radeonsi: rename shader_userdata -> shader_pointers where appropriate
[mesa.git] / src / gallium / drivers / radeonsi / si_pipe.h
1 /*
2 * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Jerome Glisse
25 */
26 #ifndef SI_PIPE_H
27 #define SI_PIPE_H
28
29 #include "si_shader.h"
30
31 #include "util/u_dynarray.h"
32
33 #ifdef PIPE_ARCH_BIG_ENDIAN
34 #define SI_BIG_ENDIAN 1
35 #else
36 #define SI_BIG_ENDIAN 0
37 #endif
38
39 /* The base vertex and primitive restart can be any number, but we must pick
40 * one which will mean "unknown" for the purpose of state tracking and
41 * the number shouldn't be a commonly-used one. */
42 #define SI_BASE_VERTEX_UNKNOWN INT_MIN
43 #define SI_RESTART_INDEX_UNKNOWN INT_MIN
44 #define SI_NUM_SMOOTH_AA_SAMPLES 8
45 #define SI_GS_PER_ES 128
46 /* Alignment for optimal CP DMA performance. */
47 #define SI_CPDMA_ALIGNMENT 32
48
49 /* Instruction cache. */
50 #define SI_CONTEXT_INV_ICACHE (R600_CONTEXT_PRIVATE_FLAG << 0)
51 /* SMEM L1, other names: KCACHE, constant cache, DCACHE, data cache */
52 #define SI_CONTEXT_INV_SMEM_L1 (R600_CONTEXT_PRIVATE_FLAG << 1)
53 /* VMEM L1 can optionally be bypassed (GLC=1). Other names: TC L1 */
54 #define SI_CONTEXT_INV_VMEM_L1 (R600_CONTEXT_PRIVATE_FLAG << 2)
55 /* Used by everything except CB/DB, can be bypassed (SLC=1). Other names: TC L2 */
56 #define SI_CONTEXT_INV_GLOBAL_L2 (R600_CONTEXT_PRIVATE_FLAG << 3)
57 /* Write dirty L2 lines back to memory (shader and CP DMA stores), but don't
58 * invalidate L2. SI-CIK can't do it, so they will do complete invalidation. */
59 #define SI_CONTEXT_WRITEBACK_GLOBAL_L2 (R600_CONTEXT_PRIVATE_FLAG << 4)
60 /* gaps */
61 /* Framebuffer caches. */
62 #define SI_CONTEXT_FLUSH_AND_INV_DB (R600_CONTEXT_PRIVATE_FLAG << 7)
63 #define SI_CONTEXT_FLUSH_AND_INV_CB (R600_CONTEXT_PRIVATE_FLAG << 8)
64 /* Engine synchronization. */
65 #define SI_CONTEXT_VS_PARTIAL_FLUSH (R600_CONTEXT_PRIVATE_FLAG << 9)
66 #define SI_CONTEXT_PS_PARTIAL_FLUSH (R600_CONTEXT_PRIVATE_FLAG << 10)
67 #define SI_CONTEXT_CS_PARTIAL_FLUSH (R600_CONTEXT_PRIVATE_FLAG << 11)
68 #define SI_CONTEXT_VGT_FLUSH (R600_CONTEXT_PRIVATE_FLAG << 12)
69 #define SI_CONTEXT_VGT_STREAMOUT_SYNC (R600_CONTEXT_PRIVATE_FLAG << 13)
70
71 #define SI_PREFETCH_VBO_DESCRIPTORS (1 << 0)
72 #define SI_PREFETCH_LS (1 << 1)
73 #define SI_PREFETCH_HS (1 << 2)
74 #define SI_PREFETCH_ES (1 << 3)
75 #define SI_PREFETCH_GS (1 << 4)
76 #define SI_PREFETCH_VS (1 << 5)
77 #define SI_PREFETCH_PS (1 << 6)
78
79 #define SI_MAX_BORDER_COLORS 4096
80 #define SIX_BITS 0x3F
81
82 struct si_compute;
83 struct hash_table;
84 struct u_suballocator;
85
86 struct si_screen {
87 struct r600_common_screen b;
88 unsigned gs_table_depth;
89 unsigned tess_offchip_block_dw_size;
90 bool has_distributed_tess;
91 bool has_draw_indirect_multi;
92 bool has_ds_bpermute;
93 bool has_msaa_sample_loc_bug;
94 bool llvm_has_working_vgpr_indexing;
95
96 /* Whether shaders are monolithic (1-part) or separate (3-part). */
97 bool use_monolithic_shaders;
98 bool record_llvm_ir;
99
100 mtx_t shader_parts_mutex;
101 struct si_shader_part *vs_prologs;
102 struct si_shader_part *tcs_epilogs;
103 struct si_shader_part *gs_prologs;
104 struct si_shader_part *ps_prologs;
105 struct si_shader_part *ps_epilogs;
106
107 /* Shader cache in memory.
108 *
109 * Design & limitations:
110 * - The shader cache is per screen (= per process), never saved to
111 * disk, and skips redundant shader compilations from TGSI to bytecode.
112 * - It can only be used with one-variant-per-shader support, in which
113 * case only the main (typically middle) part of shaders is cached.
114 * - Only VS, TCS, TES, PS are cached, out of which only the hw VS
115 * variants of VS and TES are cached, so LS and ES aren't.
116 * - GS and CS aren't cached, but it's certainly possible to cache
117 * those as well.
118 */
119 mtx_t shader_cache_mutex;
120 struct hash_table *shader_cache;
121
122 /* Shader compiler queue for multithreaded compilation. */
123 struct util_queue shader_compiler_queue;
124 /* Use at most 3 normal compiler threads on quadcore and better.
125 * Hyperthreaded CPUs report the number of threads, but we want
126 * the number of cores. */
127 LLVMTargetMachineRef tm[3]; /* used by the queue only */
128
129 struct util_queue shader_compiler_queue_low_priority;
130 /* Use at most 2 low priority threads on quadcore and better.
131 * We want to minimize the impact on multithreaded Mesa. */
132 LLVMTargetMachineRef tm_low_priority[2]; /* at most 2 threads */
133 };
134
135 struct si_blend_color {
136 struct r600_atom atom;
137 struct pipe_blend_color state;
138 bool any_nonzeros;
139 };
140
141 struct si_sampler_view {
142 struct pipe_sampler_view base;
143 /* [0..7] = image descriptor
144 * [4..7] = buffer descriptor */
145 uint32_t state[8];
146 uint32_t fmask_state[8];
147 const struct legacy_surf_level *base_level_info;
148 ubyte base_level;
149 ubyte block_width;
150 bool is_stencil_sampler;
151 bool dcc_incompatible;
152 };
153
154 #define SI_SAMPLER_STATE_MAGIC 0x34f1c35a
155
156 struct si_sampler_state {
157 #ifdef DEBUG
158 unsigned magic;
159 #endif
160 uint32_t val[4];
161 };
162
163 struct si_cs_shader_state {
164 struct si_compute *program;
165 struct si_compute *emitted_program;
166 unsigned offset;
167 bool initialized;
168 bool uses_scratch;
169 };
170
171 struct si_textures_info {
172 struct si_sampler_views views;
173 uint32_t needs_depth_decompress_mask;
174 uint32_t needs_color_decompress_mask;
175 };
176
177 struct si_images_info {
178 struct pipe_image_view views[SI_NUM_IMAGES];
179 uint32_t needs_color_decompress_mask;
180 unsigned enabled_mask;
181 };
182
183 struct si_framebuffer {
184 struct r600_atom atom;
185 struct pipe_framebuffer_state state;
186 unsigned colorbuf_enabled_4bit;
187 unsigned spi_shader_col_format;
188 unsigned spi_shader_col_format_alpha;
189 unsigned spi_shader_col_format_blend;
190 unsigned spi_shader_col_format_blend_alpha;
191 ubyte nr_samples:5; /* at most 16xAA */
192 ubyte log_samples:3; /* at most 4 = 16xAA */
193 ubyte compressed_cb_mask;
194 ubyte color_is_int8;
195 ubyte color_is_int10;
196 ubyte dirty_cbufs;
197 bool dirty_zsbuf;
198 bool any_dst_linear;
199 };
200
201 struct si_clip_state {
202 struct r600_atom atom;
203 struct pipe_clip_state state;
204 bool any_nonzeros;
205 };
206
207 struct si_sample_locs {
208 struct r600_atom atom;
209 unsigned nr_samples;
210 };
211
212 struct si_sample_mask {
213 struct r600_atom atom;
214 uint16_t sample_mask;
215 };
216
217 /* A shader state consists of the shader selector, which is a constant state
218 * object shared by multiple contexts and shouldn't be modified, and
219 * the current shader variant selected for this context.
220 */
221 struct si_shader_ctx_state {
222 struct si_shader_selector *cso;
223 struct si_shader *current;
224 };
225
226 #define SI_NUM_VGT_PARAM_KEY_BITS 12
227 #define SI_NUM_VGT_PARAM_STATES (1 << SI_NUM_VGT_PARAM_KEY_BITS)
228
229 /* The IA_MULTI_VGT_PARAM key used to index the table of precomputed values.
230 * Some fields are set by state-change calls, most are set by draw_vbo.
231 */
232 union si_vgt_param_key {
233 struct {
234 unsigned prim:4;
235 unsigned uses_instancing:1;
236 unsigned multi_instances_smaller_than_primgroup:1;
237 unsigned primitive_restart:1;
238 unsigned count_from_stream_output:1;
239 unsigned line_stipple_enabled:1;
240 unsigned uses_tess:1;
241 unsigned tess_uses_prim_id:1;
242 unsigned uses_gs:1;
243 unsigned _pad:32 - SI_NUM_VGT_PARAM_KEY_BITS;
244 } u;
245 uint32_t index;
246 };
247
248 struct si_bindless_descriptor
249 {
250 struct pb_slab_entry entry;
251 struct r600_resource *buffer;
252 unsigned offset;
253 uint32_t desc_list[16];
254 bool dirty;
255 };
256
257 struct si_texture_handle
258 {
259 struct si_bindless_descriptor *desc;
260 struct pipe_sampler_view *view;
261 struct si_sampler_state sstate;
262 };
263
264 struct si_image_handle
265 {
266 struct si_bindless_descriptor *desc;
267 struct pipe_image_view view;
268 };
269
270 struct si_context {
271 struct r600_common_context b;
272 struct blitter_context *blitter;
273 void *custom_dsa_flush;
274 void *custom_blend_resolve;
275 void *custom_blend_fmask_decompress;
276 void *custom_blend_eliminate_fastclear;
277 void *custom_blend_dcc_decompress;
278 struct si_screen *screen;
279 LLVMTargetMachineRef tm; /* only non-threaded compilation */
280 struct si_shader_ctx_state fixed_func_tcs_shader;
281 struct r600_resource *wait_mem_scratch;
282 unsigned wait_mem_number;
283
284 struct radeon_winsys_cs *ce_ib;
285 struct radeon_winsys_cs *ce_preamble_ib;
286 struct r600_resource *ce_ram_saved_buffer;
287 struct u_suballocator *ce_suballocator;
288 unsigned ce_ram_saved_offset;
289 uint16_t total_ce_ram_allocated;
290 uint16_t prefetch_L2_mask;
291 bool ce_need_synchronization:1;
292
293 bool gfx_flush_in_progress:1;
294 bool compute_is_busy:1;
295
296 /* Atoms (direct states). */
297 union si_state_atoms atoms;
298 unsigned dirty_atoms; /* mask */
299 /* PM4 states (precomputed immutable states) */
300 unsigned dirty_states;
301 union si_state queued;
302 union si_state emitted;
303
304 /* Atom declarations. */
305 struct si_framebuffer framebuffer;
306 struct si_sample_locs msaa_sample_locs;
307 struct r600_atom db_render_state;
308 struct r600_atom msaa_config;
309 struct si_sample_mask sample_mask;
310 struct r600_atom cb_render_state;
311 unsigned last_cb_target_mask;
312 struct si_blend_color blend_color;
313 struct r600_atom clip_regs;
314 struct si_clip_state clip_state;
315 struct si_shader_data shader_pointers;
316 struct si_stencil_ref stencil_ref;
317 struct r600_atom spi_map;
318
319 /* Precomputed states. */
320 struct si_pm4_state *init_config;
321 struct si_pm4_state *init_config_gs_rings;
322 bool init_config_has_vgt_flush;
323 struct si_pm4_state *vgt_shader_config[4];
324
325 /* shaders */
326 struct si_shader_ctx_state ps_shader;
327 struct si_shader_ctx_state gs_shader;
328 struct si_shader_ctx_state vs_shader;
329 struct si_shader_ctx_state tcs_shader;
330 struct si_shader_ctx_state tes_shader;
331 struct si_cs_shader_state cs_shader_state;
332
333 /* shader information */
334 struct si_vertex_elements *vertex_elements;
335 unsigned sprite_coord_enable;
336 bool flatshade;
337 bool do_update_shaders;
338
339 /* shader descriptors */
340 struct si_descriptors vertex_buffers;
341 struct si_descriptors descriptors[SI_NUM_DESCS];
342 unsigned descriptors_dirty;
343 unsigned shader_pointers_dirty;
344 unsigned shader_needs_decompress_mask;
345 struct si_buffer_resources rw_buffers;
346 struct si_buffer_resources const_and_shader_buffers[SI_NUM_SHADERS];
347 struct si_textures_info samplers[SI_NUM_SHADERS];
348 struct si_images_info images[SI_NUM_SHADERS];
349
350 /* other shader resources */
351 struct pipe_constant_buffer null_const_buf; /* used for set_constant_buffer(NULL) on CIK */
352 struct pipe_resource *esgs_ring;
353 struct pipe_resource *gsvs_ring;
354 struct pipe_resource *tf_ring;
355 struct pipe_resource *tess_offchip_ring;
356 union pipe_color_union *border_color_table; /* in CPU memory, any endian */
357 struct r600_resource *border_color_buffer;
358 union pipe_color_union *border_color_map; /* in VRAM (slow access), little endian */
359 unsigned border_color_count;
360
361 /* Vertex and index buffers. */
362 bool vertex_buffers_dirty;
363 bool vertex_buffer_pointer_dirty;
364 struct pipe_vertex_buffer vertex_buffer[SI_NUM_VERTEX_BUFFERS];
365
366 /* MSAA config state. */
367 int ps_iter_samples;
368 bool smoothing_enabled;
369
370 /* DB render state. */
371 unsigned ps_db_shader_control;
372 unsigned dbcb_copy_sample;
373 bool dbcb_depth_copy_enabled:1;
374 bool dbcb_stencil_copy_enabled:1;
375 bool db_flush_depth_inplace:1;
376 bool db_flush_stencil_inplace:1;
377 bool db_depth_clear:1;
378 bool db_depth_disable_expclear:1;
379 bool db_stencil_clear:1;
380 bool db_stencil_disable_expclear:1;
381 bool occlusion_queries_disabled:1;
382 bool generate_mipmap_for_depth:1;
383
384 /* Emitted draw state. */
385 bool gs_tri_strip_adj_fix:1;
386 int last_index_size;
387 int last_base_vertex;
388 int last_start_instance;
389 int last_drawid;
390 int last_sh_base_reg;
391 int last_primitive_restart_en;
392 int last_restart_index;
393 int last_gs_out_prim;
394 int last_prim;
395 int last_multi_vgt_param;
396 int last_rast_prim;
397 unsigned last_sc_line_stipple;
398 unsigned current_vs_state;
399 unsigned last_vs_state;
400 enum pipe_prim_type current_rast_prim; /* primitive type after TES, GS */
401
402 /* Scratch buffer */
403 struct r600_atom scratch_state;
404 struct r600_resource *scratch_buffer;
405 unsigned scratch_waves;
406 unsigned spi_tmpring_size;
407
408 struct r600_resource *compute_scratch_buffer;
409
410 /* Emitted derived tessellation state. */
411 /* Local shader (VS), or HS if LS-HS are merged. */
412 struct si_shader *last_ls;
413 struct si_shader_selector *last_tcs;
414 int last_num_tcs_input_cp;
415 int last_tes_sh_base;
416 bool last_tess_uses_primid;
417 unsigned last_num_patches;
418
419 /* Debug state. */
420 bool is_debug;
421 struct radeon_saved_cs last_gfx;
422 struct radeon_saved_cs last_ce;
423 struct r600_resource *last_trace_buf;
424 struct r600_resource *trace_buf;
425 unsigned trace_id;
426 uint64_t dmesg_timestamp;
427 unsigned apitrace_call_number;
428
429 /* Other state */
430 bool need_check_render_feedback;
431 bool decompression_enabled;
432
433 /* Precomputed IA_MULTI_VGT_PARAM */
434 union si_vgt_param_key ia_multi_vgt_param_key;
435 unsigned ia_multi_vgt_param[SI_NUM_VGT_PARAM_STATES];
436
437 /* Slab allocator for bindless descriptors. */
438 struct pb_slabs bindless_descriptor_slabs;
439
440 /* Bindless descriptors. */
441 struct util_dynarray bindless_descriptors;
442 bool bindless_descriptors_dirty;
443
444 /* Allocated bindless handles */
445 struct hash_table *tex_handles;
446 struct hash_table *img_handles;
447
448 /* Resident bindless handles */
449 struct util_dynarray resident_tex_handles;
450 struct util_dynarray resident_img_handles;
451
452 /* Resident bindless handles which need decompression */
453 struct util_dynarray resident_tex_needs_color_decompress;
454 struct util_dynarray resident_img_needs_color_decompress;
455 struct util_dynarray resident_tex_needs_depth_decompress;
456
457 /* Bindless state */
458 bool uses_bindless_samplers;
459 bool uses_bindless_images;
460 };
461
462 /* cik_sdma.c */
463 void cik_init_sdma_functions(struct si_context *sctx);
464
465 /* si_blit.c */
466 void si_init_blit_functions(struct si_context *sctx);
467 void si_decompress_graphics_textures(struct si_context *sctx);
468 void si_decompress_compute_textures(struct si_context *sctx);
469 void si_resource_copy_region(struct pipe_context *ctx,
470 struct pipe_resource *dst,
471 unsigned dst_level,
472 unsigned dstx, unsigned dsty, unsigned dstz,
473 struct pipe_resource *src,
474 unsigned src_level,
475 const struct pipe_box *src_box);
476
477 /* si_cp_dma.c */
478 #define SI_CPDMA_SKIP_CHECK_CS_SPACE (1 << 0) /* don't call need_cs_space */
479 #define SI_CPDMA_SKIP_SYNC_AFTER (1 << 1) /* don't wait for DMA after the copy */
480 #define SI_CPDMA_SKIP_SYNC_BEFORE (1 << 2) /* don't wait for DMA before the copy (RAW hazards) */
481 #define SI_CPDMA_SKIP_GFX_SYNC (1 << 3) /* don't flush caches and don't wait for PS/CS */
482 #define SI_CPDMA_SKIP_BO_LIST_UPDATE (1 << 4) /* don't update the BO list */
483 #define SI_CPDMA_SKIP_ALL (SI_CPDMA_SKIP_CHECK_CS_SPACE | \
484 SI_CPDMA_SKIP_SYNC_AFTER | \
485 SI_CPDMA_SKIP_SYNC_BEFORE | \
486 SI_CPDMA_SKIP_GFX_SYNC | \
487 SI_CPDMA_SKIP_BO_LIST_UPDATE)
488
489 void si_copy_buffer(struct si_context *sctx,
490 struct pipe_resource *dst, struct pipe_resource *src,
491 uint64_t dst_offset, uint64_t src_offset, unsigned size,
492 unsigned user_flags);
493 void cik_prefetch_TC_L2_async(struct si_context *sctx, struct pipe_resource *buf,
494 uint64_t offset, unsigned size);
495 void cik_emit_prefetch_L2(struct si_context *sctx);
496 void si_init_cp_dma_functions(struct si_context *sctx);
497
498 /* si_debug.c */
499 void si_init_debug_functions(struct si_context *sctx);
500 void si_check_vm_faults(struct r600_common_context *ctx,
501 struct radeon_saved_cs *saved, enum ring_type ring);
502 bool si_replace_shader(unsigned num, struct ac_shader_binary *binary);
503
504 /* si_dma.c */
505 void si_init_dma_functions(struct si_context *sctx);
506
507 /* si_hw_context.c */
508 void si_context_gfx_flush(void *context, unsigned flags,
509 struct pipe_fence_handle **fence);
510 void si_begin_new_cs(struct si_context *ctx);
511 void si_need_cs_space(struct si_context *ctx);
512
513 /* si_compute.c */
514 void si_init_compute_functions(struct si_context *sctx);
515
516 /* si_perfcounters.c */
517 void si_init_perfcounters(struct si_screen *screen);
518
519 /* si_uvd.c */
520 struct pipe_video_codec *si_uvd_create_decoder(struct pipe_context *context,
521 const struct pipe_video_codec *templ);
522
523 struct pipe_video_buffer *si_video_buffer_create(struct pipe_context *pipe,
524 const struct pipe_video_buffer *tmpl);
525
526 /*
527 * common helpers
528 */
529
530 static inline void
531 si_invalidate_draw_sh_constants(struct si_context *sctx)
532 {
533 sctx->last_base_vertex = SI_BASE_VERTEX_UNKNOWN;
534 }
535
536 static inline void
537 si_set_atom_dirty(struct si_context *sctx,
538 struct r600_atom *atom, bool dirty)
539 {
540 unsigned bit = 1 << atom->id;
541
542 if (dirty)
543 sctx->dirty_atoms |= bit;
544 else
545 sctx->dirty_atoms &= ~bit;
546 }
547
548 static inline bool
549 si_is_atom_dirty(struct si_context *sctx,
550 struct r600_atom *atom)
551 {
552 unsigned bit = 1 << atom->id;
553
554 return sctx->dirty_atoms & bit;
555 }
556
557 static inline void
558 si_mark_atom_dirty(struct si_context *sctx,
559 struct r600_atom *atom)
560 {
561 si_set_atom_dirty(sctx, atom, true);
562 }
563
564 static inline struct si_shader_ctx_state *si_get_vs(struct si_context *sctx)
565 {
566 if (sctx->gs_shader.cso)
567 return &sctx->gs_shader;
568 if (sctx->tes_shader.cso)
569 return &sctx->tes_shader;
570
571 return &sctx->vs_shader;
572 }
573
574 static inline struct tgsi_shader_info *si_get_vs_info(struct si_context *sctx)
575 {
576 struct si_shader_ctx_state *vs = si_get_vs(sctx);
577
578 return vs->cso ? &vs->cso->info : NULL;
579 }
580
581 static inline struct si_shader* si_get_vs_state(struct si_context *sctx)
582 {
583 if (sctx->gs_shader.cso)
584 return sctx->gs_shader.cso->gs_copy_shader;
585
586 struct si_shader_ctx_state *vs = si_get_vs(sctx);
587 return vs->current ? vs->current : NULL;
588 }
589
590 static inline unsigned
591 si_optimal_tcc_alignment(struct si_context *sctx, unsigned upload_size)
592 {
593 unsigned alignment, tcc_cache_line_size;
594
595 /* If the upload size is less than the cache line size (e.g. 16, 32),
596 * the whole thing will fit into a cache line if we align it to its size.
597 * The idea is that multiple small uploads can share a cache line.
598 * If the upload size is greater, align it to the cache line size.
599 */
600 alignment = util_next_power_of_two(upload_size);
601 tcc_cache_line_size = sctx->screen->b.info.tcc_cache_line_size;
602 return MIN2(alignment, tcc_cache_line_size);
603 }
604
605 #endif