (i = 0; VEC_iterate (data_reference_p, datarefs, i, dr); i++)
if (!vect_analyze_data_ref_access (dr))
{
if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
return true;
}
+/* Function vect_prune_runtime_alias_test_list.
+
+ Prune a list of ddrs to be tested at run-time by versioning for alias.
+ Return FALSE if resulting list of ddrs is longer then allowed by
+ PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS, otherwise return TRUE. */
+
+static bool
+vect_prune_runtime_alias_test_list (loop_vec_info loop_vinfo)
+{
+ VEC (ddr_p, heap) * ddrs =
+ LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo);
+ unsigned i, j;
+
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "=== vect_prune_runtime_alias_test_list ===");
+
+ for (i = 0; i < VEC_length (ddr_p, ddrs); )
+ {
+ bool found;
+ ddr_p ddr_i;
+
+ ddr_i = VEC_index (ddr_p, ddrs, i);
+ found = false;
+
+ for (j = 0; j < i; j++)
+ {
+ ddr_p ddr_j = VEC_index (ddr_p, ddrs, j);
+
+ if (vect_vfa_range_equal (ddr_i, ddr_j))
+ {
+ if (vect_print_dump_info (REPORT_DR_DETAILS))
+ {
+ fprintf (vect_dump, "found equal ranges ");
+ print_generic_expr (vect_dump, DR_REF (DDR_A (ddr_i)), TDF_SLIM);
+ fprintf (vect_dump, ", ");
+ print_generic_expr (vect_dump, DR_REF (DDR_B (ddr_i)), TDF_SLIM);
+ fprintf (vect_dump, " and ");
+ print_generic_expr (vect_dump, DR_REF (DDR_A (ddr_j)), TDF_SLIM);
+ fprintf (vect_dump, ", ");
+ print_generic_expr (vect_dump, DR_REF (DDR_B (ddr_j)), TDF_SLIM);
+ }
+ found = true;
+ break;
+ }
+ }
+
+ if (found)
+ {
+ VEC_ordered_remove (ddr_p, ddrs, i);
+ continue;
+ }
+ i++;
+ }
+
+ if (VEC_length (ddr_p, ddrs) >
+ (unsigned) PARAM_VALUE (PARAM_VECT_MAX_VERSION_FOR_ALIAS_CHECKS))
+ {
+ if (vect_print_dump_info (REPORT_DR_DETAILS))
+ {
+ fprintf (vect_dump,
+ "disable versioning for alias - max number of generated "
+ "checks exceeded.");
+ }
+
+ VEC_truncate (ddr_p, LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo), 0);
+
+ return false;
+ }
+
+ return true;
+}
+
+/* Recursively free the memory allocated for the SLP tree rooted at NODE. */
+
+void
+vect_free_slp_tree (slp_tree node)
+{
+ 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));
+
+ VEC_free (tree, heap, SLP_TREE_SCALAR_STMTS (node));
+
+ if (SLP_TREE_VEC_STMTS (node))
+ VEC_free (tree, heap, SLP_TREE_VEC_STMTS (node));
+
+ free (node);
+}
+
+
+/* Get the defs for the RHS (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_...). */
+
+static bool
+vect_get_and_check_slp_defs (loop_vec_info loop_vinfo, slp_tree slp_node,
+ tree rhs, VEC (tree, heap) **def_stmts0,
+ VEC (tree, 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)
+{
+ tree oprnd;
+ enum operation_type op_type = TREE_OPERAND_LENGTH (rhs);
+ unsigned int i, number_of_oprnds = op_type;
+ tree def, 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 (tree, SLP_TREE_SCALAR_STMTS (slp_node), 0));
+
+ /* Store. */
+ if (!op_type)
+ number_of_oprnds = 1;
+ else
+ gcc_assert (op_type == unary_op || op_type == binary_op);
+
+ for (i = 0; i < number_of_oprnds; i++)
+ {
+ if (op_type)
+ oprnd = TREE_OPERAND (rhs, i);
+ else
+ oprnd = rhs;
+
+ if (!vect_is_simple_use (oprnd, loop_vinfo, &def_stmt, &def, &dt[i])
+ || (!def_stmt && dt[i] != vect_constant_def))
+ {
+ 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;
+ }
+
+ if (!*first_stmt_dt0)
+ {
+ /* op0 of the first stmt of the group - store its info. */
+ *first_stmt_dt0 = dt[i];
+ if (def)
+ *first_stmt_def0_type = TREE_TYPE (def);
+ else
+ *first_stmt_const_oprnd = oprnd;
+
+ /* Analyze costs (for the first stmt of the group only). */
+ if (op_type)
+ /* 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)
+ {
+ /* 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);
+ 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;
+ }
+ }
+ else
+ {
+ /* 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))
+ fprintf (vect_dump, "Build SLP failed: different types ");
+
+ return false;
+ }
+ }
+ }
+
+ /* Check the types of the definitions. */
+ switch (dt[i])
+ {
+ case vect_constant_def:
+ case vect_invariant_def:
+ break;
+
+ case vect_loop_def:
+ if (i == 0)
+ VEC_safe_push (tree, heap, *def_stmts0, def_stmt);
+ else
+ VEC_safe_push (tree, heap, *def_stmts1, def_stmt);
+ break;
+
+ default:
+ /* FORNOW: Not supported. */
+ 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);
+ }
+
+ return false;
+ }
+ }
+
+ return true;
+}
+
+
+/* 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
+ TRUE.
+ SLP_IMPOSSIBLE is TRUE if it is impossible to SLP in the loop, for example
+ in the case of multiple types for now. */
+
+static bool
+vect_build_slp_tree (loop_vec_info loop_vinfo, slp_tree *node,
+ unsigned int group_size, bool *slp_impossible,
+ int *inside_cost, int *outside_cost,
+ int ncopies_for_cost)
+{
+ VEC (tree, heap) *def_stmts0 = VEC_alloc (tree, heap, group_size);
+ VEC (tree, heap) *def_stmts1 = VEC_alloc (tree, heap, group_size);
+ unsigned int i;
+ VEC (tree, heap) *stmts = SLP_TREE_SCALAR_STMTS (*node);
+ tree stmt = VEC_index (tree, stmts, 0);
+ enum vect_def_type first_stmt_dt0 = 0, first_stmt_dt1 = 0;
+ enum tree_code first_stmt_code = 0;
+ tree first_stmt_def1_type = NULL_TREE, first_stmt_def0_type = NULL_TREE;
+ tree lhs, rhs, prev_stmt = NULL_TREE;
+ bool stop_recursion = false, need_same_oprnds = false;
+ tree vectype, scalar_type, first_op1 = NULL_TREE;
+ unsigned int vectorization_factor = 0, 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;
+
+ /* For every stmt in NODE find its def stmt/s. */
+ for (i = 0; VEC_iterate (tree, stmts, i, stmt); i++)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP for ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ if (TREE_CODE (stmt) != GIMPLE_MODIFY_STMT)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: not MODIFY_STMT ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ return false;
+ }
+
+ scalar_type = TREE_TYPE (GIMPLE_STMT_OPERAND (stmt, 0));
+ vectype = get_vectype_for_scalar_type (scalar_type);
+ 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;
+ }
+
+ 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)
+ {
+ /* FORNOW. */
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "SLP failed - multiple types ");
+
+ *slp_impossible = true;
+ return false;
+ }
+
+ lhs = GIMPLE_STMT_OPERAND (stmt, 0);
+ rhs = GIMPLE_STMT_OPERAND (stmt, 1);
+
+ /* Check the operation. */
+ if (i == 0)
+ {
+ first_stmt_code = TREE_CODE (rhs);
+
+ /* Shift arguments should be equal in all the packed stmts for a
+ vector shift with scalar shift operand. */
+ if (TREE_CODE (rhs) == LSHIFT_EXPR || TREE_CODE (rhs) == RSHIFT_EXPR)
+ {
+ vec_mode = TYPE_MODE (vectype);
+ optab = optab_for_tree_code (TREE_CODE (rhs), vectype);
+ if (!optab)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "Build SLP failed: no optab.");
+ return false;
+ }
+ icode = (int) optab->handlers[(int) vec_mode].insn_code;
+ if (icode == CODE_FOR_nothing)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump,
+ "Build SLP failed: op not supported by target.");
+ return false;
+ }
+ optab_op2_mode = insn_data[icode].operand[2].mode;
+ if (!VECTOR_MODE_P (optab_op2_mode))
+ {
+ need_same_oprnds = true;
+ first_op1 = TREE_OPERAND (rhs, 1);
+ }
+ }
+ }
+ else
+ {
+ if (first_stmt_code != TREE_CODE (rhs))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump,
+ "Build SLP failed: different operation in stmt ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ return false;
+ }
+
+ if (need_same_oprnds
+ && !operand_equal_p (first_op1, TREE_OPERAND (rhs, 1), 0))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump,
+ "Build SLP failed: different shift arguments in ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ return false;
+ }
+ }
+
+ /* Strided store or load. */
+ if (STMT_VINFO_STRIDED_ACCESS (vinfo_for_stmt (stmt)))
+ {
+ if (REFERENCE_CLASS_P (lhs))
+ {
+ /* Store. */
+ if (!vect_get_and_check_slp_defs (loop_vinfo, *node, rhs,
+ &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))
+ return false;
+ }
+ else
+ {
+ /* Load. */
+ if (i == 0)
+ {
+ /* First stmt of the SLP group should be the first load of
+ the interleaving loop if data permutation is not
+ allowed. */
+ if (DR_GROUP_FIRST_DR (vinfo_for_stmt (stmt)) != stmt)
+ {
+ /* FORNOW: data permutations are not supported. */
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: strided "
+ " loads need permutation ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ return false;
+ }
+
+ first_dr = STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt));
+ if (vect_supportable_dr_alignment (first_dr)
+ == dr_unaligned_unsupported)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: unsupported "
+ " unaligned load ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ return false;
+ }
+
+ /* Analyze costs (for the first stmt in the group). */
+ vect_model_load_cost (vinfo_for_stmt (stmt),
+ ncopies_for_cost, *node);
+ }
+ else
+ {
+ if (DR_GROUP_NEXT_DR (vinfo_for_stmt (prev_stmt)) != stmt)
+ {
+ /* FORNOW: data permutations are not supported. */
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: strided "
+ " loads need permutation ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+ return false;
+ }
+ }
+
+ prev_stmt = stmt;
+
+ /* We stop the tree when we reach a group of loads. */
+ stop_recursion = true;
+ continue;
+ }
+ } /* Strided access. */
+ else
+ {
+ if (REFERENCE_CLASS_P (rhs))
+ {
+ /* Not strided load. */
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: not strided load ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ /* FORNOW: Not strided loads are not supported. */
+ return false;
+ }
+
+ /* Not memory operation. */
+ if (!BINARY_CLASS_P (rhs) && !UNARY_CLASS_P (rhs))
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ {
+ fprintf (vect_dump, "Build SLP failed: operation");
+ fprintf (vect_dump, " unsupported ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+
+ return false;
+ }
+
+ /* Find the def-stmts. */
+ if (!vect_get_and_check_slp_defs (loop_vinfo, *node, rhs, &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))
+ return false;
+ }
+ }
+
+ /* Add the costs of the node to the overall instance costs. */
+ *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)
+ 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,
+ slp_impossible, inside_cost, outside_cost,
+ ncopies_for_cost))
+ 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,
+ slp_impossible, inside_cost, outside_cost,
+ ncopies_for_cost))
+ return false;
+
+ SLP_TREE_RIGHT (*node) = right_node;
+ }
+
+ return true;
+}
+
+
+static void
+vect_print_slp_tree (slp_tree node)
+{
+ int i;
+ tree stmt;
+
+ if (!node)
+ return;
+
+ fprintf (vect_dump, "node ");
+ for (i = 0; VEC_iterate (tree, SLP_TREE_SCALAR_STMTS (node), i, stmt); i++)
+ {
+ fprintf (vect_dump, "\n\tstmt %d ", i);
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+ fprintf (vect_dump, "\n");
+
+ vect_print_slp_tree (SLP_TREE_LEFT (node));
+ vect_print_slp_tree (SLP_TREE_RIGHT (node));
+}
+
+
+/* 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
+vect_mark_slp_stmts (slp_tree node, enum slp_vect_type mark, int j)
+{
+ int i;
+ tree stmt;
+
+ if (!node)
+ return;
+
+ for (i = 0; VEC_iterate (tree, SLP_TREE_SCALAR_STMTS (node), i, stmt); i++)
+ 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);
+}
+
+
+/* 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, tree stmt)
+{
+ slp_instance new_instance;
+ slp_tree node = XNEW (struct _slp_tree);
+ unsigned int group_size = DR_GROUP_SIZE (vinfo_for_stmt (stmt));
+ unsigned int unrolling_factor = 1, nunits;
+ tree vectype, scalar_type, next;
+ unsigned int vectorization_factor = 0, ncopies;
+ bool slp_impossible = false;
+ int inside_cost = 0, outside_cost = 0, ncopies_for_cost;
+
+ /* FORNOW: multiple types are not supported. */
+ scalar_type = TREE_TYPE (DR_REF (STMT_VINFO_DATA_REF (vinfo_for_stmt (stmt))));
+ vectype = get_vectype_for_scalar_type (scalar_type);
+ 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 (ncopies > 1)
+ {
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "SLP failed - multiple types ");
+
+ return false;
+ }
+
+ /* Create a node (a root of the SLP tree) for the packed strided stores. */
+ SLP_TREE_SCALAR_STMTS (node) = VEC_alloc (tree, heap, group_size);
+ next = stmt;
+ /* Collect the stores and store them in SLP_TREE_SCALAR_STMTS. */
+ while (next)
+ {
+ VEC_safe_push (tree, heap, SLP_TREE_SCALAR_STMTS (node), next);
+ next = DR_GROUP_NEXT_DR (vinfo_for_stmt (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;
+
+ /* 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;
+
+ /* Build the tree for the SLP instance. */
+ if (vect_build_slp_tree (loop_vinfo, &node, group_size, &slp_impossible,
+ &inside_cost, &outside_cost, ncopies_for_cost))
+ {
+ /* 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;
+ 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);
+
+ return true;
+ }
+
+ /* Failed to SLP. */
+ /* Free the allocated memory. */
+ vect_free_slp_tree (node);
+
+ if (slp_impossible)
+ return false;
+
+ /* SLP failed for this instance, but it is still possible to SLP other stmts
+ in the loop. */
+ return true;
+}
+
+
+/* Check if there are stmts in the loop can be vectorized using SLP. Build SLP
+ trees of packed scalar stmts if SLP is possible. */
+
+static bool
+vect_analyze_slp (loop_vec_info loop_vinfo)
+{
+ unsigned int i;
+ VEC (tree, heap) *strided_stores = LOOP_VINFO_STRIDED_STORES (loop_vinfo);
+ tree store;
+
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "=== vect_analyze_slp ===");
+
+ for (i = 0; VEC_iterate (tree, 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.");
+
+ return false;
+ }
+
+ return true;
+}
+
+
+/* For each possible SLP instance decide whether to SLP it and calculate overall
+ unrolling factor needed to SLP the loop. */
+
+static 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;
+
+ if (vect_print_dump_info (REPORT_SLP))
+ fprintf (vect_dump, "=== vect_make_slp_decision ===");
+
+ for (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); i++)
+ {
+ /* 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);
+}
+
+
+/* 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;
+ tree stmt;
+ imm_use_iterator imm_iter;
+ tree use_stmt;
+
+ if (!node)
+ return;
+
+ for (i = 0; VEC_iterate (tree, SLP_TREE_SCALAR_STMTS (node), i, stmt); i++)
+ if (PURE_SLP_STMT (vinfo_for_stmt (stmt))
+ && TREE_CODE (GIMPLE_STMT_OPERAND (stmt, 0)) == SSA_NAME)
+ FOR_EACH_IMM_USE_STMT (use_stmt, imm_iter, GIMPLE_STMT_OPERAND (stmt, 0))
+ if (vinfo_for_stmt (use_stmt)
+ && !STMT_SLP_TYPE (vinfo_for_stmt (use_stmt)))
+ vect_mark_slp_stmts (node, hybrid, i);
+
+ vect_detect_hybrid_slp_stmts (SLP_TREE_LEFT (node));
+ vect_detect_hybrid_slp_stmts (SLP_TREE_RIGHT (node));
+}
+
+
+/* Find stmts that must be both vectorized and SLPed. */
+
+static 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 (i = 0; VEC_iterate (slp_instance, slp_instances, i, instance); i++)
+ vect_detect_hybrid_slp_stmts (SLP_INSTANCE_TREE (instance));
+}
+
/* Function vect_analyze_data_refs.
tree stmt;
stmt_vec_info stmt_info;
basic_block bb;
+ tree base, offset, init;
if (!dr || !DR_REF (dr))
{
fprintf (vect_dump, "not vectorized: unhandled data-ref ");
return false;
}
-
- /* Update DR field in stmt_vec_info struct. */
+
stmt = DR_STMT (dr);
stmt_info = vinfo_for_stmt (stmt);
- /* If outer-loop vectorization: we don't yet support datarefs
- in the innermost loop. */
- bb = bb_for_stmt (stmt);
- if (bb->loop_father != LOOP_VINFO_LOOP (loop_vinfo))
- {
- if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
- fprintf (vect_dump, "not vectorized: data-ref in nested loop");
- return false;
- }
-
- if (STMT_VINFO_DATA_REF (stmt_info))
- {
- if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
- {
- fprintf (vect_dump,
- "not vectorized: more than one data ref in stmt: ");
- print_generic_expr (vect_dump, stmt, TDF_SLIM);
- }
- return false;
- }
- STMT_VINFO_DATA_REF (stmt_info) = dr;
-
/* Check that analysis of the data-ref succeeded. */
if (!DR_BASE_ADDRESS (dr) || !DR_OFFSET (dr) || !DR_INIT (dr)
- || !DR_STEP (dr))
+ || !DR_STEP (dr))
{
if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
{
}
return false;
}
-
+
+ base = unshare_expr (DR_BASE_ADDRESS (dr));
+ offset = unshare_expr (DR_OFFSET (dr));
+ init = unshare_expr (DR_INIT (dr));
+
+ /* Update DR field in stmt_vec_info struct. */
+ bb = bb_for_stmt (stmt);
+
+ /* If the dataref is in an inner-loop of the loop that is considered for
+ for vectorization, we also want to analyze the access relative to
+ the outer-loop (DR contains information only relative to the
+ inner-most enclosing loop). We do that by building a reference to the
+ first location accessed by the inner-loop, and analyze it relative to
+ the outer-loop. */
+ if (nested_in_vect_loop_p (loop, stmt))
+ {
+ tree outer_step, outer_base, outer_init;
+ HOST_WIDE_INT pbitsize, pbitpos;
+ tree poffset;
+ enum machine_mode pmode;
+ int punsignedp, pvolatilep;
+ affine_iv base_iv, offset_iv;
+ tree dinit;
+
+ /* Build a reference to the first location accessed by the
+ inner-loop: *(BASE+INIT). (The first location is actually
+ BASE+INIT+OFFSET, but we add OFFSET separately later. */
+ tree inner_base = build_fold_indirect_ref
+ (fold_build2 (PLUS_EXPR,
+ TREE_TYPE (base), base, init));
+
+ if (vect_print_dump_info (REPORT_DETAILS))
+ {
+ fprintf (dump_file, "analyze in outer-loop: ");
+ print_generic_expr (dump_file, inner_base, TDF_SLIM);
+ }
+
+ outer_base = get_inner_reference (inner_base, &pbitsize, &pbitpos,
+ &poffset, &pmode, &punsignedp, &pvolatilep, false);
+ gcc_assert (outer_base != NULL_TREE);
+
+ if (pbitpos % BITS_PER_UNIT != 0)
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (dump_file, "failed: bit offset alignment.\n");
+ return false;
+ }
+
+ outer_base = build_fold_addr_expr (outer_base);
+ if (!simple_iv (loop, stmt, outer_base, &base_iv, false))
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (dump_file, "failed: evolution of base is not affine.\n");
+ return false;
+ }
+
+ if (offset)
+ {
+ if (poffset)
+ poffset = fold_build2 (PLUS_EXPR, TREE_TYPE (offset), offset, poffset);
+ else
+ poffset = offset;
+ }
+
+ if (!poffset)
+ {
+ offset_iv.base = ssize_int (0);
+ offset_iv.step = ssize_int (0);
+ }
+ else if (!simple_iv (loop, stmt, poffset, &offset_iv, false))
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (dump_file, "evolution of offset is not affine.\n");
+ return false;
+ }
+
+ outer_init = ssize_int (pbitpos / BITS_PER_UNIT);
+ split_constant_offset (base_iv.base, &base_iv.base, &dinit);
+ outer_init = size_binop (PLUS_EXPR, outer_init, dinit);
+ split_constant_offset (offset_iv.base, &offset_iv.base, &dinit);
+ outer_init = size_binop (PLUS_EXPR, outer_init, dinit);
+
+ outer_step = size_binop (PLUS_EXPR,
+ fold_convert (ssizetype, base_iv.step),
+ fold_convert (ssizetype, offset_iv.step));
+
+ STMT_VINFO_DR_STEP (stmt_info) = outer_step;
+ /* FIXME: Use canonicalize_base_object_address (base_iv.base); */
+ STMT_VINFO_DR_BASE_ADDRESS (stmt_info) = base_iv.base;
+ STMT_VINFO_DR_INIT (stmt_info) = outer_init;
+ STMT_VINFO_DR_OFFSET (stmt_info) =
+ fold_convert (ssizetype, offset_iv.base);
+ STMT_VINFO_DR_ALIGNED_TO (stmt_info) =
+ size_int (highest_pow2_factor (offset_iv.base));
+
+ if (dump_file && (dump_flags & TDF_DETAILS))
+ {
+ fprintf (dump_file, "\touter base_address: ");
+ print_generic_expr (dump_file, STMT_VINFO_DR_BASE_ADDRESS (stmt_info), TDF_SLIM);
+ fprintf (dump_file, "\n\touter offset from base address: ");
+ print_generic_expr (dump_file, STMT_VINFO_DR_OFFSET (stmt_info), TDF_SLIM);
+ fprintf (dump_file, "\n\touter constant offset from base address: ");
+ print_generic_expr (dump_file, STMT_VINFO_DR_INIT (stmt_info), TDF_SLIM);
+ fprintf (dump_file, "\n\touter step: ");
+ print_generic_expr (dump_file, STMT_VINFO_DR_STEP (stmt_info), TDF_SLIM);
+ fprintf (dump_file, "\n\touter aligned to: ");
+ print_generic_expr (dump_file, STMT_VINFO_DR_ALIGNED_TO (stmt_info), TDF_SLIM);
+ }
+ }
+
+ if (STMT_VINFO_DATA_REF (stmt_info))
+ {
+ if (vect_print_dump_info (REPORT_UNVECTORIZED_LOOPS))
+ {
+ fprintf (vect_dump,
+ "not vectorized: more than one data ref in stmt: ");
+ print_generic_expr (vect_dump, stmt, TDF_SLIM);
+ }
+ return false;
+ }
+ STMT_VINFO_DATA_REF (stmt_info) = dr;
+
/* Set vectype for STMT. */
scalar_type = TREE_TYPE (DR_REF (dr));
STMT_VINFO_VECTYPE (stmt_info) =
return NULL;
}
+ /* Prune the list of ddrs to be tested at run-time by versioning for alias.
+ It is important to call pruning after vect_analyze_data_ref_accesses,
+ since we use grouping information gathered by interleaving analysis. */
+ ok = vect_prune_runtime_alias_test_list (loop_vinfo);
+ if (!ok)
+ {
+ if (vect_print_dump_info (REPORT_DETAILS))
+ fprintf (vect_dump, "too long list of versioning for alias "
+ "run-time tests.");
+ destroy_loop_vec_info (loop_vinfo, true);
+ return NULL;
+ }
+
+ /* Check the SLP opportunities in the loop, analyze and build SLP trees. */
+ ok = vect_analyze_slp (loop_vinfo);
+ if (ok)
+ {
+ /* Decide which possible SLP instances to SLP. */
+ vect_make_slp_decision (loop_vinfo);
+
+ /* Find stmts that need to be both vectorized and SLPed. */
+ vect_detect_hybrid_slp (loop_vinfo);
+ }
+
/* This pass will decide on using loop versioning and/or loop peeling in
order to enhance the alignment of data references in the loop. */
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