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077dab3b | 1 | ;; Scheduling description for z900 (cpu 2064). |
c161ecf7 | 2 | ;; Copyright (C) 2003 Free Software Foundation, Inc. |
077dab3b HP |
3 | ;; Contributed by Hartmut Penner (hpenner@de.ibm.com) and |
4 | ;; Ulrich Weigand (uweigand@de.ibm.com). | |
5 | ;; | |
6 | ;; This file is part of GNU CC. | |
7 | ;; | |
8 | ;; GNU CC is free software; you can redistribute it and/or modify | |
9 | ;; it under the terms of the GNU General Public License as published by | |
10 | ;; the Free Software Foundation; either version 2, or (at your option) | |
11 | ;; any later version. | |
12 | ;; | |
13 | ;; GNU CC is distributed in the hope that it will be useful, | |
14 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | ;; GNU General Public License for more details. | |
17 | ;; | |
18 | ;; You should have received a copy of the GNU General Public License | |
19 | ;; along with GNU CC; see the file COPYING. If not, write to | |
20 | ;; the Free Software Foundation, 59 Temple Place - Suite 330, | |
21 | ;; Boston, MA 02111-1307, USA. | |
22 | ||
23 | ;; | |
24 | ;; References: | |
25 | ;; The microarchitecture of the IBM eServer z900 processor. | |
26 | ;; E.M. Schwarz et al. | |
27 | ;; IBM Journal of Research and Development Vol. 46 No 4/5, 2002. | |
28 | ;; | |
29 | ;; z900 (cpu 2064) pipeline | |
30 | ;; | |
31 | ;; dec | |
32 | ;; --> | <--- | |
33 | ;; LA bypass | agen | | |
34 | ;; | | | | |
35 | ;; --- c1 | Load bypass | |
36 | ;; | | | |
37 | ;; c2---- | |
38 | ;; | | |
39 | ;; e1 | |
40 | ;; | | |
41 | ;; wr | |
42 | ||
43 | (define_automaton "z_ipu") | |
44 | (define_cpu_unit "z_e1" "z_ipu") | |
45 | (define_cpu_unit "z_wr" "z_ipu") | |
46 | ||
47 | ||
48 | (define_insn_reservation "z_la" 1 | |
49 | (and (eq_attr "cpu" "z900") | |
50 | (eq_attr "type" "la")) | |
51 | "z_e1,z_wr") | |
52 | ||
53 | (define_insn_reservation "z_larl" 1 | |
54 | (and (eq_attr "cpu" "z900") | |
55 | (eq_attr "type" "larl")) | |
56 | "z_e1,z_wr") | |
57 | ||
58 | (define_insn_reservation "z_load" 1 | |
59 | (and (eq_attr "cpu" "z900") | |
60 | (eq_attr "type" "load")) | |
61 | "z_e1,z_wr") | |
62 | ||
63 | (define_insn_reservation "z_store" 1 | |
64 | (and (eq_attr "cpu" "z900") | |
65 | (eq_attr "type" "store")) | |
66 | "z_e1,z_wr") | |
67 | ||
68 | (define_insn_reservation "z_call" 5 | |
69 | (and (eq_attr "cpu" "z900") | |
70 | (eq_attr "type" "jsr")) | |
71 | "z_e1*5,z_wr") | |
72 | ||
73 | (define_insn_reservation "z_o2" 2 | |
74 | (and (eq_attr "cpu" "z900") | |
75 | (eq_attr "type" "o2")) | |
76 | "z_e1*2,z_wr") | |
77 | ||
78 | (define_insn_reservation "z_o3" 3 | |
79 | (and (eq_attr "cpu" "z900") | |
80 | (eq_attr "type" "o3")) | |
81 | "z_e1*3,z_wr") | |
82 | ||
83 | ; | |
84 | ; Insn still not mentioned are check for | |
85 | ; the usage of the agen unit | |
86 | ; | |
87 | ||
88 | (define_insn_reservation "z_int" 1 | |
89 | (and (eq_attr "cpu" "z900") | |
90 | (eq_attr "atype" "reg")) | |
91 | "z_e1,z_wr") | |
92 | ||
93 | (define_insn_reservation "z_agen" 1 | |
94 | (and (eq_attr "cpu" "z900") | |
95 | (eq_attr "atype" "agen")) | |
96 | "z_e1,z_wr") | |
97 | ||
98 | ||
99 | ;; | |
100 | ;; s390_agen_dep_p returns 1, if a register is set in the | |
101 | ;; first insn and used in the dependend insn to form a address. | |
102 | ;; | |
103 | ||
104 | ;; | |
105 | ;; If a intruction uses a register to address memory, it needs | |
106 | ;; to be set 5 cycles in advance. | |
107 | ;; | |
108 | ||
109 | (define_bypass 5 "z_int,z_agen" | |
110 | "z_agen,z_la,z_call,z_load,z_store" "s390_agen_dep_p") | |
111 | ||
112 | ;; | |
113 | ;; A load type instruction uses a bypass to feed the result back | |
114 | ;; to the address generation pipeline stage. | |
115 | ;; | |
116 | ||
f0bf1270 | 117 | (define_bypass 3 "z_load" |
077dab3b HP |
118 | "z_agen,z_la,z_call,z_load,z_store" "s390_agen_dep_p") |
119 | ||
120 | ;; | |
121 | ;; A load address type instruction uses a bypass to feed the | |
122 | ;; result back to the address generation pipeline stage. | |
123 | ;; | |
124 | ||
f0bf1270 | 125 | (define_bypass 2 "z_larl,z_la" |
077dab3b HP |
126 | "z_agen,z_la,z_call,z_load,z_store" "s390_agen_dep_p") |
127 | ||
128 | ||
129 | ||
130 | ||
131 |