From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/config/arm/vfp11.md | 92 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 gcc/config/arm/vfp11.md (limited to 'gcc/config/arm/vfp11.md') diff --git a/gcc/config/arm/vfp11.md b/gcc/config/arm/vfp11.md new file mode 100644 index 000000000..8f863fd70 --- /dev/null +++ b/gcc/config/arm/vfp11.md @@ -0,0 +1,92 @@ +;; ARM VFP11 pipeline description +;; Copyright (C) 2003, 2005, 2007, 2008 Free Software Foundation, Inc. +;; Written by CodeSourcery. +;; +;; 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 +;; . + +(define_automaton "vfp11") + +;; There are 3 pipelines in the VFP11 unit. +;; +;; - A 8-stage FMAC pipeline (7 execute + writeback) with forward from +;; fourth stage for simple operations. +;; +;; - A 5-stage DS pipeline (4 execute + writeback) for divide/sqrt insns. +;; These insns also uses first execute stage of FMAC pipeline. +;; +;; - A 4-stage LS pipeline (execute + 2 memory + writeback) with forward from +;; second memory stage for loads. + +;; We do not model Write-After-Read hazards. +;; We do not do write scheduling with the arm core, so it is only necessary +;; to model the first stage of each pipeline +;; ??? Need to model LS pipeline properly for load/store multiple? +;; We do not model fmstat properly. This could be done by modeling pipelines +;; properly and defining an absence set between a dummy fmstat unit and all +;; other vfp units. + +(define_cpu_unit "fmac" "vfp11") + +(define_cpu_unit "ds" "vfp11") + +(define_cpu_unit "vfp_ls" "vfp11") + +(define_cpu_unit "fmstat" "vfp11") + +(exclusion_set "fmac,ds" "fmstat") + +(define_insn_reservation "vfp_ffarith" 4 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "fcpys,ffariths,ffarithd,fcmps,fcmpd")) + "fmac") + +(define_insn_reservation "vfp_farith" 8 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "fadds,faddd,fconsts,fconstd,f_cvt,fmuls,fmacs")) + "fmac") + +(define_insn_reservation "vfp_fmul" 9 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "fmuld,fmacd")) + "fmac*2") + +(define_insn_reservation "vfp_fdivs" 19 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "fdivs")) + "ds*15") + +(define_insn_reservation "vfp_fdivd" 33 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "fdivd")) + "fmac+ds*29") + +;; Moves to/from arm regs also use the load/store pipeline. +(define_insn_reservation "vfp_fload" 4 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "f_loads,f_loadd,r_2_f")) + "vfp_ls") + +(define_insn_reservation "vfp_fstore" 4 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "f_stores,f_stored,f_2_r")) + "vfp_ls") + +(define_insn_reservation "vfp_to_cpsr" 4 + (and (eq_attr "generic_vfp" "yes") + (eq_attr "type" "f_flag")) + "fmstat,vfp_ls*3") + -- cgit v1.2.3