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aco/optimizer: apply dpp without label_usedef

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Less interference with output modifier labels.

Foz-DB GFX1201:
Totals from 109 (0.14% of 79789) affected shaders:
Instrs: 161005 -> 160890 (-0.07%); split: -0.08%, +0.01%
CodeSize: 859472 -> 859720 (+0.03%); split: -0.03%, +0.06%
VGPRs: 6420 -> 6432 (+0.19%)
Latency: 1453659 -> 1452201 (-0.10%); split: -0.14%, +0.04%
InvThroughput: 171403 -> 171135 (-0.16%); split: -0.21%, +0.06%
VClause: 2746 -> 2743 (-0.11%)
SClause: 5256 -> 5257 (+0.02%)
Copies: 11085 -> 11008 (-0.69%); split: -0.89%, +0.20%
Branches: 3758 -> 3756 (-0.05%)
VALU: 90903 -> 90793 (-0.12%); split: -0.14%, +0.02%

Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34858>
This commit is contained in:
Georg Lehmann 2025-05-09 11:24:02 +02:00 • committed by Marge Bot
parent 94ea9fd999
commit 177c98f95a
1 changed files with 1 additions and 2 deletions
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3
src/amd/compiler/aco_optimizer.cpp
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@ -4645,8 +4645,7 @@ select_instruction(opt_ctx& ctx, aco_ptr<Instruction>& instr)
continue;
ssa_info info = ctx.info[instr->operands[i].tempId()];
if (!info.is_usedef() || !info.parent_instr->isDPP() ||
info.parent_instr->opcode != aco_opcode::v_mov_b32 ||
if (!info.parent_instr->isDPP() || info.parent_instr->opcode != aco_opcode::v_mov_b32 ||
info.parent_instr->pass_flags != instr->pass_flags)
continue;