compiler/types: Add a struct_type_is_packed wrapper

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6065>

src/compiler/nir_types.cpp

@@ -360,6 +360,13 @@ glsl_sampler_type_is_array(const struct glsl_type *type)
    return type->sampler_array;
 }
 
+bool
+glsl_struct_type_is_packed(const struct glsl_type *type)
+{
+   assert(glsl_type_is_struct(type));
+   return type->packed;
+}
+
 bool
 glsl_type_is_dual_slot(const struct glsl_type *type)
 {

src/compiler/nir_types.h

@@ -152,6 +152,7 @@ bool glsl_type_is_integer(const struct glsl_type *type);
 bool glsl_type_contains_64bit(const struct glsl_type *type);
 bool glsl_sampler_type_is_shadow(const struct glsl_type *type);
 bool glsl_sampler_type_is_array(const struct glsl_type *type);
+bool glsl_struct_type_is_packed(const struct glsl_type *type);
 bool glsl_contains_atomic(const struct glsl_type *type);
 bool glsl_contains_opaque(const struct glsl_type *type);