Subversion Repositories openrisc_2011-10-31

;; Geode Scheduling

;; Copyright (C) 2006, 2007

;; Free Software Foundation, Inc.

;;

;; This file is part of GCC.

;;

;; GCC is free software; you can redistribute it and/or modify

;; it under the terms of the GNU General Public License as published by

;; the Free Software Foundation; either version 3, or (at your option)

;; any later version.

;;

;; GCC is distributed in the hope that it will be useful,

;; but WITHOUT ANY WARRANTY; without even the implied warranty of

;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

;; GNU General Public License for more details.

;;

;; You should have received a copy of the GNU General Public License

;; along with GCC; see the file COPYING3.  If not see

;; .

;;

;; The Geode architecture is one insn issue processor.

;;

;; This description is based on data from the following documents:

;;

;;    "AMD Geode GX Processor Data Book"

;;    Advanced Micro Devices, Inc., Aug 2005.

;;

;;    "AMD Geode LX Processor Data Book"

;;    Advanced Micro Devices, Inc., Jan 2006.

;;

;;

;; CPU execution units of the Geode:

;;

;; issue        describes the issue pipeline.

;; alu          describes the Integer unit

;; fpu          describes the FP unit

;;

;; The fp unit is out of order execution unit with register renaming.

;; There is also memory management unit and execution pipeline for

;; load/store operations.  We ignore it and difference between insns

;; using memory and registers.

(define_automaton "geode")

(define_cpu_unit "geode_issue,geode_alu,geode_fpu" "geode")

(define_insn_reservation "alu" 1

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "alu,alu1,negnot,icmp,lea,test,imov,imovx,icmov,incdec,setcc"))

                         "geode_issue,geode_alu")

(define_insn_reservation "shift" 2

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "ishift,ishift1,rotate,rotate1"))

                         "geode_issue,geode_alu*2")

(define_insn_reservation "imul" 7

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "imul"))

                         "geode_issue,geode_alu*7")

(define_insn_reservation "idiv" 40

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "idiv"))

                         "geode_issue,geode_alu*40")

;; The branch unit.

(define_insn_reservation "call" 2

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "call,callv"))

                         "geode_issue,geode_alu*2")

(define_insn_reservation "geode_branch" 1

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "ibr"))

                         "geode_issue,geode_alu")

(define_insn_reservation "geode_pop_push" 1

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "pop,push"))

                         "geode_issue,geode_alu")

(define_insn_reservation "geode_leave" 2

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "leave"))

                         "geode_issue,geode_alu*2")

(define_insn_reservation "geode_load_str" 4

                         (and (eq_attr "cpu" "geode")

                              (and (eq_attr "type" "str")

                                   (eq_attr "memory" "load,both")))

                         "geode_issue,geode_alu*4")

(define_insn_reservation "geode_store_str" 2

                         (and (eq_attr "cpu" "geode")

                              (and (eq_attr "type" "str")

                                   (eq_attr "memory" "store")))

                         "geode_issue,geode_alu*2")

;; Be optimistic

(define_insn_reservation "geode_unknown" 1

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "multi,other"))

                         "geode_issue,geode_alu")

;; FPU

(define_insn_reservation "geode_fop" 6

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "fop,fcmp"))

                         "geode_issue,geode_fpu*6")

(define_insn_reservation "geode_fsimple" 1

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "fmov,fcmov,fsgn,fxch"))

                         "geode_issue,geode_fpu")

(define_insn_reservation "geode_fist" 4

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "fistp,fisttp"))

                         "geode_issue,geode_fpu*4")

(define_insn_reservation "geode_fmul" 10

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "fmul"))

                         "geode_issue,geode_fpu*10")

(define_insn_reservation "geode_fdiv" 47

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "fdiv"))

                         "geode_issue,geode_fpu*47")

;; We use minimal latency (fsin) here

(define_insn_reservation "geode_fpspc" 54

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "fpspc"))

                         "geode_issue,geode_fpu*54")

(define_insn_reservation "geode_frndint" 12

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "frndint"))

                         "geode_issue,geode_fpu*12")

(define_insn_reservation "geode_mmxmov" 1

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "mmxmov"))

                         "geode_issue,geode_fpu")

(define_insn_reservation "geode_mmx" 2

                         (and (eq_attr "cpu" "geode")

                              (eq_attr "type" "mmx,mmxadd,mmxmul,mmxcmp,mmxcvt,mmxshft"))

                         "geode_issue,geode_fpu*2")