vc4_qir.h revision f09ed63f4342846e361242233162799140674d5f
1/*
2 * Copyright © 2014 Broadcom
3 *
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:
10 *
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
13 * Software.
14 *
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
21 * IN THE SOFTWARE.
22 */
23
24#ifndef VC4_QIR_H
25#define VC4_QIR_H
26
27#include <assert.h>
28#include <stdio.h>
29#include <stdlib.h>
30#include <stdbool.h>
31#include <stdint.h>
32#include <string.h>
33
34#include "util/macros.h"
35#include "glsl/nir/nir.h"
36#include "util/list.h"
37#include "util/u_math.h"
38
39#include "vc4_screen.h"
40#include "pipe/p_state.h"
41
42struct nir_builder;
43
44enum qfile {
45        QFILE_NULL,
46        QFILE_TEMP,
47        QFILE_VARY,
48        QFILE_UNIF,
49        QFILE_VPM,
50
51        /**
52         * Stores an immediate value in the index field that can be turned
53         * into a small immediate field by qpu_encode_small_immediate().
54         */
55        QFILE_SMALL_IMM,
56};
57
58struct qreg {
59        enum qfile file;
60        uint32_t index;
61        int pack;
62};
63
64enum qop {
65        QOP_UNDEF,
66        QOP_MOV,
67        QOP_FADD,
68        QOP_FSUB,
69        QOP_FMUL,
70        QOP_V8MULD,
71        QOP_V8MIN,
72        QOP_V8MAX,
73        QOP_V8ADDS,
74        QOP_V8SUBS,
75        QOP_MUL24,
76        QOP_FMIN,
77        QOP_FMAX,
78        QOP_FMINABS,
79        QOP_FMAXABS,
80        QOP_ADD,
81        QOP_SUB,
82        QOP_SHL,
83        QOP_SHR,
84        QOP_ASR,
85        QOP_MIN,
86        QOP_MAX,
87        QOP_AND,
88        QOP_OR,
89        QOP_XOR,
90        QOP_NOT,
91
92        /* Note: Orderings of these compares must be the same as in
93         * qpu_defines.h.  Selects the src[0] if the ns flag bit is set,
94         * otherwise 0. */
95        QOP_SEL_X_0_ZS,
96        QOP_SEL_X_0_ZC,
97        QOP_SEL_X_0_NS,
98        QOP_SEL_X_0_NC,
99        /* Selects the src[0] if the ns flag bit is set, otherwise src[1]. */
100        QOP_SEL_X_Y_ZS,
101        QOP_SEL_X_Y_ZC,
102        QOP_SEL_X_Y_NS,
103        QOP_SEL_X_Y_NC,
104
105        QOP_FTOI,
106        QOP_ITOF,
107        QOP_RCP,
108        QOP_RSQ,
109        QOP_EXP2,
110        QOP_LOG2,
111        QOP_VW_SETUP,
112        QOP_VR_SETUP,
113        QOP_PACK_8888_F,
114        QOP_PACK_8A_F,
115        QOP_PACK_8B_F,
116        QOP_PACK_8C_F,
117        QOP_PACK_8D_F,
118        QOP_TLB_DISCARD_SETUP,
119        QOP_TLB_STENCIL_SETUP,
120        QOP_TLB_Z_WRITE,
121        QOP_TLB_COLOR_WRITE,
122        QOP_TLB_COLOR_READ,
123        QOP_VARY_ADD_C,
124
125        QOP_FRAG_X,
126        QOP_FRAG_Y,
127        QOP_FRAG_Z,
128        QOP_FRAG_W,
129        QOP_FRAG_REV_FLAG,
130
131        QOP_UNPACK_8A_F,
132        QOP_UNPACK_8B_F,
133        QOP_UNPACK_8C_F,
134        QOP_UNPACK_8D_F,
135        QOP_UNPACK_16A_F,
136        QOP_UNPACK_16B_F,
137
138        QOP_UNPACK_8A_I,
139        QOP_UNPACK_8B_I,
140        QOP_UNPACK_8C_I,
141        QOP_UNPACK_8D_I,
142        QOP_UNPACK_16A_I,
143        QOP_UNPACK_16B_I,
144
145        /** Texture x coordinate parameter write */
146        QOP_TEX_S,
147        /** Texture y coordinate parameter write */
148        QOP_TEX_T,
149        /** Texture border color parameter or cube map z coordinate write */
150        QOP_TEX_R,
151        /** Texture LOD bias parameter write */
152        QOP_TEX_B,
153
154        /**
155         * Texture-unit 4-byte read with address provided direct in S
156         * cooordinate.
157         *
158         * The first operand is the offset from the start of the UBO, and the
159         * second is the uniform that has the UBO's base pointer.
160         */
161        QOP_TEX_DIRECT,
162
163        /**
164         * Signal of texture read being necessary and then reading r4 into
165         * the destination
166         */
167        QOP_TEX_RESULT,
168};
169
170struct queued_qpu_inst {
171        struct list_head link;
172        uint64_t inst;
173};
174
175struct qinst {
176        struct list_head link;
177
178        enum qop op;
179        struct qreg dst;
180        struct qreg *src;
181        bool sf;
182};
183
184enum qstage {
185        /**
186         * Coordinate shader, runs during binning, before the VS, and just
187         * outputs position.
188         */
189        QSTAGE_COORD,
190        QSTAGE_VERT,
191        QSTAGE_FRAG,
192};
193
194enum quniform_contents {
195        /**
196         * Indicates that a constant 32-bit value is copied from the program's
197         * uniform contents.
198         */
199        QUNIFORM_CONSTANT,
200        /**
201         * Indicates that the program's uniform contents are used as an index
202         * into the GL uniform storage.
203         */
204        QUNIFORM_UNIFORM,
205
206        /** @{
207         * Scaling factors from clip coordinates to relative to the viewport
208         * center.
209         *
210         * This is used by the coordinate and vertex shaders to produce the
211         * 32-bit entry consisting of 2 16-bit fields with 12.4 signed fixed
212         * point offsets from the viewport ccenter.
213         */
214        QUNIFORM_VIEWPORT_X_SCALE,
215        QUNIFORM_VIEWPORT_Y_SCALE,
216        /** @} */
217
218        QUNIFORM_VIEWPORT_Z_OFFSET,
219        QUNIFORM_VIEWPORT_Z_SCALE,
220
221        QUNIFORM_USER_CLIP_PLANE,
222
223        /**
224         * A reference to a texture config parameter 0 uniform.
225         *
226         * This is a uniform implicitly loaded with a QPU_W_TMU* write, which
227         * defines texture type, miplevels, and such.  It will be found as a
228         * parameter to the first QOP_TEX_[STRB] instruction in a sequence.
229         */
230        QUNIFORM_TEXTURE_CONFIG_P0,
231
232        /**
233         * A reference to a texture config parameter 1 uniform.
234         *
235         * This is a uniform implicitly loaded with a QPU_W_TMU* write, which
236         * defines texture width, height, filters, and wrap modes.  It will be
237         * found as a parameter to the second QOP_TEX_[STRB] instruction in a
238         * sequence.
239         */
240        QUNIFORM_TEXTURE_CONFIG_P1,
241
242        /** A reference to a texture config parameter 2 cubemap stride uniform */
243        QUNIFORM_TEXTURE_CONFIG_P2,
244
245        QUNIFORM_UBO_ADDR,
246
247        QUNIFORM_TEXRECT_SCALE_X,
248        QUNIFORM_TEXRECT_SCALE_Y,
249
250        QUNIFORM_TEXTURE_BORDER_COLOR,
251
252        QUNIFORM_BLEND_CONST_COLOR_X,
253        QUNIFORM_BLEND_CONST_COLOR_Y,
254        QUNIFORM_BLEND_CONST_COLOR_Z,
255        QUNIFORM_BLEND_CONST_COLOR_W,
256        QUNIFORM_BLEND_CONST_COLOR_RGBA,
257        QUNIFORM_BLEND_CONST_COLOR_AAAA,
258
259        QUNIFORM_STENCIL,
260
261        QUNIFORM_ALPHA_REF,
262};
263
264struct vc4_varying_slot {
265        uint8_t slot;
266        uint8_t swizzle;
267};
268
269struct vc4_compiler_ubo_range {
270        /**
271         * offset in bytes from the start of the ubo where this range is
272         * uploaded.
273         *
274         * Only set once used is set.
275         */
276        uint32_t dst_offset;
277
278        /**
279         * offset in bytes from the start of the gallium uniforms where the
280         * data comes from.
281         */
282        uint32_t src_offset;
283
284        /** size in bytes of this ubo range */
285        uint32_t size;
286
287        /**
288         * Set if this range is used by the shader for indirect uniforms
289         * access.
290         */
291        bool used;
292};
293
294struct vc4_key {
295        struct vc4_uncompiled_shader *shader_state;
296        struct {
297                enum pipe_format format;
298                unsigned compare_mode:1;
299                unsigned compare_func:3;
300                unsigned wrap_s:3;
301                unsigned wrap_t:3;
302                uint8_t swizzle[4];
303        } tex[VC4_MAX_TEXTURE_SAMPLERS];
304        uint8_t ucp_enables;
305};
306
307struct vc4_fs_key {
308        struct vc4_key base;
309        enum pipe_format color_format;
310        bool depth_enabled;
311        bool stencil_enabled;
312        bool stencil_twoside;
313        bool stencil_full_writemasks;
314        bool is_points;
315        bool is_lines;
316        bool alpha_test;
317        bool point_coord_upper_left;
318        bool light_twoside;
319        uint8_t alpha_test_func;
320        uint8_t logicop_func;
321        uint32_t point_sprite_mask;
322
323        struct pipe_rt_blend_state blend;
324};
325
326struct vc4_vs_key {
327        struct vc4_key base;
328
329        /**
330         * This is a proxy for the array of FS input semantics, which is
331         * larger than we would want to put in the key.
332         */
333        uint64_t compiled_fs_id;
334
335        enum pipe_format attr_formats[8];
336        bool is_coord;
337        bool per_vertex_point_size;
338};
339
340struct vc4_compile {
341        struct vc4_context *vc4;
342        nir_shader *s;
343        nir_function_impl *impl;
344        struct exec_list *cf_node_list;
345
346        /**
347         * Mapping from nir_register * or nir_ssa_def * to array of struct
348         * qreg for the values.
349         */
350        struct hash_table *def_ht;
351
352        /* For each temp, the instruction generating its value. */
353        struct qinst **defs;
354        uint32_t defs_array_size;
355
356        /**
357         * Inputs to the shader, arranged by TGSI declaration order.
358         *
359         * Not all fragment shader QFILE_VARY reads are present in this array.
360         */
361        struct qreg *inputs;
362        struct qreg *outputs;
363        uint32_t inputs_array_size;
364        uint32_t outputs_array_size;
365        uint32_t uniforms_array_size;
366
367        struct vc4_compiler_ubo_range *ubo_ranges;
368        uint32_t ubo_ranges_array_size;
369        /** Number of uniform areas declared in ubo_ranges. */
370        uint32_t num_uniform_ranges;
371        /** Number of uniform areas used for indirect addressed loads. */
372        uint32_t num_ubo_ranges;
373        uint32_t next_ubo_dst_offset;
374
375        struct qreg line_x, point_x, point_y;
376        struct qreg discard;
377
378        uint8_t vattr_sizes[8];
379
380        /**
381         * Array of the VARYING_SLOT_* of all FS QFILE_VARY reads.
382         *
383         * This includes those that aren't part of the VPM varyings, like
384         * point/line coordinates.
385         */
386        struct vc4_varying_slot *input_slots;
387        uint32_t num_input_slots;
388        uint32_t input_slots_array_size;
389
390        /**
391         * An entry per outputs[] in the VS indicating what the VARYING_SLOT_*
392         * of the output is.  Used to emit from the VS in the order that the
393         * FS needs.
394         */
395        struct vc4_varying_slot *output_slots;
396
397        struct pipe_shader_state *shader_state;
398        struct vc4_key *key;
399        struct vc4_fs_key *fs_key;
400        struct vc4_vs_key *vs_key;
401
402        uint32_t *uniform_data;
403        enum quniform_contents *uniform_contents;
404        uint32_t uniform_array_size;
405        uint32_t num_uniforms;
406        uint32_t num_outputs;
407        uint32_t num_texture_samples;
408        uint32_t output_position_index;
409        uint32_t output_color_index;
410        uint32_t output_point_size_index;
411
412        struct qreg undef;
413        enum qstage stage;
414        uint32_t num_temps;
415        struct list_head instructions;
416        uint32_t immediates[1024];
417
418        struct list_head qpu_inst_list;
419        uint64_t *qpu_insts;
420        uint32_t qpu_inst_count;
421        uint32_t qpu_inst_size;
422        uint32_t num_inputs;
423
424        uint32_t program_id;
425        uint32_t variant_id;
426};
427
428/* Special nir_load_input intrinsic index for loading the current TLB
429 * destination color.
430 */
431#define VC4_NIR_TLB_COLOR_READ_INPUT		2000000000
432
433/* Special offset for nir_load_uniform values to get a QUNIFORM_*
434 * state-dependent value.
435 */
436#define VC4_NIR_STATE_UNIFORM_OFFSET		2000000000
437
438struct vc4_compile *qir_compile_init(void);
439void qir_compile_destroy(struct vc4_compile *c);
440struct qinst *qir_inst(enum qop op, struct qreg dst,
441                       struct qreg src0, struct qreg src1);
442struct qinst *qir_inst4(enum qop op, struct qreg dst,
443                        struct qreg a,
444                        struct qreg b,
445                        struct qreg c,
446                        struct qreg d);
447void qir_remove_instruction(struct vc4_compile *c, struct qinst *qinst);
448struct qreg qir_uniform(struct vc4_compile *c,
449                        enum quniform_contents contents,
450                        uint32_t data);
451void qir_reorder_uniforms(struct vc4_compile *c);
452
453void qir_emit(struct vc4_compile *c, struct qinst *inst);
454static inline void qir_emit_nodef(struct vc4_compile *c, struct qinst *inst)
455{
456        list_addtail(&inst->link, &c->instructions);
457}
458
459struct qreg qir_get_temp(struct vc4_compile *c);
460int qir_get_op_nsrc(enum qop qop);
461bool qir_reg_equals(struct qreg a, struct qreg b);
462bool qir_has_side_effects(struct vc4_compile *c, struct qinst *inst);
463bool qir_has_side_effect_reads(struct vc4_compile *c, struct qinst *inst);
464bool qir_is_multi_instruction(struct qinst *inst);
465bool qir_is_mul(struct qinst *inst);
466bool qir_is_raw_mov(struct qinst *inst);
467bool qir_is_tex(struct qinst *inst);
468bool qir_depends_on_flags(struct qinst *inst);
469bool qir_writes_r4(struct qinst *inst);
470bool qir_src_needs_a_file(struct qinst *inst);
471struct qreg qir_follow_movs(struct vc4_compile *c, struct qreg reg);
472
473void qir_dump(struct vc4_compile *c);
474void qir_dump_inst(struct vc4_compile *c, struct qinst *inst);
475const char *qir_get_stage_name(enum qstage stage);
476
477void qir_optimize(struct vc4_compile *c);
478bool qir_opt_algebraic(struct vc4_compile *c);
479bool qir_opt_constant_folding(struct vc4_compile *c);
480bool qir_opt_copy_propagation(struct vc4_compile *c);
481bool qir_opt_cse(struct vc4_compile *c);
482bool qir_opt_dead_code(struct vc4_compile *c);
483bool qir_opt_small_immediates(struct vc4_compile *c);
484bool qir_opt_vpm_writes(struct vc4_compile *c);
485void vc4_nir_lower_blend(struct vc4_compile *c);
486void vc4_nir_lower_io(struct vc4_compile *c);
487nir_ssa_def *vc4_nir_get_state_uniform(struct nir_builder *b,
488                                       enum quniform_contents contents);
489nir_ssa_def *vc4_nir_get_swizzled_channel(struct nir_builder *b,
490                                          nir_ssa_def **srcs, int swiz);
491void qir_lower_uniforms(struct vc4_compile *c);
492
493void qpu_schedule_instructions(struct vc4_compile *c);
494
495void qir_SF(struct vc4_compile *c, struct qreg src);
496
497static inline struct qreg
498qir_uniform_ui(struct vc4_compile *c, uint32_t ui)
499{
500        return qir_uniform(c, QUNIFORM_CONSTANT, ui);
501}
502
503static inline struct qreg
504qir_uniform_f(struct vc4_compile *c, float f)
505{
506        return qir_uniform(c, QUNIFORM_CONSTANT, fui(f));
507}
508
509#define QIR_ALU0(name)                                                   \
510static inline struct qreg                                                \
511qir_##name(struct vc4_compile *c)                                        \
512{                                                                        \
513        struct qreg t = qir_get_temp(c);                                 \
514        qir_emit(c, qir_inst(QOP_##name, t, c->undef, c->undef));        \
515        return t;                                                        \
516}
517
518#define QIR_ALU1(name)                                                   \
519static inline struct qreg                                                \
520qir_##name(struct vc4_compile *c, struct qreg a)                         \
521{                                                                        \
522        struct qreg t = qir_get_temp(c);                                 \
523        qir_emit(c, qir_inst(QOP_##name, t, a, c->undef));               \
524        return t;                                                        \
525}                                                                        \
526static inline void                                                       \
527qir_##name##_dest(struct vc4_compile *c, struct qreg dest,               \
528                  struct qreg a)                                         \
529{                                                                        \
530        qir_emit_nodef(c, qir_inst(QOP_##name, dest, a, c->undef));      \
531}
532
533#define QIR_ALU2(name)                                                   \
534static inline struct qreg                                                \
535qir_##name(struct vc4_compile *c, struct qreg a, struct qreg b)          \
536{                                                                        \
537        struct qreg t = qir_get_temp(c);                                 \
538        qir_emit(c, qir_inst(QOP_##name, t, a, b));                      \
539        return t;                                                        \
540}                                                                        \
541static inline void                                                       \
542qir_##name##_dest(struct vc4_compile *c, struct qreg dest,               \
543                  struct qreg a, struct qreg b)                          \
544{                                                                        \
545        qir_emit_nodef(c, qir_inst(QOP_##name, dest, a, b));             \
546}
547
548#define QIR_NODST_1(name)                                               \
549static inline void                                                      \
550qir_##name(struct vc4_compile *c, struct qreg a)                        \
551{                                                                       \
552        qir_emit(c, qir_inst(QOP_##name, c->undef, a, c->undef));       \
553}
554
555#define QIR_NODST_2(name)                                               \
556static inline void                                                      \
557qir_##name(struct vc4_compile *c, struct qreg a, struct qreg b)         \
558{                                                                       \
559        qir_emit(c, qir_inst(QOP_##name, c->undef, a, b));       \
560}
561
562#define QIR_PACK(name)                                                   \
563static inline struct qreg                                                \
564qir_##name(struct vc4_compile *c, struct qreg dest, struct qreg a)       \
565{                                                                        \
566        qir_emit_nodef(c, qir_inst(QOP_##name, dest, a, c->undef));      \
567        return dest;                                                     \
568}
569
570QIR_ALU1(MOV)
571QIR_ALU2(FADD)
572QIR_ALU2(FSUB)
573QIR_ALU2(FMUL)
574QIR_ALU2(V8MULD)
575QIR_ALU2(V8MIN)
576QIR_ALU2(V8MAX)
577QIR_ALU2(V8ADDS)
578QIR_ALU2(V8SUBS)
579QIR_ALU2(MUL24)
580QIR_ALU1(SEL_X_0_ZS)
581QIR_ALU1(SEL_X_0_ZC)
582QIR_ALU1(SEL_X_0_NS)
583QIR_ALU1(SEL_X_0_NC)
584QIR_ALU2(SEL_X_Y_ZS)
585QIR_ALU2(SEL_X_Y_ZC)
586QIR_ALU2(SEL_X_Y_NS)
587QIR_ALU2(SEL_X_Y_NC)
588QIR_ALU2(FMIN)
589QIR_ALU2(FMAX)
590QIR_ALU2(FMINABS)
591QIR_ALU2(FMAXABS)
592QIR_ALU1(FTOI)
593QIR_ALU1(ITOF)
594
595QIR_ALU2(ADD)
596QIR_ALU2(SUB)
597QIR_ALU2(SHL)
598QIR_ALU2(SHR)
599QIR_ALU2(ASR)
600QIR_ALU2(MIN)
601QIR_ALU2(MAX)
602QIR_ALU2(AND)
603QIR_ALU2(OR)
604QIR_ALU2(XOR)
605QIR_ALU1(NOT)
606
607QIR_ALU1(RCP)
608QIR_ALU1(RSQ)
609QIR_ALU1(EXP2)
610QIR_ALU1(LOG2)
611QIR_ALU1(PACK_8888_F)
612QIR_PACK(PACK_8A_F)
613QIR_PACK(PACK_8B_F)
614QIR_PACK(PACK_8C_F)
615QIR_PACK(PACK_8D_F)
616QIR_ALU1(VARY_ADD_C)
617QIR_NODST_2(TEX_S)
618QIR_NODST_2(TEX_T)
619QIR_NODST_2(TEX_R)
620QIR_NODST_2(TEX_B)
621QIR_NODST_2(TEX_DIRECT)
622QIR_ALU0(FRAG_X)
623QIR_ALU0(FRAG_Y)
624QIR_ALU0(FRAG_Z)
625QIR_ALU0(FRAG_W)
626QIR_ALU0(FRAG_REV_FLAG)
627QIR_ALU0(TEX_RESULT)
628QIR_ALU0(TLB_COLOR_READ)
629QIR_NODST_1(TLB_COLOR_WRITE)
630QIR_NODST_1(TLB_Z_WRITE)
631QIR_NODST_1(TLB_DISCARD_SETUP)
632QIR_NODST_1(TLB_STENCIL_SETUP)
633
634static inline struct qreg
635qir_UNPACK_8_F(struct vc4_compile *c, struct qreg src, int i)
636{
637        struct qreg t = qir_get_temp(c);
638        qir_emit(c, qir_inst(QOP_UNPACK_8A_F + i, t, src, c->undef));
639        return t;
640}
641
642static inline struct qreg
643qir_UNPACK_8_I(struct vc4_compile *c, struct qreg src, int i)
644{
645        struct qreg t = qir_get_temp(c);
646        qir_emit(c, qir_inst(QOP_UNPACK_8A_I + i, t, src, c->undef));
647        return t;
648}
649
650static inline struct qreg
651qir_UNPACK_16_F(struct vc4_compile *c, struct qreg src, int i)
652{
653        struct qreg t = qir_get_temp(c);
654        qir_emit(c, qir_inst(QOP_UNPACK_16A_F + i, t, src, c->undef));
655        return t;
656}
657
658static inline struct qreg
659qir_UNPACK_16_I(struct vc4_compile *c, struct qreg src, int i)
660{
661        struct qreg t = qir_get_temp(c);
662        qir_emit(c, qir_inst(QOP_UNPACK_16A_I + i, t, src, c->undef));
663        return t;
664}
665
666static inline struct qreg
667qir_PACK_8_F(struct vc4_compile *c, struct qreg dest, struct qreg val, int chan)
668{
669        qir_emit(c, qir_inst(QOP_PACK_8A_F + chan, dest, val, c->undef));
670        if (dest.file == QFILE_TEMP)
671                c->defs[dest.index] = NULL;
672        return dest;
673}
674
675static inline struct qreg
676qir_POW(struct vc4_compile *c, struct qreg x, struct qreg y)
677{
678        return qir_EXP2(c, qir_FMUL(c,
679                                    y,
680                                    qir_LOG2(c, x)));
681}
682
683static inline void
684qir_VPM_WRITE(struct vc4_compile *c, struct qreg val)
685{
686        static const struct qreg vpm = { QFILE_VPM, 0 };
687        qir_emit(c, qir_inst(QOP_MOV, vpm, val, c->undef));
688}
689
690#endif /* VC4_QIR_H */
691