geode.md revision 296373
1;; Geode Scheduling 2;; Copyright (C) 2006 3;; Free Software Foundation, Inc. 4;; 5;; This file is part of GCC. 6;; 7;; GCC is free software; you can redistribute it and/or modify 8;; it under the terms of the GNU General Public License as published by 9;; the Free Software Foundation; either version 2, or (at your option) 10;; any later version. 11;; 12;; GCC is distributed in the hope that it will be useful, 13;; but WITHOUT ANY WARRANTY; without even the implied warranty of 14;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15;; GNU General Public License for more details. 16;; 17;; You should have received a copy of the GNU General Public License 18;; along with GCC; see the file COPYING. If not, write to 19;; the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20;; Boston, MA 02110-1301, USA. 21;; 22;; The Geode architecture is one insn issue processor. 23;; 24;; This description is based on data from the following documents: 25;; 26;; "AMD Geode GX Processor Data Book" 27;; Advanced Micro Devices, Inc., Aug 2005. 28;; 29;; "AMD Geode LX Processor Data Book" 30;; Advanced Micro Devices, Inc., Jan 2006. 31;; 32;; 33;; CPU execution units of the Geode: 34;; 35;; issue describes the issue pipeline. 36;; alu describes the Integer unit 37;; fpu describes the FP unit 38;; 39;; The fp unit is out of order execution unit with register renaming. 40;; There is also memory management unit and execution pipeline for 41;; load/store operations. We ignore it and difference between insns 42;; using memory and registers. 43 44(define_automaton "geode") 45 46(define_cpu_unit "geode_issue,geode_alu,geode_fpu" "geode") 47 48(define_insn_reservation "alu" 1 49 (and (eq_attr "cpu" "geode") 50 (eq_attr "type" "alu,alu1,negnot,icmp,lea,test,imov,imovx,icmov,incdec,setcc")) 51 "geode_issue,geode_alu") 52 53(define_insn_reservation "shift" 2 54 (and (eq_attr "cpu" "geode") 55 (eq_attr "type" "ishift,ishift1,rotate,rotate1,cld")) 56 "geode_issue,geode_alu*2") 57 58(define_insn_reservation "imul" 7 59 (and (eq_attr "cpu" "geode") 60 (eq_attr "type" "imul")) 61 "geode_issue,geode_alu*7") 62 63(define_insn_reservation "idiv" 40 64 (and (eq_attr "cpu" "geode") 65 (eq_attr "type" "idiv")) 66 "geode_issue,geode_alu*40") 67 68;; The branch unit. 69(define_insn_reservation "call" 2 70 (and (eq_attr "cpu" "geode") 71 (eq_attr "type" "call,callv")) 72 "geode_issue,geode_alu*2") 73 74(define_insn_reservation "geode_branch" 1 75 (and (eq_attr "cpu" "geode") 76 (eq_attr "type" "ibr")) 77 "geode_issue,geode_alu") 78 79(define_insn_reservation "geode_pop_push" 1 80 (and (eq_attr "cpu" "geode") 81 (eq_attr "type" "pop,push")) 82 "geode_issue,geode_alu") 83 84(define_insn_reservation "geode_leave" 2 85 (and (eq_attr "cpu" "geode") 86 (eq_attr "type" "leave")) 87 "geode_issue,geode_alu*2") 88 89(define_insn_reservation "geode_load_str" 4 90 (and (eq_attr "cpu" "geode") 91 (and (eq_attr "type" "str") 92 (eq_attr "memory" "load,both"))) 93 "geode_issue,geode_alu*4") 94 95(define_insn_reservation "geode_store_str" 2 96 (and (eq_attr "cpu" "geode") 97 (and (eq_attr "type" "str") 98 (eq_attr "memory" "store"))) 99 "geode_issue,geode_alu*2") 100 101;; Be optimistic 102(define_insn_reservation "geode_unknown" 1 103 (and (eq_attr "cpu" "geode") 104 (eq_attr "type" "multi,other")) 105 "geode_issue,geode_alu") 106 107;; FPU 108 109(define_insn_reservation "geode_fop" 6 110 (and (eq_attr "cpu" "geode") 111 (eq_attr "type" "fop,fcmp")) 112 "geode_issue,geode_fpu*6") 113 114(define_insn_reservation "geode_fsimple" 1 115 (and (eq_attr "cpu" "geode") 116 (eq_attr "type" "fmov,fcmov,fsgn,fxch")) 117 "geode_issue,geode_fpu") 118 119(define_insn_reservation "geode_fist" 4 120 (and (eq_attr "cpu" "geode") 121 (eq_attr "type" "fistp,fisttp")) 122 "geode_issue,geode_fpu*4") 123 124(define_insn_reservation "geode_fmul" 10 125 (and (eq_attr "cpu" "geode") 126 (eq_attr "type" "fmul")) 127 "geode_issue,geode_fpu*10") 128 129(define_insn_reservation "geode_fdiv" 47 130 (and (eq_attr "cpu" "geode") 131 (eq_attr "type" "fdiv")) 132 "geode_issue,geode_fpu*47") 133 134;; We use minimal latency (fsin) here 135(define_insn_reservation "geode_fpspc" 54 136 (and (eq_attr "cpu" "geode") 137 (eq_attr "type" "fpspc")) 138 "geode_issue,geode_fpu*54") 139 140(define_insn_reservation "geode_frndint" 12 141 (and (eq_attr "cpu" "geode") 142 (eq_attr "type" "frndint")) 143 "geode_issue,geode_fpu*12") 144 145(define_insn_reservation "geode_mmxmov" 1 146 (and (eq_attr "cpu" "geode") 147 (eq_attr "type" "mmxmov")) 148 "geode_issue,geode_fpu") 149 150(define_insn_reservation "geode_mmx" 2 151 (and (eq_attr "cpu" "geode") 152 (eq_attr "type" "mmx,mmxadd,mmxmul,mmxcmp,mmxcvt,mmxshft")) 153 "geode_issue,geode_fpu*2") 154