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aco: don't create vector affinities for operands which are not killed or are duplicates

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Totals from affected shaders:
SGPRS: 825184 -> 825184 (0.00 %)
VGPRS: 697640 -> 697240 (-0.06 %)
Code Size: 79244104 -> 79201072 (-0.05 %) bytes
Max Waves: 42388 -> 42386 (-0.00 %)

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4573>
This commit is contained in:
Daniel Schürmann 2020-04-15 12:05:55 +01:00 • committed by Marge Bot
parent edc2b57ac1
commit 6792e134f3
1 changed files with 1 additions and 1 deletions
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2
src/amd/compiler/aco_register_allocation.cpp
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@ -1410,7 +1410,7 @@ void register_allocation(Program *program, std::vector<TempSet>& live_out_per_bl
/* add vector affinities */
if (instr->opcode == aco_opcode::p_create_vector) {
for (const Operand& op : instr->operands) {
if (op.isTemp() && op.getTemp().type() == instr->definitions[0].getTemp().type())
if (op.isTemp() && op.isFirstKill() && op.getTemp().type() == instr->definitions[0].getTemp().type())
ctx.vectors[op.tempId()] = instr.get();
}
}