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r600/sfn: extract t-slot allocation when filling ALU groups

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Also replace the magic number 0x10 with AluOp::t to make it easier to
understand what is tested.

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Assisted-by: Copilot (auto mode)
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41945>
This commit is contained in:
Gert Wollny 2026-04-22 17:23:27 +02:00 • committed by Marge Bot
parent e083a06bf5
commit 100061cdcf
1 changed files with 25 additions and 12 deletions
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37
src/gallium/drivers/r600/sfn/sfn_scheduler.cpp
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@ -185,6 +185,10 @@ private:
AluGroup& group,
bool& success,
const AluScheduleContext& alu_ctx);
void try_schedule_alu_trans_slot(AluGroup& group,
bool& success,
const AluScheduleContext& alu_ctx,
int free_slots);
bool handle_alu_group_fill_failure(Shader::ShaderBlocks& out_blocks,
AluGroup& group,
const AluScheduleContext& alu_ctx);
@ -601,18 +605,7 @@ BlockScheduler::fill_alu_group(Shader::ShaderBlocks& out_blocks,
if (group.has_kill_op())
break;
/* Apparently one can't schedule a t-slot if there is already
* and LDS instruction scheduled.
* TODO: check whether this is only relevant for actual LDS instructions
* or also for instructions that read from the LDS return value queue */
if (free_slots & 0x10 && !alu_ctx.has_lds_ready) {
sfn_log << SfnLog::schedule << "Try schedule TRANS channel\n";
if (!alu_trans_ready.empty())
success |= schedule_alu_to_group_trans(group, alu_trans_ready);
if (!alu_vec_ready.empty())
success |= schedule_alu_to_group_trans(group, alu_vec_ready);
}
try_schedule_alu_trans_slot(group, success, alu_ctx, free_slots);
if (success) {
++m_alu_groups_scheduled;
@ -629,6 +622,26 @@ BlockScheduler::fill_alu_group(Shader::ShaderBlocks& out_blocks,
return true;
}
void
BlockScheduler::try_schedule_alu_trans_slot(AluGroup& group,
bool& success,
const AluScheduleContext& alu_ctx,
int free_slots)
{
/* Apparently one can't schedule a t-slot if there is already
* and LDS instruction scheduled.
* TODO: check whether this is only relevant for actual LDS instructions
* or also for instructions that read from the LDS return value queue */
if (free_slots & AluOp::t && !alu_ctx.has_lds_ready) {
sfn_log << SfnLog::schedule << "Try schedule TRANS channel\n";
if (!alu_trans_ready.empty())
success |= schedule_alu_to_group_trans(group, alu_trans_ready);
if (!alu_vec_ready.empty())
success |= schedule_alu_to_group_trans(group, alu_vec_ready);
}
}
bool
BlockScheduler::handle_alu_group_fill_failure(Shader::ShaderBlocks& out_blocks,
AluGroup& group,