ac/llvm,radeonsi: lower nir_load_merged_wave_info_amd in abi

aco does not implement it.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23096>

src/amd/llvm/ac_nir_to_llvm.c

@@ -3208,9 +3208,6 @@ static bool visit_intrinsic(struct ac_nir_context *ctx, nir_intrinsic_instr *ins
    case nir_intrinsic_load_lds_ngg_gs_out_vertex_base_amd:
       result = ctx->abi->intrinsic_load(ctx->abi, instr);
       break;
-   case nir_intrinsic_load_merged_wave_info_amd:
-      result = ac_get_arg(&ctx->ac, ctx->args->merged_wave_info);
-      break;
    case nir_intrinsic_load_ordered_id_amd:
       result = ac_unpack_param(&ctx->ac, ac_get_arg(&ctx->ac, ctx->args->gs_tg_info), 0, 12);
       break;

src/gallium/drivers/radeonsi/si_nir_lower_abi.c

@@ -510,6 +510,9 @@ static bool lower_intrinsic(nir_builder *b, nir_instr *instr, struct lower_abi_s
       replacement = ac_nir_load_arg(b, &args->ac, args->ac.gs_vtx_offset[base]);
       break;
    }
+   case nir_intrinsic_load_merged_wave_info_amd:
+      replacement = ac_nir_load_arg(b, &args->ac, args->ac.merged_wave_info);
+      break;
    default:
       return false;
    }