gcc/rtl-ssa/insn-utils.h

   1 // Instruction-related utilities for RTL SSA                        -*- C++ -*-
   2 // Copyright (C) 2020-2021 Free Software Foundation, Inc.
   3 //
   4 // This file is part of GCC.
   5 //
   6 // GCC is free software; you can redistribute it and/or modify it under
   7 // the terms of the GNU General Public License as published by the Free
   8 // Software Foundation; either version 3, or (at your option) any later
   9 // version.
  10 //
  11 // GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 // FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 // for more details.
  15 //
  16 // You should have received a copy of the GNU General Public License
  17 // along with GCC; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 namespace rtl_ssa {
  21
  22 // Return whichever of INSN1 and INSN2 occurs earlier in the function's
  23 // reverse postorder.
  24 inline insn_info *
  25 earlier_insn (insn_info *insn1, insn_info *insn2)
  26 {
  27   return *insn1 < *insn2 ? insn1 : insn2;
  28 }
  29
  30 // Return whichever of INSN1 and INSN2 occurs later in the function's
  31 // reverse postorder.
  32 inline insn_info *
  33 later_insn (insn_info *insn1, insn_info *insn2)
  34 {
  35   return *insn1 < *insn2 ? insn2 : insn1;
  36 }
  37
  38 // Return a closure of operator== for INSN.  See insn_is_changing for
  39 // the rationale for defining the function this way.
  40 inline insn_is_closure
  41 insn_is (const insn_info *insn)
  42 {
  43   return insn_is_closure (insn);
  44 }
  45
  46 }