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aco: Use 24-bit multiplication for NGG wave id and thread id.

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Both of them should always fit 24 bits anyway.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4536>
This commit is contained in:
Timur Kristóf 2020-04-23 15:50:56 +02:00 • committed by Marge Bot
parent eafc1e7365
commit 277f37d036
1 changed files with 2 additions and 2 deletions
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4
src/amd/compiler/aco_instruction_selection.cpp
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@ -10614,9 +10614,9 @@ void ngg_emit_nogs_output(isel_context *ctx)
Temp wave_id_in_tg = bld.sop2(aco_opcode::s_bfe_u32, bld.def(s1), bld.def(s1, scc),
get_arg(ctx, ctx->args->merged_wave_info), Operand(24u | (4u << 16)));
Temp thread_id_in_wave = emit_mbcnt(ctx, bld.def(v1));
Temp wave_id_mul = bld.v_mul_imm(bld.def(v1), as_vgpr(ctx, wave_id_in_tg), ctx->program->wave_size);
Temp wave_id_mul = bld.v_mul24_imm(bld.def(v1), as_vgpr(ctx, wave_id_in_tg), ctx->program->wave_size);
Temp thread_id_in_tg = bld.vadd32(bld.def(v1), Operand(wave_id_mul), Operand(thread_id_in_wave));
Temp addr = bld.v_mul_imm(bld.def(v1), thread_id_in_tg, 4u);
Temp addr = bld.v_mul24_imm(bld.def(v1), thread_id_in_tg, 4u);
/* Load primitive ID from LDS. */
prim_id = load_lds(ctx, 4, bld.tmp(v1), addr, 0u, 4u);