llvm/utils/TableGen/GlobalISel/GIMatchDagEdge.cpp

   1 //===- GIMatchDagEdge.cpp - An edge describing a def/use lookup -----------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "GIMatchDagEdge.h"
  10 #include "GIMatchDagInstr.h"
  11 #include "llvm/Support/raw_ostream.h"
  12
  13 using namespace llvm;
  14
  15 LLVM_DUMP_METHOD void GIMatchDagEdge::print(raw_ostream &OS) const {
  16   OS << getFromMI()->getName() << "[" << getFromMO()->getName() << "] --["
  17      << Name << "]--> " << getToMI()->getName() << "[" << getToMO()->getName()
  18      << "]";
  19 }
  20
  21 bool GIMatchDagEdge::isDefToUse() const {
  22   // Def -> Def is invalid so we only need to check FromMO.
  23   return FromMO->isDef();
  24 }
  25
  26 void GIMatchDagEdge::reverse() {
  27   std::swap(FromMI, ToMI);
  28   std::swap(FromMO, ToMO);
  29 }
  30
  31 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  32 LLVM_DUMP_METHOD void GIMatchDagEdge::dump() const { print(errs()); }
  33 #endif // if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  34
  35 raw_ostream &llvm::operator<<(raw_ostream &OS, const GIMatchDagEdge &E) {
  36   E.print(OS);
  37   return OS;
  38 }