228 lines
6.7 KiB
Markdown
228 lines
6.7 KiB
Markdown
;; Copyright (C) 2002, 2003, 2004, 2005, 2007 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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;; <http://www.gnu.org/licenses/>.
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;;
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;; DFA-based pipeline description for 5500
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(define_automaton "vr55")
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(define_cpu_unit "vr55_dp0" "vr55")
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(define_cpu_unit "vr55_dp1" "vr55")
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(define_cpu_unit "vr55_mem" "vr55")
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(define_cpu_unit "vr55_mac" "vr55")
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(define_cpu_unit "vr55_fp" "vr55")
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(define_cpu_unit "vr55_bru" "vr55")
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;;
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;; The ordering of the instruction-execution-path/resource-usage
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;; descriptions (also known as reservation RTL) is roughly ordered
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;; based on the define attribute RTL for the "type" classification.
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;; When modifying, remember that the first test that matches is the
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;; reservation used!
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;;
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(define_insn_reservation "ir_vr55_unknown" 1
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "unknown"))
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"vr55_dp0+vr55_dp1+vr55_mem+vr55_mac+vr55_fp+vr55_bru")
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;; Assume prediction fails.
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(define_insn_reservation "ir_vr55_branch" 2
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "branch,jump,call"))
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"vr55_bru")
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(define_insn_reservation "ir_vr55_load" 3
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "load,fpload,fpidxload"))
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"vr55_mem")
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(define_bypass 4
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"ir_vr55_load"
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"ir_vr55_mthilo,ir_vr55_imul_si,ir_vr55_imul_di,ir_vr55_imadd,
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ir_vr55_idiv_si,ir_vr55_idiv_di")
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(define_insn_reservation "ir_vr55_store" 0
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "store,fpstore,fpidxstore"))
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"vr55_mem")
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;; This reservation is for conditional move based on integer
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;; or floating point CC.
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(define_insn_reservation "ir_vr55_condmove" 2
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "condmove"))
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"vr55_dp0|vr55_dp1")
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;; Move to/from FPU registers
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(define_insn_reservation "ir_vr55_xfer" 2
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "mfc,mtc"))
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"vr55_dp0|vr55_dp1")
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(define_insn_reservation "ir_vr55_arith" 1
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "arith,shift,signext,slt,clz,const,logical,move,nop,trap"))
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"vr55_dp0|vr55_dp1")
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(define_bypass 2
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"ir_vr55_arith"
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"ir_vr55_mthilo,ir_vr55_imul_si,ir_vr55_imul_di,ir_vr55_imadd,
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ir_vr55_idiv_si,ir_vr55_idiv_di")
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(define_insn_reservation "ir_vr55_mthilo" 1
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "mthilo"))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_mfhilo" 5
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "mfhilo"))
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"vr55_mac")
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;; The default latency is for the GPR result of a mul. Bypasses handle the
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;; latency of {mul,mult}->{mfhi,mflo}.
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(define_insn_reservation "ir_vr55_imul_si" 5
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "imul,imul3")
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(eq_attr "mode" "SI")))
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"vr55_mac")
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;; The default latency is for pre-reload scheduling and handles the case
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;; where a pseudo destination will be stored in a GPR (as it usually is).
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;; The delay includes the latency of the dmult itself and the anticipated
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;; mflo or mfhi.
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;;
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;; Once the mflo or mfhi has been created, bypasses handle the latency
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;; between it and the dmult.
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(define_insn_reservation "ir_vr55_imul_di" 9
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "imul,imul3")
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(eq_attr "mode" "DI")))
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"vr55_mac*4")
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;; The default latency is as for ir_vr55_imul_si.
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(define_insn_reservation "ir_vr55_imadd" 5
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "imadd"))
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"vr55_mac")
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(define_bypass 1
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"ir_vr55_imul_si,ir_vr55_imadd"
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"ir_vr55_imadd"
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"mips_linked_madd_p")
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(define_bypass 2
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"ir_vr55_imul_si,ir_vr55_imadd"
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"ir_vr55_mfhilo")
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(define_bypass 4
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"ir_vr55_imul_di"
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"ir_vr55_mfhilo")
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;; Divide algorithm is early out with best latency of 7 pcycles.
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;; Use worst case for scheduling purposes.
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(define_insn_reservation "ir_vr55_idiv_si" 42
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "idiv")
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(eq_attr "mode" "SI")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_idiv_di" 74
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "idiv")
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(eq_attr "mode" "DI")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_fadd" 4
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "fadd"))
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"vr55_fp")
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(define_insn_reservation "ir_vr55_fmul_sf" 5
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fmul")
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(eq_attr "mode" "SF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_fmul_df" 6
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fmul")
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(eq_attr "mode" "DF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_fmadd_sf" 9
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fmadd")
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(eq_attr "mode" "SF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_fmadd_df" 10
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fmadd")
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(eq_attr "mode" "DF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_fdiv_sf" 30
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fdiv,frdiv,fsqrt")
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(eq_attr "mode" "SF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_fdiv_df" 59
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fdiv,frdiv,fsqrt")
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(eq_attr "mode" "DF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_fabs" 2
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "fabs,fneg,fmove"))
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"vr55_fp")
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(define_insn_reservation "ir_vr55_fcmp" 2
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "fcmp"))
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"vr55_fp")
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(define_insn_reservation "ir_vr55_fcvt_sf" 4
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fcvt")
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(eq_attr "mode" "SF")))
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"vr55_fp")
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(define_insn_reservation "ir_vr55_fcvt_df" 6
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "fcvt")
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(eq_attr "mode" "DF")))
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"vr55_fp")
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(define_insn_reservation "ir_vr55_frsqrt_sf" 60
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "frsqrt")
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(eq_attr "mode" "SF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_frsqrt_df" 118
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(and (eq_attr "cpu" "r5500")
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(and (eq_attr "type" "frsqrt")
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(eq_attr "mode" "DF")))
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"vr55_mac")
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(define_insn_reservation "ir_vr55_multi" 1
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(and (eq_attr "cpu" "r5500")
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(eq_attr "type" "multi"))
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"vr55_dp0+vr55_dp1+vr55_mem+vr55_mac+vr55_fp+vr55_bru")
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