2 * Copyright (c) 2013 Rob Clark <robdclark@gmail.com>
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 FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 #include "util/u_debug.h"
31 #include "util/list.h"
33 #include "instr-a3xx.h"
34 #include "disasm.h" /* TODO move 'enum shader_t' somewhere else.. */
36 /* low level intermediate representation of an adreno shader program */
40 struct ir3_instruction
;
46 uint16_t instrs_count
; /* expanded to account for rpt's */
47 /* NOTE: max_reg, etc, does not include registers not touched
48 * by the shader (ie. vertex fetched via VFD_DECODE but not
51 int8_t max_reg
; /* highest GPR # used by shader */
58 IR3_REG_CONST
= 0x001,
59 IR3_REG_IMMED
= 0x002,
61 IR3_REG_RELATIV
= 0x008,
63 /* Most instructions, it seems, can do float abs/neg but not
64 * integer. The CP pass needs to know what is intended (int or
65 * float) in order to do the right thing. For this reason the
66 * abs/neg flags are split out into float and int variants. In
67 * addition, .b (bitwise) operations, the negate is actually a
68 * bitwise not, so split that out into a new flag to make it
77 IR3_REG_POS_INF
= 0x800,
78 /* (ei) flag, end-input? Set on last bary, presumably to signal
79 * that the shader needs no more input:
82 /* meta-flags, for intermediate stages of IR, ie.
83 * before register assignment is done:
85 IR3_REG_SSA
= 0x2000, /* 'instr' is ptr to assigning instr */
86 IR3_REG_ARRAY
= 0x4000,
87 IR3_REG_PHI_SRC
= 0x8000, /* phi src, regs[0]->instr points to phi */
92 * the component is in the low two bits of the reg #, so
93 * rN.x becomes: (N << 2) | x
107 /* For IR3_REG_SSA, src registers contain ptr back to assigning
110 * For IR3_REG_ARRAY, the pointer is back to the last dependent
111 * array access (although the net effect is the same, it points
112 * back to a previous instruction that we depend on).
114 struct ir3_instruction
*instr
;
117 /* used for cat5 instructions, but also for internal/IR level
118 * tracking of what registers are read/written by an instruction.
119 * wrmask may be a bad name since it is used to represent both
120 * src and dst that touch multiple adjacent registers.
123 /* for relative addressing, 32bits for array size is too small,
124 * but otoh we don't need to deal with disjoint sets, so instead
125 * use a simple size field (number of scalar components).
131 struct ir3_instruction
{
132 struct ir3_block
*block
;
135 /* (sy) flag is set on first instruction, and after sample
136 * instructions (probably just on RAW hazard).
138 IR3_INSTR_SY
= 0x001,
139 /* (ss) flag is set on first instruction, and first instruction
140 * to depend on the result of "long" instructions (RAW hazard):
142 * rcp, rsq, log2, exp2, sin, cos, sqrt
144 * It seems to synchronize until all in-flight instructions are
145 * completed, for example:
148 * add.f hr2.z, (neg)hr2.z, hc0.y
149 * mul.f hr2.w, (neg)hr2.y, (neg)hr2.y
152 * mad.f16 hr2.w, hr2.z, hr2.z, hr2.w
154 * mad.f16 hr2.w, (neg)hr0.w, (neg)hr0.w, hr2.w
155 * (ss)(rpt2)mul.f hr1.x, (r)hr1.x, hr1.w
156 * (rpt2)mul.f hr0.x, (neg)(r)hr0.x, hr2.x
158 * The last mul.f does not have (ss) set, presumably because the
159 * (ss) on the previous instruction does the job.
161 * The blob driver also seems to set it on WAR hazards, although
162 * not really clear if this is needed or just blob compiler being
163 * sloppy. So far I haven't found a case where removing the (ss)
164 * causes problems for WAR hazard, but I could just be getting
168 * (ss)(rpt2)mad.f32 r3.y, (r)c9.x, r1.x, (r)r3.z
171 IR3_INSTR_SS
= 0x002,
172 /* (jp) flag is set on jump targets:
174 IR3_INSTR_JP
= 0x004,
175 IR3_INSTR_UL
= 0x008,
176 IR3_INSTR_3D
= 0x010,
181 IR3_INSTR_S2EN
= 0x200,
183 /* meta-flags, for intermediate stages of IR, ie.
184 * before register assignment is done:
186 IR3_INSTR_MARK
= 0x1000,
187 IR3_INSTR_UNUSED
= 0x2000,
194 struct ir3_register
**regs
;
200 struct ir3_block
*target
;
203 type_t src_type
, dst_type
;
225 /* for meta-instructions, just used to hold extra data
226 * before instruction scheduling, etc
229 int off
; /* component/offset */
232 /* used to temporarily hold reference to nir_phi_instr
233 * until we resolve the phi srcs
238 struct ir3_block
*block
;
242 /* transient values used during various algorithms: */
244 /* The instruction depth is the max dependency distance to output.
246 * You can also think of it as the "cost", if we did any sort of
247 * optimization for register footprint. Ie. a value that is just
248 * result of moving a const to a reg would have a low cost, so to
249 * it could make sense to duplicate the instruction at various
250 * points where the result is needed to reduce register footprint.
253 /* When we get to the RA stage, we no longer need depth, but
254 * we do need instruction's position/name:
262 /* used for per-pass extra instruction data.
266 /* Used during CP and RA stages. For fanin and shader inputs/
267 * outputs where we need a sequence of consecutive registers,
268 * keep track of each src instructions left (ie 'n-1') and right
269 * (ie 'n+1') neighbor. The front-end must insert enough mov's
270 * to ensure that each instruction has at most one left and at
271 * most one right neighbor. During the copy-propagation pass,
272 * we only remove mov's when we can preserve this constraint.
273 * And during the RA stage, we use the neighbor information to
274 * allocate a block of registers in one shot.
276 * TODO: maybe just add something like:
277 * struct ir3_instruction_ref {
278 * struct ir3_instruction *instr;
282 * Or can we get away without the refcnt stuff? It seems like
283 * it should be overkill.. the problem is if, potentially after
284 * already eliminating some mov's, if you have a single mov that
285 * needs to be grouped with it's neighbors in two different
286 * places (ex. shader output and a fanin).
289 struct ir3_instruction
*left
, *right
;
290 uint16_t left_cnt
, right_cnt
;
293 /* an instruction can reference at most one address register amongst
294 * it's src/dst registers. Beyond that, you need to insert mov's.
296 * NOTE: do not write this directly, use ir3_instr_set_address()
298 struct ir3_instruction
*address
;
300 /* Entry in ir3_block's instruction list: */
301 struct list_head node
;
308 static inline struct ir3_instruction
*
309 ir3_neighbor_first(struct ir3_instruction
*instr
)
311 while (instr
->cp
.left
)
312 instr
= instr
->cp
.left
;
316 static inline int ir3_neighbor_count(struct ir3_instruction
*instr
)
320 debug_assert(!instr
->cp
.left
);
322 while (instr
->cp
.right
) {
324 instr
= instr
->cp
.right
;
330 struct ir3_heap_chunk
;
333 struct ir3_compiler
*compiler
;
335 unsigned ninputs
, noutputs
;
336 struct ir3_instruction
**inputs
;
337 struct ir3_instruction
**outputs
;
339 /* Track bary.f (and ldlv) instructions.. this is needed in
340 * scheduling to ensure that all varying fetches happen before
341 * any potential kill instructions. The hw gets grumpy if all
342 * threads in a group are killed before the last bary.f gets
343 * a chance to signal end of input (ei).
345 unsigned baryfs_count
, baryfs_sz
;
346 struct ir3_instruction
**baryfs
;
348 /* Track all indirect instructions (read and write). To avoid
349 * deadlock scenario where an address register gets scheduled,
350 * but other dependent src instructions cannot be scheduled due
351 * to dependency on a *different* address register value, the
352 * scheduler needs to ensure that all dependencies other than
353 * the instruction other than the address register are scheduled
354 * before the one that writes the address register. Having a
355 * convenient list of instructions that reference some address
356 * register simplifies this.
358 unsigned indirects_count
, indirects_sz
;
359 struct ir3_instruction
**indirects
;
360 /* and same for instructions that consume predicate register: */
361 unsigned predicates_count
, predicates_sz
;
362 struct ir3_instruction
**predicates
;
364 /* Track instructions which do not write a register but other-
365 * wise must not be discarded (such as kill, stg, etc)
367 unsigned keeps_count
, keeps_sz
;
368 struct ir3_instruction
**keeps
;
370 /* List of blocks: */
371 struct list_head block_list
;
373 /* List of ir3_array's: */
374 struct list_head array_list
;
377 struct ir3_heap_chunk
*chunk
;
380 typedef struct nir_variable nir_variable
;
383 struct list_head node
;
389 /* We track the last write and last access (read or write) to
390 * setup dependencies on instructions that read or write the
391 * array. Reads can be re-ordered wrt. other reads, but should
392 * not be re-ordered wrt. to writes. Writes cannot be reordered
393 * wrt. any other access to the array.
395 * So array reads depend on last write, and array writes depend
396 * on the last access.
398 struct ir3_instruction
*last_write
, *last_access
;
400 /* extra stuff used in RA pass: */
401 unsigned base
; /* base vreg name */
402 unsigned reg
; /* base physical reg */
403 uint16_t start_ip
, end_ip
;
406 struct ir3_array
* ir3_lookup_array(struct ir3
*ir
, unsigned id
);
408 typedef struct nir_block nir_block
;
411 struct list_head node
;
416 struct list_head instr_list
; /* list of ir3_instruction */
418 /* each block has either one or two successors.. in case of
419 * two successors, 'condition' decides which one to follow.
420 * A block preceding an if/else has two successors.
422 struct ir3_instruction
*condition
;
423 struct ir3_block
*successors
[2];
425 uint16_t start_ip
, end_ip
;
427 /* used for per-pass extra block data. Mainly used right
428 * now in RA step to track livein/liveout.
437 struct ir3
* ir3_create(struct ir3_compiler
*compiler
,
438 unsigned nin
, unsigned nout
);
439 void ir3_destroy(struct ir3
*shader
);
440 void * ir3_assemble(struct ir3
*shader
,
441 struct ir3_info
*info
, uint32_t gpu_id
);
442 void * ir3_alloc(struct ir3
*shader
, int sz
);
444 struct ir3_block
* ir3_block_create(struct ir3
*shader
);
446 struct ir3_instruction
* ir3_instr_create(struct ir3_block
*block
,
447 int category
, opc_t opc
);
448 struct ir3_instruction
* ir3_instr_create2(struct ir3_block
*block
,
449 int category
, opc_t opc
, int nreg
);
450 struct ir3_instruction
* ir3_instr_clone(struct ir3_instruction
*instr
);
451 const char *ir3_instr_name(struct ir3_instruction
*instr
);
453 struct ir3_register
* ir3_reg_create(struct ir3_instruction
*instr
,
455 struct ir3_register
* ir3_reg_clone(struct ir3
*shader
,
456 struct ir3_register
*reg
);
458 void ir3_instr_set_address(struct ir3_instruction
*instr
,
459 struct ir3_instruction
*addr
);
461 static inline bool ir3_instr_check_mark(struct ir3_instruction
*instr
)
463 if (instr
->flags
& IR3_INSTR_MARK
)
464 return true; /* already visited */
465 instr
->flags
|= IR3_INSTR_MARK
;
469 void ir3_block_clear_mark(struct ir3_block
*block
);
470 void ir3_clear_mark(struct ir3
*shader
);
472 unsigned ir3_count_instructions(struct ir3
*ir
);
474 static inline int ir3_instr_regno(struct ir3_instruction
*instr
,
475 struct ir3_register
*reg
)
478 for (i
= 0; i
< instr
->regs_count
; i
++)
479 if (reg
== instr
->regs
[i
])
485 #define MAX_ARRAYS 16
493 static inline uint32_t regid(int num
, int comp
)
495 return (num
<< 2) | (comp
& 0x3);
498 static inline uint32_t reg_num(struct ir3_register
*reg
)
500 return reg
->num
>> 2;
503 static inline uint32_t reg_comp(struct ir3_register
*reg
)
505 return reg
->num
& 0x3;
508 static inline bool is_flow(struct ir3_instruction
*instr
)
510 return (opc_cat(instr
->opc
) == 0);
513 static inline bool is_kill(struct ir3_instruction
*instr
)
515 return instr
->opc
== OPC_KILL
;
518 static inline bool is_nop(struct ir3_instruction
*instr
)
520 return instr
->opc
== OPC_NOP
;
523 /* Is it a non-transformative (ie. not type changing) mov? This can
524 * also include absneg.s/absneg.f, which for the most part can be
525 * treated as a mov (single src argument).
527 static inline bool is_same_type_mov(struct ir3_instruction
*instr
)
529 struct ir3_register
*dst
= instr
->regs
[0];
531 /* mov's that write to a0.x or p0.x are special: */
532 if (dst
->num
== regid(REG_P0
, 0))
534 if (dst
->num
== regid(REG_A0
, 0))
537 if (dst
->flags
& (IR3_REG_RELATIV
| IR3_REG_ARRAY
))
540 switch (instr
->opc
) {
542 return instr
->cat1
.src_type
== instr
->cat1
.dst_type
;
551 static inline bool is_alu(struct ir3_instruction
*instr
)
553 return (1 <= opc_cat(instr
->opc
)) && (opc_cat(instr
->opc
) <= 3);
556 static inline bool is_sfu(struct ir3_instruction
*instr
)
558 return (opc_cat(instr
->opc
) == 4);
561 static inline bool is_tex(struct ir3_instruction
*instr
)
563 return (opc_cat(instr
->opc
) == 5);
566 static inline bool is_mem(struct ir3_instruction
*instr
)
568 return (opc_cat(instr
->opc
) == 6);
572 is_store(struct ir3_instruction
*instr
)
574 /* these instructions, the "destination" register is
575 * actually a source, the address to store to.
577 switch (instr
->opc
) {
590 static inline bool is_load(struct ir3_instruction
*instr
)
592 switch (instr
->opc
) {
600 /* probably some others too.. */
607 static inline bool is_input(struct ir3_instruction
*instr
)
609 /* in some cases, ldlv is used to fetch varying without
610 * interpolation.. fortunately inloc is the first src
611 * register in either case
613 switch (instr
->opc
) {
622 static inline bool is_meta(struct ir3_instruction
*instr
)
624 /* TODO how should we count PHI (and maybe fan-in/out) which
625 * might actually contribute some instructions to the final
628 return (opc_cat(instr
->opc
) == -1);
631 static inline bool writes_addr(struct ir3_instruction
*instr
)
633 if (instr
->regs_count
> 0) {
634 struct ir3_register
*dst
= instr
->regs
[0];
635 return reg_num(dst
) == REG_A0
;
640 static inline bool writes_pred(struct ir3_instruction
*instr
)
642 if (instr
->regs_count
> 0) {
643 struct ir3_register
*dst
= instr
->regs
[0];
644 return reg_num(dst
) == REG_P0
;
649 /* returns defining instruction for reg */
650 /* TODO better name */
651 static inline struct ir3_instruction
*ssa(struct ir3_register
*reg
)
653 if (reg
->flags
& (IR3_REG_SSA
| IR3_REG_ARRAY
)) {
654 debug_assert(!(reg
->instr
&& (reg
->instr
->flags
& IR3_INSTR_UNUSED
)));
660 static inline bool conflicts(struct ir3_instruction
*a
,
661 struct ir3_instruction
*b
)
663 return (a
&& b
) && (a
!= b
);
666 static inline bool reg_gpr(struct ir3_register
*r
)
668 if (r
->flags
& (IR3_REG_CONST
| IR3_REG_IMMED
))
670 if ((reg_num(r
) == REG_A0
) || (reg_num(r
) == REG_P0
))
675 static inline type_t
half_type(type_t type
)
678 case TYPE_F32
: return TYPE_F16
;
679 case TYPE_U32
: return TYPE_U16
;
680 case TYPE_S32
: return TYPE_S16
;
691 /* some cat2 instructions (ie. those which are not float) can embed an
694 static inline bool ir3_cat2_int(opc_t opc
)
735 /* map cat2 instruction to valid abs/neg flags: */
736 static inline unsigned ir3_cat2_absneg(opc_t opc
)
753 return IR3_REG_FABS
| IR3_REG_FNEG
;
774 return IR3_REG_SABS
| IR3_REG_SNEG
;
795 /* map cat3 instructions to valid abs/neg flags: */
796 static inline unsigned ir3_cat3_absneg(opc_t opc
)
815 /* neg *may* work on 3rd src.. */
825 #define array_insert(arr, val) do { \
826 if (arr ## _count == arr ## _sz) { \
827 arr ## _sz = MAX2(2 * arr ## _sz, 16); \
828 arr = realloc(arr, arr ## _sz * sizeof(arr[0])); \
830 arr[arr ##_count++] = val; \
833 /* iterator for an instructions's sources (reg), also returns src #: */
834 #define foreach_src_n(__srcreg, __n, __instr) \
835 if ((__instr)->regs_count) \
836 for (unsigned __cnt = (__instr)->regs_count - 1, __n = 0; __n < __cnt; __n++) \
837 if ((__srcreg = (__instr)->regs[__n + 1]))
839 /* iterator for an instructions's sources (reg): */
840 #define foreach_src(__srcreg, __instr) \
841 foreach_src_n(__srcreg, __i, __instr)
843 static inline unsigned __ssa_src_cnt(struct ir3_instruction
*instr
)
846 return instr
->regs_count
+ 1;
847 return instr
->regs_count
;
850 static inline struct ir3_instruction
* __ssa_src_n(struct ir3_instruction
*instr
, unsigned n
)
852 if (n
== (instr
->regs_count
+ 0))
853 return instr
->address
;
854 return ssa(instr
->regs
[n
]);
857 #define __src_cnt(__instr) ((__instr)->address ? (__instr)->regs_count : (__instr)->regs_count - 1)
859 /* iterator for an instruction's SSA sources (instr), also returns src #: */
860 #define foreach_ssa_src_n(__srcinst, __n, __instr) \
861 if ((__instr)->regs_count) \
862 for (unsigned __cnt = __ssa_src_cnt(__instr), __n = 0; __n < __cnt; __n++) \
863 if ((__srcinst = __ssa_src_n(__instr, __n)))
865 /* iterator for an instruction's SSA sources (instr): */
866 #define foreach_ssa_src(__srcinst, __instr) \
867 foreach_ssa_src_n(__srcinst, __i, __instr)
871 void ir3_print(struct ir3
*ir
);
872 void ir3_print_instr(struct ir3_instruction
*instr
);
874 /* depth calculation: */
875 int ir3_delayslots(struct ir3_instruction
*assigner
,
876 struct ir3_instruction
*consumer
, unsigned n
);
877 void ir3_insert_by_depth(struct ir3_instruction
*instr
, struct list_head
*list
);
878 void ir3_depth(struct ir3
*ir
);
880 /* copy-propagate: */
881 void ir3_cp(struct ir3
*ir
);
883 /* group neighbors and insert mov's to resolve conflicts: */
884 void ir3_group(struct ir3
*ir
);
887 int ir3_sched(struct ir3
*ir
);
889 /* register assignment: */
890 struct ir3_ra_reg_set
* ir3_ra_alloc_reg_set(void *memctx
);
891 int ir3_ra(struct ir3
*ir3
, enum shader_t type
,
892 bool frag_coord
, bool frag_face
);
895 void ir3_legalize(struct ir3
*ir
, bool *has_samp
, int *max_bary
);
897 /* ************************************************************************* */
898 /* instruction helpers */
900 static inline struct ir3_instruction
*
901 ir3_MOV(struct ir3_block
*block
, struct ir3_instruction
*src
, type_t type
)
903 struct ir3_instruction
*instr
=
904 ir3_instr_create(block
, 1, OPC_MOV
);
905 ir3_reg_create(instr
, 0, 0); /* dst */
906 if (src
->regs
[0]->flags
& IR3_REG_ARRAY
) {
907 struct ir3_register
*src_reg
=
908 ir3_reg_create(instr
, 0, IR3_REG_ARRAY
);
909 src_reg
->array
= src
->regs
[0]->array
;
910 src_reg
->instr
= src
;
912 ir3_reg_create(instr
, 0, IR3_REG_SSA
)->instr
= src
;
914 debug_assert(!(src
->regs
[0]->flags
& IR3_REG_RELATIV
));
915 instr
->cat1
.src_type
= type
;
916 instr
->cat1
.dst_type
= type
;
920 static inline struct ir3_instruction
*
921 ir3_COV(struct ir3_block
*block
, struct ir3_instruction
*src
,
922 type_t src_type
, type_t dst_type
)
924 struct ir3_instruction
*instr
=
925 ir3_instr_create(block
, 1, OPC_MOV
);
926 ir3_reg_create(instr
, 0, 0); /* dst */
927 ir3_reg_create(instr
, 0, IR3_REG_SSA
)->instr
= src
;
928 instr
->cat1
.src_type
= src_type
;
929 instr
->cat1
.dst_type
= dst_type
;
930 debug_assert(!(src
->regs
[0]->flags
& IR3_REG_ARRAY
));
934 static inline struct ir3_instruction
*
935 ir3_NOP(struct ir3_block
*block
)
937 return ir3_instr_create(block
, 0, OPC_NOP
);
940 #define INSTR0(CAT, name) \
941 static inline struct ir3_instruction * \
942 ir3_##name(struct ir3_block *block) \
944 struct ir3_instruction *instr = \
945 ir3_instr_create(block, CAT, OPC_##name); \
949 #define INSTR1(CAT, name) \
950 static inline struct ir3_instruction * \
951 ir3_##name(struct ir3_block *block, \
952 struct ir3_instruction *a, unsigned aflags) \
954 struct ir3_instruction *instr = \
955 ir3_instr_create(block, CAT, OPC_##name); \
956 ir3_reg_create(instr, 0, 0); /* dst */ \
957 ir3_reg_create(instr, 0, IR3_REG_SSA | aflags)->instr = a; \
961 #define INSTR2(CAT, name) \
962 static inline struct ir3_instruction * \
963 ir3_##name(struct ir3_block *block, \
964 struct ir3_instruction *a, unsigned aflags, \
965 struct ir3_instruction *b, unsigned bflags) \
967 struct ir3_instruction *instr = \
968 ir3_instr_create(block, CAT, OPC_##name); \
969 ir3_reg_create(instr, 0, 0); /* dst */ \
970 ir3_reg_create(instr, 0, IR3_REG_SSA | aflags)->instr = a; \
971 ir3_reg_create(instr, 0, IR3_REG_SSA | bflags)->instr = b; \
975 #define INSTR3(CAT, name) \
976 static inline struct ir3_instruction * \
977 ir3_##name(struct ir3_block *block, \
978 struct ir3_instruction *a, unsigned aflags, \
979 struct ir3_instruction *b, unsigned bflags, \
980 struct ir3_instruction *c, unsigned cflags) \
982 struct ir3_instruction *instr = \
983 ir3_instr_create(block, CAT, OPC_##name); \
984 ir3_reg_create(instr, 0, 0); /* dst */ \
985 ir3_reg_create(instr, 0, IR3_REG_SSA | aflags)->instr = a; \
986 ir3_reg_create(instr, 0, IR3_REG_SSA | bflags)->instr = b; \
987 ir3_reg_create(instr, 0, IR3_REG_SSA | cflags)->instr = c; \
991 /* cat0 instructions: */
997 /* cat2 instructions, most 2 src but some 1 src: */
1045 /* cat3 instructions: */
1047 INSTR3(3, MADSH_U16
)
1049 INSTR3(3, MADSH_M16
)
1063 /* cat4 instructions: */
1072 /* cat5 instructions: */
1076 static inline struct ir3_instruction
*
1077 ir3_SAM(struct ir3_block
*block
, opc_t opc
, type_t type
,
1078 unsigned wrmask
, unsigned flags
, unsigned samp
, unsigned tex
,
1079 struct ir3_instruction
*src0
, struct ir3_instruction
*src1
)
1081 struct ir3_instruction
*sam
;
1082 struct ir3_register
*reg
;
1084 sam
= ir3_instr_create(block
, 5, opc
);
1085 sam
->flags
|= flags
;
1086 ir3_reg_create(sam
, 0, 0)->wrmask
= wrmask
;
1088 reg
= ir3_reg_create(sam
, 0, IR3_REG_SSA
);
1089 reg
->wrmask
= (1 << (src0
->regs_count
- 1)) - 1;
1093 reg
= ir3_reg_create(sam
, 0, IR3_REG_SSA
);
1095 reg
->wrmask
= (1 << (src1
->regs_count
- 1)) - 1;
1097 sam
->cat5
.samp
= samp
;
1098 sam
->cat5
.tex
= tex
;
1099 sam
->cat5
.type
= type
;
1104 /* cat6 instructions: */
1109 /* ************************************************************************* */
1110 /* split this out or find some helper to use.. like main/bitset.h.. */
1116 typedef uint8_t regmask_t
[2 * MAX_REG
/ 8];
1118 static inline unsigned regmask_idx(struct ir3_register
*reg
)
1120 unsigned num
= (reg
->flags
& IR3_REG_RELATIV
) ? reg
->array
.offset
: reg
->num
;
1121 debug_assert(num
< MAX_REG
);
1122 if (reg
->flags
& IR3_REG_HALF
)
1127 static inline void regmask_init(regmask_t
*regmask
)
1129 memset(regmask
, 0, sizeof(*regmask
));
1132 static inline void regmask_set(regmask_t
*regmask
, struct ir3_register
*reg
)
1134 unsigned idx
= regmask_idx(reg
);
1135 if (reg
->flags
& IR3_REG_RELATIV
) {
1137 for (i
= 0; i
< reg
->size
; i
++, idx
++)
1138 (*regmask
)[idx
/ 8] |= 1 << (idx
% 8);
1141 for (mask
= reg
->wrmask
; mask
; mask
>>= 1, idx
++)
1143 (*regmask
)[idx
/ 8] |= 1 << (idx
% 8);
1147 static inline void regmask_or(regmask_t
*dst
, regmask_t
*a
, regmask_t
*b
)
1150 for (i
= 0; i
< ARRAY_SIZE(*dst
); i
++)
1151 (*dst
)[i
] = (*a
)[i
] | (*b
)[i
];
1154 /* set bits in a if not set in b, conceptually:
1157 static inline void regmask_set_if_not(regmask_t
*a
,
1158 struct ir3_register
*reg
, regmask_t
*b
)
1160 unsigned idx
= regmask_idx(reg
);
1161 if (reg
->flags
& IR3_REG_RELATIV
) {
1163 for (i
= 0; i
< reg
->size
; i
++, idx
++)
1164 if (!((*b
)[idx
/ 8] & (1 << (idx
% 8))))
1165 (*a
)[idx
/ 8] |= 1 << (idx
% 8);
1168 for (mask
= reg
->wrmask
; mask
; mask
>>= 1, idx
++)
1170 if (!((*b
)[idx
/ 8] & (1 << (idx
% 8))))
1171 (*a
)[idx
/ 8] |= 1 << (idx
% 8);
1175 static inline bool regmask_get(regmask_t
*regmask
,
1176 struct ir3_register
*reg
)
1178 unsigned idx
= regmask_idx(reg
);
1179 if (reg
->flags
& IR3_REG_RELATIV
) {
1181 for (i
= 0; i
< reg
->size
; i
++, idx
++)
1182 if ((*regmask
)[idx
/ 8] & (1 << (idx
% 8)))
1186 for (mask
= reg
->wrmask
; mask
; mask
>>= 1, idx
++)
1188 if ((*regmask
)[idx
/ 8] & (1 << (idx
% 8)))
1194 /* ************************************************************************* */