PPCScheduleE500.td
16.6 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
//===-- PPCScheduleE500.td - e500 Scheduling Defs ------*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the itinerary class data for the Freescale e500 32-bit
// Power processor.
//
// All information is derived from the "e500 Core Reference Manual",
// Freescale Document Number E500MCRM, Rev. 1, 03/2012.
//
//===----------------------------------------------------------------------===//
// Relevant functional units in the Freescale e500 core:
//
// * Decode & Dispatch
// Can dispatch up to 2 instructions per clock cycle to either the GPR Issue
// queues (GIQx) or Branch issue queue (BIQ).
def E500_DIS0 : FuncUnit; // Dispatch stage - insn 1
def E500_DIS1 : FuncUnit; // Dispatch stage - insn 2
// * Execute
// 6 pipelined execution units: SU0, SU1, BU, LSU, MU.
// Some instructions can only execute in SU0 but not SU1.
def E500_SU0 : FuncUnit; // Simple unit 0
def E500_SU1 : FuncUnit; // Simple unit 1
def E500_BU : FuncUnit; // Branch unit
def E500_MU : FuncUnit; // MU pipeline
def E500_LSU_0 : FuncUnit; // LSU pipeline
def E500_GPR_Bypass : Bypass;
def E500_CR_Bypass : Bypass;
def E500_DivBypass : Bypass;
def PPCE500Itineraries : ProcessorItineraries<
[E500_DIS0, E500_DIS1, E500_SU0, E500_SU1, E500_BU,
E500_MU, E500_LSU_0],
[E500_CR_Bypass, E500_GPR_Bypass, E500_DivBypass], [
InstrItinData<IIC_IntSimple, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1, 1], // Latency = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1, 1], // Latency = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntISEL, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1, 1, 1], // Latency = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass,
E500_CR_Bypass]>,
InstrItinData<IIC_IntCompare, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[5, 1, 1], // Latency = 1 or 2
[E500_CR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntDivW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_MU], 0>,
InstrStage<14, [E500_MU]>],
[17, 1, 1], // Latency=4..35, Repeat= 4..35
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntMulHW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_MU]>],
[7, 1, 1], // Latency = 4, Repeat rate = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntMulHWU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_MU]>],
[7, 1, 1], // Latency = 4, Repeat rate = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntMulLI, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_MU]>],
[7, 1, 1], // Latency = 4, Repeat rate = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntRotate, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1, 1], // Latency = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntShift, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1, 1], // Latency = 1
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_IntTrapW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<2, [E500_SU0]>],
[5, 1], // Latency = 2, Repeat rate = 2
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_BrB, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_BU]>],
[4, 1], // Latency = 1
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_BrCR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_BU]>],
[4, 1, 1], // Latency = 1
[E500_CR_Bypass,
E500_CR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_BrMCR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_BU]>],
[4, 1], // Latency = 1
[E500_CR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_BrMCRX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1, 1], // Latency = 1
[E500_CR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStDCBA, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3, Repeat rate = 1
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStDCBF, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStDCBI, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLoad, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLoadUpd, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStLoadUpdX,[InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStStore, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[NoBypass, E500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStSTUX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[NoBypass, E500_GPR_Bypass],
2>, // 2 micro-ops
InstrItinData<IIC_LdStICBI, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLHA, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLHAU, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLHAUX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLMW, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[7, 1], // Latency = r+3
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStLWARX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<3, [E500_LSU_0]>],
[6, 1, 1], // Latency = 3, Repeat rate = 3
[E500_GPR_Bypass,
E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStSTWCX, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>],
[6, 1], // Latency = 3
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_LdStSync, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0]>]>,
InstrItinData<IIC_SprMFSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_SU0]>],
[7, 1],
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMTMSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<2, [E500_SU0, E500_SU1]>],
[5, 1], // Latency = 2, Repeat rate = 4
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMTSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0]>],
[5, 1],
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprTLBSYNC, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_LSU_0], 0>]>,
InstrItinData<IIC_SprMFCR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<5, [E500_SU0]>],
[8, 1],
[E500_GPR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_SprMFCRF, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<5, [E500_SU0]>],
[8, 1],
[E500_GPR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_SprMFPMR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_SU0]>],
[7, 1], // Latency = 4, Repeat rate = 4
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMFMSR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_SU0]>],
[7, 1], // Latency = 4, Repeat rate = 4
[E500_GPR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMFSPR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1], // Latency = 1, Repeat rate = 1
[E500_GPR_Bypass, E500_CR_Bypass]>,
InstrItinData<IIC_SprMTPMR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0]>],
[4, 1], // Latency = 1, Repeat rate = 1
[E500_CR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMFTB, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_SU0]>],
[7, 1], // Latency = 4, Repeat rate = 4
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMTSPR, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0, E500_SU1]>],
[4, 1], // Latency = 1, Repeat rate = 1
[E500_CR_Bypass, E500_GPR_Bypass]>,
InstrItinData<IIC_SprMTSRIN, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0]>],
[4, 1],
[NoBypass, E500_GPR_Bypass]>,
InstrItinData<IIC_FPDGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<6, [E500_MU]>],
[9, 1, 1], // Latency = 6, Repeat rate = 1
[NoBypass]>,
InstrItinData<IIC_FPSGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_MU]>],
[7, 1, 1], // Latency = 4, Repeat rate = 1
[NoBypass]>,
InstrItinData<IIC_FPDivD, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<32, [E500_MU]>],
[35, 1, 1], // Latency = 32, Repeat rate = 32
[E500_DivBypass]>,
InstrItinData<IIC_FPDivS, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<29, [E500_MU]>],
[32, 1, 1], // Latency = 29, Repeat rate = 29
[E500_DivBypass]>,
InstrItinData<IIC_VecGeneral, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<1, [E500_SU0]>],
[4, 1, 1], // Latency = 1, Repeat rate = 1
[NoBypass]>,
InstrItinData<IIC_VecComplex, [InstrStage<1, [E500_DIS0, E500_DIS1], 0>,
InstrStage<4, [E500_MU]>],
[7, 1, 1], // Latency = 4, Repeat rate = 1
[NoBypass]>
]>;
// ===---------------------------------------------------------------------===//
// e500 machine model for scheduling and other instruction cost heuristics.
def PPCE500Model : SchedMachineModel {
let IssueWidth = 2; // 2 micro-ops are dispatched per cycle.
let LoadLatency = 5; // Optimistic load latency assuming bypass.
// This is overriden by OperandCycles if the
// Itineraries are queried instead.
let CompleteModel = 0;
let Itineraries = PPCE500Itineraries;
}