1//===-- X86Schedule.td - X86 Scheduling Definitions --------*- tablegen -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10//===----------------------------------------------------------------------===//
11// Instruction Itinerary classes used for X86
12def IIC_DEFAULT     : InstrItinClass;
13def IIC_ALU_MEM     : InstrItinClass;
14def IIC_ALU_NONMEM  : InstrItinClass;
15def IIC_LEA         : InstrItinClass;
16def IIC_LEA_16      : InstrItinClass;
17def IIC_MUL8        : InstrItinClass;
18def IIC_MUL16_MEM   : InstrItinClass;
19def IIC_MUL16_REG   : InstrItinClass;
20def IIC_MUL32_MEM   : InstrItinClass;
21def IIC_MUL32_REG   : InstrItinClass;
22def IIC_MUL64       : InstrItinClass;
23// imul by al, ax, eax, tax
24def IIC_IMUL8       : InstrItinClass;
25def IIC_IMUL16_MEM  : InstrItinClass;
26def IIC_IMUL16_REG  : InstrItinClass;
27def IIC_IMUL32_MEM  : InstrItinClass;
28def IIC_IMUL32_REG  : InstrItinClass;
29def IIC_IMUL64      : InstrItinClass;
30// imul reg by reg|mem
31def IIC_IMUL16_RM   : InstrItinClass;
32def IIC_IMUL16_RR   : InstrItinClass;
33def IIC_IMUL32_RM   : InstrItinClass;
34def IIC_IMUL32_RR   : InstrItinClass;
35def IIC_IMUL64_RM   : InstrItinClass;
36def IIC_IMUL64_RR   : InstrItinClass;
37// imul reg = reg/mem * imm
38def IIC_IMUL16_RMI  : InstrItinClass;
39def IIC_IMUL16_RRI  : InstrItinClass;
40def IIC_IMUL32_RMI  : InstrItinClass;
41def IIC_IMUL32_RRI  : InstrItinClass;
42def IIC_IMUL64_RMI  : InstrItinClass;
43def IIC_IMUL64_RRI  : InstrItinClass;
44// div
45def IIC_DIV8_MEM    : InstrItinClass;
46def IIC_DIV8_REG    : InstrItinClass;
47def IIC_DIV16       : InstrItinClass;
48def IIC_DIV32       : InstrItinClass;
49def IIC_DIV64       : InstrItinClass;
50// idiv
51def IIC_IDIV8       : InstrItinClass;
52def IIC_IDIV16      : InstrItinClass;
53def IIC_IDIV32      : InstrItinClass;
54def IIC_IDIV64      : InstrItinClass;
55// neg/not/inc/dec
56def IIC_UNARY_REG   : InstrItinClass;
57def IIC_UNARY_MEM   : InstrItinClass;
58// add/sub/and/or/xor/adc/sbc/cmp/test
59def IIC_BIN_MEM     : InstrItinClass;
60def IIC_BIN_NONMEM  : InstrItinClass;
61// shift/rotate
62def IIC_SR          : InstrItinClass;
63// shift double
64def IIC_SHD16_REG_IM : InstrItinClass;
65def IIC_SHD16_REG_CL : InstrItinClass;
66def IIC_SHD16_MEM_IM : InstrItinClass;
67def IIC_SHD16_MEM_CL : InstrItinClass;
68def IIC_SHD32_REG_IM : InstrItinClass;
69def IIC_SHD32_REG_CL : InstrItinClass;
70def IIC_SHD32_MEM_IM : InstrItinClass;
71def IIC_SHD32_MEM_CL : InstrItinClass;
72def IIC_SHD64_REG_IM : InstrItinClass;
73def IIC_SHD64_REG_CL : InstrItinClass;
74def IIC_SHD64_MEM_IM : InstrItinClass;
75def IIC_SHD64_MEM_CL : InstrItinClass;
76// cmov
77def IIC_CMOV16_RM : InstrItinClass;
78def IIC_CMOV16_RR : InstrItinClass;
79def IIC_CMOV32_RM : InstrItinClass;
80def IIC_CMOV32_RR : InstrItinClass;
81def IIC_CMOV64_RM : InstrItinClass;
82def IIC_CMOV64_RR : InstrItinClass;
83// set
84def IIC_SET_R : InstrItinClass;
85def IIC_SET_M : InstrItinClass;
86// jmp/jcc/jcxz
87def IIC_Jcc : InstrItinClass;
88def IIC_JCXZ : InstrItinClass;
89def IIC_JMP_REL : InstrItinClass;
90def IIC_JMP_REG : InstrItinClass;
91def IIC_JMP_MEM : InstrItinClass;
92def IIC_JMP_FAR_MEM : InstrItinClass;
93def IIC_JMP_FAR_PTR : InstrItinClass;
94// loop
95def IIC_LOOP : InstrItinClass;
96def IIC_LOOPE : InstrItinClass;
97def IIC_LOOPNE : InstrItinClass;
98// call
99def IIC_CALL_RI : InstrItinClass;
100def IIC_CALL_MEM : InstrItinClass;
101def IIC_CALL_FAR_MEM : InstrItinClass;
102def IIC_CALL_FAR_PTR : InstrItinClass;
103// ret
104def IIC_RET : InstrItinClass;
105def IIC_RET_IMM : InstrItinClass;
106//sign extension movs
107def IIC_MOVSX : InstrItinClass;
108def IIC_MOVSX_R16_R8 : InstrItinClass;
109def IIC_MOVSX_R16_M8 : InstrItinClass;
110def IIC_MOVSX_R16_R16 : InstrItinClass;
111def IIC_MOVSX_R32_R32 : InstrItinClass;
112//zero extension movs
113def IIC_MOVZX : InstrItinClass;
114def IIC_MOVZX_R16_R8 : InstrItinClass;
115def IIC_MOVZX_R16_M8 : InstrItinClass;
116
117def IIC_REP_MOVS : InstrItinClass;
118def IIC_REP_STOS : InstrItinClass;
119
120// SSE scalar/parallel binary operations
121def IIC_SSE_ALU_F32S_RR : InstrItinClass;
122def IIC_SSE_ALU_F32S_RM : InstrItinClass;
123def IIC_SSE_ALU_F64S_RR : InstrItinClass;
124def IIC_SSE_ALU_F64S_RM : InstrItinClass;
125def IIC_SSE_MUL_F32S_RR : InstrItinClass;
126def IIC_SSE_MUL_F32S_RM : InstrItinClass;
127def IIC_SSE_MUL_F64S_RR : InstrItinClass;
128def IIC_SSE_MUL_F64S_RM : InstrItinClass;
129def IIC_SSE_DIV_F32S_RR : InstrItinClass;
130def IIC_SSE_DIV_F32S_RM : InstrItinClass;
131def IIC_SSE_DIV_F64S_RR : InstrItinClass;
132def IIC_SSE_DIV_F64S_RM : InstrItinClass;
133def IIC_SSE_ALU_F32P_RR : InstrItinClass;
134def IIC_SSE_ALU_F32P_RM : InstrItinClass;
135def IIC_SSE_ALU_F64P_RR : InstrItinClass;
136def IIC_SSE_ALU_F64P_RM : InstrItinClass;
137def IIC_SSE_MUL_F32P_RR : InstrItinClass;
138def IIC_SSE_MUL_F32P_RM : InstrItinClass;
139def IIC_SSE_MUL_F64P_RR : InstrItinClass;
140def IIC_SSE_MUL_F64P_RM : InstrItinClass;
141def IIC_SSE_DIV_F32P_RR : InstrItinClass;
142def IIC_SSE_DIV_F32P_RM : InstrItinClass;
143def IIC_SSE_DIV_F64P_RR : InstrItinClass;
144def IIC_SSE_DIV_F64P_RM : InstrItinClass;
145
146def IIC_SSE_COMIS_RR : InstrItinClass;
147def IIC_SSE_COMIS_RM : InstrItinClass;
148
149def IIC_SSE_HADDSUB_RR : InstrItinClass;
150def IIC_SSE_HADDSUB_RM : InstrItinClass;
151
152def IIC_SSE_BIT_P_RR  : InstrItinClass;
153def IIC_SSE_BIT_P_RM  : InstrItinClass;
154
155def IIC_SSE_INTALU_P_RR  : InstrItinClass;
156def IIC_SSE_INTALU_P_RM  : InstrItinClass;
157def IIC_SSE_INTALUQ_P_RR  : InstrItinClass;
158def IIC_SSE_INTALUQ_P_RM  : InstrItinClass;
159
160def IIC_SSE_INTMUL_P_RR : InstrItinClass;
161def IIC_SSE_INTMUL_P_RM : InstrItinClass;
162
163def IIC_SSE_INTSH_P_RR : InstrItinClass;
164def IIC_SSE_INTSH_P_RM : InstrItinClass;
165def IIC_SSE_INTSH_P_RI : InstrItinClass;
166
167def IIC_SSE_CMPP_RR : InstrItinClass;
168def IIC_SSE_CMPP_RM : InstrItinClass;
169
170def IIC_SSE_SHUFP : InstrItinClass;
171def IIC_SSE_PSHUF : InstrItinClass;
172
173def IIC_SSE_UNPCK : InstrItinClass;
174
175def IIC_SSE_MOVMSK : InstrItinClass;
176def IIC_SSE_MASKMOV : InstrItinClass;
177
178def IIC_SSE_PEXTRW : InstrItinClass;
179def IIC_SSE_PINSRW : InstrItinClass;
180
181def IIC_SSE_PABS_RR : InstrItinClass;
182def IIC_SSE_PABS_RM : InstrItinClass;
183
184def IIC_SSE_SQRTP_RR : InstrItinClass;
185def IIC_SSE_SQRTP_RM : InstrItinClass;
186def IIC_SSE_SQRTS_RR : InstrItinClass;
187def IIC_SSE_SQRTS_RM : InstrItinClass;
188
189def IIC_SSE_RCPP_RR : InstrItinClass;
190def IIC_SSE_RCPP_RM : InstrItinClass;
191def IIC_SSE_RCPS_RR : InstrItinClass;
192def IIC_SSE_RCPS_RM : InstrItinClass;
193
194def IIC_SSE_MOV_S_RR : InstrItinClass;
195def IIC_SSE_MOV_S_RM : InstrItinClass;
196def IIC_SSE_MOV_S_MR : InstrItinClass;
197
198def IIC_SSE_MOVA_P_RR : InstrItinClass;
199def IIC_SSE_MOVA_P_RM : InstrItinClass;
200def IIC_SSE_MOVA_P_MR : InstrItinClass;
201
202def IIC_SSE_MOVU_P_RR : InstrItinClass;
203def IIC_SSE_MOVU_P_RM : InstrItinClass;
204def IIC_SSE_MOVU_P_MR : InstrItinClass;
205
206def IIC_SSE_MOVDQ : InstrItinClass;
207def IIC_SSE_MOVD_ToGP : InstrItinClass;
208def IIC_SSE_MOVQ_RR : InstrItinClass;
209
210def IIC_SSE_MOV_LH : InstrItinClass;
211
212def IIC_SSE_LDDQU : InstrItinClass;
213
214def IIC_SSE_MOVNT : InstrItinClass;
215
216def IIC_SSE_PHADDSUBD_RR : InstrItinClass;
217def IIC_SSE_PHADDSUBD_RM : InstrItinClass;
218def IIC_SSE_PHADDSUBSW_RR : InstrItinClass;
219def IIC_SSE_PHADDSUBSW_RM : InstrItinClass;
220def IIC_SSE_PHADDSUBW_RR : InstrItinClass;
221def IIC_SSE_PHADDSUBW_RM : InstrItinClass;
222def IIC_SSE_PSHUFB_RR : InstrItinClass;
223def IIC_SSE_PSHUFB_RM : InstrItinClass;
224def IIC_SSE_PSIGN_RR : InstrItinClass;
225def IIC_SSE_PSIGN_RM : InstrItinClass;
226
227def IIC_SSE_PMADD : InstrItinClass;
228def IIC_SSE_PMULHRSW : InstrItinClass;
229def IIC_SSE_PALIGNR : InstrItinClass;
230def IIC_SSE_MWAIT : InstrItinClass;
231def IIC_SSE_MONITOR : InstrItinClass;
232
233def IIC_SSE_PREFETCH : InstrItinClass;
234def IIC_SSE_PAUSE : InstrItinClass;
235def IIC_SSE_LFENCE : InstrItinClass;
236def IIC_SSE_MFENCE : InstrItinClass;
237def IIC_SSE_SFENCE : InstrItinClass;
238def IIC_SSE_LDMXCSR : InstrItinClass;
239def IIC_SSE_STMXCSR : InstrItinClass;
240
241def IIC_SSE_CVT_PD_RR : InstrItinClass;
242def IIC_SSE_CVT_PD_RM : InstrItinClass;
243def IIC_SSE_CVT_PS_RR : InstrItinClass;
244def IIC_SSE_CVT_PS_RM : InstrItinClass;
245def IIC_SSE_CVT_PI2PS_RR : InstrItinClass;
246def IIC_SSE_CVT_PI2PS_RM : InstrItinClass;
247def IIC_SSE_CVT_Scalar_RR : InstrItinClass;
248def IIC_SSE_CVT_Scalar_RM : InstrItinClass;
249def IIC_SSE_CVT_SS2SI32_RM : InstrItinClass;
250def IIC_SSE_CVT_SS2SI32_RR : InstrItinClass;
251def IIC_SSE_CVT_SS2SI64_RM : InstrItinClass;
252def IIC_SSE_CVT_SS2SI64_RR : InstrItinClass;
253def IIC_SSE_CVT_SD2SI_RM : InstrItinClass;
254def IIC_SSE_CVT_SD2SI_RR : InstrItinClass;
255
256// MMX
257def IIC_MMX_MOV_MM_RM : InstrItinClass;
258def IIC_MMX_MOV_REG_MM : InstrItinClass;
259def IIC_MMX_MOVQ_RM : InstrItinClass;
260def IIC_MMX_MOVQ_RR : InstrItinClass;
261
262def IIC_MMX_ALU_RM : InstrItinClass;
263def IIC_MMX_ALU_RR : InstrItinClass;
264def IIC_MMX_ALUQ_RM : InstrItinClass;
265def IIC_MMX_ALUQ_RR : InstrItinClass;
266def IIC_MMX_PHADDSUBW_RM : InstrItinClass;
267def IIC_MMX_PHADDSUBW_RR : InstrItinClass;
268def IIC_MMX_PHADDSUBD_RM : InstrItinClass;
269def IIC_MMX_PHADDSUBD_RR : InstrItinClass;
270def IIC_MMX_PMUL : InstrItinClass;
271def IIC_MMX_MISC_FUNC_MEM : InstrItinClass;
272def IIC_MMX_MISC_FUNC_REG : InstrItinClass;
273def IIC_MMX_PSADBW : InstrItinClass;
274def IIC_MMX_SHIFT_RI : InstrItinClass;
275def IIC_MMX_SHIFT_RM : InstrItinClass;
276def IIC_MMX_SHIFT_RR : InstrItinClass;
277def IIC_MMX_UNPCK_H_RM : InstrItinClass;
278def IIC_MMX_UNPCK_H_RR : InstrItinClass;
279def IIC_MMX_UNPCK_L : InstrItinClass;
280def IIC_MMX_PCK_RM : InstrItinClass;
281def IIC_MMX_PCK_RR : InstrItinClass;
282def IIC_MMX_PSHUF : InstrItinClass;
283def IIC_MMX_PEXTR : InstrItinClass;
284def IIC_MMX_PINSRW : InstrItinClass;
285def IIC_MMX_MASKMOV : InstrItinClass;
286
287def IIC_MMX_CVT_PD_RR : InstrItinClass;
288def IIC_MMX_CVT_PD_RM : InstrItinClass;
289def IIC_MMX_CVT_PS_RR : InstrItinClass;
290def IIC_MMX_CVT_PS_RM : InstrItinClass;
291
292def IIC_CMPX_LOCK : InstrItinClass;
293def IIC_CMPX_LOCK_8 : InstrItinClass;
294def IIC_CMPX_LOCK_8B : InstrItinClass;
295def IIC_CMPX_LOCK_16B : InstrItinClass;
296
297def IIC_XADD_LOCK_MEM : InstrItinClass;
298def IIC_XADD_LOCK_MEM8 : InstrItinClass;
299
300def IIC_FILD : InstrItinClass;
301def IIC_FLD : InstrItinClass;
302def IIC_FLD80 : InstrItinClass;
303def IIC_FST : InstrItinClass;
304def IIC_FST80 : InstrItinClass;
305def IIC_FIST : InstrItinClass;
306def IIC_FLDZ : InstrItinClass;
307def IIC_FUCOM : InstrItinClass;
308def IIC_FUCOMI : InstrItinClass;
309def IIC_FCOMI : InstrItinClass;
310def IIC_FNSTSW : InstrItinClass;
311def IIC_FNSTCW : InstrItinClass;
312def IIC_FLDCW : InstrItinClass;
313def IIC_FNINIT : InstrItinClass;
314def IIC_FFREE : InstrItinClass;
315def IIC_FNCLEX : InstrItinClass;
316def IIC_WAIT : InstrItinClass;
317def IIC_FXAM : InstrItinClass;
318def IIC_FNOP : InstrItinClass;
319def IIC_FLDL : InstrItinClass;
320def IIC_F2XM1 : InstrItinClass;
321def IIC_FYL2X : InstrItinClass;
322def IIC_FPTAN : InstrItinClass;
323def IIC_FPATAN : InstrItinClass;
324def IIC_FXTRACT : InstrItinClass;
325def IIC_FPREM1 : InstrItinClass;
326def IIC_FPSTP : InstrItinClass;
327def IIC_FPREM : InstrItinClass;
328def IIC_FYL2XP1 : InstrItinClass;
329def IIC_FSINCOS : InstrItinClass;
330def IIC_FRNDINT : InstrItinClass;
331def IIC_FSCALE : InstrItinClass;
332def IIC_FCOMPP : InstrItinClass;
333def IIC_FXSAVE : InstrItinClass;
334def IIC_FXRSTOR : InstrItinClass;
335
336def IIC_FXCH : InstrItinClass;
337
338// System instructions
339def IIC_CPUID : InstrItinClass;
340def IIC_INT : InstrItinClass;
341def IIC_INT3 : InstrItinClass;
342def IIC_INVD : InstrItinClass;
343def IIC_INVLPG : InstrItinClass;
344def IIC_IRET : InstrItinClass;
345def IIC_HLT : InstrItinClass;
346def IIC_LXS : InstrItinClass;
347def IIC_LTR : InstrItinClass;
348def IIC_RDTSC : InstrItinClass;
349def IIC_RSM : InstrItinClass;
350def IIC_SIDT : InstrItinClass;
351def IIC_SGDT : InstrItinClass;
352def IIC_SLDT : InstrItinClass;
353def IIC_STR : InstrItinClass;
354def IIC_SWAPGS : InstrItinClass;
355def IIC_SYSCALL : InstrItinClass;
356def IIC_SYS_ENTER_EXIT : InstrItinClass;
357def IIC_IN_RR : InstrItinClass;
358def IIC_IN_RI : InstrItinClass;
359def IIC_OUT_RR : InstrItinClass;
360def IIC_OUT_IR : InstrItinClass;
361def IIC_INS : InstrItinClass;
362def IIC_MOV_REG_DR : InstrItinClass;
363def IIC_MOV_DR_REG : InstrItinClass;
364def IIC_MOV_REG_CR : InstrItinClass;
365def IIC_MOV_CR_REG : InstrItinClass;
366def IIC_MOV_REG_SR : InstrItinClass;
367def IIC_MOV_MEM_SR : InstrItinClass;
368def IIC_MOV_SR_REG : InstrItinClass;
369def IIC_MOV_SR_MEM : InstrItinClass;
370def IIC_LAR_RM : InstrItinClass;
371def IIC_LAR_RR : InstrItinClass;
372def IIC_LSL_RM : InstrItinClass;
373def IIC_LSL_RR : InstrItinClass;
374def IIC_LGDT : InstrItinClass;
375def IIC_LIDT : InstrItinClass;
376def IIC_LLDT_REG : InstrItinClass;
377def IIC_LLDT_MEM : InstrItinClass;
378def IIC_PUSH_CS : InstrItinClass;
379def IIC_PUSH_SR : InstrItinClass;
380def IIC_POP_SR : InstrItinClass;
381def IIC_POP_SR_SS : InstrItinClass;
382def IIC_VERR : InstrItinClass;
383def IIC_VERW_REG : InstrItinClass;
384def IIC_VERW_MEM : InstrItinClass;
385def IIC_WRMSR : InstrItinClass;
386def IIC_RDMSR : InstrItinClass;
387def IIC_RDPMC : InstrItinClass;
388def IIC_SMSW : InstrItinClass;
389def IIC_LMSW_REG : InstrItinClass;
390def IIC_LMSW_MEM : InstrItinClass;
391def IIC_ENTER : InstrItinClass;
392def IIC_LEAVE : InstrItinClass;
393def IIC_POP_MEM : InstrItinClass;
394def IIC_POP_REG16 : InstrItinClass;
395def IIC_POP_REG : InstrItinClass;
396def IIC_POP_F : InstrItinClass;
397def IIC_POP_FD : InstrItinClass;
398def IIC_POP_A : InstrItinClass;
399def IIC_PUSH_IMM : InstrItinClass;
400def IIC_PUSH_MEM : InstrItinClass;
401def IIC_PUSH_REG : InstrItinClass;
402def IIC_PUSH_F : InstrItinClass;
403def IIC_PUSH_A : InstrItinClass;
404def IIC_BSWAP : InstrItinClass;
405def IIC_BSF : InstrItinClass;
406def IIC_BSR : InstrItinClass;
407def IIC_MOVS : InstrItinClass;
408def IIC_STOS : InstrItinClass;
409def IIC_SCAS : InstrItinClass;
410def IIC_CMPS : InstrItinClass;
411def IIC_MOV : InstrItinClass;
412def IIC_MOV_MEM : InstrItinClass;
413def IIC_AHF : InstrItinClass;
414def IIC_BT_MI : InstrItinClass;
415def IIC_BT_MR : InstrItinClass;
416def IIC_BT_RI : InstrItinClass;
417def IIC_BT_RR : InstrItinClass;
418def IIC_BTX_MI : InstrItinClass;
419def IIC_BTX_MR : InstrItinClass;
420def IIC_BTX_RI : InstrItinClass;
421def IIC_BTX_RR : InstrItinClass;
422def IIC_XCHG_REG : InstrItinClass;
423def IIC_XCHG_MEM : InstrItinClass;
424def IIC_XADD_REG : InstrItinClass;
425def IIC_XADD_MEM : InstrItinClass;
426def IIC_CMPXCHG_MEM : InstrItinClass;
427def IIC_CMPXCHG_REG : InstrItinClass;
428def IIC_CMPXCHG_MEM8 : InstrItinClass;
429def IIC_CMPXCHG_REG8 : InstrItinClass;
430def IIC_CMPXCHG_8B : InstrItinClass;
431def IIC_CMPXCHG_16B : InstrItinClass;
432def IIC_LODS : InstrItinClass;
433def IIC_OUTS : InstrItinClass;
434def IIC_CLC : InstrItinClass;
435def IIC_CLD : InstrItinClass;
436def IIC_CLI : InstrItinClass;
437def IIC_CMC : InstrItinClass;
438def IIC_CLTS : InstrItinClass;
439def IIC_STC : InstrItinClass;
440def IIC_STI : InstrItinClass;
441def IIC_STD : InstrItinClass;
442def IIC_XLAT : InstrItinClass;
443def IIC_AAA : InstrItinClass;
444def IIC_AAD : InstrItinClass;
445def IIC_AAM : InstrItinClass;
446def IIC_AAS : InstrItinClass;
447def IIC_DAA : InstrItinClass;
448def IIC_DAS : InstrItinClass;
449def IIC_BOUND : InstrItinClass;
450def IIC_ARPL_REG : InstrItinClass;
451def IIC_ARPL_MEM : InstrItinClass;
452def IIC_MOVBE : InstrItinClass;
453
454def IIC_NOP : InstrItinClass;
455
456//===----------------------------------------------------------------------===//
457// Processor instruction itineraries.
458
459// IssueWidth is analagous to the number of decode units. Core and its
460// descendents, including Nehalem and SandyBridge have 4 decoders.
461// Resources beyond the decoder operate on micro-ops and are bufferred
462// so adjacent micro-ops don't directly compete.
463//
464// MinLatency=0 indicates that RAW dependencies can be decoded in the
465// same cycle.
466//
467// HighLatency=10 is optimistic. X86InstrInfo::isHighLatencyDef
468// indicates high latency opcodes. Alternatively, InstrItinData
469// entries may be included here to define specific operand
470// latencies. Since these latencies are not used for pipeline hazards,
471// they do not need to be exact.
472//
473// The GenericModel contains no instruciton itineraries.
474def GenericModel : SchedMachineModel {
475  let IssueWidth = 4;
476  let MinLatency = 0;
477  let LoadLatency = 4;
478  let HighLatency = 10;
479}
480
481include "X86ScheduleAtom.td"
482