2 * Copyright © 2014 Connor Abbott
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
30 #include "util/hash_table.h"
32 #include "GL/gl.h" /* GLenum */
33 #include "util/list.h"
34 #include "util/ralloc.h"
36 #include "util/bitset.h"
37 #include "nir_types.h"
38 #include "glsl/shader_enums.h"
41 #include "nir_opcodes.h"
48 struct gl_shader_program
;
51 #define NIR_TRUE (~0u)
53 /** Defines a cast function
55 * This macro defines a cast function from in_type to out_type where
56 * out_type is some structure type that contains a field of type out_type.
58 * Note that you have to be a bit careful as the generated cast function
61 #define NIR_DEFINE_CAST(name, in_type, out_type, field) \
62 static inline out_type * \
63 name(const in_type *parent) \
65 return exec_node_data(out_type, parent, field); \
68 struct nir_function_overload
;
75 * Description of built-in state associated with a uniform
77 * \sa nir_variable::state_slots
90 nir_var_shader_storage
,
95 * Data stored in an nir_constant
97 union nir_constant_data
{
104 typedef struct nir_constant
{
106 * Value of the constant.
108 * The field used to back the values supplied by the constant is determined
109 * by the type associated with the \c nir_variable. Constants may be
110 * scalars, vectors, or matrices.
112 union nir_constant_data value
;
114 /* Array elements / Structure Fields */
115 struct nir_constant
**elements
;
119 * \brief Layout qualifiers for gl_FragDepth.
121 * The AMD/ARB_conservative_depth extensions allow gl_FragDepth to be redeclared
122 * with a layout qualifier.
125 nir_depth_layout_none
, /**< No depth layout is specified. */
126 nir_depth_layout_any
,
127 nir_depth_layout_greater
,
128 nir_depth_layout_less
,
129 nir_depth_layout_unchanged
133 * Either a uniform, global variable, shader input, or shader output. Based on
134 * ir_variable - it should be easy to translate between the two.
138 struct exec_node node
;
141 * Declared type of the variable
143 const struct glsl_type
*type
;
146 * Declared name of the variable
151 * For variables which satisfy the is_interface_instance() predicate, this
152 * points to an array of integers such that if the ith member of the
153 * interface block is an array, max_ifc_array_access[i] is the maximum
154 * array element of that member that has been accessed. If the ith member
155 * of the interface block is not an array, max_ifc_array_access[i] is
158 * For variables whose type is not an interface block, this pointer is
161 unsigned *max_ifc_array_access
;
163 struct nir_variable_data
{
166 * Is the variable read-only?
168 * This is set for variables declared as \c const, shader inputs,
171 unsigned read_only
:1;
174 unsigned invariant
:1;
177 * Storage class of the variable.
179 * \sa nir_variable_mode
181 nir_variable_mode mode
:4;
184 * Interpolation mode for shader inputs / outputs
186 * \sa glsl_interp_qualifier
188 unsigned interpolation
:2;
191 * \name ARB_fragment_coord_conventions
194 unsigned origin_upper_left
:1;
195 unsigned pixel_center_integer
:1;
199 * Was the location explicitly set in the shader?
201 * If the location is explicitly set in the shader, it \b cannot be changed
202 * by the linker or by the API (e.g., calls to \c glBindAttribLocation have
205 unsigned explicit_location
:1;
206 unsigned explicit_index
:1;
209 * Was an initial binding explicitly set in the shader?
211 * If so, constant_initializer contains an integer nir_constant
212 * representing the initial binding point.
214 unsigned explicit_binding
:1;
217 * Does this variable have an initializer?
219 * This is used by the linker to cross-validiate initializers of global
222 unsigned has_initializer
:1;
225 * Is this variable a generic output or input that has not yet been matched
226 * up to a variable in another stage of the pipeline?
228 * This is used by the linker as scratch storage while assigning locations
229 * to generic inputs and outputs.
231 unsigned is_unmatched_generic_inout
:1;
234 * If non-zero, then this variable may be packed along with other variables
235 * into a single varying slot, so this offset should be applied when
236 * accessing components. For example, an offset of 1 means that the x
237 * component of this variable is actually stored in component y of the
238 * location specified by \c location.
240 unsigned location_frac
:2;
243 * Non-zero if this variable was created by lowering a named interface
244 * block which was not an array.
246 * Note that this variable and \c from_named_ifc_block_array will never
249 unsigned from_named_ifc_block_nonarray
:1;
252 * Non-zero if this variable was created by lowering a named interface
253 * block which was an array.
255 * Note that this variable and \c from_named_ifc_block_nonarray will never
258 unsigned from_named_ifc_block_array
:1;
261 * \brief Layout qualifier for gl_FragDepth.
263 * This is not equal to \c ir_depth_layout_none if and only if this
264 * variable is \c gl_FragDepth and a layout qualifier is specified.
266 nir_depth_layout depth_layout
;
269 * Storage location of the base of this variable
271 * The precise meaning of this field depends on the nature of the variable.
273 * - Vertex shader input: one of the values from \c gl_vert_attrib.
274 * - Vertex shader output: one of the values from \c gl_varying_slot.
275 * - Geometry shader input: one of the values from \c gl_varying_slot.
276 * - Geometry shader output: one of the values from \c gl_varying_slot.
277 * - Fragment shader input: one of the values from \c gl_varying_slot.
278 * - Fragment shader output: one of the values from \c gl_frag_result.
279 * - Uniforms: Per-stage uniform slot number for default uniform block.
280 * - Uniforms: Index within the uniform block definition for UBO members.
281 * - Other: This field is not currently used.
283 * If the variable is a uniform, shader input, or shader output, and the
284 * slot has not been assigned, the value will be -1.
289 * The actual location of the variable in the IR. Only valid for inputs
292 unsigned int driver_location
;
295 * output index for dual source blending.
300 * Descriptor set binding for sampler or UBO.
305 * Initial binding point for a sampler or UBO.
307 * For array types, this represents the binding point for the first element.
312 * Location an atomic counter is stored at.
315 unsigned buffer_index
;
320 * ARB_shader_image_load_store qualifiers.
323 bool read_only
; /**< "readonly" qualifier. */
324 bool write_only
; /**< "writeonly" qualifier. */
329 /** Image internal format if specified explicitly, otherwise GL_NONE. */
334 * Highest element accessed with a constant expression array index
336 * Not used for non-array variables.
338 unsigned max_array_access
;
343 * Built-in state that backs this uniform
345 * Once set at variable creation, \c state_slots must remain invariant.
346 * This is because, ideally, this array would be shared by all clones of
347 * this variable in the IR tree. In other words, we'd really like for it
348 * to be a fly-weight.
350 * If the variable is not a uniform, \c num_state_slots will be zero and
351 * \c state_slots will be \c NULL.
354 unsigned num_state_slots
; /**< Number of state slots used */
355 nir_state_slot
*state_slots
; /**< State descriptors. */
359 * Constant expression assigned in the initializer of the variable
361 nir_constant
*constant_initializer
;
364 * For variables that are in an interface block or are an instance of an
365 * interface block, this is the \c GLSL_TYPE_INTERFACE type for that block.
367 * \sa ir_variable::location
369 const struct glsl_type
*interface_type
;
373 struct exec_node node
;
375 unsigned num_components
; /** < number of vector components */
376 unsigned num_array_elems
; /** < size of array (0 for no array) */
378 /** generic register index. */
381 /** only for debug purposes, can be NULL */
384 /** whether this register is local (per-function) or global (per-shader) */
388 * If this flag is set to true, then accessing channels >= num_components
389 * is well-defined, and simply spills over to the next array element. This
390 * is useful for backends that can do per-component accessing, in
391 * particular scalar backends. By setting this flag and making
392 * num_components equal to 1, structures can be packed tightly into
393 * registers and then registers can be accessed per-component to get to
394 * each structure member, even if it crosses vec4 boundaries.
398 /** set of nir_instr's where this register is used (read from) */
399 struct list_head uses
;
401 /** set of nir_instr's where this register is defined (written to) */
402 struct list_head defs
;
404 /** set of nir_if's where this register is used as a condition */
405 struct list_head if_uses
;
412 nir_instr_type_intrinsic
,
413 nir_instr_type_load_const
,
415 nir_instr_type_ssa_undef
,
417 nir_instr_type_parallel_copy
,
420 typedef struct nir_instr
{
421 struct exec_node node
;
423 struct nir_block
*block
;
425 /* A temporary for optimization and analysis passes to use for storing
426 * flags. For instance, DCE uses this to store the "dead/live" info.
431 static inline nir_instr
*
432 nir_instr_next(nir_instr
*instr
)
434 struct exec_node
*next
= exec_node_get_next(&instr
->node
);
435 if (exec_node_is_tail_sentinel(next
))
438 return exec_node_data(nir_instr
, next
, node
);
441 static inline nir_instr
*
442 nir_instr_prev(nir_instr
*instr
)
444 struct exec_node
*prev
= exec_node_get_prev(&instr
->node
);
445 if (exec_node_is_head_sentinel(prev
))
448 return exec_node_data(nir_instr
, prev
, node
);
452 nir_instr_is_first(nir_instr
*instr
)
454 return exec_node_is_head_sentinel(exec_node_get_prev(&instr
->node
));
458 nir_instr_is_last(nir_instr
*instr
)
460 return exec_node_is_tail_sentinel(exec_node_get_next(&instr
->node
));
464 /** for debugging only, can be NULL */
467 /** generic SSA definition index. */
470 /** Index into the live_in and live_out bitfields */
473 nir_instr
*parent_instr
;
475 /** set of nir_instr's where this register is used (read from) */
476 struct list_head uses
;
478 /** set of nir_if's where this register is used as a condition */
479 struct list_head if_uses
;
481 uint8_t num_components
;
488 struct nir_src
*indirect
; /** < NULL for no indirect offset */
489 unsigned base_offset
;
491 /* TODO use-def chain goes here */
495 nir_instr
*parent_instr
;
496 struct list_head def_link
;
499 struct nir_src
*indirect
; /** < NULL for no indirect offset */
500 unsigned base_offset
;
502 /* TODO def-use chain goes here */
507 typedef struct nir_src
{
509 nir_instr
*parent_instr
;
510 struct nir_if
*parent_if
;
513 struct list_head use_link
;
524 # define NIR_SRC_INIT nir_src()
526 # define NIR_SRC_INIT (nir_src) { { NULL } }
529 #define nir_foreach_use(reg_or_ssa_def, src) \
530 list_for_each_entry(nir_src, src, &(reg_or_ssa_def)->uses, use_link)
532 #define nir_foreach_use_safe(reg_or_ssa_def, src) \
533 list_for_each_entry_safe(nir_src, src, &(reg_or_ssa_def)->uses, use_link)
535 #define nir_foreach_if_use(reg_or_ssa_def, src) \
536 list_for_each_entry(nir_src, src, &(reg_or_ssa_def)->if_uses, use_link)
538 #define nir_foreach_if_use_safe(reg_or_ssa_def, src) \
539 list_for_each_entry_safe(nir_src, src, &(reg_or_ssa_def)->if_uses, use_link)
551 # define NIR_DEST_INIT nir_dest()
553 # define NIR_DEST_INIT (nir_dest) { { { NULL } } }
556 #define nir_foreach_def(reg, dest) \
557 list_for_each_entry(nir_dest, dest, &(reg)->defs, reg.def_link)
559 #define nir_foreach_def_safe(reg, dest) \
560 list_for_each_entry_safe(nir_dest, dest, &(reg)->defs, reg.def_link)
562 static inline nir_src
563 nir_src_for_ssa(nir_ssa_def
*def
)
565 nir_src src
= NIR_SRC_INIT
;
573 static inline nir_src
574 nir_src_for_reg(nir_register
*reg
)
576 nir_src src
= NIR_SRC_INIT
;
580 src
.reg
.indirect
= NULL
;
581 src
.reg
.base_offset
= 0;
586 static inline nir_dest
587 nir_dest_for_reg(nir_register
*reg
)
589 nir_dest dest
= NIR_DEST_INIT
;
596 void nir_src_copy(nir_src
*dest
, const nir_src
*src
, void *mem_ctx
);
597 void nir_dest_copy(nir_dest
*dest
, const nir_dest
*src
, void *mem_ctx
);
603 * \name input modifiers
607 * For inputs interpreted as floating point, flips the sign bit. For
608 * inputs interpreted as integers, performs the two's complement negation.
613 * Clears the sign bit for floating point values, and computes the integer
614 * absolute value for integers. Note that the negate modifier acts after
615 * the absolute value modifier, therefore if both are set then all inputs
616 * will become negative.
622 * For each input component, says which component of the register it is
623 * chosen from. Note that which elements of the swizzle are used and which
624 * are ignored are based on the write mask for most opcodes - for example,
625 * a statement like "foo.xzw = bar.zyx" would have a writemask of 1101b and
626 * a swizzle of {2, x, 1, 0} where x means "don't care."
635 * \name saturate output modifier
637 * Only valid for opcodes that output floating-point numbers. Clamps the
638 * output to between 0.0 and 1.0 inclusive.
643 unsigned write_mask
: 4; /* ignored if dest.is_ssa is true */
646 void nir_alu_src_copy(nir_alu_src
*dest
, const nir_alu_src
*src
, void *mem_ctx
);
647 void nir_alu_dest_copy(nir_alu_dest
*dest
, const nir_alu_dest
*src
,
651 nir_type_invalid
= 0, /* Not a valid type */
659 NIR_OP_IS_COMMUTATIVE
= (1 << 0),
660 NIR_OP_IS_ASSOCIATIVE
= (1 << 1),
661 } nir_op_algebraic_property
;
669 * The number of components in the output
671 * If non-zero, this is the size of the output and input sizes are
672 * explicitly given; swizzle and writemask are still in effect, but if
673 * the output component is masked out, then the input component may
676 * If zero, the opcode acts in the standard, per-component manner; the
677 * operation is performed on each component (except the ones that are
678 * masked out) with the input being taken from the input swizzle for
681 * The size of some of the inputs may be given (i.e. non-zero) even
682 * though output_size is zero; in that case, the inputs with a zero
683 * size act per-component, while the inputs with non-zero size don't.
685 unsigned output_size
;
688 * The type of vector that the instruction outputs. Note that the
689 * staurate modifier is only allowed on outputs with the float type.
692 nir_alu_type output_type
;
695 * The number of components in each input
697 unsigned input_sizes
[4];
700 * The type of vector that each input takes. Note that negate and
701 * absolute value are only allowed on inputs with int or float type and
702 * behave differently on the two.
704 nir_alu_type input_types
[4];
706 nir_op_algebraic_property algebraic_properties
;
709 extern const nir_op_info nir_op_infos
[nir_num_opcodes
];
711 typedef struct nir_alu_instr
{
718 /* is this source channel used? */
720 nir_alu_instr_channel_used(nir_alu_instr
*instr
, unsigned src
, unsigned channel
)
722 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
723 return channel
< nir_op_infos
[instr
->op
].input_sizes
[src
];
725 return (instr
->dest
.write_mask
>> channel
) & 1;
729 * For instructions whose destinations are SSA, get the number of channels
732 static inline unsigned
733 nir_ssa_alu_instr_src_components(nir_alu_instr
*instr
, unsigned src
)
735 assert(instr
->dest
.dest
.is_ssa
);
737 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
738 return nir_op_infos
[instr
->op
].input_sizes
[src
];
740 return instr
->dest
.dest
.ssa
.num_components
;
745 nir_deref_type_array
,
746 nir_deref_type_struct
749 typedef struct nir_deref
{
750 nir_deref_type deref_type
;
751 struct nir_deref
*child
;
752 const struct glsl_type
*type
;
761 /* This enum describes how the array is referenced. If the deref is
762 * direct then the base_offset is used. If the deref is indirect then then
763 * offset is given by base_offset + indirect. If the deref is a wildcard
764 * then the deref refers to all of the elements of the array at the same
765 * time. Wildcard dereferences are only ever allowed in copy_var
766 * intrinsics and the source and destination derefs must have matching
770 nir_deref_array_type_direct
,
771 nir_deref_array_type_indirect
,
772 nir_deref_array_type_wildcard
,
773 } nir_deref_array_type
;
778 nir_deref_array_type deref_array_type
;
779 unsigned base_offset
;
789 NIR_DEFINE_CAST(nir_deref_as_var
, nir_deref
, nir_deref_var
, deref
)
790 NIR_DEFINE_CAST(nir_deref_as_array
, nir_deref
, nir_deref_array
, deref
)
791 NIR_DEFINE_CAST(nir_deref_as_struct
, nir_deref
, nir_deref_struct
, deref
)
793 /** Returns the tail of a deref chain */
794 static inline nir_deref
*
795 nir_deref_tail(nir_deref
*deref
)
798 deref
= deref
->child
;
806 nir_deref_var
**params
;
807 nir_deref_var
*return_deref
;
809 struct nir_function_overload
*callee
;
812 #define INTRINSIC(name, num_srcs, src_components, has_dest, dest_components, \
813 num_variables, num_indices, flags) \
814 nir_intrinsic_##name,
816 #define LAST_INTRINSIC(name) nir_last_intrinsic = nir_intrinsic_##name,
819 #include "nir_intrinsics.h"
820 nir_num_intrinsics
= nir_last_intrinsic
+ 1
824 #undef LAST_INTRINSIC
826 /** Represents an intrinsic
828 * An intrinsic is an instruction type for handling things that are
829 * more-or-less regular operations but don't just consume and produce SSA
830 * values like ALU operations do. Intrinsics are not for things that have
831 * special semantic meaning such as phi nodes and parallel copies.
832 * Examples of intrinsics include variable load/store operations, system
833 * value loads, and the like. Even though texturing more-or-less falls
834 * under this category, texturing is its own instruction type because
835 * trying to represent texturing with intrinsics would lead to a
836 * combinatorial explosion of intrinsic opcodes.
838 * By having a single instruction type for handling a lot of different
839 * cases, optimization passes can look for intrinsics and, for the most
840 * part, completely ignore them. Each intrinsic type also has a few
841 * possible flags that govern whether or not they can be reordered or
842 * eliminated. That way passes like dead code elimination can still work
843 * on intrisics without understanding the meaning of each.
845 * Each intrinsic has some number of constant indices, some number of
846 * variables, and some number of sources. What these sources, variables,
847 * and indices mean depends on the intrinsic and is documented with the
848 * intrinsic declaration in nir_intrinsics.h. Intrinsics and texture
849 * instructions are the only types of instruction that can operate on
855 nir_intrinsic_op intrinsic
;
859 /** number of components if this is a vectorized intrinsic
861 * Similarly to ALU operations, some intrinsics are vectorized.
862 * An intrinsic is vectorized if nir_intrinsic_infos.dest_components == 0.
863 * For vectorized intrinsics, the num_components field specifies the
864 * number of destination components and the number of source components
865 * for all sources with nir_intrinsic_infos.src_components[i] == 0.
867 uint8_t num_components
;
871 nir_deref_var
*variables
[2];
874 } nir_intrinsic_instr
;
877 * \name NIR intrinsics semantic flags
879 * information about what the compiler can do with the intrinsics.
881 * \sa nir_intrinsic_info::flags
885 * whether the intrinsic can be safely eliminated if none of its output
886 * value is not being used.
888 NIR_INTRINSIC_CAN_ELIMINATE
= (1 << 0),
891 * Whether the intrinsic can be reordered with respect to any other
892 * intrinsic, i.e. whether the only reordering dependencies of the
893 * intrinsic are due to the register reads/writes.
895 NIR_INTRINSIC_CAN_REORDER
= (1 << 1),
896 } nir_intrinsic_semantic_flag
;
898 #define NIR_INTRINSIC_MAX_INPUTS 4
903 unsigned num_srcs
; /** < number of register/SSA inputs */
905 /** number of components of each input register
907 * If this value is 0, the number of components is given by the
908 * num_components field of nir_intrinsic_instr.
910 unsigned src_components
[NIR_INTRINSIC_MAX_INPUTS
];
914 /** number of components of the output register
916 * If this value is 0, the number of components is given by the
917 * num_components field of nir_intrinsic_instr.
919 unsigned dest_components
;
921 /** the number of inputs/outputs that are variables */
922 unsigned num_variables
;
924 /** the number of constant indices used by the intrinsic */
925 unsigned num_indices
;
927 /** semantic flags for calls to this intrinsic */
928 nir_intrinsic_semantic_flag flags
;
929 } nir_intrinsic_info
;
931 extern const nir_intrinsic_info nir_intrinsic_infos
[nir_num_intrinsics
];
934 * \group texture information
936 * This gives semantic information about textures which is useful to the
937 * frontend, the backend, and lowering passes, but not the optimizer.
942 nir_tex_src_projector
,
943 nir_tex_src_comparitor
, /* shadow comparitor */
947 nir_tex_src_ms_index
, /* MSAA sample index */
950 nir_tex_src_sampler_offset
, /* < dynamically uniform indirect offset */
951 nir_num_tex_src_types
956 nir_tex_src_type src_type
;
960 nir_texop_tex
, /**< Regular texture look-up */
961 nir_texop_txb
, /**< Texture look-up with LOD bias */
962 nir_texop_txl
, /**< Texture look-up with explicit LOD */
963 nir_texop_txd
, /**< Texture look-up with partial derivatvies */
964 nir_texop_txf
, /**< Texel fetch with explicit LOD */
965 nir_texop_txf_ms
, /**< Multisample texture fetch */
966 nir_texop_txs
, /**< Texture size */
967 nir_texop_lod
, /**< Texture lod query */
968 nir_texop_tg4
, /**< Texture gather */
969 nir_texop_query_levels
/**< Texture levels query */
975 enum glsl_sampler_dim sampler_dim
;
976 nir_alu_type dest_type
;
981 unsigned num_srcs
, coord_components
;
982 bool is_array
, is_shadow
;
985 * If is_shadow is true, whether this is the old-style shadow that outputs 4
986 * components or the new-style shadow that outputs 1 component.
988 bool is_new_style_shadow
;
990 /* constant offset - must be 0 if the offset source is used */
993 /* gather component selector */
994 unsigned component
: 2;
996 /* The descriptor set containing this texture */
997 unsigned sampler_set
;
999 /** The sampler index
1001 * If this texture instruction has a nir_tex_src_sampler_offset source,
1002 * then the sampler index is given by sampler_index + sampler_offset.
1004 unsigned sampler_index
;
1006 /** The size of the sampler array or 0 if it's not an array */
1007 unsigned sampler_array_size
;
1009 nir_deref_var
*sampler
; /* if this is NULL, use sampler_index instead */
1012 static inline unsigned
1013 nir_tex_instr_dest_size(nir_tex_instr
*instr
)
1015 switch (instr
->op
) {
1016 case nir_texop_txs
: {
1018 switch (instr
->sampler_dim
) {
1019 case GLSL_SAMPLER_DIM_1D
:
1020 case GLSL_SAMPLER_DIM_BUF
:
1023 case GLSL_SAMPLER_DIM_2D
:
1024 case GLSL_SAMPLER_DIM_CUBE
:
1025 case GLSL_SAMPLER_DIM_MS
:
1026 case GLSL_SAMPLER_DIM_RECT
:
1027 case GLSL_SAMPLER_DIM_EXTERNAL
:
1030 case GLSL_SAMPLER_DIM_3D
:
1034 unreachable("not reached");
1036 if (instr
->is_array
)
1044 case nir_texop_query_levels
:
1048 if (instr
->is_shadow
&& instr
->is_new_style_shadow
)
1055 static inline unsigned
1056 nir_tex_instr_src_size(nir_tex_instr
*instr
, unsigned src
)
1058 if (instr
->src
[src
].src_type
== nir_tex_src_coord
)
1059 return instr
->coord_components
;
1062 if (instr
->src
[src
].src_type
== nir_tex_src_offset
||
1063 instr
->src
[src
].src_type
== nir_tex_src_ddx
||
1064 instr
->src
[src
].src_type
== nir_tex_src_ddy
) {
1065 if (instr
->is_array
)
1066 return instr
->coord_components
- 1;
1068 return instr
->coord_components
;
1075 nir_tex_instr_src_index(nir_tex_instr
*instr
, nir_tex_src_type type
)
1077 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++)
1078 if (instr
->src
[i
].src_type
== type
)
1095 nir_const_value value
;
1098 } nir_load_const_instr
;
1111 /* creates a new SSA variable in an undefined state */
1116 } nir_ssa_undef_instr
;
1119 struct exec_node node
;
1121 /* The predecessor block corresponding to this source */
1122 struct nir_block
*pred
;
1127 #define nir_foreach_phi_src(phi, entry) \
1128 foreach_list_typed(nir_phi_src, entry, node, &(phi)->srcs)
1129 #define nir_foreach_phi_src_safe(phi, entry) \
1130 foreach_list_typed_safe(nir_phi_src, entry, node, &(phi)->srcs)
1135 struct exec_list srcs
; /** < list of nir_phi_src */
1141 struct exec_node node
;
1144 } nir_parallel_copy_entry
;
1146 #define nir_foreach_parallel_copy_entry(pcopy, entry) \
1147 foreach_list_typed(nir_parallel_copy_entry, entry, node, &(pcopy)->entries)
1152 /* A list of nir_parallel_copy_entry's. The sources of all of the
1153 * entries are copied to the corresponding destinations "in parallel".
1154 * In other words, if we have two entries: a -> b and b -> a, the values
1157 struct exec_list entries
;
1158 } nir_parallel_copy_instr
;
1160 NIR_DEFINE_CAST(nir_instr_as_alu
, nir_instr
, nir_alu_instr
, instr
)
1161 NIR_DEFINE_CAST(nir_instr_as_call
, nir_instr
, nir_call_instr
, instr
)
1162 NIR_DEFINE_CAST(nir_instr_as_jump
, nir_instr
, nir_jump_instr
, instr
)
1163 NIR_DEFINE_CAST(nir_instr_as_tex
, nir_instr
, nir_tex_instr
, instr
)
1164 NIR_DEFINE_CAST(nir_instr_as_intrinsic
, nir_instr
, nir_intrinsic_instr
, instr
)
1165 NIR_DEFINE_CAST(nir_instr_as_load_const
, nir_instr
, nir_load_const_instr
, instr
)
1166 NIR_DEFINE_CAST(nir_instr_as_ssa_undef
, nir_instr
, nir_ssa_undef_instr
, instr
)
1167 NIR_DEFINE_CAST(nir_instr_as_phi
, nir_instr
, nir_phi_instr
, instr
)
1168 NIR_DEFINE_CAST(nir_instr_as_parallel_copy
, nir_instr
,
1169 nir_parallel_copy_instr
, instr
)
1174 * Control flow consists of a tree of control flow nodes, which include
1175 * if-statements and loops. The leaves of the tree are basic blocks, lists of
1176 * instructions that always run start-to-finish. Each basic block also keeps
1177 * track of its successors (blocks which may run immediately after the current
1178 * block) and predecessors (blocks which could have run immediately before the
1179 * current block). Each function also has a start block and an end block which
1180 * all return statements point to (which is always empty). Together, all the
1181 * blocks with their predecessors and successors make up the control flow
1182 * graph (CFG) of the function. There are helpers that modify the tree of
1183 * control flow nodes while modifying the CFG appropriately; these should be
1184 * used instead of modifying the tree directly.
1191 nir_cf_node_function
1194 typedef struct nir_cf_node
{
1195 struct exec_node node
;
1196 nir_cf_node_type type
;
1197 struct nir_cf_node
*parent
;
1200 typedef struct nir_block
{
1201 nir_cf_node cf_node
;
1203 struct exec_list instr_list
; /** < list of nir_instr */
1205 /** generic block index; generated by nir_index_blocks */
1209 * Each block can only have up to 2 successors, so we put them in a simple
1210 * array - no need for anything more complicated.
1212 struct nir_block
*successors
[2];
1214 /* Set of nir_block predecessors in the CFG */
1215 struct set
*predecessors
;
1218 * this node's immediate dominator in the dominance tree - set to NULL for
1221 struct nir_block
*imm_dom
;
1223 /* This node's children in the dominance tree */
1224 unsigned num_dom_children
;
1225 struct nir_block
**dom_children
;
1227 /* Set of nir_block's on the dominance frontier of this block */
1228 struct set
*dom_frontier
;
1231 * These two indices have the property that dom_{pre,post}_index for each
1232 * child of this block in the dominance tree will always be between
1233 * dom_pre_index and dom_post_index for this block, which makes testing if
1234 * a given block is dominated by another block an O(1) operation.
1236 unsigned dom_pre_index
, dom_post_index
;
1238 /* live in and out for this block; used for liveness analysis */
1239 BITSET_WORD
*live_in
;
1240 BITSET_WORD
*live_out
;
1243 static inline nir_instr
*
1244 nir_block_first_instr(nir_block
*block
)
1246 struct exec_node
*head
= exec_list_get_head(&block
->instr_list
);
1247 return exec_node_data(nir_instr
, head
, node
);
1250 static inline nir_instr
*
1251 nir_block_last_instr(nir_block
*block
)
1253 struct exec_node
*tail
= exec_list_get_tail(&block
->instr_list
);
1254 return exec_node_data(nir_instr
, tail
, node
);
1257 #define nir_foreach_instr(block, instr) \
1258 foreach_list_typed(nir_instr, instr, node, &(block)->instr_list)
1259 #define nir_foreach_instr_reverse(block, instr) \
1260 foreach_list_typed_reverse(nir_instr, instr, node, &(block)->instr_list)
1261 #define nir_foreach_instr_safe(block, instr) \
1262 foreach_list_typed_safe(nir_instr, instr, node, &(block)->instr_list)
1263 #define nir_foreach_instr_safe_reverse(block, instr) \
1264 foreach_list_typed_safe_reverse(nir_instr, instr, node, &(block)->instr_list)
1266 typedef struct nir_if
{
1267 nir_cf_node cf_node
;
1270 struct exec_list then_list
; /** < list of nir_cf_node */
1271 struct exec_list else_list
; /** < list of nir_cf_node */
1274 static inline nir_cf_node
*
1275 nir_if_first_then_node(nir_if
*if_stmt
)
1277 struct exec_node
*head
= exec_list_get_head(&if_stmt
->then_list
);
1278 return exec_node_data(nir_cf_node
, head
, node
);
1281 static inline nir_cf_node
*
1282 nir_if_last_then_node(nir_if
*if_stmt
)
1284 struct exec_node
*tail
= exec_list_get_tail(&if_stmt
->then_list
);
1285 return exec_node_data(nir_cf_node
, tail
, node
);
1288 static inline nir_cf_node
*
1289 nir_if_first_else_node(nir_if
*if_stmt
)
1291 struct exec_node
*head
= exec_list_get_head(&if_stmt
->else_list
);
1292 return exec_node_data(nir_cf_node
, head
, node
);
1295 static inline nir_cf_node
*
1296 nir_if_last_else_node(nir_if
*if_stmt
)
1298 struct exec_node
*tail
= exec_list_get_tail(&if_stmt
->else_list
);
1299 return exec_node_data(nir_cf_node
, tail
, node
);
1303 nir_cf_node cf_node
;
1305 struct exec_list body
; /** < list of nir_cf_node */
1308 static inline nir_cf_node
*
1309 nir_loop_first_cf_node(nir_loop
*loop
)
1311 return exec_node_data(nir_cf_node
, exec_list_get_head(&loop
->body
), node
);
1314 static inline nir_cf_node
*
1315 nir_loop_last_cf_node(nir_loop
*loop
)
1317 return exec_node_data(nir_cf_node
, exec_list_get_tail(&loop
->body
), node
);
1321 * Various bits of metadata that can may be created or required by
1322 * optimization and analysis passes
1325 nir_metadata_none
= 0x0,
1326 nir_metadata_block_index
= 0x1,
1327 nir_metadata_dominance
= 0x2,
1328 nir_metadata_live_variables
= 0x4,
1332 nir_cf_node cf_node
;
1334 /** pointer to the overload of which this is an implementation */
1335 struct nir_function_overload
*overload
;
1337 struct exec_list body
; /** < list of nir_cf_node */
1339 nir_block
*end_block
;
1341 /** list for all local variables in the function */
1342 struct exec_list locals
;
1344 /** array of variables used as parameters */
1345 unsigned num_params
;
1346 nir_variable
**params
;
1348 /** variable used to hold the result of the function */
1349 nir_variable
*return_var
;
1351 /** list of local registers in the function */
1352 struct exec_list registers
;
1354 /** next available local register index */
1357 /** next available SSA value index */
1360 /* total number of basic blocks, only valid when block_index_dirty = false */
1361 unsigned num_blocks
;
1363 nir_metadata valid_metadata
;
1364 } nir_function_impl
;
1366 static inline nir_block
*
1367 nir_start_block(nir_function_impl
*impl
)
1369 return (nir_block
*) exec_list_get_head(&impl
->body
);
1372 static inline nir_cf_node
*
1373 nir_cf_node_next(nir_cf_node
*node
)
1375 struct exec_node
*next
= exec_node_get_next(&node
->node
);
1376 if (exec_node_is_tail_sentinel(next
))
1379 return exec_node_data(nir_cf_node
, next
, node
);
1382 static inline nir_cf_node
*
1383 nir_cf_node_prev(nir_cf_node
*node
)
1385 struct exec_node
*prev
= exec_node_get_prev(&node
->node
);
1386 if (exec_node_is_head_sentinel(prev
))
1389 return exec_node_data(nir_cf_node
, prev
, node
);
1393 nir_cf_node_is_first(const nir_cf_node
*node
)
1395 return exec_node_is_head_sentinel(node
->node
.prev
);
1399 nir_cf_node_is_last(const nir_cf_node
*node
)
1401 return exec_node_is_tail_sentinel(node
->node
.next
);
1404 NIR_DEFINE_CAST(nir_cf_node_as_block
, nir_cf_node
, nir_block
, cf_node
)
1405 NIR_DEFINE_CAST(nir_cf_node_as_if
, nir_cf_node
, nir_if
, cf_node
)
1406 NIR_DEFINE_CAST(nir_cf_node_as_loop
, nir_cf_node
, nir_loop
, cf_node
)
1407 NIR_DEFINE_CAST(nir_cf_node_as_function
, nir_cf_node
, nir_function_impl
, cf_node
)
1412 nir_parameter_inout
,
1413 } nir_parameter_type
;
1416 nir_parameter_type param_type
;
1417 const struct glsl_type
*type
;
1420 typedef struct nir_function_overload
{
1421 struct exec_node node
;
1423 unsigned num_params
;
1424 nir_parameter
*params
;
1425 const struct glsl_type
*return_type
;
1427 nir_function_impl
*impl
; /** < NULL if the overload is only declared yet */
1429 /** pointer to the function of which this is an overload */
1430 struct nir_function
*function
;
1431 } nir_function_overload
;
1433 typedef struct nir_function
{
1434 struct exec_node node
;
1436 struct exec_list overload_list
; /** < list of nir_function_overload */
1438 struct nir_shader
*shader
;
1441 #define nir_function_first_overload(func) \
1442 exec_node_data(nir_function_overload, \
1443 exec_list_get_head(&(func)->overload_list), node)
1445 typedef struct nir_shader_compiler_options
{
1452 /** lowers fneg and ineg to fsub and isub. */
1454 /** lowers fsub and isub to fadd+fneg and iadd+ineg. */
1457 /* lower {slt,sge,seq,sne} to {flt,fge,feq,fne} + b2f: */
1461 * Does the driver support real 32-bit integers? (Otherwise, integers
1462 * are simulated by floats.)
1464 bool native_integers
;
1465 } nir_shader_compiler_options
;
1467 typedef struct nir_shader
{
1468 /** hash table of name -> uniform nir_variable */
1469 struct exec_list uniforms
;
1471 /** hash table of name -> input nir_variable */
1472 struct exec_list inputs
;
1474 /** hash table of name -> output nir_variable */
1475 struct exec_list outputs
;
1477 /** Set of driver-specific options for the shader.
1479 * The memory for the options is expected to be kept in a single static
1480 * copy by the driver.
1482 const struct nir_shader_compiler_options
*options
;
1484 /** list of global variables in the shader */
1485 struct exec_list globals
;
1487 /** list of system value variables in the shader */
1488 struct exec_list system_values
;
1490 struct exec_list functions
; /** < list of nir_function */
1492 /** list of global register in the shader */
1493 struct exec_list registers
;
1495 /** next available global register index */
1499 * the highest index a load_input_*, load_uniform_*, etc. intrinsic can
1502 unsigned num_inputs
, num_uniforms
, num_outputs
;
1504 /** The shader stage, such as MESA_SHADER_VERTEX. */
1505 gl_shader_stage stage
;
1508 #define nir_foreach_overload(shader, overload) \
1509 foreach_list_typed(nir_function, func, node, &(shader)->functions) \
1510 foreach_list_typed(nir_function_overload, overload, node, \
1511 &(func)->overload_list)
1513 nir_shader
*nir_shader_create(void *mem_ctx
,
1514 gl_shader_stage stage
,
1515 const nir_shader_compiler_options
*options
);
1517 /** creates a register, including assigning it an index and adding it to the list */
1518 nir_register
*nir_global_reg_create(nir_shader
*shader
);
1520 nir_register
*nir_local_reg_create(nir_function_impl
*impl
);
1522 void nir_reg_remove(nir_register
*reg
);
1524 /** creates a function and adds it to the shader's list of functions */
1525 nir_function
*nir_function_create(nir_shader
*shader
, const char *name
);
1527 /** creates a null function returning null */
1528 nir_function_overload
*nir_function_overload_create(nir_function
*func
);
1530 nir_function_impl
*nir_function_impl_create(nir_function_overload
*func
);
1532 nir_block
*nir_block_create(void *mem_ctx
);
1533 nir_if
*nir_if_create(void *mem_ctx
);
1534 nir_loop
*nir_loop_create(void *mem_ctx
);
1536 nir_function_impl
*nir_cf_node_get_function(nir_cf_node
*node
);
1538 /** requests that the given pieces of metadata be generated */
1539 void nir_metadata_require(nir_function_impl
*impl
, nir_metadata required
);
1540 /** dirties all but the preserved metadata */
1541 void nir_metadata_preserve(nir_function_impl
*impl
, nir_metadata preserved
);
1543 /** creates an instruction with default swizzle/writemask/etc. with NULL registers */
1544 nir_alu_instr
*nir_alu_instr_create(nir_shader
*shader
, nir_op op
);
1546 nir_jump_instr
*nir_jump_instr_create(nir_shader
*shader
, nir_jump_type type
);
1548 nir_load_const_instr
*nir_load_const_instr_create(nir_shader
*shader
,
1549 unsigned num_components
);
1551 nir_intrinsic_instr
*nir_intrinsic_instr_create(nir_shader
*shader
,
1552 nir_intrinsic_op op
);
1554 nir_call_instr
*nir_call_instr_create(nir_shader
*shader
,
1555 nir_function_overload
*callee
);
1557 nir_tex_instr
*nir_tex_instr_create(nir_shader
*shader
, unsigned num_srcs
);
1559 nir_phi_instr
*nir_phi_instr_create(nir_shader
*shader
);
1561 nir_parallel_copy_instr
*nir_parallel_copy_instr_create(nir_shader
*shader
);
1563 nir_ssa_undef_instr
*nir_ssa_undef_instr_create(nir_shader
*shader
,
1564 unsigned num_components
);
1566 nir_deref_var
*nir_deref_var_create(void *mem_ctx
, nir_variable
*var
);
1567 nir_deref_array
*nir_deref_array_create(void *mem_ctx
);
1568 nir_deref_struct
*nir_deref_struct_create(void *mem_ctx
, unsigned field_index
);
1570 nir_deref
*nir_copy_deref(void *mem_ctx
, nir_deref
*deref
);
1572 nir_load_const_instr
*
1573 nir_deref_get_const_initializer_load(nir_shader
*shader
, nir_deref_var
*deref
);
1576 * NIR Cursors and Instruction Insertion API
1579 * A tiny struct representing a point to insert/extract instructions or
1580 * control flow nodes. Helps reduce the combinatorial explosion of possible
1581 * points to insert/extract.
1583 * \sa nir_control_flow.h
1586 nir_cursor_before_block
,
1587 nir_cursor_after_block
,
1588 nir_cursor_before_instr
,
1589 nir_cursor_after_instr
,
1590 } nir_cursor_option
;
1593 nir_cursor_option option
;
1600 static inline nir_block
*
1601 nir_cursor_current_block(nir_cursor cursor
)
1603 if (cursor
.option
== nir_cursor_before_instr
||
1604 cursor
.option
== nir_cursor_after_instr
) {
1605 return cursor
.instr
->block
;
1607 return cursor
.block
;
1611 static inline nir_cursor
1612 nir_before_block(nir_block
*block
)
1615 cursor
.option
= nir_cursor_before_block
;
1616 cursor
.block
= block
;
1620 static inline nir_cursor
1621 nir_after_block(nir_block
*block
)
1624 cursor
.option
= nir_cursor_after_block
;
1625 cursor
.block
= block
;
1629 static inline nir_cursor
1630 nir_before_instr(nir_instr
*instr
)
1633 cursor
.option
= nir_cursor_before_instr
;
1634 cursor
.instr
= instr
;
1638 static inline nir_cursor
1639 nir_after_instr(nir_instr
*instr
)
1642 cursor
.option
= nir_cursor_after_instr
;
1643 cursor
.instr
= instr
;
1647 static inline nir_cursor
1648 nir_after_block_before_jump(nir_block
*block
)
1650 nir_instr
*last_instr
= nir_block_last_instr(block
);
1651 if (last_instr
&& last_instr
->type
== nir_instr_type_jump
) {
1652 return nir_before_instr(last_instr
);
1654 return nir_after_block(block
);
1658 static inline nir_cursor
1659 nir_before_cf_node(nir_cf_node
*node
)
1661 if (node
->type
== nir_cf_node_block
)
1662 return nir_before_block(nir_cf_node_as_block(node
));
1664 return nir_after_block(nir_cf_node_as_block(nir_cf_node_prev(node
)));
1667 static inline nir_cursor
1668 nir_after_cf_node(nir_cf_node
*node
)
1670 if (node
->type
== nir_cf_node_block
)
1671 return nir_after_block(nir_cf_node_as_block(node
));
1673 return nir_before_block(nir_cf_node_as_block(nir_cf_node_next(node
)));
1676 static inline nir_cursor
1677 nir_before_cf_list(struct exec_list
*cf_list
)
1679 nir_cf_node
*first_node
= exec_node_data(nir_cf_node
,
1680 exec_list_get_head(cf_list
), node
);
1681 return nir_before_cf_node(first_node
);
1684 static inline nir_cursor
1685 nir_after_cf_list(struct exec_list
*cf_list
)
1687 nir_cf_node
*last_node
= exec_node_data(nir_cf_node
,
1688 exec_list_get_tail(cf_list
), node
);
1689 return nir_after_cf_node(last_node
);
1693 * Insert a NIR instruction at the given cursor.
1695 * Note: This does not update the cursor.
1697 void nir_instr_insert(nir_cursor cursor
, nir_instr
*instr
);
1700 nir_instr_insert_before(nir_instr
*instr
, nir_instr
*before
)
1702 nir_instr_insert(nir_before_instr(instr
), before
);
1706 nir_instr_insert_after(nir_instr
*instr
, nir_instr
*after
)
1708 nir_instr_insert(nir_after_instr(instr
), after
);
1712 nir_instr_insert_before_block(nir_block
*block
, nir_instr
*before
)
1714 nir_instr_insert(nir_before_block(block
), before
);
1718 nir_instr_insert_after_block(nir_block
*block
, nir_instr
*after
)
1720 nir_instr_insert(nir_after_block(block
), after
);
1724 nir_instr_insert_before_cf(nir_cf_node
*node
, nir_instr
*before
)
1726 nir_instr_insert(nir_before_cf_node(node
), before
);
1730 nir_instr_insert_after_cf(nir_cf_node
*node
, nir_instr
*after
)
1732 nir_instr_insert(nir_after_cf_node(node
), after
);
1736 nir_instr_insert_before_cf_list(struct exec_list
*list
, nir_instr
*before
)
1738 nir_instr_insert(nir_before_cf_list(list
), before
);
1742 nir_instr_insert_after_cf_list(struct exec_list
*list
, nir_instr
*after
)
1744 nir_instr_insert(nir_after_cf_list(list
), after
);
1747 void nir_instr_remove(nir_instr
*instr
);
1751 typedef bool (*nir_foreach_ssa_def_cb
)(nir_ssa_def
*def
, void *state
);
1752 typedef bool (*nir_foreach_dest_cb
)(nir_dest
*dest
, void *state
);
1753 typedef bool (*nir_foreach_src_cb
)(nir_src
*src
, void *state
);
1754 bool nir_foreach_ssa_def(nir_instr
*instr
, nir_foreach_ssa_def_cb cb
,
1756 bool nir_foreach_dest(nir_instr
*instr
, nir_foreach_dest_cb cb
, void *state
);
1757 bool nir_foreach_src(nir_instr
*instr
, nir_foreach_src_cb cb
, void *state
);
1759 nir_const_value
*nir_src_as_const_value(nir_src src
);
1760 bool nir_srcs_equal(nir_src src1
, nir_src src2
);
1761 void nir_instr_rewrite_src(nir_instr
*instr
, nir_src
*src
, nir_src new_src
);
1762 void nir_instr_move_src(nir_instr
*dest_instr
, nir_src
*dest
, nir_src
*src
);
1763 void nir_if_rewrite_condition(nir_if
*if_stmt
, nir_src new_src
);
1765 void nir_ssa_dest_init(nir_instr
*instr
, nir_dest
*dest
,
1766 unsigned num_components
, const char *name
);
1767 void nir_ssa_def_init(nir_instr
*instr
, nir_ssa_def
*def
,
1768 unsigned num_components
, const char *name
);
1769 void nir_ssa_def_rewrite_uses(nir_ssa_def
*def
, nir_src new_src
, void *mem_ctx
);
1771 /* visits basic blocks in source-code order */
1772 typedef bool (*nir_foreach_block_cb
)(nir_block
*block
, void *state
);
1773 bool nir_foreach_block(nir_function_impl
*impl
, nir_foreach_block_cb cb
,
1775 bool nir_foreach_block_reverse(nir_function_impl
*impl
, nir_foreach_block_cb cb
,
1778 /* If the following CF node is an if, this function returns that if.
1779 * Otherwise, it returns NULL.
1781 nir_if
*nir_block_get_following_if(nir_block
*block
);
1783 void nir_index_local_regs(nir_function_impl
*impl
);
1784 void nir_index_global_regs(nir_shader
*shader
);
1785 void nir_index_ssa_defs(nir_function_impl
*impl
);
1787 void nir_index_blocks(nir_function_impl
*impl
);
1789 void nir_print_shader(nir_shader
*shader
, FILE *fp
);
1790 void nir_print_instr(const nir_instr
*instr
, FILE *fp
);
1793 void nir_validate_shader(nir_shader
*shader
);
1795 static inline void nir_validate_shader(nir_shader
*shader
) { (void) shader
; }
1798 void nir_calc_dominance_impl(nir_function_impl
*impl
);
1799 void nir_calc_dominance(nir_shader
*shader
);
1801 nir_block
*nir_dominance_lca(nir_block
*b1
, nir_block
*b2
);
1802 bool nir_block_dominates(nir_block
*parent
, nir_block
*child
);
1804 void nir_dump_dom_tree_impl(nir_function_impl
*impl
, FILE *fp
);
1805 void nir_dump_dom_tree(nir_shader
*shader
, FILE *fp
);
1807 void nir_dump_dom_frontier_impl(nir_function_impl
*impl
, FILE *fp
);
1808 void nir_dump_dom_frontier(nir_shader
*shader
, FILE *fp
);
1810 void nir_dump_cfg_impl(nir_function_impl
*impl
, FILE *fp
);
1811 void nir_dump_cfg(nir_shader
*shader
, FILE *fp
);
1813 void nir_split_var_copies(nir_shader
*shader
);
1815 void nir_lower_var_copy_instr(nir_intrinsic_instr
*copy
, void *mem_ctx
);
1816 void nir_lower_var_copies(nir_shader
*shader
);
1818 void nir_lower_global_vars_to_local(nir_shader
*shader
);
1820 void nir_lower_locals_to_regs(nir_shader
*shader
);
1822 void nir_lower_outputs_to_temporaries(nir_shader
*shader
);
1824 void nir_assign_var_locations(struct exec_list
*var_list
,
1826 int (*type_size
)(const struct glsl_type
*));
1828 void nir_lower_io(nir_shader
*shader
,
1829 int (*type_size
)(const struct glsl_type
*));
1830 void nir_lower_vars_to_ssa(nir_shader
*shader
);
1832 void nir_remove_dead_variables(nir_shader
*shader
);
1834 void nir_lower_vec_to_movs(nir_shader
*shader
);
1835 void nir_lower_alu_to_scalar(nir_shader
*shader
);
1836 void nir_lower_load_const_to_scalar(nir_shader
*shader
);
1838 void nir_lower_phis_to_scalar(nir_shader
*shader
);
1840 void nir_lower_samplers(nir_shader
*shader
,
1841 const struct gl_shader_program
*shader_program
);
1842 void nir_lower_samplers_for_vk(nir_shader
*shader
);
1844 void nir_lower_system_values(nir_shader
*shader
);
1845 void nir_lower_tex_projector(nir_shader
*shader
);
1846 void nir_lower_idiv(nir_shader
*shader
);
1848 void nir_lower_atomics(nir_shader
*shader
);
1849 void nir_lower_to_source_mods(nir_shader
*shader
);
1851 void nir_normalize_cubemap_coords(nir_shader
*shader
);
1853 void nir_live_variables_impl(nir_function_impl
*impl
);
1854 bool nir_ssa_defs_interfere(nir_ssa_def
*a
, nir_ssa_def
*b
);
1856 void nir_convert_to_ssa_impl(nir_function_impl
*impl
);
1857 void nir_convert_to_ssa(nir_shader
*shader
);
1859 /* If phi_webs_only is true, only convert SSA values involved in phi nodes to
1860 * registers. If false, convert all values (even those not involved in a phi
1861 * node) to registers.
1863 void nir_convert_from_ssa(nir_shader
*shader
, bool phi_webs_only
);
1865 bool nir_opt_algebraic(nir_shader
*shader
);
1866 bool nir_opt_algebraic_late(nir_shader
*shader
);
1867 bool nir_opt_constant_folding(nir_shader
*shader
);
1869 bool nir_opt_global_to_local(nir_shader
*shader
);
1871 bool nir_copy_prop_impl(nir_function_impl
*impl
);
1872 bool nir_copy_prop(nir_shader
*shader
);
1874 bool nir_opt_cse(nir_shader
*shader
);
1876 bool nir_opt_dce_impl(nir_function_impl
*impl
);
1877 bool nir_opt_dce(nir_shader
*shader
);
1879 void nir_opt_gcm(nir_shader
*shader
);
1881 bool nir_opt_peephole_select(nir_shader
*shader
);
1882 bool nir_opt_peephole_ffma(nir_shader
*shader
);
1884 bool nir_opt_remove_phis(nir_shader
*shader
);
1886 bool nir_opt_undef(nir_shader
*shader
);
1888 void nir_sweep(nir_shader
*shader
);