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LTO balanced map: add stats about insns and symbols. 

* lto-partition.c (new_partition): Reset number of symbols.
	(add_symbol_to_partition_1): Increment number of symbols.
	(undo_partition): Decrement number of symbols.
	(lto_balanced_map): Dump number of symbols and insns that
	belong to a partition.
	* lto-partition.h (struct ltrans_partition_def): Add symbol counter.

From-SVN: r223750
This commit is contained in:
Martin Liska 2015-05-27 15:17:13 +02:00 committed by Martin Liska
parent 4d45be537b
commit faae53f8ca
3 changed files with 34 additions and 1 deletions
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9
gcc/lto/ChangeLog
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@ -1,3 +1,12 @@
2015-05-27 Martin Liska <mliska@suse.cz>
* lto-partition.c (new_partition): Reset number of symbols.
(add_symbol_to_partition_1): Increment number of symbols.
(undo_partition): Decrement number of symbols.
(lto_balanced_map): Dump number of symbols and insns that
belong to a partition.
* lto-partition.h (struct ltrans_partition_def): Add symbol counter.
2015-05-22 Jan Hubicka <hubicka@ucw.cz>
* lto.c (hash_canonical_type): Be sure we hash only types that

25
gcc/lto/lto-partition.c
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@ -73,6 +73,7 @@ new_partition (const char *name)
part->encoder = lto_symtab_encoder_new (false);
part->name = name;
part->insns = 0;
part->symbols = 0;
ltrans_partitions.safe_push (part);
return part;
}
@ -157,6 +158,8 @@ add_symbol_to_partition_1 (ltrans_partition part, symtab_node *node)
gcc_assert (c != SYMBOL_EXTERNAL
&& (c == SYMBOL_DUPLICATE || !symbol_partitioned_p (node)));
part->symbols++;
lto_set_symtab_encoder_in_partition (part->encoder, node);
if (symbol_partitioned_p (node))
@ -274,6 +277,7 @@ undo_partition (ltrans_partition partition, unsigned int n_nodes)
{
symtab_node *node = lto_symtab_encoder_deref (partition->encoder,
n_nodes);
partition->symbols--;
cgraph_node *cnode;
/* After UNDO we no longer know what was visited. */
@ -462,7 +466,7 @@ lto_balanced_map (int n_lto_partitions)
auto_vec<varpool_node *> varpool_order;
int i;
struct cgraph_node *node;
int total_size = 0, best_total_size = 0;
int original_total_size, total_size = 0, best_total_size = 0;
int partition_size;
ltrans_partition partition;
int last_visited_node = 0;
@ -488,6 +492,8 @@ lto_balanced_map (int n_lto_partitions)
total_size += inline_summaries->get (node)->size;
}
original_total_size = total_size;
/* Streaming works best when the source units do not cross partition
boundaries much. This is because importing function from a source
unit tends to import a lot of global trees defined there. We should
@ -782,6 +788,23 @@ lto_balanced_map (int n_lto_partitions)
add_sorted_nodes (next_nodes, partition);
free (order);
if (symtab->dump_file)
{
fprintf (symtab->dump_file, "\nPartition sizes:\n");
unsigned partitions = ltrans_partitions.length ();
for (unsigned i = 0; i < partitions ; i++)
{
ltrans_partition p = ltrans_partitions[i];
fprintf (symtab->dump_file, "partition %d contains %d (%2.2f%%)"
" symbols and %d (%2.2f%%) insns\n", i, p->symbols,
100.0 * p->symbols / n_nodes, p->insns,
100.0 * p->insns / original_total_size);
}
fprintf (symtab->dump_file, "\n");
}
}
/* Return true if we must not change the name of the NODE. The name as

1
gcc/lto/lto-partition.h
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@ -26,6 +26,7 @@ struct ltrans_partition_def
lto_symtab_encoder_t encoder;
const char * name;
int insns;
int symbols;
hash_set<symtab_node *> *initializers_visited;
};