freedreno/ir3: Drop hack to clean up split vars

When the GS lowering was working on store_output intrinsics, we had to
clean up the split vars to avoid getting confused.  Now that we shadow
the output vars instead, there's no confusion and we can drop this
hack.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4562>

diff --git a/src/freedreno/ir3/ir3_nir_lower_tess.c b/src/freedreno/ir3/ir3_nir_lower_tess.c
index 9c398f8..7a30ef0 100644 (file)
--- a/src/freedreno/ir3/ir3_nir_lower_tess.c
+++ b/src/freedreno/ir3/ir3_nir_lower_tess.c
@@ -830,27 +830,6 @@ lower_gs_block(nir_block *block, nir_builder *b, struct state *state)
        }
 }
 
-static void
-clean_up_split_vars(nir_shader *shader, struct exec_list *list)
-{
-       uint32_t components[32] = {};
-
-       nir_foreach_variable (var, list) {
-               uint32_t mask =
-                       ((1 << glsl_get_components(glsl_without_array(var->type))) - 1) << var->data.location_frac;
-               components[var->data.driver_location] |= mask;
-       }
-
-       nir_foreach_variable_safe (var, list) {
-               uint32_t mask =
-                       ((1 << glsl_get_components(glsl_without_array(var->type))) - 1) << var->data.location_frac;
-               bool subset =
-                       (components[var->data.driver_location] | mask) != mask;
-               if (subset)
-                       exec_node_remove(&var->node);
-       }
-}
-
 void
 ir3_nir_lower_gs(nir_shader *shader)
 {
@@ -861,9 +840,6 @@ ir3_nir_lower_gs(nir_shader *shader)
                nir_print_shader(shader, stderr);
        }
 
-       clean_up_split_vars(shader, &shader->inputs);
-       clean_up_split_vars(shader, &shader->outputs);
-
        build_primitive_map(shader, &state.map, &shader->inputs);
 
        /* Create an output var for vertex_flags. This will be shadowed below,