1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/rtl-ssa/insn-utils.h b/gcc/rtl-ssa/insn-utils.h
new file mode 100644
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+++ b/gcc/rtl-ssa/insn-utils.h
@@ -0,0 +1,46 @@
+// Instruction-related utilities for RTL SSA                        -*- C++ -*-
+// Copyright (C) 2020 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
+// <http://www.gnu.org/licenses/>.
+
+namespace rtl_ssa {
+
+// Return whichever of INSN1 and INSN2 occurs earlier in the function's
+// reverse postorder.
+inline insn_info *
+earlier_insn (insn_info *insn1, insn_info *insn2)
+{
+  return *insn1 < *insn2 ? insn1 : insn2;
+}
+
+// Return whichever of INSN1 and INSN2 occurs later in the function's
+// reverse postorder.
+inline insn_info *
+later_insn (insn_info *insn1, insn_info *insn2)
+{
+  return *insn1 < *insn2 ? insn2 : insn1;
+}
+
+// Return a closure of operator== for INSN.  See insn_is_changing for
+// the rationale for defining the function this way.
+inline insn_is_closure
+insn_is (const insn_info *insn)
+{
+  return insn_is_closure (insn);
+}
+
+}