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jeremybenn |
;; Geode Scheduling
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;; Copyright (C) 2006, 2007
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;; Free Software Foundation, Inc.
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;;
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;; This file is part of GCC.
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;;
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;; GCC is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;;
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;; GCC is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with GCC; see the file COPYING3. If not see
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;; .
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;;
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;; The Geode architecture is one insn issue processor.
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;;
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;; This description is based on data from the following documents:
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;;
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;; "AMD Geode GX Processor Data Book"
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;; Advanced Micro Devices, Inc., Aug 2005.
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;;
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;; "AMD Geode LX Processor Data Book"
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;; Advanced Micro Devices, Inc., Jan 2006.
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;;
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;;
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;; CPU execution units of the Geode:
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;;
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;; issue describes the issue pipeline.
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;; alu describes the Integer unit
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;; fpu describes the FP unit
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;;
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;; The fp unit is out of order execution unit with register renaming.
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;; There is also memory management unit and execution pipeline for
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;; load/store operations. We ignore it and difference between insns
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;; using memory and registers.
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(define_automaton "geode")
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(define_cpu_unit "geode_issue,geode_alu,geode_fpu" "geode")
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(define_insn_reservation "alu" 1
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "alu,alu1,negnot,icmp,lea,test,imov,imovx,icmov,incdec,setcc"))
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"geode_issue,geode_alu")
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(define_insn_reservation "shift" 2
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "ishift,ishift1,rotate,rotate1"))
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"geode_issue,geode_alu*2")
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(define_insn_reservation "imul" 7
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "imul"))
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"geode_issue,geode_alu*7")
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(define_insn_reservation "idiv" 40
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "idiv"))
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"geode_issue,geode_alu*40")
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;; The branch unit.
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(define_insn_reservation "call" 2
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "call,callv"))
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"geode_issue,geode_alu*2")
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(define_insn_reservation "geode_branch" 1
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "ibr"))
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"geode_issue,geode_alu")
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(define_insn_reservation "geode_pop_push" 1
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "pop,push"))
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"geode_issue,geode_alu")
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(define_insn_reservation "geode_leave" 2
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "leave"))
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"geode_issue,geode_alu*2")
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(define_insn_reservation "geode_load_str" 4
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(and (eq_attr "cpu" "geode")
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(and (eq_attr "type" "str")
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(eq_attr "memory" "load,both")))
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"geode_issue,geode_alu*4")
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(define_insn_reservation "geode_store_str" 2
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(and (eq_attr "cpu" "geode")
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(and (eq_attr "type" "str")
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(eq_attr "memory" "store")))
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"geode_issue,geode_alu*2")
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;; Be optimistic
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(define_insn_reservation "geode_unknown" 1
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "multi,other"))
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"geode_issue,geode_alu")
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;; FPU
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(define_insn_reservation "geode_fop" 6
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "fop,fcmp"))
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"geode_issue,geode_fpu*6")
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(define_insn_reservation "geode_fsimple" 1
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "fmov,fcmov,fsgn,fxch"))
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"geode_issue,geode_fpu")
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(define_insn_reservation "geode_fist" 4
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "fistp,fisttp"))
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"geode_issue,geode_fpu*4")
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(define_insn_reservation "geode_fmul" 10
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "fmul"))
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"geode_issue,geode_fpu*10")
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(define_insn_reservation "geode_fdiv" 47
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "fdiv"))
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"geode_issue,geode_fpu*47")
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;; We use minimal latency (fsin) here
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(define_insn_reservation "geode_fpspc" 54
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "fpspc"))
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"geode_issue,geode_fpu*54")
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(define_insn_reservation "geode_frndint" 12
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "frndint"))
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"geode_issue,geode_fpu*12")
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(define_insn_reservation "geode_mmxmov" 1
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "mmxmov"))
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"geode_issue,geode_fpu")
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(define_insn_reservation "geode_mmx" 2
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(and (eq_attr "cpu" "geode")
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(eq_attr "type" "mmx,mmxadd,mmxmul,mmxcmp,mmxcvt,mmxshft"))
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"geode_issue,geode_fpu*2")
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