1 ;; DFA-based pipeline description for MIPS32 model 74k.
2 ;; Contributed by MIPS Technologies and CodeSourcery.
5 ;; "MIPS32 74K Microarchitecure Specification Rev. 01.02 Jun 15, 2006"
6 ;; "MIPS32 74Kf Processor Core Datasheet Jun 2, 2006"
8 ;; Copyright (C) 2007 Free Software Foundation, Inc.
10 ;; This file is part of GCC.
12 ;; GCC is free software; you can redistribute it and/or modify it
13 ;; under the terms of the GNU General Public License as published
14 ;; by the Free Software Foundation; either version 3, or (at your
15 ;; option) any later version.
17 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
18 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
19 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
20 ;; License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GCC; see the file COPYING3. If not see
24 ;; <http://www.gnu.org/licenses/>.
26 (define_automaton "r74k_mdu_pipe, r74k_alu_pipe, r74k_agen_pipe, r74k_fpu")
27 (define_cpu_unit "r74k_mul" "r74k_mdu_pipe")
28 (define_cpu_unit "r74k_alu" "r74k_alu_pipe")
29 (define_cpu_unit "r74k_agen" "r74k_agen_pipe")
30 (define_cpu_unit "r74k_fpu_arith" "r74k_fpu")
31 (define_cpu_unit "r74k_fpu_ldst" "r74k_fpu")
33 ;; --------------------------------------------------------------
35 ;; --------------------------------------------------------------
37 ;; ALU: Logicals/Arithmetics
38 ;; - Logicals, move (addu/addiu with rt = 0), Set less than,
39 ;; sign extend - 1 cycle
40 (define_insn_reservation "r74k_int_logical" 1
41 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
42 (eq_attr "type" "logical,move,signext,slt"))
45 ;; - Arithmetics - 2 cycles
46 (define_insn_reservation "r74k_int_arith" 2
47 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
48 (eq_attr "type" "arith,const,shift,clz"))
51 (define_insn_reservation "r74k_int_nop" 0
52 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
53 (eq_attr "type" "nop"))
56 (define_insn_reservation "r74k_int_cmove" 4
57 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
58 (eq_attr "type" "condmove"))
61 ;; MDU: fully pipelined multiplier
62 ;; mult - delivers result to hi/lo in 4 cycle (pipelined)
63 (define_insn_reservation "r74k_int_mult" 4
64 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
65 (eq_attr "type" "imul"))
68 ;; madd, msub - delivers result to hi/lo in 4 cycle (pipelined)
69 (define_insn_reservation "r74k_int_madd" 4
70 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
71 (eq_attr "type" "imadd"))
74 ;; mul - delivers result to general register in 7 cycles
75 (define_insn_reservation "r74k_int_mul3" 7
76 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
77 (eq_attr "type" "imul3"))
80 ;; mfhi, mflo, mflhxu - deliver result to gpr in 7 cycles
81 (define_insn_reservation "r74k_int_mfhilo" 7
82 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
83 (eq_attr "type" "mfhilo"))
86 ;; mthi, mtlo, mtlhx - deliver result to hi/lo, thence madd, handled as bypass
87 (define_insn_reservation "r74k_int_mthilo" 7
88 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
89 (eq_attr "type" "mthilo"))
92 ;; div - default to 50 cycles for 32bit operands. Faster for 8 bit,
93 ;; but is tricky to identify.
94 (define_insn_reservation "r74k_int_div" 50
95 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
96 (eq_attr "type" "idiv"))
97 "r74k_alu+r74k_mul*50")
100 (define_insn_reservation "r74k_int_call" 1
101 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
102 (eq_attr "type" "call"))
106 (define_insn_reservation "r74k_int_jump" 1
107 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
108 (eq_attr "type" "branch,jump"))
111 ;; loads: lb, lbu, lh, lhu, ll, lw, lwl, lwr, lwpc, lwxs
112 ;; prefetch: prefetch, prefetchx
113 (define_insn_reservation "r74k_int_load" 3
114 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
115 (eq_attr "type" "load,prefetch,prefetchx"))
119 (define_insn_reservation "r74k_int_store" 1
120 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
121 (and (eq_attr "type" "store")
122 (eq_attr "mode" "!unknown")))
126 ;; Unknowns - Currently these include blockage, consttable and alignment
127 ;; rtls. They do not really affect scheduling latency, (blockage
128 ;; affects scheduling via log links, but not used here).
130 (define_insn_reservation "r74k_unknown" 1
131 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
132 (eq_attr "type" "unknown"))
135 (define_insn_reservation "r74k_multi" 10
136 (and (eq_attr "cpu" "74kc,74kf2_1,74kf1_1,74kf3_2")
137 (eq_attr "type" "multi"))
138 "(r74k_alu+r74k_agen)*10")
140 ;; --------------------------------------------------------------
141 ;; Bypass to Consumer
142 ;; --------------------------------------------------------------
144 ;; load->next use : 3 cycles (Default)
145 ;; load->load base: 4 cycles
146 ;; load->store base: 4 cycles
147 (define_bypass 4 "r74k_int_load" "r74k_int_load")
148 (define_bypass 4 "r74k_int_load" "r74k_int_store" "!store_data_bypass_p")
150 ;; logical/move/slt/signext->next use : 1 cycles (Default)
151 ;; logical/move/slt/signext->load base: 2 cycles
152 ;; logical/move/slt/signext->store base: 2 cycles
153 (define_bypass 2 "r74k_int_logical" "r74k_int_load")
154 (define_bypass 2 "r74k_int_logical" "r74k_int_store" "!store_data_bypass_p")
156 ;; arith->next use : 2 cycles (Default)
157 ;; arith->load base: 3 cycles
158 ;; arith->store base: 3 cycles
159 (define_bypass 3 "r74k_int_arith" "r74k_int_load")
160 (define_bypass 3 "r74k_int_arith" "r74k_int_store" "!store_data_bypass_p")
162 ;; cmove->next use : 4 cycles (Default)
163 ;; cmove->load base: 5 cycles
164 ;; cmove->store base: 5 cycles
165 (define_bypass 5 "r74k_int_cmove" "r74k_int_load")
166 (define_bypass 5 "r74k_int_cmove" "r74k_int_store" "!store_data_bypass_p")
168 ;; mult/madd/msub->int_mfhilo : 4 cycles (default)
169 ;; mult->madd/msub : 1 cycles
170 ;; madd/msub->madd/msub : 1 cycles
171 (define_bypass 1 "r74k_int_mult,r74k_int_mul3" "r74k_int_madd"
172 "mips_linked_madd_p")
173 (define_bypass 1 "r74k_int_madd" "r74k_int_madd"
174 "mips_linked_madd_p")
176 ;; --------------------------------------------------------------
177 ;; Floating Point Instructions
178 ;; --------------------------------------------------------------
180 ;; 74Kf FPU runs at 1:1 or 2:1 core/FPU clock ratio.
183 (define_insn_reservation "r74kf1_1_fadd" 4
184 (and (eq_attr "cpu" "74kf1_1")
185 (eq_attr "type" "fadd,fabs,fneg"))
188 (define_insn_reservation "r74kf2_1_fadd" 8
189 (and (eq_attr "cpu" "74kf2_1")
190 (eq_attr "type" "fadd,fabs,fneg"))
193 (define_insn_reservation "r74kf3_2_fadd" 6
194 (and (eq_attr "cpu" "74kf3_2")
195 (eq_attr "type" "fadd,fabs,fneg"))
199 (define_insn_reservation "r74kf1_1_fmove" 4
200 (and (eq_attr "cpu" "74kf1_1")
201 (eq_attr "type" "fmove"))
204 (define_insn_reservation "r74kf2_1_fmove" 8
205 (and (eq_attr "cpu" "74kf2_1")
206 (eq_attr "type" "fmove"))
209 (define_insn_reservation "r74kf3_2_fmove" 6
210 (and (eq_attr "cpu" "74kf3_2")
211 (eq_attr "type" "fmove"))
215 (define_insn_reservation "r74kf1_1_fload" 4
216 (and (eq_attr "cpu" "74kf1_1")
217 (eq_attr "type" "fpload,fpidxload"))
218 "r74k_agen+r74k_fpu_ldst")
220 (define_insn_reservation "r74kf2_1_fload" 8
221 (and (eq_attr "cpu" "74kf2_1")
222 (eq_attr "type" "fpload,fpidxload"))
223 "r74k_agen+(r74k_fpu_ldst*2)")
225 (define_insn_reservation "r74kf3_2_fload" 6
226 (and (eq_attr "cpu" "74kf3_2")
227 (eq_attr "type" "fpload,fpidxload"))
228 "r74k_agen+r74k_fpu_ldst")
231 (define_insn_reservation "r74kf1_1_fstore" 1
232 (and (eq_attr "cpu" "74kf1_1")
233 (eq_attr "type" "fpstore,fpidxstore"))
234 "r74k_agen+r74k_fpu_ldst")
236 (define_insn_reservation "r74kf2_1_fstore" 2
237 (and (eq_attr "cpu" "74kf2_1")
238 (eq_attr "type" "fpstore,fpidxstore"))
239 "r74k_agen+(r74k_fpu_ldst*2)")
241 (define_insn_reservation "r74kf3_2_fstore" 1
242 (and (eq_attr "cpu" "74kf3_2")
243 (eq_attr "type" "fpstore,fpidxstore"))
244 "r74k_agen+r74k_fpu_ldst")
247 (define_insn_reservation "r74kf1_1_fmul_sf" 4
248 (and (eq_attr "cpu" "74kf1_1")
249 (and (eq_attr "type" "fmul,fmadd")
250 (eq_attr "mode" "SF")))
253 (define_insn_reservation "r74kf2_1_fmul_sf" 8
254 (and (eq_attr "cpu" "74kf2_1")
255 (and (eq_attr "type" "fmul,fmadd")
256 (eq_attr "mode" "SF")))
259 (define_insn_reservation "r74kf3_2_fmul_sf" 6
260 (and (eq_attr "cpu" "74kf3_2")
261 (and (eq_attr "type" "fmul,fmadd")
262 (eq_attr "mode" "SF")))
265 (define_insn_reservation "r74kf1_1_fmul_df" 5
266 (and (eq_attr "cpu" "74kf1_1")
267 (and (eq_attr "type" "fmul,fmadd")
268 (eq_attr "mode" "DF")))
271 (define_insn_reservation "r74kf2_1_fmul_df" 10
272 (and (eq_attr "cpu" "74kf2_1")
273 (and (eq_attr "type" "fmul,fmadd")
274 (eq_attr "mode" "DF")))
277 (define_insn_reservation "r74kf3_2_fmul_df" 7
278 (and (eq_attr "cpu" "74kf3_2")
279 (and (eq_attr "type" "fmul,fmadd")
280 (eq_attr "mode" "DF")))
284 (define_insn_reservation "r74kf1_1_fdiv_sf" 17
285 (and (eq_attr "cpu" "74kf1_1")
286 (and (eq_attr "type" "fdiv,fsqrt")
287 (eq_attr "mode" "SF")))
290 (define_insn_reservation "r74kf2_1_fdiv_sf" 34
291 (and (eq_attr "cpu" "74kf2_1")
292 (and (eq_attr "type" "fdiv,fsqrt")
293 (eq_attr "mode" "SF")))
296 (define_insn_reservation "r74kf3_2_fdiv_sf" 25
297 (and (eq_attr "cpu" "74kf3_2")
298 (and (eq_attr "type" "fdiv,fsqrt")
299 (eq_attr "mode" "SF")))
302 (define_insn_reservation "r74kf1_1_fdiv_df" 32
303 (and (eq_attr "cpu" "74kf1_1")
304 (and (eq_attr "type" "fdiv,fsqrt")
305 (eq_attr "mode" "DF")))
308 (define_insn_reservation "r74kf2_1_fdiv_df" 64
309 (and (eq_attr "cpu" "74kf2_1")
310 (and (eq_attr "type" "fdiv,fsqrt")
311 (eq_attr "mode" "DF")))
314 (define_insn_reservation "r74kf3_2_fdiv_df" 48
315 (and (eq_attr "cpu" "74kf3_2")
316 (and (eq_attr "type" "fdiv,fsqrt")
317 (eq_attr "mode" "DF")))
321 (define_insn_reservation "r74kf1_1_frsqrt_sf" 17
322 (and (eq_attr "cpu" "74kf1_1")
323 (and (eq_attr "type" "frsqrt")
324 (eq_attr "mode" "SF")))
327 (define_insn_reservation "r74kf2_1_frsqrt_sf" 34
328 (and (eq_attr "cpu" "74kf2_1")
329 (and (eq_attr "type" "frsqrt")
330 (eq_attr "mode" "SF")))
333 (define_insn_reservation "r74kf3_2_frsqrt_sf" 25
334 (and (eq_attr "cpu" "74kf3_2")
335 (and (eq_attr "type" "frsqrt")
336 (eq_attr "mode" "SF")))
339 (define_insn_reservation "r74kf1_1_frsqrt_df" 36
340 (and (eq_attr "cpu" "74kf1_1")
341 (and (eq_attr "type" "frsqrt")
342 (eq_attr "mode" "DF")))
345 (define_insn_reservation "r74kf2_1_frsqrt_df" 72
346 (and (eq_attr "cpu" "74kf2_1")
347 (and (eq_attr "type" "frsqrt")
348 (eq_attr "mode" "DF")))
351 (define_insn_reservation "r74kf3_2_frsqrt_df" 54
352 (and (eq_attr "cpu" "74kf3_2")
353 (and (eq_attr "type" "frsqrt")
354 (eq_attr "mode" "DF")))
358 (define_insn_reservation "r74kf1_1_fcmp" 4
359 (and (eq_attr "cpu" "74kf1_1")
360 (eq_attr "type" "fcmp"))
363 (define_insn_reservation "r74kf2_1_fcmp" 8
364 (and (eq_attr "cpu" "74kf2_1")
365 (eq_attr "type" "fcmp"))
368 (define_insn_reservation "r74kf3_2_fcmp" 6
369 (and (eq_attr "cpu" "74kf3_2")
370 (eq_attr "type" "fcmp"))
374 (define_insn_reservation "r74kf1_1_fcvt" 4
375 (and (eq_attr "cpu" "74kf1_1")
376 (eq_attr "type" "fcvt"))
379 (define_insn_reservation "r74kf2_1_fcvt" 8
380 (and (eq_attr "cpu" "74kf2_1")
381 (eq_attr "type" "fcvt"))
384 (define_insn_reservation "r74kf3_2_fcvt" 6
385 (and (eq_attr "cpu" "74kf3_2")
386 (eq_attr "type" "fcvt"))
389 ;; fxfer (MTC1, DMTC1: latency is 4) (MFC1, DMFC1: latency is 1)
390 (define_insn_reservation "r74kf1_1_fxfer_to_c1" 4
391 (and (eq_attr "cpu" "74kf1_1")
392 (eq_attr "type" "mtc"))
395 (define_insn_reservation "r74kf2_1_fxfer_to_c1" 8
396 (and (eq_attr "cpu" "74kf2_1")
397 (eq_attr "type" "mtc"))
400 (define_insn_reservation "r74kf3_2_fxfer_to_c1" 6
401 (and (eq_attr "cpu" "74kf3_2")
402 (eq_attr "type" "mtc"))
405 (define_insn_reservation "r74kf1_1_fxfer_from_c1" 1
406 (and (eq_attr "cpu" "74kf1_1")
407 (eq_attr "type" "mfc"))
410 (define_insn_reservation "r74kf2_1_fxfer_from_c1" 2
411 (and (eq_attr "cpu" "74kf2_1")
412 (eq_attr "type" "mfc"))
415 (define_insn_reservation "r74kf3_2_fxfer_from_c1" 1
416 (and (eq_attr "cpu" "74kf3_2")
417 (eq_attr "type" "mfc"))