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aco/live_var_analysis: use Clobbered flag to calculate additional operand demand

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30299>
This commit is contained in:
Daniel Schürmann 2024-07-04 10:00:27 +02:00 • committed by Marge Bot
parent 5a6fa8a8eb
commit 91f65d5935
1 changed files with 7 additions and 14 deletions
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21
src/amd/compiler/aco_live_var_analysis.cpp
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@ -28,17 +28,6 @@ get_live_changes(Instruction* instr)
return changes;
}
RegisterDemand
get_additional_operand_demand(Instruction* instr)
{
RegisterDemand additional_demand;
int op_idx = get_op_fixed_to_def(instr);
if (op_idx != -1 && !instr->operands[op_idx].isKill())
additional_demand += instr->definitions[0].getTemp();
return additional_demand;
}
RegisterDemand
get_temp_registers(Instruction* instr)
{
@ -57,10 +46,11 @@ get_temp_registers(Instruction* instr)
demand_before += op.getTemp();
if (op.isLateKill())
demand_after += op.getTemp();
} else if (op.isClobbered() && !op.isKill()) {
demand_before += op.getTemp();
}
}
demand_before += get_additional_operand_demand(instr);
demand_after.update(demand_before);
return demand_after;
}
@ -257,6 +247,7 @@ process_live_temps_per_block(live_ctx& ctx, Block* block)
}
/* GEN */
RegisterDemand operand_demand;
for (unsigned i = 0; i < insn->operands.size(); ++i) {
Operand& operand = insn->operands[i];
if (!operand.isTemp())
@ -287,11 +278,13 @@ process_live_temps_per_block(live_ctx& ctx, Block* block)
if (operand.isLateKill())
insn->register_demand += temp;
new_demand += temp;
} else if (operand.isClobbered()) {
operand_demand += temp;
}
}
RegisterDemand before_instr = new_demand + get_additional_operand_demand(insn);
insn->register_demand.update(before_instr);
operand_demand += new_demand;
insn->register_demand.update(operand_demand);
block->register_demand.update(insn->register_demand);
}