1 /*
2 * Copyright 2010 Corbin Simpson
3 * Copyright 2010 Marek Olšák <[email protected]>
4 * SPDX-License-Identifier: MIT
5 */
6
7 #include "radeon_program_tex.h"
8
9 #include "radeon_compiler_util.h"
10
11 /* Series of transformations to be done on textures. */
12
shadow_fail_value(struct r300_fragment_program_compiler * compiler,int tmu)13 static struct rc_src_register shadow_fail_value(struct r300_fragment_program_compiler *compiler,
14 int tmu)
15 {
16 struct rc_src_register reg = { 0, 0, 0, 0, 0, 0 };
17
18 reg.File = RC_FILE_NONE;
19 reg.Swizzle = combine_swizzles(RC_SWIZZLE_0000,
20 compiler->state.unit[tmu].texture_swizzle);
21 return reg;
22 }
23
shadow_pass_value(struct r300_fragment_program_compiler * compiler,int tmu)24 static struct rc_src_register shadow_pass_value(struct r300_fragment_program_compiler *compiler,
25 int tmu)
26 {
27 struct rc_src_register reg = { 0, 0, 0, 0, 0, 0 };
28
29 reg.File = RC_FILE_NONE;
30 reg.Swizzle = combine_swizzles(RC_SWIZZLE_1111,
31 compiler->state.unit[tmu].texture_swizzle);
32 return reg;
33 }
34
scale_texcoords(struct r300_fragment_program_compiler * compiler,struct rc_instruction * inst,unsigned state_constant)35 static void scale_texcoords(struct r300_fragment_program_compiler *compiler,
36 struct rc_instruction *inst,
37 unsigned state_constant)
38 {
39 struct rc_instruction *inst_mov;
40
41 unsigned temp = rc_find_free_temporary(&compiler->Base);
42
43 inst_mov = rc_insert_new_instruction(&compiler->Base, inst->Prev);
44
45 inst_mov->U.I.Opcode = RC_OPCODE_MUL;
46 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
47 inst_mov->U.I.DstReg.Index = temp;
48 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
49 inst_mov->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
50 inst_mov->U.I.SrcReg[1].Index =
51 rc_constants_add_state(&compiler->Base.Program.Constants,
52 state_constant, inst->U.I.TexSrcUnit);
53
54 reset_srcreg(&inst->U.I.SrcReg[0]);
55 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
56 inst->U.I.SrcReg[0].Index = temp;
57 }
58
projective_divide(struct r300_fragment_program_compiler * compiler,struct rc_instruction * inst)59 static void projective_divide(struct r300_fragment_program_compiler *compiler,
60 struct rc_instruction *inst)
61 {
62 struct rc_instruction *inst_mul, *inst_rcp;
63
64 unsigned temp = rc_find_free_temporary(&compiler->Base);
65
66 inst_rcp = rc_insert_new_instruction(&compiler->Base, inst->Prev);
67 inst_rcp->U.I.Opcode = RC_OPCODE_RCP;
68 inst_rcp->U.I.DstReg.File = RC_FILE_TEMPORARY;
69 inst_rcp->U.I.DstReg.Index = temp;
70 inst_rcp->U.I.DstReg.WriteMask = RC_MASK_W;
71 inst_rcp->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
72 /* Because the input can be arbitrarily swizzled,
73 * read the component mapped to W. */
74 inst_rcp->U.I.SrcReg[0].Swizzle =
75 RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 3));
76
77 inst_mul = rc_insert_new_instruction(&compiler->Base, inst->Prev);
78 inst_mul->U.I.Opcode = RC_OPCODE_MUL;
79 inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY;
80 inst_mul->U.I.DstReg.Index = temp;
81 inst_mul->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
82 inst_mul->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
83 inst_mul->U.I.SrcReg[1].Index = temp;
84 inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW;
85
86 reset_srcreg(&inst->U.I.SrcReg[0]);
87 inst->U.I.Opcode = RC_OPCODE_TEX;
88 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
89 inst->U.I.SrcReg[0].Index = temp;
90 }
91
92 /**
93 * Transform TEX, TXP, TXB, and KIL instructions in the following ways:
94 * - implement texture compare (shadow extensions)
95 * - extract non-native source / destination operands
96 * - premultiply texture coordinates for RECT
97 * - extract operand swizzles
98 * - introduce a temporary register when write masks are needed
99 */
radeonTransformTEX(struct radeon_compiler * c,struct rc_instruction * inst,void * data)100 int radeonTransformTEX(
101 struct radeon_compiler * c,
102 struct rc_instruction * inst,
103 void* data)
104 {
105 struct r300_fragment_program_compiler *compiler =
106 (struct r300_fragment_program_compiler*)data;
107 rc_wrap_mode wrapmode = compiler->state.unit[inst->U.I.TexSrcUnit].wrap_mode;
108 int is_rect = inst->U.I.TexSrcTarget == RC_TEXTURE_RECT;
109
110 if (inst->U.I.Opcode != RC_OPCODE_TEX &&
111 inst->U.I.Opcode != RC_OPCODE_TXB &&
112 inst->U.I.Opcode != RC_OPCODE_TXP &&
113 inst->U.I.Opcode != RC_OPCODE_TXD &&
114 inst->U.I.Opcode != RC_OPCODE_TXL &&
115 inst->U.I.Opcode != RC_OPCODE_KIL)
116 return 0;
117
118 /* ARB_shadow & EXT_shadow_funcs */
119 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
120 ((c->Program.ShadowSamplers & (1U << inst->U.I.TexSrcUnit)) ||
121 (compiler->state.unit[inst->U.I.TexSrcUnit].compare_mode_enabled))) {
122 rc_compare_func comparefunc = compiler->state.unit[inst->U.I.TexSrcUnit].texture_compare_func;
123
124 if (comparefunc == RC_COMPARE_FUNC_NEVER || comparefunc == RC_COMPARE_FUNC_ALWAYS) {
125 inst->U.I.Opcode = RC_OPCODE_MOV;
126
127 if (comparefunc == RC_COMPARE_FUNC_ALWAYS) {
128 inst->U.I.SrcReg[0] = shadow_pass_value(compiler, inst->U.I.TexSrcUnit);
129 } else {
130 inst->U.I.SrcReg[0] = shadow_fail_value(compiler, inst->U.I.TexSrcUnit);
131 }
132
133 return 1;
134 } else {
135 struct rc_instruction * inst_rcp = NULL;
136 struct rc_instruction *inst_mul, *inst_add, *inst_cmp;
137 unsigned tmp_texsample;
138 unsigned tmp_sum;
139 int pass, fail;
140
141 /* Save the output register. */
142 struct rc_dst_register output_reg = inst->U.I.DstReg;
143 unsigned saturate_mode = inst->U.I.SaturateMode;
144
145 /* Redirect TEX to a new temp. */
146 tmp_texsample = rc_find_free_temporary(c);
147 inst->U.I.SaturateMode = 0;
148 inst->U.I.DstReg.File = RC_FILE_TEMPORARY;
149 inst->U.I.DstReg.Index = tmp_texsample;
150 inst->U.I.DstReg.WriteMask = RC_MASK_XYZW;
151
152 tmp_sum = rc_find_free_temporary(c);
153
154 if (inst->U.I.Opcode == RC_OPCODE_TXP) {
155 /* Compute 1/W. */
156 inst_rcp = rc_insert_new_instruction(c, inst);
157 inst_rcp->U.I.Opcode = RC_OPCODE_RCP;
158 inst_rcp->U.I.DstReg.File = RC_FILE_TEMPORARY;
159 inst_rcp->U.I.DstReg.Index = tmp_sum;
160 inst_rcp->U.I.DstReg.WriteMask = RC_MASK_W;
161 inst_rcp->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
162 inst_rcp->U.I.SrcReg[0].Swizzle =
163 RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 3));
164 }
165
166 /* Divide Z by W (if it's TXP) and saturate. */
167 inst_mul = rc_insert_new_instruction(c, inst_rcp ? inst_rcp : inst);
168 inst_mul->U.I.Opcode = inst->U.I.Opcode == RC_OPCODE_TXP ? RC_OPCODE_MUL : RC_OPCODE_MOV;
169 inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY;
170 inst_mul->U.I.DstReg.Index = tmp_sum;
171 inst_mul->U.I.DstReg.WriteMask = RC_MASK_W;
172 inst_mul->U.I.SaturateMode = RC_SATURATE_ZERO_ONE;
173 inst_mul->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
174 inst_mul->U.I.SrcReg[0].Swizzle =
175 RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 2));
176 if (inst->U.I.Opcode == RC_OPCODE_TXP) {
177 inst_mul->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
178 inst_mul->U.I.SrcReg[1].Index = tmp_sum;
179 inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW;
180 }
181
182 /* Add the depth texture value. */
183 inst_add = rc_insert_new_instruction(c, inst_mul);
184 inst_add->U.I.Opcode = RC_OPCODE_ADD;
185 inst_add->U.I.DstReg.File = RC_FILE_TEMPORARY;
186 inst_add->U.I.DstReg.Index = tmp_sum;
187 inst_add->U.I.DstReg.WriteMask = RC_MASK_W;
188 inst_add->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
189 inst_add->U.I.SrcReg[0].Index = tmp_sum;
190 inst_add->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_WWWW;
191 inst_add->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
192 inst_add->U.I.SrcReg[1].Index = tmp_texsample;
193 inst_add->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_XXXX;
194
195 /* Note that SrcReg[0] is r, SrcReg[1] is tex and:
196 * LESS: r < tex <=> -tex+r < 0
197 * GEQUAL: r >= tex <=> not (-tex+r < 0)
198 * GREATER: r > tex <=> tex-r < 0
199 * LEQUAL: r <= tex <=> not ( tex-r < 0)
200 * EQUAL: GEQUAL
201 * NOTEQUAL:LESS
202 */
203
204 /* This negates either r or tex: */
205 if (comparefunc == RC_COMPARE_FUNC_LESS || comparefunc == RC_COMPARE_FUNC_GEQUAL ||
206 comparefunc == RC_COMPARE_FUNC_EQUAL || comparefunc == RC_COMPARE_FUNC_NOTEQUAL)
207 inst_add->U.I.SrcReg[1].Negate = inst_add->U.I.SrcReg[1].Negate ^ RC_MASK_XYZW;
208 else
209 inst_add->U.I.SrcReg[0].Negate = inst_add->U.I.SrcReg[0].Negate ^ RC_MASK_XYZW;
210
211 /* This negates the whole expression: */
212 if (comparefunc == RC_COMPARE_FUNC_LESS || comparefunc == RC_COMPARE_FUNC_GREATER ||
213 comparefunc == RC_COMPARE_FUNC_NOTEQUAL) {
214 pass = 1;
215 fail = 2;
216 } else {
217 pass = 2;
218 fail = 1;
219 }
220
221 inst_cmp = rc_insert_new_instruction(c, inst_add);
222 inst_cmp->U.I.Opcode = RC_OPCODE_CMP;
223 inst_cmp->U.I.SaturateMode = saturate_mode;
224 inst_cmp->U.I.DstReg = output_reg;
225 inst_cmp->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
226 inst_cmp->U.I.SrcReg[0].Index = tmp_sum;
227 inst_cmp->U.I.SrcReg[0].Swizzle =
228 combine_swizzles(RC_SWIZZLE_WWWW,
229 compiler->state.unit[inst->U.I.TexSrcUnit].texture_swizzle);
230 inst_cmp->U.I.SrcReg[pass] = shadow_pass_value(compiler, inst->U.I.TexSrcUnit);
231 inst_cmp->U.I.SrcReg[fail] = shadow_fail_value(compiler, inst->U.I.TexSrcUnit);
232
233 assert(tmp_texsample != tmp_sum);
234 }
235 }
236
237 /* R300 cannot sample from rectangles and the wrap mode fallback needs
238 * normalized coordinates anyway. */
239 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
240 is_rect && (!c->is_r500 || wrapmode != RC_WRAP_NONE)) {
241 scale_texcoords(compiler, inst, RC_STATE_R300_TEXRECT_FACTOR);
242 inst->U.I.TexSrcTarget = RC_TEXTURE_2D;
243 }
244
245 /* Divide by W if needed. */
246 if (inst->U.I.Opcode == RC_OPCODE_TXP &&
247 (wrapmode == RC_WRAP_REPEAT || wrapmode == RC_WRAP_MIRRORED_REPEAT ||
248 compiler->state.unit[inst->U.I.TexSrcUnit].clamp_and_scale_before_fetch)) {
249 projective_divide(compiler, inst);
250 }
251
252 /* Texture wrap modes don't work on NPOT textures.
253 *
254 * Non-wrapped/clamped texcoords with NPOT are free in HW. Repeat and
255 * mirroring are not. If we need to repeat, we do:
256 *
257 * MUL temp, texcoord, <scaling factor constant>
258 * FRC temp, temp ; Discard integer portion of coords
259 *
260 * This gives us coords in [0, 1].
261 *
262 * Mirroring is trickier. We're going to start out like repeat:
263 *
264 * MUL temp, texcoord, <scaling factor constant> ; De-mirror across axes
265 * MUL temp, temp, 0.5 ; Pattern repeats in [0, 2]
266 * ; so scale to [0, 1]
267 * FRC temp, temp ; Make the pattern repeat
268 * MAD temp, temp, 2, -1 ; Move the pattern to [-1, 1]
269 * ADD temp, 1, -abs(temp) ; Now comes a neat trick: use abs to mirror the pattern.
270 * ; The pattern is backwards, so reverse it (1-x).
271 *
272 * This gives us coords in [0, 1].
273 *
274 * ~ C & M. ;)
275 */
276 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
277 wrapmode != RC_WRAP_NONE) {
278 struct rc_instruction *inst_mov;
279 unsigned temp = rc_find_free_temporary(c);
280
281 if (wrapmode == RC_WRAP_REPEAT) {
282 /* Both instructions will be paired up. */
283 struct rc_instruction *inst_frc = rc_insert_new_instruction(c, inst->Prev);
284
285 inst_frc->U.I.Opcode = RC_OPCODE_FRC;
286 inst_frc->U.I.DstReg.File = RC_FILE_TEMPORARY;
287 inst_frc->U.I.DstReg.Index = temp;
288 inst_frc->U.I.DstReg.WriteMask = RC_MASK_XYZ;
289 inst_frc->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
290 } else if (wrapmode == RC_WRAP_MIRRORED_REPEAT) {
291 /*
292 * Function:
293 * f(v) = 1 - abs(frac(v * 0.5) * 2 - 1)
294 *
295 * Code:
296 * MUL temp, src0, 0.5
297 * FRC temp, temp
298 * MAD temp, temp, 2, -1
299 * ADD temp, 1, -abs(temp)
300 */
301
302 struct rc_instruction *inst_mul, *inst_frc, *inst_mad, *inst_add;
303 unsigned two, two_swizzle;
304
305 inst_mul = rc_insert_new_instruction(c, inst->Prev);
306
307 inst_mul->U.I.Opcode = RC_OPCODE_MUL;
308 inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY;
309 inst_mul->U.I.DstReg.Index = temp;
310 inst_mul->U.I.DstReg.WriteMask = RC_MASK_XYZ;
311 inst_mul->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
312 inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_HHHH;
313
314 inst_frc = rc_insert_new_instruction(c, inst->Prev);
315
316 inst_frc->U.I.Opcode = RC_OPCODE_FRC;
317 inst_frc->U.I.DstReg.File = RC_FILE_TEMPORARY;
318 inst_frc->U.I.DstReg.Index = temp;
319 inst_frc->U.I.DstReg.WriteMask = RC_MASK_XYZ;
320 inst_frc->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
321 inst_frc->U.I.SrcReg[0].Index = temp;
322 inst_frc->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZ0;
323
324 two = rc_constants_add_immediate_scalar(&c->Program.Constants, 2, &two_swizzle);
325 inst_mad = rc_insert_new_instruction(c, inst->Prev);
326
327 inst_mad->U.I.Opcode = RC_OPCODE_MAD;
328 inst_mad->U.I.DstReg.File = RC_FILE_TEMPORARY;
329 inst_mad->U.I.DstReg.Index = temp;
330 inst_mad->U.I.DstReg.WriteMask = RC_MASK_XYZ;
331 inst_mad->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
332 inst_mad->U.I.SrcReg[0].Index = temp;
333 inst_mad->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZ0;
334 inst_mad->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
335 inst_mad->U.I.SrcReg[1].Index = two;
336 inst_mad->U.I.SrcReg[1].Swizzle = two_swizzle;
337 inst_mad->U.I.SrcReg[2].Swizzle = RC_SWIZZLE_1111;
338 inst_mad->U.I.SrcReg[2].Negate = RC_MASK_XYZ;
339
340 inst_add = rc_insert_new_instruction(c, inst->Prev);
341
342 inst_add->U.I.Opcode = RC_OPCODE_ADD;
343 inst_add->U.I.DstReg.File = RC_FILE_TEMPORARY;
344 inst_add->U.I.DstReg.Index = temp;
345 inst_add->U.I.DstReg.WriteMask = RC_MASK_XYZ;
346 inst_add->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_1111;
347 inst_add->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
348 inst_add->U.I.SrcReg[1].Index = temp;
349 inst_add->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_XYZ0;
350 inst_add->U.I.SrcReg[1].Abs = 1;
351 inst_add->U.I.SrcReg[1].Negate = RC_MASK_XYZ;
352 } else if (wrapmode == RC_WRAP_MIRRORED_CLAMP) {
353 /*
354 * Mirrored clamp modes are bloody simple, we just use abs
355 * to mirror [0, 1] into [-1, 0]. This works for
356 * all modes i.e. CLAMP, CLAMP_TO_EDGE, and CLAMP_TO_BORDER.
357 */
358 struct rc_instruction *inst_mov;
359
360 inst_mov = rc_insert_new_instruction(c, inst->Prev);
361
362 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
363 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
364 inst_mov->U.I.DstReg.Index = temp;
365 inst_mov->U.I.DstReg.WriteMask = RC_MASK_XYZ;
366 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
367 inst_mov->U.I.SrcReg[0].Abs = 1;
368 }
369
370 /* Preserve W for TXP/TXB. */
371 inst_mov = rc_insert_new_instruction(c, inst->Prev);
372
373 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
374 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
375 inst_mov->U.I.DstReg.Index = temp;
376 inst_mov->U.I.DstReg.WriteMask = RC_MASK_W;
377 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
378
379 reset_srcreg(&inst->U.I.SrcReg[0]);
380 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
381 inst->U.I.SrcReg[0].Index = temp;
382 }
383
384 /* NPOT -> POT conversion for 3D textures. */
385 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
386 compiler->state.unit[inst->U.I.TexSrcUnit].clamp_and_scale_before_fetch) {
387 struct rc_instruction *inst_mov;
388 unsigned temp = rc_find_free_temporary(c);
389
390 /* Saturate XYZ. */
391 inst_mov = rc_insert_new_instruction(c, inst->Prev);
392 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
393 inst_mov->U.I.SaturateMode = RC_SATURATE_ZERO_ONE;
394 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
395 inst_mov->U.I.DstReg.Index = temp;
396 inst_mov->U.I.DstReg.WriteMask = RC_MASK_XYZ;
397 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
398
399 /* Copy W. */
400 inst_mov = rc_insert_new_instruction(c, inst->Prev);
401 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
402 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
403 inst_mov->U.I.DstReg.Index = temp;
404 inst_mov->U.I.DstReg.WriteMask = RC_MASK_W;
405 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
406
407 reset_srcreg(&inst->U.I.SrcReg[0]);
408 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
409 inst->U.I.SrcReg[0].Index = temp;
410
411 scale_texcoords(compiler, inst, RC_STATE_R300_TEXSCALE_FACTOR);
412 }
413
414 /* Cannot write texture to output registers or with saturate (all chips),
415 * or with masks (non-r500). */
416 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
417 (inst->U.I.DstReg.File != RC_FILE_TEMPORARY ||
418 inst->U.I.SaturateMode ||
419 (!c->is_r500 && inst->U.I.DstReg.WriteMask != RC_MASK_XYZW))) {
420 struct rc_instruction * inst_mov = rc_insert_new_instruction(c, inst);
421
422 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
423 inst_mov->U.I.SaturateMode = inst->U.I.SaturateMode;
424 inst_mov->U.I.DstReg = inst->U.I.DstReg;
425 inst_mov->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
426 inst_mov->U.I.SrcReg[0].Index = rc_find_free_temporary(c);
427
428 inst->U.I.SaturateMode = 0;
429 inst->U.I.DstReg.File = RC_FILE_TEMPORARY;
430 inst->U.I.DstReg.Index = inst_mov->U.I.SrcReg[0].Index;
431 inst->U.I.DstReg.WriteMask = RC_MASK_XYZW;
432 }
433
434 /* Cannot read texture coordinate from constants file */
435 if (inst->U.I.SrcReg[0].File != RC_FILE_TEMPORARY && inst->U.I.SrcReg[0].File != RC_FILE_INPUT) {
436 struct rc_instruction * inst_mov = rc_insert_new_instruction(c, inst->Prev);
437
438 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
439 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
440 inst_mov->U.I.DstReg.Index = rc_find_free_temporary(c);
441 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
442
443 reset_srcreg(&inst->U.I.SrcReg[0]);
444 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
445 inst->U.I.SrcReg[0].Index = inst_mov->U.I.DstReg.Index;
446 }
447
448 return 1;
449 }
450