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genmatch.c (struct dt_node): Add statistic fields.

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2015-07-24  Richard Biener  <rguenther@suse.de>

	* genmatch.c (struct dt_node): Add statistic fields.
	(dt_node::analyze): New method.
	(decision_tree::gen_gimple): Call analyze on the root node
	and print statistics to stderr.
	(decision_tree::gen_generic): Likewise.

From-SVN: r226154
This commit is contained in:
Richard Biener 2015-07-24 12:39:08 +00:00 • committed by Richard Biener
parent 21aacde458
commit 803835ded7
2 changed files with 51 additions and 0 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2015-07-24 Richard Biener <rguenther@suse.de>
* genmatch.c (struct dt_node): Add statistic fields.
(dt_node::analyze): New method.
(decision_tree::gen_gimple): Call analyze on the root node
and print statistics to stderr.
(decision_tree::gen_generic): Likewise.
2015-07-24 Richard Biener <rguenther@suse.de>
* fold-const.c (fold_binary_loc): Move simplifying of comparisons

43
gcc/genmatch.c
View file

@ -1212,6 +1212,11 @@ struct dt_node
unsigned level;
vec<dt_node *> kids;
/* Statistics. */
unsigned num_leafs;
unsigned total_size;
unsigned max_level;
dt_node (enum dt_type type_): type (type_), level (0), kids (vNULL) {}
dt_node *append_node (dt_node *);
@ -1226,6 +1231,8 @@ struct dt_node
void gen_kids_1 (FILE *, int, bool,
vec<dt_operand *>, vec<dt_operand *>, vec<dt_operand *>,
vec<dt_operand *>, vec<dt_operand *>, vec<dt_node *>);
void analyze ();
};
/* Generic decision tree node used for DT_OPERAND and DT_MATCH. */
@ -1428,6 +1435,30 @@ dt_node::append_simplify (simplify *s, unsigned pattern_no,
return append_node (n);
}
/* Analyze the node and its children. */
void
dt_node::analyze ()
{
num_leafs = 0;
total_size = 1;
max_level = level;
if (type == DT_SIMPLIFY)
{
num_leafs = 1;
return;
}
for (unsigned i = 0; i < kids.length (); ++i)
{
kids[i]->analyze ();
num_leafs += kids[i]->num_leafs;
total_size += kids[i]->total_size;
max_level = MAX (max_level, kids[i]->max_level);
}
}
/* Insert O into the decision tree and return the decision tree node found
or created. */
@ -2912,6 +2943,12 @@ dt_simplify::gen (FILE *f, int indent, bool gimple)
void
decision_tree::gen_gimple (FILE *f)
{
root->analyze ();
fprintf (stderr, "GIMPLE decision tree has %u leafs, maximum depth %u and "
"a total number of %u nodes\n", root->num_leafs, root->max_level,
root->total_size);
for (unsigned n = 1; n <= 3; ++n)
{
fprintf (f, "\nstatic bool\n"
@ -2958,6 +2995,12 @@ decision_tree::gen_gimple (FILE *f)
void
decision_tree::gen_generic (FILE *f)
{
root->analyze ();
fprintf (stderr, "GENERIC decision tree has %u leafs, maximum depth %u and "
"a total number of %u nodes\n", root->num_leafs, root->max_level,
root->total_size);
for (unsigned n = 1; n <= 3; ++n)
{
fprintf (f, "\ntree\n"