Mesa (master): i965/fs: Add some optional debug printfs to scheduling.
Eric Anholt
anholt at kemper.freedesktop.org
Fri Dec 14 23:25:13 UTC 2012
Module: Mesa
Branch: master
Commit: ba864bfcfaceac37a5f9292795dc5aba7dc2c0e2
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=ba864bfcfaceac37a5f9292795dc5aba7dc2c0e2
Author: Eric Anholt <eric at anholt.net>
Date: Tue Dec 4 13:52:19 2012 -0800
i965/fs: Add some optional debug printfs to scheduling.
Seeing when instructions become available to schedule is really useful.
Acked-by: Kenneth Graunke <kenneth at whitecape.org>
---
.../dri/i965/brw_fs_schedule_instructions.cpp | 21 ++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp b/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp
index 2461262..14de5f8 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp
@@ -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;
}
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