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aco/live_var_analysis: change worklist to a single integer

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Reduces overall compile times by ~0.45%.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11879>
This commit is contained in:
Daniel Schürmann 2021-07-14 14:56:48 +02:00
parent 20eaa074ec
commit 71aab9607d
1 changed files with 6 additions and 10 deletions
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16
src/amd/compiler/aco_live_var_analysis.cpp
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@ -84,7 +84,7 @@ get_demand_before(RegisterDemand demand, aco_ptr<Instruction>& instr,
namespace {
void
process_live_temps_per_block(Program* program, live& lives, Block* block,
std::set<unsigned>& worklist, std::vector<uint16_t>& phi_sgpr_ops)
unsigned& worklist, std::vector<uint16_t>& phi_sgpr_ops)
{
std::vector<RegisterDemand>& register_demand = lives.register_demand[block->index];
RegisterDemand new_demand;
@ -209,7 +209,7 @@ process_live_temps_per_block(Program* program, live& lives, Block* block,
for (unsigned pred_idx : preds) {
auto it = lives.live_out[pred_idx].insert(t);
if (it.second)
worklist.insert(pred_idx);
worklist = std::max(worklist, pred_idx + 1);
}
}
@ -230,7 +230,7 @@ process_live_temps_per_block(Program* program, live& lives, Block* block,
/* check if we changed an already processed block */
const bool inserted = lives.live_out[preds[i]].insert(operand.tempId()).second;
if (inserted) {
worklist.insert(preds[i]);
worklist = std::max(worklist, preds[i] + 1);
if (insn->opcode == aco_opcode::p_phi && operand.getTemp().type() == RegType::sgpr)
phi_sgpr_ops[preds[i]] += operand.size();
}
@ -385,7 +385,7 @@ live_var_analysis(Program* program)
live result;
result.live_out.resize(program->blocks.size());
result.register_demand.resize(program->blocks.size());
std::set<unsigned> worklist;
unsigned worklist = program->blocks.size();
std::vector<uint16_t> phi_sgpr_ops(program->blocks.size());
RegisterDemand new_demand;
@ -393,12 +393,8 @@ live_var_analysis(Program* program)
/* this implementation assumes that the block idx corresponds to the block's position in
* program->blocks vector */
for (Block& block : program->blocks)
worklist.insert(block.index);
while (!worklist.empty()) {
std::set<unsigned>::reverse_iterator b_it = worklist.rbegin();
unsigned block_idx = *b_it;
worklist.erase(block_idx);
while (worklist) {
unsigned block_idx = --worklist;
process_live_temps_per_block(program, result, &program->blocks[block_idx], worklist,
phi_sgpr_ops);
new_demand.update(program->blocks[block_idx].register_demand);