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aco/gfx12: use s_add_u64

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fossil-db (gfx1201):
Totals from 122 (0.15% of 79377) affected shaders:
Instrs: 3640138 -> 3637577 (-0.07%); split: -0.07%, +0.00%
CodeSize: 19133796 -> 19120080 (-0.07%); split: -0.08%, +0.01%
SpillSGPRs: 666 -> 650 (-2.40%)
SpillVGPRs: 2147 -> 2159 (+0.56%)
Scratch: 254208 -> 255232 (+0.40%)
Latency: 21529337 -> 21522317 (-0.03%); split: -0.04%, +0.00%
InvThroughput: 4048519 -> 4047233 (-0.03%); split: -0.03%, +0.00%
VClause: 90453 -> 90455 (+0.00%)
SClause: 67846 -> 67674 (-0.25%); split: -0.28%, +0.03%
Copies: 287449 -> 287476 (+0.01%); split: -0.04%, +0.05%
Branches: 104526 -> 104530 (+0.00%); split: -0.00%, +0.01%
PreSGPRs: 9795 -> 9723 (-0.74%); split: -0.78%, +0.04%
VALU: 2004219 -> 2003031 (-0.06%); split: -0.06%, +0.00%
SALU: 492651 -> 491737 (-0.19%); split: -0.19%, +0.00%
VMEM: 161317 -> 161341 (+0.01%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34730>
This commit is contained in:
Rhys Perry 2025-04-23 16:28:15 +01:00 • committed by Marge Bot
parent 821c1bfa7e
commit 5b4813c4f0
1 changed files with 3 additions and 0 deletions
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3
src/amd/compiler/aco_instruction_selection.cpp
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@ -1732,6 +1732,9 @@ visit_alu_instr(isel_context* ctx, nir_alu_instr* instr)
} else if (dst.regClass() == v1 && instr->def.bit_size == 16) {
emit_vop3p_instruction(ctx, instr, aco_opcode::v_pk_add_u16, dst);
break;
} else if (dst.regClass() == s2 && ctx->program->gfx_level >= GFX12) {
emit_sop2_instruction(ctx, instr, aco_opcode::s_add_u64, dst, false);
break;
}
Temp src0 = get_alu_src(ctx, instr->src[0]);