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aco: consider affinities when creating v_mac_f32

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Totals from 8487 (6.65% of 127638) affected shaders:
CodeSize: 62061988 -> 62058020 (-0.01%); split: -0.01%, +0.01%
Instrs: 11910757 -> 11885409 (-0.21%); split: -0.21%, +0.00%
Copies: 1065244 -> 1040945 (-2.28%); split: -2.30%, +0.02%
Branches: 349665 -> 348914 (-0.21%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4990>
This commit is contained in:
Rhys Perry 2020-05-08 17:58:07 +01:00 • committed by Marge Bot
parent 138eed45b5
commit 51e797e233
1 changed files with 8 additions and 2 deletions
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10
src/amd/compiler/aco_register_allocation.cpp
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@ -1738,8 +1738,14 @@ void register_allocation(Program *program, std::vector<TempSet>& live_out_per_bl
instr->operands[1].isTemp() &&
instr->operands[1].getTemp().type() == RegType::vgpr &&
!instr->usesModifiers()) {
instr->format = Format::VOP2;
instr->opcode = aco_opcode::v_mac_f32;
unsigned def_id = instr->definitions[0].tempId();
auto it = ctx.affinities.find(def_id);
if (it == ctx.affinities.end() || !ctx.assignments[it->second].assigned ||
instr->operands[2].physReg() == ctx.assignments[it->second].reg ||
register_file.test(ctx.assignments[it->second].reg, instr->operands[2].bytes())) {
instr->format = Format::VOP2;
instr->opcode = aco_opcode::v_mac_f32;
}
}
/* handle definitions which must have the same register as an operand */