2 * Copyright © 2014 Broadcom
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
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20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 #include "util/u_memory.h"
25 #include "util/ralloc.h"
33 bool has_side_effects;
34 bool multi_instruction;
37 static const struct qir_op_info qir_op_info[] = {
38 [QOP_MOV] = { "mov", 1, 1 },
39 [QOP_FMOV] = { "fmov", 1, 1 },
40 [QOP_MMOV] = { "mmov", 1, 1 },
41 [QOP_FADD] = { "fadd", 1, 2 },
42 [QOP_FSUB] = { "fsub", 1, 2 },
43 [QOP_FMUL] = { "fmul", 1, 2 },
44 [QOP_MUL24] = { "mul24", 1, 2 },
45 [QOP_V8MULD] = {"v8muld", 1, 2 },
46 [QOP_V8MIN] = {"v8min", 1, 2 },
47 [QOP_V8MAX] = {"v8max", 1, 2 },
48 [QOP_V8ADDS] = {"v8adds", 1, 2 },
49 [QOP_V8SUBS] = {"v8subs", 1, 2 },
50 [QOP_FMIN] = { "fmin", 1, 2 },
51 [QOP_FMAX] = { "fmax", 1, 2 },
52 [QOP_FMINABS] = { "fminabs", 1, 2 },
53 [QOP_FMAXABS] = { "fmaxabs", 1, 2 },
54 [QOP_FTOI] = { "ftoi", 1, 1 },
55 [QOP_ITOF] = { "itof", 1, 1 },
56 [QOP_ADD] = { "add", 1, 2 },
57 [QOP_SUB] = { "sub", 1, 2 },
58 [QOP_SHR] = { "shr", 1, 2 },
59 [QOP_ASR] = { "asr", 1, 2 },
60 [QOP_SHL] = { "shl", 1, 2 },
61 [QOP_MIN] = { "min", 1, 2 },
62 [QOP_MAX] = { "max", 1, 2 },
63 [QOP_AND] = { "and", 1, 2 },
64 [QOP_OR] = { "or", 1, 2 },
65 [QOP_XOR] = { "xor", 1, 2 },
66 [QOP_NOT] = { "not", 1, 1 },
68 [QOP_SEL_X_0_NS] = { "fsel_x_0_ns", 1, 1, false, true },
69 [QOP_SEL_X_0_NC] = { "fsel_x_0_nc", 1, 1, false, true },
70 [QOP_SEL_X_0_ZS] = { "fsel_x_0_zs", 1, 1, false, true },
71 [QOP_SEL_X_0_ZC] = { "fsel_x_0_zc", 1, 1, false, true },
72 [QOP_SEL_X_0_CS] = { "fsel_x_0_cs", 1, 1, false, true },
73 [QOP_SEL_X_0_CC] = { "fsel_x_0_cc", 1, 1, false, true },
74 [QOP_SEL_X_Y_NS] = { "fsel_x_y_ns", 1, 2, false, true },
75 [QOP_SEL_X_Y_NC] = { "fsel_x_y_nc", 1, 2, false, true },
76 [QOP_SEL_X_Y_ZS] = { "fsel_x_y_zs", 1, 2, false, true },
77 [QOP_SEL_X_Y_ZC] = { "fsel_x_y_zc", 1, 2, false, true },
78 [QOP_SEL_X_Y_CS] = { "fsel_x_y_cs", 1, 2, false, true },
79 [QOP_SEL_X_Y_CC] = { "fsel_x_y_cc", 1, 2, false, true },
81 [QOP_RCP] = { "rcp", 1, 1, false, true },
82 [QOP_RSQ] = { "rsq", 1, 1, false, true },
83 [QOP_EXP2] = { "exp2", 1, 2, false, true },
84 [QOP_LOG2] = { "log2", 1, 2, false, true },
85 [QOP_TLB_DISCARD_SETUP] = { "discard", 0, 1, true },
86 [QOP_TLB_STENCIL_SETUP] = { "tlb_stencil_setup", 0, 1, true },
87 [QOP_TLB_Z_WRITE] = { "tlb_z", 0, 1, true },
88 [QOP_TLB_COLOR_WRITE] = { "tlb_color", 0, 1, true },
89 [QOP_TLB_COLOR_WRITE_MS] = { "tlb_color_ms", 0, 1, true },
90 [QOP_TLB_COLOR_READ] = { "tlb_color_read", 1, 0 },
91 [QOP_MS_MASK] = { "ms_mask", 0, 1, true },
92 [QOP_VARY_ADD_C] = { "vary_add_c", 1, 1 },
94 [QOP_FRAG_X] = { "frag_x", 1, 0 },
95 [QOP_FRAG_Y] = { "frag_y", 1, 0 },
96 [QOP_FRAG_Z] = { "frag_z", 1, 0 },
97 [QOP_FRAG_W] = { "frag_w", 1, 0 },
98 [QOP_FRAG_REV_FLAG] = { "frag_rev_flag", 1, 0 },
100 [QOP_TEX_S] = { "tex_s", 0, 2 },
101 [QOP_TEX_T] = { "tex_t", 0, 2 },
102 [QOP_TEX_R] = { "tex_r", 0, 2 },
103 [QOP_TEX_B] = { "tex_b", 0, 2 },
104 [QOP_TEX_DIRECT] = { "tex_direct", 0, 2 },
105 [QOP_TEX_RESULT] = { "tex_result", 1, 0, true },
109 qir_get_op_name(enum qop qop)
111 if (qop < ARRAY_SIZE(qir_op_info) && qir_op_info[qop].name)
112 return qir_op_info[qop].name;
118 qir_get_op_nsrc(enum qop qop)
120 if (qop < ARRAY_SIZE(qir_op_info) && qir_op_info[qop].name)
121 return qir_op_info[qop].nsrc;
127 * Returns whether the instruction has any side effects that must be
131 qir_has_side_effects(struct vc4_compile *c, struct qinst *inst)
133 return qir_op_info[inst->op].has_side_effects;
137 qir_has_side_effect_reads(struct vc4_compile *c, struct qinst *inst)
139 /* We can dead-code eliminate varyings, because we only tell the VS
140 * about the live ones at the end. But we have to preserve the
141 * point/line coordinates reads, because they're generated by
142 * fixed-function hardware.
144 for (int i = 0; i < qir_get_op_nsrc(inst->op); i++) {
145 if (inst->src[i].file == QFILE_VARY &&
146 c->input_slots[inst->src[i].index].slot == 0xff) {
150 if (inst->src[i].file == QFILE_VPM)
154 if (inst->dst.file == QFILE_VPM)
161 qir_is_multi_instruction(struct qinst *inst)
163 return qir_op_info[inst->op].multi_instruction;
167 qir_is_mul(struct qinst *inst)
185 qir_is_float_input(struct qinst *inst)
204 qir_is_raw_mov(struct qinst *inst)
206 return ((inst->op == QOP_MOV ||
207 inst->op == QOP_FMOV ||
208 inst->op == QOP_MMOV) &&
214 qir_is_tex(struct qinst *inst)
216 return inst->op >= QOP_TEX_S && inst->op <= QOP_TEX_DIRECT;
220 qir_depends_on_flags(struct qinst *inst)
242 qir_writes_r4(struct qinst *inst)
246 case QOP_TLB_COLOR_READ:
258 qir_print_reg(struct vc4_compile *c, struct qreg reg, bool write)
260 static const char *files[] = {
266 if (reg.file == QFILE_NULL) {
267 fprintf(stderr, "null");
268 } else if (reg.file == QFILE_SMALL_IMM) {
269 if ((int)reg.index >= -16 && (int)reg.index <= 15)
270 fprintf(stderr, "%d", reg.index);
272 fprintf(stderr, "%f", uif(reg.index));
273 } else if (reg.file == QFILE_VPM) {
275 fprintf(stderr, "vpm");
277 fprintf(stderr, "vpm%d.%d",
278 reg.index / 4, reg.index % 4);
281 fprintf(stderr, "%s%d", files[reg.file], reg.index);
284 if (reg.file == QFILE_UNIF &&
285 c->uniform_contents[reg.index] == QUNIFORM_CONSTANT) {
286 fprintf(stderr, " (0x%08x / %f)",
287 c->uniform_data[reg.index],
288 uif(c->uniform_data[reg.index]));
293 qir_dump_inst(struct vc4_compile *c, struct qinst *inst)
295 fprintf(stderr, "%s%s ",
296 qir_get_op_name(inst->op),
297 inst->sf ? ".sf" : "");
299 qir_print_reg(c, inst->dst, true);
300 if (inst->dst.pack) {
301 if (inst->dst.pack) {
302 if (qir_is_mul(inst))
303 vc4_qpu_disasm_pack_mul(stderr, inst->dst.pack);
305 vc4_qpu_disasm_pack_a(stderr, inst->dst.pack);
308 for (int i = 0; i < qir_get_op_nsrc(inst->op); i++) {
309 fprintf(stderr, ", ");
310 qir_print_reg(c, inst->src[i], false);
311 vc4_qpu_disasm_unpack(stderr, inst->src[i].pack);
316 qir_dump(struct vc4_compile *c)
318 list_for_each_entry(struct qinst, inst, &c->instructions, link) {
319 qir_dump_inst(c, inst);
320 fprintf(stderr, "\n");
325 qir_get_temp(struct vc4_compile *c)
329 reg.file = QFILE_TEMP;
330 reg.index = c->num_temps++;
333 if (c->num_temps > c->defs_array_size) {
334 uint32_t old_size = c->defs_array_size;
335 c->defs_array_size = MAX2(old_size * 2, 16);
336 c->defs = reralloc(c, c->defs, struct qinst *,
338 memset(&c->defs[old_size], 0,
339 sizeof(c->defs[0]) * (c->defs_array_size - old_size));
346 qir_inst(enum qop op, struct qreg dst, struct qreg src0, struct qreg src1)
348 struct qinst *inst = CALLOC_STRUCT(qinst);
352 inst->src = calloc(2, sizeof(inst->src[0]));
360 qir_inst4(enum qop op, struct qreg dst,
366 struct qinst *inst = CALLOC_STRUCT(qinst);
370 inst->src = calloc(4, sizeof(*inst->src));
380 qir_emit(struct vc4_compile *c, struct qinst *inst)
382 if (inst->dst.file == QFILE_TEMP)
383 c->defs[inst->dst.index] = inst;
385 qir_emit_nodef(c, inst);
389 qir_reg_equals(struct qreg a, struct qreg b)
391 return a.file == b.file && a.index == b.index;
395 qir_compile_init(void)
397 struct vc4_compile *c = rzalloc(NULL, struct vc4_compile);
399 list_inithead(&c->instructions);
401 c->output_position_index = -1;
402 c->output_color_index = -1;
403 c->output_point_size_index = -1;
404 c->output_sample_mask_index = -1;
406 c->def_ht = _mesa_hash_table_create(c, _mesa_hash_pointer,
407 _mesa_key_pointer_equal);
413 qir_remove_instruction(struct vc4_compile *c, struct qinst *qinst)
415 if (qinst->dst.file == QFILE_TEMP)
416 c->defs[qinst->dst.index] = NULL;
418 list_del(&qinst->link);
424 qir_follow_movs(struct vc4_compile *c, struct qreg reg)
428 while (reg.file == QFILE_TEMP &&
429 c->defs[reg.index] &&
430 (c->defs[reg.index]->op == QOP_MOV ||
431 c->defs[reg.index]->op == QOP_FMOV ||
432 c->defs[reg.index]->op == QOP_MMOV)&&
433 !c->defs[reg.index]->dst.pack &&
434 !c->defs[reg.index]->src[0].pack) {
435 reg = c->defs[reg.index]->src[0];
443 qir_compile_destroy(struct vc4_compile *c)
445 while (!list_empty(&c->instructions)) {
446 struct qinst *qinst =
447 (struct qinst *)c->instructions.next;
448 qir_remove_instruction(c, qinst);
455 qir_get_stage_name(enum qstage stage)
457 static const char *names[] = {
458 [QSTAGE_FRAG] = "FS",
459 [QSTAGE_VERT] = "VS",
460 [QSTAGE_COORD] = "CS",
467 qir_uniform(struct vc4_compile *c,
468 enum quniform_contents contents,
471 for (int i = 0; i < c->num_uniforms; i++) {
472 if (c->uniform_contents[i] == contents &&
473 c->uniform_data[i] == data) {
474 return (struct qreg) { QFILE_UNIF, i };
478 uint32_t uniform = c->num_uniforms++;
479 struct qreg u = { QFILE_UNIF, uniform };
481 if (uniform >= c->uniform_array_size) {
482 c->uniform_array_size = MAX2(MAX2(16, uniform + 1),
483 c->uniform_array_size * 2);
485 c->uniform_data = reralloc(c, c->uniform_data,
487 c->uniform_array_size);
488 c->uniform_contents = reralloc(c, c->uniform_contents,
489 enum quniform_contents,
490 c->uniform_array_size);
493 c->uniform_contents[uniform] = contents;
494 c->uniform_data[uniform] = data;
500 qir_SF(struct vc4_compile *c, struct qreg src)
502 struct qinst *last_inst = NULL;
503 if (!list_empty(&c->instructions))
504 last_inst = (struct qinst *)c->instructions.prev;
507 last_inst->dst.file != src.file ||
508 last_inst->dst.index != src.index ||
509 qir_is_multi_instruction(last_inst)) {
510 src = qir_MOV(c, src);
511 last_inst = (struct qinst *)c->instructions.prev;
513 last_inst->sf = true;
516 #define OPTPASS(func) \
518 bool stage_progress = func(c); \
519 if (stage_progress) { \
521 if (print_opt_debug) { \
523 "QIR opt pass %2d: %s progress\n", \
530 qir_optimize(struct vc4_compile *c)
532 bool print_opt_debug = false;
536 bool progress = false;
538 OPTPASS(qir_opt_algebraic);
539 OPTPASS(qir_opt_cse);
540 OPTPASS(qir_opt_constant_folding);
541 OPTPASS(qir_opt_copy_propagation);
542 OPTPASS(qir_opt_dead_code);
543 OPTPASS(qir_opt_small_immediates);
544 OPTPASS(qir_opt_vpm_writes);