+/**
+ * \see class lower_packing_builtins_visitor
+ */
+enum lower_packing_builtins_op {
+ LOWER_PACK_UNPACK_NONE = 0x0000,
+
+ LOWER_PACK_SNORM_2x16 = 0x0001,
+ LOWER_UNPACK_SNORM_2x16 = 0x0002,
+
+ LOWER_PACK_UNORM_2x16 = 0x0004,
+ LOWER_UNPACK_UNORM_2x16 = 0x0008,
+
+ LOWER_PACK_HALF_2x16 = 0x0010,
+ LOWER_UNPACK_HALF_2x16 = 0x0020,
+
+ LOWER_PACK_HALF_2x16_TO_SPLIT = 0x0040,
+ LOWER_UNPACK_HALF_2x16_TO_SPLIT = 0x0080,
+
+ LOWER_PACK_SNORM_4x8 = 0x0100,
+ LOWER_UNPACK_SNORM_4x8 = 0x0200,
+
+ LOWER_PACK_UNORM_4x8 = 0x0400,
+ LOWER_UNPACK_UNORM_4x8 = 0x0800
+};
+
+bool do_common_optimization(exec_list *ir, bool linked,
+ bool uniform_locations_assigned,
+ const struct gl_shader_compiler_options *options,
+ bool native_integers);
+
+bool do_rebalance_tree(exec_list *instructions);
+bool do_algebraic(exec_list *instructions, bool native_integers,
+ const struct gl_shader_compiler_options *options);
+bool opt_conditional_discard(exec_list *instructions);