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
13using namespace llvm;
14
15LLVM_DUMP_METHOD void GIMatchDagEdge::print(raw_ostream &OS) const {
16  OS << getFromMI()->getName() << "[" << getFromMO()->getName() << "] --["
17     << Name << "]--> " << getToMI()->getName() << "[" << getToMO()->getName()
18     << "]";
19}
20
21bool GIMatchDagEdge::isDefToUse() const {
22  // Def -> Def is invalid so we only need to check FromMO.
23  return FromMO->isDef();
24}
25
26void GIMatchDagEdge::reverse() {
27  std::swap(FromMI, ToMI);
28  std::swap(FromMO, ToMO);
29}
30
31#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
32LLVM_DUMP_METHOD void GIMatchDagEdge::dump() const { print(errs()); }
33#endif // if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
34
35raw_ostream &llvm::operator<<(raw_ostream &OS, const GIMatchDagEdge &E) {
36  E.print(OS);
37  return OS;
38}
39