aco: don't create unnecessary addition in indirect get_sampler_desc()
I don't think this has any effect on GFX9+ because the addition is combined into the load. fossil-db (polaris10): Totals from 12595 (9.29% of 135627) affected shaders: SGPRs: 1054348 -> 1054860 (+0.05%); split: -0.02%, +0.07% VGPRs: 667240 -> 667320 (+0.01%); split: -0.01%, +0.02% CodeSize: 82761508 -> 82512816 (-0.30%); split: -0.30%, +0.00% MaxWaves: 62182 -> 62181 (-0.00%) Instrs: 16072934 -> 16010764 (-0.39%); split: -0.39%, +0.00% Latency: 582819635 -> 582287964 (-0.09%); split: -0.13%, +0.04% InvThroughput: 276460536 -> 276417613 (-0.02%); split: -0.06%, +0.05% VClause: 261656 -> 261654 (-0.00%); split: -0.01%, +0.01% SClause: 680952 -> 680854 (-0.01%); split: -0.05%, +0.04% Copies: 1727202 -> 1727742 (+0.03%); split: -0.12%, +0.15% Branches: 547050 -> 547033 (-0.00%); split: -0.01%, +0.00% 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/14043>
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@ -5865,9 +5865,10 @@ get_sampler_desc(isel_context* ctx, nir_deref_instr* deref_instr,
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if (!index_set) {
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off = bld.copy(bld.def(s1), Operand::c32(offset));
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} else {
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off = Operand(
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(Temp)bld.sop2(aco_opcode::s_add_i32, bld.def(s1), bld.def(s1, scc), Operand::c32(offset),
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bld.sop2(aco_opcode::s_mul_i32, bld.def(s1), Operand::c32(stride), index)));
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off = bld.sop2(aco_opcode::s_mul_i32, bld.def(s1), Operand::c32(stride), index);
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if (offset)
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off = bld.sop2(aco_opcode::s_add_i32, bld.def(s1), bld.def(s1, scc), Operand::c32(offset),
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off);
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}
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Temp res = bld.smem(opcode, bld.def(type), list, off);
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