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800eeca4
JW
1//
2// Detect WAW violations. Cases taken from DV tables.
3//
4.text
5 .explicit
6// AR[BSP]
7 mov ar.bsp = r0
8 mov ar.bsp = r1
9 ;;
10// AR[BSPSTORE]
11 mov ar.bspstore = r2
12 mov ar.bspstore = r3
13 ;;
14
15// AR[CCV]
16 mov ar.ccv = r4
17 mov ar.ccv = r4
18 ;;
19
20// AR[EC]
21 br.wtop.sptk L
22 mov ar.ec = r0
23 ;;
24
25// AR[FPSR].sf0.controls
26 mov ar.fpsr = r0
27 fsetc.s0 0x7f, 0x0f
28 ;;
29
30// AR[FPSR].sf1.controls
31 mov ar.fpsr = r0
32 fsetc.s1 0x7f, 0x0f
33 ;;
34
35// AR[FPSR].sf2.controls
36 mov ar.fpsr = r0
37 fsetc.s2 0x7f, 0x0f
38 ;;
39
40// AR[FPSR].sf3.controls
41 mov ar.fpsr = r0
42 fsetc.s3 0x7f, 0x0f
43 ;;
44
45// AR[FPSR].sf0.flags
46 fcmp.eq.s0 p1, p2 = f3, f4
47 fcmp.eq.s0 p3, p4 = f3, f4 // no DV here
48 ;;
49 fcmp.eq.s0 p1, p2 = f3, f4
50 fclrf.s0
51 ;;
52
53// AR[FPSR].sf1.flags
54 fcmp.eq.s1 p1, p2 = f3, f4
55 fcmp.eq.s1 p3, p4 = f3, f4 // no DV here
56 ;;
57 fcmp.eq.s1 p1, p2 = f3, f4
58 fclrf.s1
59 ;;
60
61// AR[FPSR].sf2.flags
62 fcmp.eq.s2 p1, p2 = f3, f4
63 fcmp.eq.s2 p3, p4 = f3, f4 // no DV here
64 ;;
65 fcmp.eq.s2 p1, p2 = f3, f4
66 fclrf.s2
67 ;;
68
69// AR[FPSR].sf3.flags
70 fcmp.eq.s3 p1, p2 = f3, f4
71 fcmp.eq.s3 p3, p4 = f3, f4 // no DV here
72 ;;
73 fcmp.eq.s3 p1, p2 = f3, f4
74 fclrf.s3
75 ;;
76
77// AR[FPSR].traps/rv plus all controls/flags
78 mov ar.fpsr = r0
79 mov ar.fpsr = r0
80 ;;
81
82// AR[ITC]
83 mov ar.itc = r1
84 mov ar.itc = r1
85 ;;
86
87// AR[K]
88 mov ar.k2 = r3
89 mov ar.k2 = r3
90 ;;
91
92// AR[LC]
93 br.cloop.sptk L
94 mov ar.lc = r0
95 ;;
96
97// AR[PFS]
98 mov ar.pfs = r0
99 br.call.sptk b0 = L
100 ;;
101
102// AR[RNAT] (see also AR[BSPSTORE])
103 mov ar.rnat = r8
104 mov ar.rnat = r8
105 ;;
106
107// AR[RSC]
108 mov ar.rsc = r10
109 mov ar.rsc = r10
110 ;;
111
112// AR[UNAT]
113 mov ar.unat = r12
114 st8.spill [r0] = r1
115 ;;
116
117// AR%
118 mov ar48 = r0
119 mov ar48 = r0
120 ;;
121
122// BR%
123 mov b1 = r0
124 mov b1 = r1
125 ;;
126
127// CFM (and others)
128 br.wtop.sptk L
129 br.wtop.sptk L
130 ;;
131
132// CR[CMCV]
133 mov cr.cmcv = r1
134 mov cr.cmcv = r2
135 ;;
136
137// CR[DCR]
138 mov cr.dcr = r3
139 mov cr.dcr = r3
140 ;;
141
142// CR[EOI] (and InService)
143 mov cr.eoi = r0
144 mov cr.eoi = r0
145 ;;
146 srlz.d
147
148// CR[GPTA]
149 mov cr.gpta = r6
150 mov cr.gpta = r7
151 ;;
152
153// CR[IFA]
154 mov cr.ifa = r9
155 mov cr.ifa = r10
156 ;;
157
158// CR[IFS]
159 mov cr.ifs = r11
160 cover
161 ;;
162
163// CR[IHA]
164 mov cr.iha = r13
165 mov cr.iha = r14
166 ;;
167
168// CR[IIM]
169 mov cr.iim = r15
170 mov cr.iim = r16
171 ;;
172
173// CR[IIP]
174 mov cr.iip = r17
175 mov cr.iip = r17
176 ;;
177
178// CR[IIPA]
179 mov cr.iipa = r19
180 mov cr.iipa = r20
181 ;;
182
183// CR[IPSR]
184 mov cr.ipsr = r21
185 mov cr.ipsr = r22
186 ;;
187
188// CR[IRR%] (and others)
189 mov r0 = cr.ivr
190 mov r1 = cr.ivr
191 ;;
192
193// CR[ISR]
194 mov cr.isr = r24
195 mov cr.isr = r25
196 ;;
197
198// CR[ITIR]
199 mov cr.itir = r26
200 mov cr.itir = r27
201 ;;
202
203// CR[ITM]
204 mov cr.itm = r28
205 mov cr.itm = r29
206 ;;
207
208// CR[ITV]
209 mov cr.itv = r0
210 mov cr.itv = r1
211 ;;
212
213// CR[IVA]
214 mov cr.iva = r0
215 mov cr.iva = r1
216 ;;
217
218// CR[IVR] (no explicit writers)
219
220// CR[LID]
221 mov cr.lid = r0
222 mov cr.lid = r1
223 ;;
224
225// CR[LRR%]
226 mov cr.lrr0 = r0
227 mov cr.lrr1 = r0 // no DV here
228 ;;
229 mov cr.lrr0 = r0
230 mov cr.lrr0 = r0
231 ;;
232
233// CR[PMV]
234 mov cr.pmv = r0
235 mov cr.pmv = r1
236 ;;
237
238// CR[PTA]
239 mov cr.pta = r0
240 mov cr.pta = r1
241 ;;
242
243// CR[TPR]
244 mov cr.tpr = r0
245 mov cr.tpr = r1
246 ;;
247
248// DBR#
249 mov dbr[r1] = r1
250 mov dbr[r1] = r2
251 ;;
252 srlz.d
253
254// DTC
255 ptc.e r0
256 ptc.e r1 // no DVs here
257 ;;
258 ptc.e r0 // (and others)
259 itc.i r0
260 ;;
261 srlz.d
262
263// DTC_LIMIT
264 ptc.g r0, r1 // NOTE: GAS automatically emits stops after
265 ptc.ga r2, r3 // ptc.g/ptc.ga, so this conflict is no
266 ;; // longer possible in GAS-generated assembly
267 srlz.d
268
269// DTR
270 itr.d dtr[r0] = r1 // (and others)
271 ptr.d r2, r3
272 ;;
273 srlz.d
274
275// FR%
276 mov f3 = f2
277 ldfs.c.clr f3 = [r1]
278 ;;
279
280// GR%
281 mov r2 = r0
282 ld8.c.clr r2 = [r1]
283 ;;
284
285// IBR#
286 mov ibr[r0] = r2
287 mov ibr[r1] = r2
288 ;;
289
290// InService
291 mov cr.eoi = r0
292 mov r1 = cr.ivr
293 ;;
294 srlz.d
295
296// ITC
297 ptc.e r0
298 itc.i r1
299 ;;
300 srlz.i
301 ;;
302
303// ITR
304 itr.i itr[r0] = r1
305 ptr.i r2, r3
306 ;;
307 srlz.i
308 ;;
309
310// PKR#
311 .reg.val r1, 0x1
312 .reg.val r2, ~0x1
313 mov pkr[r1] = r1
314 mov pkr[r2] = r1 // no DV here
315 ;;
316 mov pkr[r1] = r1
317 mov pkr[r1] = r1
318 ;;
319
320// PMC#
321 mov pmc[r3] = r1
322 mov pmc[r4] = r1
323 ;;
324
325// PMD#
326 mov pmd[r3] = r1
327 mov pmd[r4] = r1
328 ;;
329
139368c9 330// PR%, 1 - 15
800eeca4
JW
331 cmp.eq p1, p0 = r0, r1
332 cmp.eq p1, p0 = r2, r3
333 ;;
334 fcmp.eq p1, p2 = f2, f3
335 fcmp.eq p1, p3 = f2, f3
336 ;;
337 cmp.eq.and p1, p2 = r0, r1
338 cmp.eq.or p1, p3 = r2, r3
339 ;;
340 cmp.eq.or p1, p3 = r2, r3
341 cmp.eq.and p1, p2 = r0, r1
342 ;;
343 cmp.eq.and p1, p2 = r0, r1
344 cmp.eq.and p1, p3 = r2, r3 // no DV here
345 ;;
346 cmp.eq.or p1, p2 = r0, r1
347 cmp.eq.or p1, p3 = r2, r3 // no DV here
348 ;;
349
350// PR63
351 br.wtop.sptk L
352 br.wtop.sptk L
353 ;;
354 cmp.eq p63, p0 = r0, r1
355 cmp.eq p63, p0 = r2, r3
356 ;;
357 fcmp.eq p63, p2 = f2, f3
358 fcmp.eq p63, p3 = f2, f3
359 ;;
360 cmp.eq.and p63, p2 = r0, r1
361 cmp.eq.or p63, p3 = r2, r3
362 ;;
363 cmp.eq.or p63, p3 = r2, r3
364 cmp.eq.and p63, p2 = r0, r1
365 ;;
366 cmp.eq.and p63, p2 = r0, r1
367 cmp.eq.and p63, p3 = r2, r3 // no DV here
368 ;;
369 cmp.eq.or p63, p2 = r0, r1
370 cmp.eq.or p63, p3 = r2, r3 // no DV here
371 ;;
372
373// PSR.ac
374 rum (1<<3)
375 rum (1<<3)
376 ;;
377
378// PSR.be
379 rum (1<<1)
380 rum (1<<1)
381 ;;
382
383// PSR.bn
384 bsw.0 // GAS automatically emits a stop after bsw.n
385 bsw.0 // so this conflict is avoided
386 ;;
387
388// PSR.cpl
389 epc
390 br.ret.sptk b0
391 ;;
392
393// PSR.da (rfi is the only writer)
394// PSR.db (and others)
395 mov psr.l = r0
396 mov psr.l = r1
397 ;;
398 srlz.d
399
400// PSR.dd (rfi is the only writer)
401
402// PSR.dfh
403 ssm (1<<19)
404 ssm (1<<19)
405 ;;
406 srlz.d
407
408// PSR.dfl
409 ssm (1<<18)
410 ssm (1<<18)
411 ;;
412 srlz.d
413
414// PSR.di
415 rsm (1<<22)
416 rsm (1<<22)
417 ;;
418
419// PSR.dt
420 rsm (1<<17)
421 rsm (1<<17)
422 ;;
423
424// PSR.ed (rfi is the only writer)
425// PSR.i
426 ssm (1<<14)
427 ssm (1<<14)
428 ;;
429
430// PSR.ia (no DV semantics)
431// PSR.ic
432 ssm (1<<13)
433 ssm (1<<13)
434 ;;
435
436// PSR.id (rfi is the only writer)
437// PSR.is (br.ia and rfi are the only writers)
438// PSR.it (rfi is the only writer)
439// PSR.lp (see PSR.db)
440
441// PSR.mc (rfi is the only writer)
442// PSR.mfh
443 mov f32 = f33
444 mov r0 = psr
445 ;;
446 ssm (1<<5)
447 ssm (1<<5)
448 ;;
449 ssm (1<<5)
450 mov psr.um = r0
451 ;;
452 rum (1<<5)
453 rum (1<<5)
454 ;;
455 mov f32 = f33
456 mov f34 = f35 // no DV here
457 ;;
458
459// PSR.mfl
460 mov f2 = f3
461 mov r0 = psr
462 ;;
463 ssm (1<<4)
464 ssm (1<<4)
465 ;;
466 ssm (1<<4)
467 mov psr.um = r0
468 ;;
469 rum (1<<4)
470 rum (1<<4)
471 ;;
472 mov f2 = f3
473 mov f4 = f5 // no DV here
474 ;;
475
476// PSR.pk
477 rsm (1<<15)
478 rsm (1<<15)
479 ;;
480
481// PSR.pp
482 rsm (1<<21)
483 rsm (1<<21)
484 ;;
485
486// PSR.ri (no DV semantics)
487// PSR.rt (see PSR.db)
488
489// PSR.si
490 rsm (1<<23)
491 ssm (1<<23)
492 ;;
493
494// PSR.sp
495 ssm (1<<20)
496 rsm (1<<20)
497 ;;
498 srlz.d
499
500// PSR.ss (rfi is the only writer)
501// PSR.tb (see PSR.db)
502
503// PSR.up
504 rsm (1<<2)
505 rsm (1<<2)
506 ;;
507 rum (1<<2)
508 mov psr.um = r0
509 ;;
510
511// RR#
512 mov rr[r2] = r1
513 mov rr[r2] = r3
514 ;;
139368c9 515
7484b8e6
TW
516// PR, additional cases (or.andcm and and.orcm interaction)
517 cmp.eq.or.andcm p6, p7 = 1, r32
518 cmp.eq.or.andcm p6, p7 = 5, r36 // no DV here
519 ;;
520 cmp.eq.and.orcm p6, p7 = 1, r32
521 cmp.eq.and.orcm p6, p7 = 5, r36 // no DV here
522 ;;
523 cmp.eq.or.andcm p63, p7 = 1, r32
524 cmp.eq.or.andcm p63, p7 = 5, r36 // no DV here
525 ;;
526 cmp.eq.or.andcm p6, p63 = 1, r32
527 cmp.eq.or.andcm p6, p63 = 5, r36 // no DV here
528 ;;
529 cmp.eq.and.orcm p63, p7 = 1, r32
530 cmp.eq.and.orcm p63, p7 = 5, r36 // no DV here
531 ;;
532 cmp.eq.and.orcm p6, p63 = 1, r32
533 cmp.eq.and.orcm p6, p63 = 5, r36 // no DV here
534 ;;
535 cmp.eq.or.andcm p6, p7 = 1, r32
536 cmp.eq.and.orcm p6, p7 = 5, r36
537 ;;
538 cmp.eq.or.andcm p63, p7 = 1, r32
539 cmp.eq.and.orcm p63, p7 = 5, r36
540 ;;
541 cmp.eq.or.andcm p6, p63 = 1, r32
542 cmp.eq.and.orcm p6, p63 = 5, r36
543 ;;
139368c9
JW
544
545// PR%, 16 - 62
546 cmp.eq p21, p0 = r0, r1
547 cmp.eq p21, p0 = r2, r3
548 ;;
549 fcmp.eq p21, p22 = f2, f3
550 fcmp.eq p21, p23 = f2, f3
551 ;;
552 cmp.eq.and p21, p22 = r0, r1
553 cmp.eq.or p21, p23 = r2, r3
554 ;;
555 cmp.eq.or p21, p23 = r2, r3
556 cmp.eq.and p21, p22 = r0, r1
557 ;;
558 cmp.eq.and p21, p22 = r0, r1
559 cmp.eq.and p21, p23 = r2, r3 // no DV here
560 ;;
561 cmp.eq.or p21, p22 = r0, r1
562 cmp.eq.or p21, p23 = r2, r3 // no DV here
563 ;;
564
565// RSE
566
567L: