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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
41 * \see class lower_packing_builtins_visitor
43 enum lower_packing_builtins_op
{
44 LOWER_PACK_UNPACK_NONE
= 0x0000,
46 LOWER_PACK_SNORM_2x16
= 0x0001,
47 LOWER_UNPACK_SNORM_2x16
= 0x0002,
49 LOWER_PACK_UNORM_2x16
= 0x0004,
50 LOWER_UNPACK_UNORM_2x16
= 0x0008,
52 LOWER_PACK_HALF_2x16
= 0x0010,
53 LOWER_UNPACK_HALF_2x16
= 0x0020,
55 LOWER_PACK_HALF_2x16_TO_SPLIT
= 0x0040,
56 LOWER_UNPACK_HALF_2x16_TO_SPLIT
= 0x0080,
58 LOWER_PACK_SNORM_4x8
= 0x0100,
59 LOWER_UNPACK_SNORM_4x8
= 0x0200,
61 LOWER_PACK_UNORM_4x8
= 0x0400,
62 LOWER_UNPACK_UNORM_4x8
= 0x0800,
65 bool do_common_optimization(exec_list
*ir
, bool linked
,
66 bool uniform_locations_assigned
,
67 unsigned max_unroll_iterations
);
69 bool do_algebraic(exec_list
*instructions
);
70 bool do_constant_folding(exec_list
*instructions
);
71 bool do_constant_variable(exec_list
*instructions
);
72 bool do_constant_variable_unlinked(exec_list
*instructions
);
73 bool do_copy_propagation(exec_list
*instructions
);
74 bool do_copy_propagation_elements(exec_list
*instructions
);
75 bool do_constant_propagation(exec_list
*instructions
);
76 bool do_dead_code(exec_list
*instructions
, bool uniform_locations_assigned
);
77 bool do_dead_code_local(exec_list
*instructions
);
78 bool do_dead_code_unlinked(exec_list
*instructions
);
79 bool do_dead_functions(exec_list
*instructions
);
80 bool do_function_inlining(exec_list
*instructions
);
81 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);
82 bool do_lower_texture_projection(exec_list
*instructions
);
83 bool do_if_simplification(exec_list
*instructions
);
84 bool do_discard_simplification(exec_list
*instructions
);
85 bool lower_if_to_cond_assign(exec_list
*instructions
, unsigned max_depth
= 0);
86 bool do_mat_op_to_vec(exec_list
*instructions
);
87 bool do_noop_swizzle(exec_list
*instructions
);
88 bool do_structure_splitting(exec_list
*instructions
);
89 bool do_swizzle_swizzle(exec_list
*instructions
);
90 bool do_tree_grafting(exec_list
*instructions
);
91 bool do_vec_index_to_cond_assign(exec_list
*instructions
);
92 bool do_vec_index_to_swizzle(exec_list
*instructions
);
93 bool lower_discard(exec_list
*instructions
);
94 void lower_discard_flow(exec_list
*instructions
);
95 bool lower_instructions(exec_list
*instructions
, unsigned what_to_lower
);
96 bool lower_noise(exec_list
*instructions
);
97 bool lower_variable_index_to_cond_assign(exec_list
*instructions
,
98 bool lower_input
, bool lower_output
, bool lower_temp
, bool lower_uniform
);
99 bool lower_quadop_vector(exec_list
*instructions
, bool dont_lower_swz
);
100 bool lower_clip_distance(gl_shader
*shader
);
101 void lower_output_reads(exec_list
*instructions
);
102 bool lower_packing_builtins(exec_list
*instructions
, int op_mask
);
103 void lower_ubo_reference(struct gl_shader
*shader
, exec_list
*instructions
);
104 void lower_packed_varyings(void *mem_ctx
, unsigned location_base
,
105 unsigned locations_used
, ir_variable_mode mode
,
107 bool optimize_redundant_jumps(exec_list
*instructions
);
108 bool optimize_split_arrays(exec_list
*instructions
, bool linked
);
111 compare_index_block(exec_list
*instructions
, ir_variable
*index
,
112 unsigned base
, unsigned components
, void *mem_ctx
);