1//===-- PPCScheduleE500mc.td - e500mc Scheduling Defs ------*- 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// This file defines the itinerary class data for the Freescale e500mc 32-bit
11// Power processor.
12//
13// All information is derived from the "e500mc Core Reference Manual",
14// Freescale Document Number E500MCRM, Rev. 1, 03/2012.
15//
16//===----------------------------------------------------------------------===//
17// Relevant functional units in the Freescale e500mc core:
18//
19//  * Decode & Dispatch
20//    Can dispatch up to 2 instructions per clock cycle to either the GPR Issue
21//    queues (GIQx), FP Issue Queue (FIQ), or Branch issue queue (BIQ).
22def E500_DIS0 : FuncUnit; // Dispatch stage - insn 1
23def E500_DIS1 : FuncUnit; // Dispatch stage - insn 2
24
25//  * Execute
26//    6 pipelined execution units: SFX0, SFX1, BU, FPU, LSU, CFX.
27//    Some instructions can only execute in SFX0 but not SFX1.
28//    The CFX has a bypass path, allowing non-divide instructions to execute
29//    while a divide instruction is executed.
30def E500_SFX0  : FuncUnit; // Simple unit 0
31def E500_SFX1  : FuncUnit; // Simple unit 1
32def E500_BU    : FuncUnit; // Branch unit
33def E500_CFX_DivBypass
34               : FuncUnit; // CFX divide bypass path
35def E500_CFX_0 : FuncUnit; // CFX pipeline
36def E500_LSU_0 : FuncUnit; // LSU pipeline
37def E500_FPU_0 : FuncUnit; // FPU pipeline
38
39def E500_GPR_Bypass : Bypass;
40def E500_FPR_Bypass : Bypass;
41def E500_CR_Bypass  : Bypass;
42
43def PPCE500mcItineraries : ProcessorItineraries<
44  [E500_DIS0, E500_DIS1, E500_SFX0, E500_SFX1, E500_BU, E500_CFX_DivBypass,
45   E500_CFX_0, E500_LSU_0, E500_FPU_0],
46  [E500_CR_Bypass, E500_GPR_Bypass, E500_FPR_Bypass], [
47  InstrItinData<IIC_IntSimple,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
48                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
49                                 [4, 1, 1], // Latency = 1
50                                 [E500_GPR_Bypass,
51                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
52  InstrItinData<IIC_IntGeneral,  [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
53                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
54                                 [4, 1, 1], // Latency = 1
55                                 [E500_GPR_Bypass,
56                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
57  InstrItinData<IIC_IntISEL,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
58                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
59                                 [4, 1, 1, 1], // Latency = 1
60                                 [E500_GPR_Bypass,
61                                  E500_GPR_Bypass, E500_GPR_Bypass,
62                                  E500_CR_Bypass]>,
63  InstrItinData<IIC_IntCompare,  [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
64                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
65                                 [5, 1, 1], // Latency = 1 or 2
66                                 [E500_CR_Bypass,
67                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
68  InstrItinData<IIC_IntDivW,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
69                                  InstrStage<1, [E500_CFX_0], 0>,
70                                  InstrStage<14, [E500_CFX_DivBypass]>],
71                                 [17, 1, 1], // Latency=4..35, Repeat= 4..35
72                                 [E500_GPR_Bypass,
73                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
74  InstrItinData<IIC_IntMFFS,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
75                                  InstrStage<8, [E500_FPU_0]>],
76                                 [11], // Latency = 8
77                                 [E500_FPR_Bypass]>,
78  InstrItinData<IIC_IntMTFSB0,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
79                                  InstrStage<8, [E500_FPU_0]>],
80                                 [11, 1, 1], // Latency = 8
81                                 [NoBypass, NoBypass, NoBypass]>,
82  InstrItinData<IIC_IntMulHW,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
83                                  InstrStage<1, [E500_CFX_0]>],
84                                 [7, 1, 1], // Latency = 4, Repeat rate = 1
85                                 [E500_GPR_Bypass,
86                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
87  InstrItinData<IIC_IntMulHWU,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
88                                  InstrStage<1, [E500_CFX_0]>],
89                                 [7, 1, 1], // Latency = 4, Repeat rate = 1
90                                 [E500_GPR_Bypass,
91                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
92  InstrItinData<IIC_IntMulLI,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
93                                  InstrStage<1, [E500_CFX_0]>],
94                                 [7, 1, 1], // Latency = 4, Repeat rate = 1
95                                 [E500_GPR_Bypass,
96                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
97  InstrItinData<IIC_IntRotate,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
98                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
99                                 [4, 1, 1], // Latency = 1
100                                 [E500_GPR_Bypass,
101                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
102  InstrItinData<IIC_IntShift,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
103                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
104                                 [4, 1, 1], // Latency = 1
105                                 [E500_GPR_Bypass,
106                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
107  InstrItinData<IIC_IntTrapW,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
108                                  InstrStage<2, [E500_SFX0]>],
109                                 [5, 1], // Latency = 2, Repeat rate = 2
110                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
111  InstrItinData<IIC_BrB,         [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
112                                  InstrStage<1, [E500_BU]>],
113                                 [4, 1], // Latency = 1
114                                 [NoBypass, E500_GPR_Bypass]>,
115  InstrItinData<IIC_BrCR,        [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
116                                  InstrStage<1, [E500_BU]>],
117                                 [4, 1, 1], // Latency = 1
118                                 [E500_CR_Bypass,
119                                  E500_CR_Bypass, E500_CR_Bypass]>,
120  InstrItinData<IIC_BrMCR,       [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
121                                  InstrStage<1, [E500_BU]>],
122                                 [4, 1], // Latency = 1
123                                 [E500_CR_Bypass, E500_CR_Bypass]>,
124  InstrItinData<IIC_BrMCRX,      [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
125                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
126                                 [4, 1, 1], // Latency = 1
127                                 [E500_CR_Bypass, E500_GPR_Bypass]>,
128  InstrItinData<IIC_LdStDCBA,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
129                                  InstrStage<1, [E500_LSU_0]>],
130                                 [6, 1], // Latency = 3, Repeat rate = 1
131                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
132  InstrItinData<IIC_LdStDCBF,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
133                                  InstrStage<1, [E500_LSU_0]>],
134                                 [6, 1], // Latency = 3
135                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
136  InstrItinData<IIC_LdStDCBI,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
137                                  InstrStage<1, [E500_LSU_0]>],
138                                 [6, 1], // Latency = 3
139                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
140  InstrItinData<IIC_LdStLoad,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
141                                  InstrStage<1, [E500_LSU_0]>],
142                                 [6, 1], // Latency = 3
143                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
144  InstrItinData<IIC_LdStLoadUpd, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
145                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
146                                  InstrStage<1, [E500_LSU_0]>],
147                                 [6, 1], // Latency = 3
148                                 [E500_GPR_Bypass, E500_GPR_Bypass],
149                                 2>, // 2 micro-ops
150  InstrItinData<IIC_LdStLoadUpdX,[InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
151                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
152                                  InstrStage<1, [E500_LSU_0]>],
153                                 [6, 1], // Latency = 3
154                                 [E500_GPR_Bypass, E500_GPR_Bypass],
155                                 2>, // 2 micro-ops
156  InstrItinData<IIC_LdStStore,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
157                                  InstrStage<1, [E500_LSU_0]>],
158                                 [6, 1], // Latency = 3
159                                 [NoBypass, E500_GPR_Bypass]>,
160  InstrItinData<IIC_LdStStoreUpd,[InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
161                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
162                                  InstrStage<1, [E500_LSU_0]>],
163                                 [6, 1], // Latency = 3
164                                 [NoBypass, E500_GPR_Bypass],
165                                 2>, // 2 micro-ops
166  InstrItinData<IIC_LdStICBI,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
167                                  InstrStage<1, [E500_LSU_0]>],
168                                 [6, 1], // Latency = 3
169                                 [NoBypass, E500_GPR_Bypass]>,
170  InstrItinData<IIC_LdStSTFD,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
171                                  InstrStage<1, [E500_LSU_0]>],
172                                 [6, 1, 1], // Latency = 3
173                                 [E500_GPR_Bypass,
174                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
175  InstrItinData<IIC_LdStSTFDU,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
176                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
177                                  InstrStage<1, [E500_LSU_0]>],
178                                 [6, 1, 1], // Latency = 3
179                                 [E500_GPR_Bypass,
180                                  E500_GPR_Bypass, E500_GPR_Bypass],
181                                 2>, // 2 micro-ops
182  InstrItinData<IIC_LdStLFD,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
183                                  InstrStage<1, [E500_LSU_0]>],
184                                 [7, 1, 1], // Latency = 4
185                                 [E500_FPR_Bypass,
186                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
187  InstrItinData<IIC_LdStLFDU,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
188                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
189                                  InstrStage<1, [E500_LSU_0]>],
190                                 [7, 1, 1], // Latency = 4
191                                 [E500_FPR_Bypass,
192                                  E500_GPR_Bypass, E500_GPR_Bypass],
193                                 2>, // 2 micro-ops
194  InstrItinData<IIC_LdStLFDUX,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
195                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
196                                  InstrStage<1, [E500_LSU_0]>],
197                                 [7, 1, 1], // Latency = 4
198                                 [E500_FPR_Bypass,
199                                  E500_GPR_Bypass, E500_GPR_Bypass],
200                                 2>, // 2 micro-ops
201  InstrItinData<IIC_LdStLHA,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
202                                  InstrStage<1, [E500_LSU_0]>],
203                                 [6, 1], // Latency = 3
204                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
205  InstrItinData<IIC_LdStLHAU,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
206                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
207                                  InstrStage<1, [E500_LSU_0]>],
208                                 [6, 1], // Latency = 3
209                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
210  InstrItinData<IIC_LdStLHAUX,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
211                                  InstrStage<1, [E500_SFX0, E500_SFX1], 0>,
212                                  InstrStage<1, [E500_LSU_0]>],
213                                 [6, 1], // Latency = 3
214                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
215  InstrItinData<IIC_LdStLMW,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
216                                  InstrStage<1, [E500_LSU_0]>],
217                                 [7, 1], // Latency = r+3
218                                 [NoBypass, E500_GPR_Bypass]>,
219  InstrItinData<IIC_LdStLWARX,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
220                                  InstrStage<3, [E500_LSU_0]>],
221                                 [6, 1, 1], // Latency = 3, Repeat rate = 3
222                                 [E500_GPR_Bypass,
223                                  E500_GPR_Bypass, E500_GPR_Bypass]>,
224  InstrItinData<IIC_LdStSTWCX,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
225                                  InstrStage<1, [E500_LSU_0]>],
226                                 [6, 1], // Latency = 3
227                                 [NoBypass, E500_GPR_Bypass]>,
228  InstrItinData<IIC_LdStSync,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
229                                  InstrStage<1, [E500_LSU_0]>]>,
230  InstrItinData<IIC_SprMFSR,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
231                                  InstrStage<4, [E500_SFX0]>],
232                                 [7, 1],
233                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
234  InstrItinData<IIC_SprMTMSR,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
235                                  InstrStage<2, [E500_SFX0, E500_SFX1]>],
236                                 [5, 1], // Latency = 2, Repeat rate = 4
237                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
238  InstrItinData<IIC_SprMTSR,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
239                                  InstrStage<1, [E500_SFX0]>],
240                                 [5, 1],
241                                 [NoBypass, E500_GPR_Bypass]>,
242  InstrItinData<IIC_SprTLBSYNC,  [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
243                                  InstrStage<1, [E500_LSU_0], 0>]>,
244  InstrItinData<IIC_SprMFCR,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
245                                  InstrStage<5, [E500_SFX0]>],
246                                 [8, 1],
247                                 [E500_GPR_Bypass, E500_CR_Bypass]>,
248  InstrItinData<IIC_SprMFCRF,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
249                                  InstrStage<5, [E500_SFX0]>],
250                                 [8, 1],
251                                 [E500_GPR_Bypass, E500_CR_Bypass]>,
252  InstrItinData<IIC_SprMFMSR,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
253                                  InstrStage<4, [E500_SFX0]>],
254                                 [7, 1], // Latency = 4, Repeat rate = 4
255                                 [E500_GPR_Bypass, E500_GPR_Bypass]>,
256  InstrItinData<IIC_SprMFSPR,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
257                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
258                                 [4, 1], // Latency = 1, Repeat rate = 1
259                                 [E500_GPR_Bypass, E500_CR_Bypass]>,
260  InstrItinData<IIC_SprMFTB,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
261                                  InstrStage<4, [E500_SFX0]>],
262                                 [7, 1], // Latency = 4, Repeat rate = 4
263                                 [NoBypass, E500_GPR_Bypass]>,
264  InstrItinData<IIC_SprMTSPR,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
265                                  InstrStage<1, [E500_SFX0, E500_SFX1]>],
266                                 [4, 1], // Latency = 1, Repeat rate = 1
267                                 [E500_CR_Bypass, E500_GPR_Bypass]>,
268  InstrItinData<IIC_SprMTSRIN,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
269                                  InstrStage<1, [E500_SFX0]>],
270                                 [4, 1],
271                                 [NoBypass, E500_GPR_Bypass]>,
272  InstrItinData<IIC_FPGeneral,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
273                                  InstrStage<2, [E500_FPU_0]>],
274                                 [11, 1, 1], // Latency = 8, Repeat rate = 2
275                                 [E500_FPR_Bypass,
276                                  E500_FPR_Bypass, E500_FPR_Bypass]>,
277  InstrItinData<IIC_FPAddSub,    [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
278                                  InstrStage<4, [E500_FPU_0]>],
279                                 [13, 1, 1], // Latency = 10, Repeat rate = 4
280                                 [E500_FPR_Bypass,
281                                  E500_FPR_Bypass, E500_FPR_Bypass]>,
282  InstrItinData<IIC_FPCompare,   [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
283                                  InstrStage<2, [E500_FPU_0]>],
284                                 [11, 1, 1], // Latency = 8, Repeat rate = 2
285                                 [E500_CR_Bypass,
286                                  E500_FPR_Bypass, E500_FPR_Bypass]>,
287  InstrItinData<IIC_FPDivD,      [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
288                                  InstrStage<68, [E500_FPU_0]>],
289                                 [71, 1, 1], // Latency = 68, Repeat rate = 68
290                                 [E500_FPR_Bypass,
291                                  E500_FPR_Bypass, E500_FPR_Bypass]>,
292  InstrItinData<IIC_FPDivS,      [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
293                                  InstrStage<38, [E500_FPU_0]>],
294                                 [41, 1, 1], // Latency = 38, Repeat rate = 38
295                                 [E500_FPR_Bypass,
296                                  E500_FPR_Bypass, E500_FPR_Bypass]>,
297  InstrItinData<IIC_FPFused,     [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
298                                  InstrStage<4, [E500_FPU_0]>],
299                                 [13, 1, 1, 1], // Latency = 10, Repeat rate = 4
300                                 [E500_FPR_Bypass,
301                                  E500_FPR_Bypass, E500_FPR_Bypass,
302                                  E500_FPR_Bypass]>,
303  InstrItinData<IIC_FPRes,       [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
304                                  InstrStage<38, [E500_FPU_0]>],
305                                 [41, 1], // Latency = 38, Repeat rate = 38
306                                 [E500_FPR_Bypass, E500_FPR_Bypass]>
307]>;
308
309// ===---------------------------------------------------------------------===//
310// e500mc machine model for scheduling and other instruction cost heuristics.
311
312def PPCE500mcModel : SchedMachineModel {
313  let IssueWidth = 2;  // 2 micro-ops are dispatched per cycle.
314  let LoadLatency = 5; // Optimistic load latency assuming bypass.
315                       // This is overriden by OperandCycles if the
316                       // Itineraries are queried instead.
317
318  let CompleteModel = 0;
319
320  let Itineraries = PPCE500mcItineraries;
321}
322