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aco/ra: remove special-casing of p_logical_end

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There is always enough registers available and this code
was broken anyway and had no effect.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29962>
This commit is contained in:
Daniel Schürmann
2024-07-10 12:10:26 +02:00
committed by Marge Bot
parent ad01e473f5
commit fab95c78f9
1 changed files with 0 additions and 34 deletions
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src/amd/compiler/aco_register_allocation.cpp
-34
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@@ -3014,40 +3014,6 @@ register_allocation(Program* program, ra_test_policy policy)
std::find_if(block.instructions.begin(), block.instructions.end(), NonPhi);
for (; instr_it != block.instructions.end(); ++instr_it) {
aco_ptr<Instruction>& instr = *instr_it;
/* parallelcopies from p_phi are inserted here which means
* live ranges of killed operands end here as well */
if (instr->opcode == aco_opcode::p_logical_end) {
/* no need to process this instruction any further */
if (block.logical_succs.size() != 1) {
instructions.emplace_back(std::move(instr));
continue;
}
Block& succ = program->blocks[block.logical_succs[0]];
unsigned idx = 0;
for (; idx < succ.logical_preds.size(); idx++) {
if (succ.logical_preds[idx] == block.index)
break;
}
for (aco_ptr<Instruction>& phi : succ.instructions) {
if (phi->opcode == aco_opcode::p_phi) {
if (phi->operands[idx].isTemp() &&
phi->operands[idx].getTemp().type() == RegType::sgpr &&
phi->operands[idx].isFirstKillBeforeDef()) {
Definition phi_op(
read_variable(ctx, phi->operands[idx].getTemp(), block.index));
phi_op.setFixed(ctx.assignments[phi_op.tempId()].reg);
register_file.clear(phi_op);
}
} else if (phi->opcode != aco_opcode::p_linear_phi) {
break;
}
}
instructions.emplace_back(std::move(instr));
continue;
}
std::vector<std::pair<Operand, Definition>> parallelcopy;
bool temp_in_scc = register_file[scc];