}
-/* Dump predicate PREDICATE. */
+/* Dump PREDICATE to F. CONDS a vector of conditions used when evauating
+ predicats. When NL is true new line is output at the end of dump. */
static void
-dump_predicate (FILE *f, conditions conds, struct predicate *pred)
+dump_predicate (FILE *f, conditions conds, struct predicate *pred,
+ bool nl = true)
{
int i;
if (true_predicate_p (pred))
fprintf (f, " && ");
dump_clause (f, conds, pred->clause[i]);
}
- fprintf (f, "\n");
+ if (nl)
+ fprintf (f, "\n");
}
}
-/* Record SIZE and TIME under condition PRED into the inline summary. */
+/* Record SIZE and TIME to SUMMARY.
+ The accounted code will be executed when EXEC_PRED is true.
+ When NONCONST_PRED is false the code will evaulate to constant and
+ will get optimized out in specialized clones of the function. */
static void
account_size_time (struct inline_summary *summary, int size, sreal time,
- struct predicate *pred)
+ struct predicate *exec_pred,
+ struct predicate *nonconst_pred_ptr)
{
size_time_entry *e;
bool found = false;
int i;
+ struct predicate nonconst_pred;
- if (false_predicate_p (pred))
+ if (false_predicate_p (exec_pred))
+ return;
+
+ nonconst_pred = and_predicates (summary->conds, nonconst_pred_ptr, exec_pred);
+
+ if (false_predicate_p (&nonconst_pred))
return;
/* We need to create initial empty unconitional clause, but otherwie
gcc_assert (time >= 0);
for (i = 0; vec_safe_iterate (summary->entry, i, &e); i++)
- if (predicates_equal_p (&e->predicate, pred))
+ if (predicates_equal_p (&e->exec_predicate, exec_pred)
+ && predicates_equal_p (&e->nonconst_predicate, &nonconst_pred))
{
found = true;
break;
i = 0;
found = true;
e = &(*summary->entry)[0];
- gcc_assert (!e->predicate.clause[0]);
+ gcc_assert (!e->exec_predicate.clause[0]);
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file,
"\t\tReached limit on number of entries, "
if (dump_file && (dump_flags & TDF_DETAILS) && (time != 0 || size))
{
fprintf (dump_file,
- "\t\tAccounting size:%3.2f, time:%3.2f on %spredicate:",
+ "\t\tAccounting size:%3.2f, time:%3.2f on %spredicate exec:",
((double) size) / INLINE_SIZE_SCALE,
- (time.to_double ()) / INLINE_TIME_SCALE, found ? "" : "new ");
- dump_predicate (dump_file, summary->conds, pred);
+ (time.to_double ()), found ? "" : "new ");
+ dump_predicate (dump_file, summary->conds, exec_pred, 0);
+ if (!predicates_equal_p (exec_pred, &nonconst_pred))
+ {
+ fprintf (dump_file, " nonconst:");
+ dump_predicate (dump_file, summary->conds, &nonconst_pred);
+ }
+ else
+ fprintf (dump_file, "\n");
}
if (!found)
{
struct size_time_entry new_entry;
new_entry.size = size;
new_entry.time = time;
- new_entry.predicate = *pred;
+ new_entry.exec_predicate = *exec_pred;
+ new_entry.nonconst_predicate = nonconst_pred;
vec_safe_push (summary->entry, new_entry);
}
else
}
-/* KNOWN_VALS is partial mapping of parameters of NODE to constant values.
+/* Compute what conditions may or may not hold given invormation about
+ parameters. RET_CLAUSE returns truths that may hold in a specialized copy,
+ whie RET_NONSPEC_CLAUSE returns truths that may hold in an nonspecialized
+ copy when called in a given context. It is a bitmask of conditions. Bit
+ 0 means that condition is known to be false, while bit 1 means that condition
+ may or may not be true. These differs - for example NOT_INLINED condition
+ is always false in the second and also builtin_constant_p tests can not use
+ the fact that parameter is indeed a constant.
+
+ KNOWN_VALS is partial mapping of parameters of NODE to constant values.
KNOWN_AGGS is a vector of aggreggate jump functions for each parameter.
Return clause of possible truths. When INLINE_P is true, assume that we are
inlining.
ERROR_MARK means compile time invariant. */
-static clause_t
+static void
evaluate_conditions_for_known_args (struct cgraph_node *node,
bool inline_p,
vec<tree> known_vals,
vec<ipa_agg_jump_function_p>
- known_aggs)
+ known_aggs,
+ clause_t *ret_clause,
+ clause_t *ret_nonspec_clause)
{
clause_t clause = inline_p ? 0 : 1 << predicate_not_inlined_condition;
+ clause_t nonspec_clause = 1 << predicate_not_inlined_condition;
struct inline_summary *info = inline_summaries->get (node);
int i;
struct condition *c;
if (c->operand_num >= (int) known_vals.length ())
{
clause |= 1 << (i + predicate_first_dynamic_condition);
+ nonspec_clause |= 1 << (i + predicate_first_dynamic_condition);
continue;
}
if (!val)
{
clause |= 1 << (i + predicate_first_dynamic_condition);
+ nonspec_clause |= 1 << (i + predicate_first_dynamic_condition);
continue;
}
if (c->code == CHANGED)
- continue;
+ {
+ nonspec_clause |= 1 << (i + predicate_first_dynamic_condition);
+ continue;
+ }
if (tree_to_shwi (TYPE_SIZE (TREE_TYPE (val))) != c->size)
{
clause |= 1 << (i + predicate_first_dynamic_condition);
+ nonspec_clause |= 1 << (i + predicate_first_dynamic_condition);
continue;
}
if (c->code == IS_NOT_CONSTANT)
- continue;
+ {
+ nonspec_clause |= 1 << (i + predicate_first_dynamic_condition);
+ continue;
+ }
val = fold_unary (VIEW_CONVERT_EXPR, TREE_TYPE (c->val), val);
res = val
continue;
clause |= 1 << (i + predicate_first_dynamic_condition);
+ nonspec_clause |= 1 << (i + predicate_first_dynamic_condition);
}
- return clause;
+ *ret_clause = clause;
+ if (ret_nonspec_clause)
+ *ret_nonspec_clause = nonspec_clause;
}
static void
evaluate_properties_for_edge (struct cgraph_edge *e, bool inline_p,
- clause_t *clause_ptr,
+ clause_t *clause_ptr, clause_t *nonspec_clause_ptr,
vec<tree> *known_vals_ptr,
vec<ipa_polymorphic_call_context>
*known_contexts_ptr,
}
}
- if (clause_ptr)
- *clause_ptr = evaluate_conditions_for_known_args (callee, inline_p,
- known_vals, known_aggs);
+ evaluate_conditions_for_known_args (callee, inline_p,
+ known_vals, known_aggs, clause_ptr,
+ nonspec_clause_ptr);
if (known_vals_ptr)
*known_vals_ptr = known_vals;
}
}
}
- possible_truths = evaluate_conditions_for_known_args (dst, false,
- known_vals,
- vNULL);
+ evaluate_conditions_for_known_args (dst, false,
+ known_vals,
+ vNULL,
+ &possible_truths,
+ /* We are going to specialize,
+ so ignore nonspec truths. */
+ NULL);
known_vals.release ();
- account_size_time (info, 0, 0, &true_pred);
+ account_size_time (info, 0, 0, &true_pred, &true_pred);
/* Remap size_time vectors.
Simplify the predicate by prunning out alternatives that are known
to be true. */
for (i = 0; vec_safe_iterate (entry, i, &e); i++)
{
- struct predicate new_predicate;
- new_predicate = remap_predicate_after_duplication (&e->predicate,
+ struct predicate new_exec_pred;
+ struct predicate new_nonconst_pred;
+ new_exec_pred = remap_predicate_after_duplication (&e->exec_predicate,
possible_truths,
info);
- if (false_predicate_p (&new_predicate))
+ new_nonconst_pred
+ = remap_predicate_after_duplication (&e->nonconst_predicate,
+ possible_truths,
+ info);
+ if (false_predicate_p (&new_exec_pred)
+ || false_predicate_p (&new_nonconst_pred))
optimized_out_size += e->size;
else
- account_size_time (info, e->size, e->time, &new_predicate);
+ account_size_time (info, e->size, e->time, &new_exec_pred,
+ &new_nonconst_pred);
}
/* Remap edge predicates with the same simplification as above.
fprintf (f, " In SCC: %i\n", (int) s->scc_no);
for (i = 0; vec_safe_iterate (s->entry, i, &e); i++)
{
- fprintf (f, " size:%f, time:%f, predicate:",
+ fprintf (f, " size:%f, time:%f",
(double) e->size / INLINE_SIZE_SCALE,
- e->time.to_double () / INLINE_TIME_SCALE);
- dump_predicate (f, s->conds, &e->predicate);
+ e->time.to_double ());
+ if (!true_predicate_p (&e->exec_predicate))
+ {
+ fprintf (f, ", executed if:");
+ dump_predicate (f, s->conds, &e->exec_predicate, 0);
+ }
+ if (!predicates_equal_p (&e->exec_predicate,
+ &e->nonconst_predicate))
+ {
+ fprintf (f, ", nonconst if:");
+ dump_predicate (f, s->conds, &e->nonconst_predicate, 0);
+ }
+ fprintf (f, "\n");
}
if (s->loop_iterations)
{
/* When we run into maximal number of entries, we assign everything to the
constant truth case. Be sure to have it in list. */
bb_predicate = true_predicate ();
- account_size_time (info, 0, 0, &bb_predicate);
+ account_size_time (info, 0, 0, &bb_predicate, &bb_predicate);
bb_predicate = not_inlined_predicate ();
- account_size_time (info, 2 * INLINE_SIZE_SCALE, 0, &bb_predicate);
+ account_size_time (info, 2 * INLINE_SIZE_SCALE, 0, &bb_predicate,
+ &bb_predicate);
if (fbi.info)
compute_bb_predicates (&fbi, node, info);
will_be_nonconstant
= will_be_nonconstant_predicate (&fbi, info,
stmt, nonconstant_names);
+ else
+ will_be_nonconstant = true_predicate ();
if (this_time || this_size)
{
- struct predicate p;
-
this_time *= freq;
prob = eliminated_by_inlining_prob (stmt);
if (prob == 2 && dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "\t\tWill be eliminated by inlining\n");
- if (fbi.info)
- p = and_predicates (info->conds, &bb_predicate,
- &will_be_nonconstant);
- else
- p = true_predicate ();
+ struct predicate p = and_predicates (info->conds, &bb_predicate,
+ &will_be_nonconstant);
+
+ /* We can ignore statement when we proved it is never going
+ to happen, but we can not do that for call statements
+ because edges are accounted specially. */
- if (!false_predicate_p (&p)
- || (is_gimple_call (stmt)
- && !false_predicate_p (&bb_predicate)))
+ if (!false_predicate_p (is_gimple_call (stmt)
+ ? &bb_predicate : &p))
{
time += this_time;
size += this_size;
if (prob)
{
struct predicate ip = not_inlined_predicate ();
- ip = and_predicates (info->conds, &ip, &p);
+ ip = and_predicates (info->conds, &ip, &bb_predicate);
account_size_time (info, this_size * prob,
- this_time * prob, &ip);
+ (sreal)(this_time * prob)
+ / (CGRAPH_FREQ_BASE * 2), &ip,
+ &p);
}
if (prob != 2)
account_size_time (info, this_size * (2 - prob),
- this_time * (2 - prob), &p);
+ (sreal)(this_time * (2 - prob))
+ / (CGRAPH_FREQ_BASE * 2),
+ &bb_predicate,
+ &p);
}
if (!info->fp_expressions && fp_expression_p (stmt))
es->call_stmt_size = eni_size_weights.call_cost;
es->call_stmt_time = eni_time_weights.call_cost;
account_size_time (info, INLINE_SIZE_SCALE * 2,
- INLINE_TIME_SCALE * 2, &t);
+ 2, &t, &t);
t = not_inlined_predicate ();
- account_size_time (info, 2 * INLINE_SIZE_SCALE, 0, &t);
+ account_size_time (info, 2 * INLINE_SIZE_SCALE, 0, &t, &t);
inline_update_overall_summary (node);
info->self_size = info->size;
info->self_time = info->time;
if (flag_checking)
{
inline_update_overall_summary (node);
- gcc_assert (info->time == info->self_time
+ gcc_assert (!(info->time - info->self_time).to_int ()
&& info->size == info->self_size);
}
}
*size += cur_size;
if (min_size)
*min_size += cur_size;
- *time += call_time * prob / REG_BR_PROB_BASE
- * e->frequency * (INLINE_TIME_SCALE / CGRAPH_FREQ_BASE);
+ if (prob == REG_BR_PROB_BASE)
+ *time += ((sreal)(call_time * e->frequency)) / CGRAPH_FREQ_BASE;
+ else
+ *time += ((sreal)call_time) * (prob * e->frequency)
+ / (CGRAPH_FREQ_BASE * REG_BR_PROB_BASE);
}
static void
estimate_node_size_and_time (struct cgraph_node *node,
clause_t possible_truths,
+ clause_t nonspec_possible_truths,
vec<tree> known_vals,
vec<ipa_polymorphic_call_context> known_contexts,
vec<ipa_agg_jump_function_p> known_aggs,
- int *ret_size, int *ret_min_size, sreal *ret_time,
+ int *ret_size, int *ret_min_size,
+ sreal *ret_time,
+ sreal *ret_nonspecialized_time,
inline_hints *ret_hints,
vec<inline_param_summary>
inline_param_summary)
}
}
- for (i = 0; vec_safe_iterate (info->entry, i, &e); i++)
- if (evaluate_predicate (&e->predicate, possible_truths))
- {
- size += e->size;
- gcc_checking_assert (e->time >= 0);
- gcc_checking_assert (time >= 0);
- if (!inline_param_summary.exists ())
- time += e->time;
- else
- {
- int prob = predicate_probability (info->conds,
- &e->predicate,
- possible_truths,
- inline_param_summary);
- gcc_checking_assert (prob >= 0);
- gcc_checking_assert (prob <= REG_BR_PROB_BASE);
- time += e->time * prob / REG_BR_PROB_BASE;
- }
- gcc_checking_assert (time >= 0);
+ estimate_calls_size_and_time (node, &size, &min_size, &time, &hints, possible_truths,
+ known_vals, known_contexts, known_aggs);
+ sreal nonspecialized_time = time;
- }
- gcc_checking_assert (true_predicate_p (&(*info->entry)[0].predicate));
+ for (i = 0; vec_safe_iterate (info->entry, i, &e); i++)
+ {
+ bool nonconst = evaluate_predicate (&e->nonconst_predicate,
+ possible_truths);
+ bool exec = evaluate_predicate (&e->exec_predicate,
+ nonspec_possible_truths);
+ gcc_assert (!nonconst || exec);
+ if (exec)
+ {
+ gcc_checking_assert (e->time >= 0);
+ gcc_checking_assert (time >= 0);
+
+ /* We compute specialized size only because size of nonspecialized
+ copy is context independent.
+
+ The difference between nonspecialized execution and specialized is
+ that nonspecialized is not going to have optimized out computations
+ known to be constant in a specialized setting. */
+ if (nonconst)
+ size += e->size;
+ nonspecialized_time += e->time;
+ if (!nonconst)
+ ;
+ else if (!inline_param_summary.exists ())
+ {
+ if (nonconst)
+ time += e->time;
+ }
+ else
+ {
+ int prob = predicate_probability (info->conds,
+ &e->nonconst_predicate,
+ possible_truths,
+ inline_param_summary);
+ gcc_checking_assert (prob >= 0);
+ gcc_checking_assert (prob <= REG_BR_PROB_BASE);
+ time += e->time * prob / REG_BR_PROB_BASE;
+ }
+ gcc_checking_assert (time >= 0);
+ }
+ }
+ gcc_checking_assert (true_predicate_p (&(*info->entry)[0].exec_predicate));
+ gcc_checking_assert (true_predicate_p (&(*info->entry)[0].nonconst_predicate));
min_size = (*info->entry)[0].size;
gcc_checking_assert (size >= 0);
gcc_checking_assert (time >= 0);
+ gcc_checking_assert (nonspecialized_time >= time);
if (info->loop_iterations
&& !evaluate_predicate (info->loop_iterations, possible_truths))
if (DECL_DECLARED_INLINE_P (node->decl))
hints |= INLINE_HINT_declared_inline;
- estimate_calls_size_and_time (node, &size, &min_size, &time, &hints, possible_truths,
- known_vals, known_contexts, known_aggs);
- gcc_checking_assert (size >= 0);
- gcc_checking_assert (time >= 0);
- time = time / INLINE_TIME_SCALE;
size = RDIV (size, INLINE_SIZE_SCALE);
min_size = RDIV (min_size, INLINE_SIZE_SCALE);
if (dump_file && (dump_flags & TDF_DETAILS))
- fprintf (dump_file, "\n size:%i time:%f\n", (int) size, time.to_double ());
+ fprintf (dump_file, "\n size:%i time:%f nonspec time:%f\n", (int) size,
+ time.to_double (), nonspecialized_time.to_double ());
if (ret_time)
*ret_time = time;
+ if (ret_nonspecialized_time)
+ *ret_nonspecialized_time = nonspecialized_time;
if (ret_size)
*ret_size = size;
if (ret_min_size)
int *ret_size, sreal *ret_time,
inline_hints *hints)
{
- clause_t clause;
-
- clause = evaluate_conditions_for_known_args (node, false, known_vals,
- known_aggs);
- estimate_node_size_and_time (node, clause, known_vals, known_contexts,
- known_aggs, ret_size, NULL, ret_time, hints, vNULL);
+ clause_t clause, nonspec_clause;
+ sreal nonspec_time;
+
+ evaluate_conditions_for_known_args (node, false, known_vals, known_aggs,
+ &clause, &nonspec_clause);
+ estimate_node_size_and_time (node, clause, nonspec_clause,
+ known_vals, known_contexts,
+ known_aggs, ret_size, NULL, ret_time,
+ &nonspec_time, hints, vNULL);
}
/* Translate all conditions from callee representation into caller
struct cgraph_node *to = (edge->caller->global.inlined_to
? edge->caller->global.inlined_to : edge->caller);
struct inline_summary *info = inline_summaries->get (to);
- clause_t clause = 0; /* not_inline is known to be false. */
+ clause_t clause = 0; /* not_inline is known to be false. */
size_time_entry *e;
vec<int> operand_map = vNULL;
vec<int> offset_map = vNULL;
info->fp_expressions |= callee_info->fp_expressions;
if (callee_info->conds)
- evaluate_properties_for_edge (edge, true, &clause, NULL, NULL, NULL);
+ evaluate_properties_for_edge (edge, true, &clause, NULL, NULL, NULL, NULL);
if (ipa_node_params_sum && callee_info->conds)
{
struct ipa_edge_args *args = IPA_EDGE_REF (edge);
for (i = 0; vec_safe_iterate (callee_info->entry, i, &e); i++)
{
struct predicate p = remap_predicate (info, callee_info,
- &e->predicate, operand_map,
+ &e->exec_predicate, operand_map,
offset_map, clause,
&toplev_predicate);
- if (!false_predicate_p (&p))
+ struct predicate nonconstp
+ = remap_predicate (info, callee_info,
+ &e->nonconst_predicate, operand_map,
+ offset_map, clause,
+ &toplev_predicate);
+ if (!false_predicate_p (&p) && !false_predicate_p (&nonconstp))
{
- sreal add_time = e->time * edge->frequency / CGRAPH_FREQ_BASE;
+ sreal add_time = ((sreal)e->time * edge->frequency) / CGRAPH_FREQ_BASE;
int prob = predicate_probability (callee_info->conds,
- &e->predicate,
+ &e->nonconst_predicate,
clause, es->param);
add_time = add_time * prob / REG_BR_PROB_BASE;
if (prob != REG_BR_PROB_BASE
fprintf (dump_file, "\t\tScaling time by probability:%f\n",
(double) prob / REG_BR_PROB_BASE);
}
- account_size_time (info, e->size, add_time, &p);
+ account_size_time (info, e->size, add_time, &p, &nonconstp);
}
}
remap_edge_summaries (edge, edge->callee, info, callee_info, operand_map,
info->time = 0;
for (i = 0; vec_safe_iterate (info->entry, i, &e); i++)
{
- info->size += e->size, info->time += e->time;
+ info->size += e->size;
+ info->time += e->time;
}
estimate_calls_size_and_time (node, &info->size, &info->min_size,
&info->time, NULL,
~(clause_t) (1 << predicate_false_condition),
vNULL, vNULL, vNULL);
- info->time = info->time / INLINE_TIME_SCALE;
info->size = (info->size + INLINE_SIZE_SCALE / 2) / INLINE_SIZE_SCALE;
}
sreal
do_estimate_edge_time (struct cgraph_edge *edge)
{
- sreal time;
+ sreal time, nonspec_time;
int size;
inline_hints hints;
struct cgraph_node *callee;
- clause_t clause;
+ clause_t clause, nonspec_clause;
vec<tree> known_vals;
vec<ipa_polymorphic_call_context> known_contexts;
vec<ipa_agg_jump_function_p> known_aggs;
gcc_checking_assert (edge->inline_failed);
evaluate_properties_for_edge (edge, true,
- &clause, &known_vals, &known_contexts,
- &known_aggs);
- estimate_node_size_and_time (callee, clause, known_vals, known_contexts,
- known_aggs, &size, &min_size, &time, &hints, es->param);
+ &clause, &nonspec_clause, &known_vals,
+ &known_contexts, &known_aggs);
+ estimate_node_size_and_time (callee, clause, nonspec_clause, known_vals,
+ known_contexts, known_aggs, &size, &min_size,
+ &time, &nonspec_time, &hints, es->param);
/* When we have profile feedback, we can quite safely identify hot
edges and for those we disable size limits. Don't do that when
if ((int) edge_growth_cache.length () <= edge->uid)
edge_growth_cache.safe_grow_cleared (symtab->edges_max_uid);
edge_growth_cache[edge->uid].time = time;
+ edge_growth_cache[edge->uid].nonspec_time = nonspec_time;
edge_growth_cache[edge->uid].size = size + (size >= 0);
hints |= simple_edge_hints (edge);
{
int size;
struct cgraph_node *callee;
- clause_t clause;
+ clause_t clause, nonspec_clause;
vec<tree> known_vals;
vec<ipa_polymorphic_call_context> known_contexts;
vec<ipa_agg_jump_function_p> known_aggs;
/* Early inliner runs without caching, go ahead and do the dirty work. */
gcc_checking_assert (edge->inline_failed);
evaluate_properties_for_edge (edge, true,
- &clause, &known_vals, &known_contexts,
+ &clause, &nonspec_clause,
+ &known_vals, &known_contexts,
&known_aggs);
- estimate_node_size_and_time (callee, clause, known_vals, known_contexts,
- known_aggs, &size, NULL, NULL, NULL, vNULL);
+ estimate_node_size_and_time (callee, clause, nonspec_clause, known_vals,
+ known_contexts, known_aggs, &size, NULL, NULL,
+ NULL, NULL, vNULL);
known_vals.release ();
known_contexts.release ();
known_aggs.release ();
{
inline_hints hints;
struct cgraph_node *callee;
- clause_t clause;
+ clause_t clause, nonspec_clause;
vec<tree> known_vals;
vec<ipa_polymorphic_call_context> known_contexts;
vec<ipa_agg_jump_function_p> known_aggs;
/* Early inliner runs without caching, go ahead and do the dirty work. */
gcc_checking_assert (edge->inline_failed);
evaluate_properties_for_edge (edge, true,
- &clause, &known_vals, &known_contexts,
+ &clause, &nonspec_clause,
+ &known_vals, &known_contexts,
&known_aggs);
- estimate_node_size_and_time (callee, clause, known_vals, known_contexts,
- known_aggs, NULL, NULL, NULL, &hints, vNULL);
+ estimate_node_size_and_time (callee, clause, nonspec_clause, known_vals,
+ known_contexts, known_aggs, NULL, NULL,
+ NULL, NULL, &hints, vNULL);
known_vals.release ();
known_contexts.release ();
known_aggs.release ();
e.size = streamer_read_uhwi (&ib);
e.time = sreal::stream_in (&ib);
- e.predicate = read_predicate (&ib);
+ e.exec_predicate = read_predicate (&ib);
+ e.nonconst_predicate = read_predicate (&ib);
vec_safe_push (info->entry, e);
}
{
streamer_write_uhwi (ob, e->size);
e->time.stream_out (ob);
- write_predicate (ob, &e->predicate);
+ write_predicate (ob, &e->exec_predicate);
+ write_predicate (ob, &e->nonconst_predicate);
}
write_predicate (ob, info->loop_iterations);
write_predicate (ob, info->loop_stride);
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