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genautomata.c (curr_state_pass_num): Delete. 

2010-06-05  Segher Boessenkool  <segher@kernel.crashing.org>

        * genautomata.c (curr_state_pass_num): Delete.
        (min_issue_delay_pass_states): Delete.
        (min_issue_delay): Delete.
        (initiate_min_issue_delay_pass_states): Delete.
        (output_min_issue_delay_table): Compute min_issue_delay_vect
        using a breadth-first search variant.
        (output_tables): Don't call initiate_min_issue_delay_pass_states.

From-SVN: r160306
This commit is contained in:
Segher Boessenkool 2010-06-05 05:11:46 +02:00 committed by Segher Boessenkool
parent c69d3a0e59
commit 99d9820095
2 changed files with 84 additions and 82 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2010-06-05 Segher Boessenkool <segher@kernel.crashing.org>
* genautomata.c (curr_state_pass_num): Delete.
(min_issue_delay_pass_states): Delete.
(min_issue_delay): Delete.
(initiate_min_issue_delay_pass_states): Delete.
(output_min_issue_delay_table): Compute min_issue_delay_vect
using a breadth-first search variant.
(output_tables): Don't call initiate_min_issue_delay_pass_states.
2010-06-04 H.J. Lu <hongjiu.lu@intel.com>
PR boostrap/44421

156
gcc/genautomata.c
View File

@ -7488,72 +7488,6 @@ output_trans_table (automaton_t automaton)
VEC_free (vect_el_t, heap, transition_vect);
}
/* The current number of passing states to find minimal issue delay
value for an ainsn and state. */
static int curr_state_pass_num;
/* This recursive function passes states to find minimal issue delay
value for AINSN. The state being visited is STATE. The function
returns minimal issue delay value for AINSN in STATE or -1 if we
enter into a loop. */
static int
min_issue_delay_pass_states (state_t state, ainsn_t ainsn)
{
arc_t arc;
int min_insn_issue_delay, insn_issue_delay;
if (state->state_pass_num == curr_state_pass_num
|| state->min_insn_issue_delay != -1)
/* We've entered into a loop or already have the correct value for
given state and ainsn. */
return state->min_insn_issue_delay;
state->state_pass_num = curr_state_pass_num;
min_insn_issue_delay = -1;
for (arc = first_out_arc (state); arc != NULL; arc = next_out_arc (arc))
if (arc->insn == ainsn)
{
min_insn_issue_delay = 0;
break;
}
else
{
insn_issue_delay = min_issue_delay_pass_states (arc->to_state, ainsn);
if (insn_issue_delay != -1)
{
if (arc->insn->insn_reserv_decl
== DECL_INSN_RESERV (advance_cycle_insn_decl))
insn_issue_delay++;
if (min_insn_issue_delay == -1
|| min_insn_issue_delay > insn_issue_delay)
{
min_insn_issue_delay = insn_issue_delay;
if (insn_issue_delay == 0)
break;
}
}
}
return min_insn_issue_delay;
}
/* The function searches minimal issue delay value for AINSN in STATE.
The function can return negative value if we can not issue AINSN. We
will report about it later. */
static int
min_issue_delay (state_t state, ainsn_t ainsn)
{
curr_state_pass_num++;
state->min_insn_issue_delay = min_issue_delay_pass_states (state, ainsn);
return state->min_insn_issue_delay;
}
/* The function initiates code for finding minimal issue delay values.
It should be called only once. */
static void
initiate_min_issue_delay_pass_states (void)
{
curr_state_pass_num = 0;
}
/* Form and output vectors representing minimal issue delay table of
AUTOMATON. The table is state x ainsn -> minimal issue delay of
the ainsn. */
@ -7562,11 +7496,11 @@ output_min_issue_delay_table (automaton_t automaton)
{
vla_hwint_t min_issue_delay_vect;
vla_hwint_t compressed_min_issue_delay_vect;
vect_el_t min_delay;
ainsn_t ainsn;
size_t i, min_issue_delay_len;
size_t compressed_min_issue_delay_len;
size_t i;
size_t min_issue_delay_len, compressed_min_issue_delay_len;
size_t cfactor;
int changed;
/* Create vect of pointers to states ordered by num of transitions
from the state (state with the maximum num is the first). */
@ -7577,27 +7511,86 @@ output_min_issue_delay_table (automaton_t automaton)
* automaton->insn_equiv_classes_num);
min_issue_delay_vect = VEC_alloc (vect_el_t, heap, min_issue_delay_len);
for (i = 0; i < min_issue_delay_len; i++)
VEC_quick_push (vect_el_t, min_issue_delay_vect, 0);
VEC_quick_push (vect_el_t, min_issue_delay_vect, -1);
automaton->max_min_delay = 0;
for (ainsn = automaton->ainsn_list; ainsn != NULL; ainsn = ainsn->next_ainsn)
do
{
size_t state_no;
changed = 0;
for (state_no = 0; state_no < VEC_length (state_t, output_states_vect);
state_no++)
{
state_t s = VEC_index (state_t, output_states_vect, state_no);
arc_t arc;
for (arc = first_out_arc (s); arc; arc = next_out_arc (arc))
{
int k;
size_t asn = s->order_state_num
* automaton->insn_equiv_classes_num
+ arc->insn->insn_equiv_class_num;
if (VEC_index (vect_el_t, min_issue_delay_vect, asn))
{
VEC_replace (vect_el_t, min_issue_delay_vect, asn, 0);
changed = 1;
}
for (k = 0; k < automaton->insn_equiv_classes_num; k++)
{
size_t n0, n1;
vect_el_t delay0, delay1;
n0 = s->order_state_num
* automaton->insn_equiv_classes_num
+ k;
n1 = arc->to_state->order_state_num
* automaton->insn_equiv_classes_num
+ k;
delay0 = VEC_index (vect_el_t, min_issue_delay_vect, n0);
delay1 = VEC_index (vect_el_t, min_issue_delay_vect, n1);
if (delay1 != -1)
{
if (arc->insn->insn_reserv_decl
== DECL_INSN_RESERV (advance_cycle_insn_decl))
delay1++;
if (delay1 < delay0 || delay0 == -1)
{
VEC_replace (vect_el_t, min_issue_delay_vect, n0, delay1);
changed = 1;
}
}
}
}
}
}
while (changed);
automaton->max_min_delay = 0;
for (ainsn = automaton->ainsn_list; ainsn; ainsn = ainsn->next_ainsn)
if (ainsn->first_ainsn_with_given_equivalence_num)
{
for (i = 0; i < VEC_length (state_t, output_states_vect); i++)
VEC_index (state_t, output_states_vect, i)->min_insn_issue_delay = -1;
for (i = 0; i < VEC_length (state_t, output_states_vect); i++)
{
state_t s = VEC_index (state_t, output_states_vect, i);
min_delay = min_issue_delay (s, ainsn);
if (automaton->max_min_delay < min_delay)
automaton->max_min_delay = min_delay;
VEC_replace (vect_el_t, min_issue_delay_vect,
s->order_state_num
* automaton->insn_equiv_classes_num
+ ainsn->insn_equiv_class_num,
min_delay);
size_t np = s->order_state_num
* automaton->insn_equiv_classes_num
+ ainsn->insn_equiv_class_num;
vect_el_t x = VEC_index (vect_el_t, min_issue_delay_vect, np);
if (automaton->max_min_delay < x)
automaton->max_min_delay = x;
if (x == -1)
VEC_replace (vect_el_t, min_issue_delay_vect, np, 0);
}
}
fprintf (output_file, "/* Vector of min issue delay of insns. */\n");
fprintf (output_file, "static const ");
output_range_type (output_file, 0, automaton->max_min_delay);
@ -7749,7 +7742,6 @@ output_tables (void)
{
automaton_t automaton;
initiate_min_issue_delay_pass_states ();
for (automaton = description->first_automaton;
automaton != NULL;
automaton = automaton->next_automaton)