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26 * \file ir_optimization.h
28 * Prototypes for optimization passes to be called by the compiler and drivers.
31 /* Operations for lower_instructions() */
32 #define SUB_TO_ADD_NEG 0x01
33 #define DIV_TO_MUL_RCP 0x02
34 #define EXP_TO_EXP2 0x04
35 #define POW_TO_EXP2 0x08
36 #define LOG_TO_LOG2 0x10
37 #define MOD_TO_FRACT 0x20
38 #define INT_DIV_TO_MUL_RCP 0x40
40 bool do_common_optimization(exec_list *ir, bool linked,
41 bool uniform_locations_assigned,
42 unsigned max_unroll_iterations);
44 bool do_algebraic(exec_list *instructions);
45 bool do_constant_folding(exec_list *instructions);
46 bool do_constant_variable(exec_list *instructions);
47 bool do_constant_variable_unlinked(exec_list *instructions);
48 bool do_copy_propagation(exec_list *instructions);
49 bool do_copy_propagation_elements(exec_list *instructions);
50 bool do_constant_propagation(exec_list *instructions);
51 bool do_dead_code(exec_list *instructions, bool uniform_locations_assigned);
52 bool do_dead_code_local(exec_list *instructions);
53 bool do_dead_code_unlinked(exec_list *instructions);
54 bool do_dead_functions(exec_list *instructions);
55 bool do_function_inlining(exec_list *instructions);
56 bool do_lower_jumps(exec_list *instructions, bool pull_out_jumps = true, bool lower_sub_return = true, bool lower_main_return = false, bool lower_continue = false, bool lower_break = false);
57 bool do_lower_texture_projection(exec_list *instructions);
58 bool do_if_simplification(exec_list *instructions);
59 bool do_discard_simplification(exec_list *instructions);
60 bool lower_if_to_cond_assign(exec_list *instructions, unsigned max_depth = 0);
61 bool do_mat_op_to_vec(exec_list *instructions);
62 bool do_noop_swizzle(exec_list *instructions);
63 bool do_structure_splitting(exec_list *instructions);
64 bool do_swizzle_swizzle(exec_list *instructions);
65 bool do_tree_grafting(exec_list *instructions);
66 bool do_vec_index_to_cond_assign(exec_list *instructions);
67 bool do_vec_index_to_swizzle(exec_list *instructions);
68 bool lower_discard(exec_list *instructions);
69 void lower_discard_flow(exec_list *instructions);
70 bool lower_instructions(exec_list *instructions, unsigned what_to_lower);
71 bool lower_noise(exec_list *instructions);
72 bool lower_variable_index_to_cond_assign(exec_list *instructions,
73 bool lower_input, bool lower_output, bool lower_temp, bool lower_uniform);
74 bool lower_quadop_vector(exec_list *instructions, bool dont_lower_swz);
75 bool lower_clip_distance(exec_list *instructions);
76 void lower_output_reads(exec_list *instructions);
77 void lower_ubo_reference(struct gl_shader *shader, exec_list *instructions);
78 bool optimize_redundant_jumps(exec_list *instructions);
79 bool optimize_split_arrays(exec_list *instructions, bool linked);
82 compare_index_block(exec_list *instructions, ir_variable *index,
83 unsigned base, unsigned components, void *mem_ctx);