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i965/fs: Add some optional debug printfs to scheduling.

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Seeing when instructions become available to schedule is really useful.

Acked-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2012-12-04 13:52:19 -08:00
parent 7a9f940cab
commit ba864bfcfa
1 changed files with 21 additions and 0 deletions
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21
src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp
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@ -52,6 +52,8 @@
* from in picking among those.
*/
static bool debug = false;
class schedule_node : public exec_node
{
public:
@ -513,6 +515,11 @@ instruction_scheduler::schedule_instructions(fs_inst *next_block_header)
*/
time = MAX2(time + 1, chosen_time);
if (debug) {
printf("clock %4d, scheduled: ", time);
v->dump_instruction(chosen->inst);
}
/* Now that we've scheduled a new instruction, some of its
* children can be promoted to the list of instructions ready to
* be scheduled. Update the children's unblocked time for this
@ -526,6 +533,10 @@ instruction_scheduler::schedule_instructions(fs_inst *next_block_header)
child->parent_count--;
if (child->parent_count == 0) {
if (debug) {
printf("now available: ");
v->dump_instruction(child->inst);
}
instructions.push_tail(child);
}
}
@ -560,6 +571,11 @@ fs_visitor::schedule_instructions(bool post_reg_alloc)
else
grf_count = virtual_grf_count;
if (debug) {
printf("\nInstructions before scheduling (reg_alloc %d)\n", post_reg_alloc);
dump_instructions();
}
instruction_scheduler sched(this, mem_ctx, grf_count, post_reg_alloc);
while (!next_block_header->is_tail_sentinel()) {
@ -583,5 +599,10 @@ fs_visitor::schedule_instructions(bool post_reg_alloc)
sched.schedule_instructions(next_block_header);
}
if (debug) {
printf("\nInstructions after scheduling (reg_alloc %d)\n", post_reg_alloc);
dump_instructions();
}
this->live_intervals_valid = false;
}