aco: Fix handling of tess factors.

There is no need to check whether they are written using indirect
indices, because all tess factors should be written to VMEM only
at the end of the shader.

No pipeline db changes.

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/4165>

src/amd/compiler/aco_instruction_selection_setup.cpp

@@ -96,6 +96,8 @@ struct isel_context {
    unsigned num_cull_distances;
 
    /* tessellation information */
+   unsigned tcs_tess_lvl_out_loc;
+   unsigned tcs_tess_lvl_in_loc;
    uint32_t tcs_num_inputs;
    uint32_t tcs_num_patches;
 
@@ -926,6 +928,9 @@ setup_tcs_variables(isel_context *ctx, nir_shader *nir)
    nir_foreach_variable(variable, &nir->outputs) {
       variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot) variable->data.location) * 4;
    }
+
+   ctx->tcs_tess_lvl_out_loc = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_OUTER) * 16u;
+   ctx->tcs_tess_lvl_in_loc = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_INNER) * 16u;
 }
 
 void