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;; Scheduling description for PowerPC A2 processors.
;; Copyright (C) 2009 Free Software Foundation, Inc.
;; Contributed by Ben Elliston (bje@au.ibm.com)
;; 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
;; <http://www.gnu.org/licenses/>.
(define_automaton "ppca2")
;; CPU units
;; The multiplier pipeline.
(define_cpu_unit "mult" "ppca2")
;; The auxillary processor unit (FP/vector unit).
(define_cpu_unit "axu" "ppca2")
;; D.4.6
;; Some peculiarities for certain SPRs
(define_insn_reservation "ppca2-mfcr" 1
(and (eq_attr "type" "mfcr")
(eq_attr "cpu" "ppca2"))
"nothing")
(define_insn_reservation "ppca2-mfjmpr" 5
(and (eq_attr "type" "mfjmpr")
(eq_attr "cpu" "ppca2"))
"nothing")
(define_insn_reservation "ppca2-mtjmpr" 5
(and (eq_attr "type" "mtjmpr")
(eq_attr "cpu" "ppca2"))
"nothing")
;; D.4.8
(define_insn_reservation "ppca2-imul" 1
(and (eq_attr "type" "imul,imul2,imul3,imul_compare")
(eq_attr "cpu" "ppca2"))
"nothing")
;; FIXME: latency and multiplier reservation for 64-bit multiply?
(define_insn_reservation "ppca2-lmul" 6
(and (eq_attr "type" "lmul,lmul_compare")
(eq_attr "cpu" "ppca2"))
"mult*3")
;; D.4.9
(define_insn_reservation "ppca2-idiv" 32
(and (eq_attr "type" "idiv")
(eq_attr "cpu" "ppca2"))
"mult*32")
(define_insn_reservation "ppca2-ldiv" 65
(and (eq_attr "type" "ldiv")
(eq_attr "cpu" "ppca2"))
"mult*65")
;; D.4.13
(define_insn_reservation "ppca2-load" 5
(and (eq_attr "type" "load,load_ext,load_ext_u,load_ext_ux,load_ux,load_u")
(eq_attr "cpu" "ppca2"))
"nothing")
;; D.8.1
(define_insn_reservation "ppca2-fp" 6
(and (eq_attr "type" "fp") ;; Ignore fpsimple insn types (SPE only).
(eq_attr "cpu" "ppca2"))
"axu")
;; D.8.4
(define_insn_reservation "ppca2-fp-load" 6
(and (eq_attr "type" "fpload,fpload_u,fpload_ux")
(eq_attr "cpu" "ppca2"))
"axu")
;; D.8.5
(define_insn_reservation "ppca2-fp-store" 2
(and (eq_attr "type" "fpstore,fpstore_u,fpstore_ux")
(eq_attr "cpu" "ppca2"))
"axu")
;; D.8.6
(define_insn_reservation "ppca2-fpcompare" 5
(and (eq_attr "type" "fpcompare")
(eq_attr "cpu" "ppca2"))
"axu")
;; D.8.7
;;
;; Instructions from the same thread succeeding the floating-point
;; divide cannot be executed until the floating-point divide has
;; completed. Since there is nothing else we can do, this thread will
;; just have to stall.
(define_insn_reservation "ppca2-ddiv" 72
(and (eq_attr "type" "ddiv")
(eq_attr "cpu" "ppca2"))
"axu")
(define_insn_reservation "ppca2-sdiv" 59
(and (eq_attr "type" "sdiv")
(eq_attr "cpu" "ppca2"))
"axu")
;; D.8.8
;;
;; Instructions from the same thread succeeding the floating-point
;; divide cannot be executed until the floating-point divide has
;; completed. Since there is nothing else we can do, this thread will
;; just have to stall.
(define_insn_reservation "ppca2-dsqrt" 69
(and (eq_attr "type" "dsqrt")
(eq_attr "cpu" "ppca2"))
"axu")
(define_insn_reservation "ppca2-ssqrt" 65
(and (eq_attr "type" "ssqrt")
(eq_attr "cpu" "ppca2"))
"axu")
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