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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_FLOOR 0x20
38 #define INT_DIV_TO_MUL_RCP 0x40
39 #define BITFIELD_INSERT_TO_BFM_BFI 0x80
40 #define LDEXP_TO_ARITH 0x100
41 #define CARRY_TO_ARITH 0x200
42 #define BORROW_TO_ARITH 0x400
43 #define SAT_TO_CLAMP 0x800
44 #define DOPS_TO_DFRAC 0x1000
45 #define DFREXP_DLDEXP_TO_ARITH 0x2000
48 * \see class lower_packing_builtins_visitor
50 enum lower_packing_builtins_op
{
51 LOWER_PACK_UNPACK_NONE
= 0x0000,
53 LOWER_PACK_SNORM_2x16
= 0x0001,
54 LOWER_UNPACK_SNORM_2x16
= 0x0002,
56 LOWER_PACK_UNORM_2x16
= 0x0004,
57 LOWER_UNPACK_UNORM_2x16
= 0x0008,
59 LOWER_PACK_HALF_2x16
= 0x0010,
60 LOWER_UNPACK_HALF_2x16
= 0x0020,
62 LOWER_PACK_HALF_2x16_TO_SPLIT
= 0x0040,
63 LOWER_UNPACK_HALF_2x16_TO_SPLIT
= 0x0080,
65 LOWER_PACK_SNORM_4x8
= 0x0100,
66 LOWER_UNPACK_SNORM_4x8
= 0x0200,
68 LOWER_PACK_UNORM_4x8
= 0x0400,
69 LOWER_UNPACK_UNORM_4x8
= 0x0800,
71 LOWER_PACK_USE_BFI
= 0x1000,
72 LOWER_PACK_USE_BFE
= 0x2000,
75 bool do_common_optimization(exec_list
*ir
, bool linked
,
76 bool uniform_locations_assigned
,
77 const struct gl_shader_compiler_options
*options
,
78 bool native_integers
);
80 bool do_rebalance_tree(exec_list
*instructions
);
81 bool do_algebraic(exec_list
*instructions
, bool native_integers
,
82 const struct gl_shader_compiler_options
*options
);
83 bool opt_conditional_discard(exec_list
*instructions
);
84 bool do_constant_folding(exec_list
*instructions
);
85 bool do_constant_variable(exec_list
*instructions
);
86 bool do_constant_variable_unlinked(exec_list
*instructions
);
87 bool do_copy_propagation(exec_list
*instructions
);
88 bool do_copy_propagation_elements(exec_list
*instructions
);
89 bool do_constant_propagation(exec_list
*instructions
);
90 void do_dead_builtin_varyings(struct gl_context
*ctx
,
91 gl_shader
*producer
, gl_shader
*consumer
,
92 unsigned num_tfeedback_decls
,
93 class tfeedback_decl
*tfeedback_decls
);
94 bool do_dead_code(exec_list
*instructions
, bool uniform_locations_assigned
);
95 bool do_dead_code_local(exec_list
*instructions
);
96 bool do_dead_code_unlinked(exec_list
*instructions
);
97 bool do_dead_functions(exec_list
*instructions
);
98 bool opt_flip_matrices(exec_list
*instructions
);
99 bool do_function_inlining(exec_list
*instructions
);
100 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);
101 bool do_lower_texture_projection(exec_list
*instructions
);
102 bool do_if_simplification(exec_list
*instructions
);
103 bool opt_flatten_nested_if_blocks(exec_list
*instructions
);
104 bool do_discard_simplification(exec_list
*instructions
);
105 bool lower_if_to_cond_assign(exec_list
*instructions
, unsigned max_depth
= 0);
106 bool do_mat_op_to_vec(exec_list
*instructions
);
107 bool do_minmax_prune(exec_list
*instructions
);
108 bool do_noop_swizzle(exec_list
*instructions
);
109 bool do_structure_splitting(exec_list
*instructions
);
110 bool do_swizzle_swizzle(exec_list
*instructions
);
111 bool do_vectorize(exec_list
*instructions
);
112 bool do_tree_grafting(exec_list
*instructions
);
113 bool do_vec_index_to_cond_assign(exec_list
*instructions
);
114 bool do_vec_index_to_swizzle(exec_list
*instructions
);
115 bool lower_discard(exec_list
*instructions
);
116 void lower_discard_flow(exec_list
*instructions
);
117 bool lower_instructions(exec_list
*instructions
, unsigned what_to_lower
);
118 bool lower_noise(exec_list
*instructions
);
119 bool lower_variable_index_to_cond_assign(gl_shader_stage stage
,
120 exec_list
*instructions
, bool lower_input
, bool lower_output
,
121 bool lower_temp
, bool lower_uniform
);
122 bool lower_quadop_vector(exec_list
*instructions
, bool dont_lower_swz
);
123 bool lower_const_arrays_to_uniforms(exec_list
*instructions
);
124 bool lower_clip_distance(gl_shader
*shader
);
125 void lower_output_reads(unsigned stage
, exec_list
*instructions
);
126 bool lower_packing_builtins(exec_list
*instructions
, int op_mask
);
127 void lower_ubo_reference(struct gl_shader
*shader
);
128 void lower_packed_varyings(void *mem_ctx
,
129 unsigned locations_used
, ir_variable_mode mode
,
130 unsigned gs_input_vertices
, gl_shader
*shader
);
131 bool lower_vector_insert(exec_list
*instructions
, bool lower_nonconstant_index
);
132 void lower_named_interface_blocks(void *mem_ctx
, gl_shader
*shader
);
133 bool optimize_redundant_jumps(exec_list
*instructions
);
134 bool optimize_split_arrays(exec_list
*instructions
, bool linked
);
135 bool lower_offset_arrays(exec_list
*instructions
);
136 void optimize_dead_builtin_variables(exec_list
*instructions
,
137 enum ir_variable_mode other
);
138 bool lower_tess_level(gl_shader
*shader
);
140 bool lower_vertex_id(gl_shader
*shader
);
142 bool lower_subroutine(exec_list
*instructions
, struct _mesa_glsl_parse_state
*state
);
145 compare_index_block(exec_list
*instructions
, ir_variable
*index
,
146 unsigned base
, unsigned components
, void *mem_ctx
);