Imported Upstream version 5.18.0.234

Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f

external/llvm/lib/Support/TargetRegistry.cpp

@@ -1,135 +0,0 @@
-//===--- TargetRegistry.cpp - Target registration -------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/raw_ostream.h"
-#include <cassert>
-#include <vector>
-using namespace llvm;
-
-// Clients are responsible for avoid race conditions in registration.
-static Target *FirstTarget = nullptr;
-
-iterator_range<TargetRegistry::iterator> TargetRegistry::targets() {
-  return make_range(iterator(FirstTarget), iterator());
-}
-
-const Target *TargetRegistry::lookupTarget(const std::string &ArchName,
-                                           Triple &TheTriple,
-                                           std::string &Error) {
-  // Allocate target machine.  First, check whether the user has explicitly
-  // specified an architecture to compile for. If so we have to look it up by
-  // name, because it might be a backend that has no mapping to a target triple.
-  const Target *TheTarget = nullptr;
-  if (!ArchName.empty()) {
-    auto I = find_if(targets(),
-                     [&](const Target &T) { return ArchName == T.getName(); });
-
-    if (I == targets().end()) {
-      Error = "error: invalid target '" + ArchName + "'.\n";
-      return nullptr;
-    }
-
-    TheTarget = &*I;
-
-    // Adjust the triple to match (if known), otherwise stick with the
-    // given triple.
-    Triple::ArchType Type = Triple::getArchTypeForLLVMName(ArchName);
-    if (Type != Triple::UnknownArch)
-      TheTriple.setArch(Type);
-  } else {
-    // Get the target specific parser.
-    std::string TempError;
-    TheTarget = TargetRegistry::lookupTarget(TheTriple.getTriple(), TempError);
-    if (!TheTarget) {
-      Error = ": error: unable to get target for '"
-            + TheTriple.getTriple()
-            + "', see --version and --triple.\n";
-      return nullptr;
-    }
-  }
-
-  return TheTarget;
-}
-
-const Target *TargetRegistry::lookupTarget(const std::string &TT,
-                                           std::string &Error) {
-  // Provide special warning when no targets are initialized.
-  if (targets().begin() == targets().end()) {
-    Error = "Unable to find target for this triple (no targets are registered)";
-    return nullptr;
-  }
-  Triple::ArchType Arch = Triple(TT).getArch();
-  auto ArchMatch = [&](const Target &T) { return T.ArchMatchFn(Arch); };
-  auto I = find_if(targets(), ArchMatch);
-
-  if (I == targets().end()) {
-    Error = "No available targets are compatible with this triple.";
-    return nullptr;
-  }
-
-  auto J = std::find_if(std::next(I), targets().end(), ArchMatch);
-  if (J != targets().end()) {
-    Error = std::string("Cannot choose between targets \"") + I->Name +
-            "\" and \"" + J->Name + "\"";
-    return nullptr;
-  }
-
-  return &*I;
-}
-
-void TargetRegistry::RegisterTarget(Target &T, const char *Name,
-                                    const char *ShortDesc,
-                                    const char *BackendName,
-                                    Target::ArchMatchFnTy ArchMatchFn,
-                                    bool HasJIT) {
-  assert(Name && ShortDesc && ArchMatchFn &&
-         "Missing required target information!");
-
-  // Check if this target has already been initialized, we allow this as a
-  // convenience to some clients.
-  if (T.Name)
-    return;
-         
-  // Add to the list of targets.
-  T.Next = FirstTarget;
-  FirstTarget = &T;
-
-  T.Name = Name;
-  T.ShortDesc = ShortDesc;
-  T.BackendName = BackendName;
-  T.ArchMatchFn = ArchMatchFn;
-  T.HasJIT = HasJIT;
-}
-
-static int TargetArraySortFn(const std::pair<StringRef, const Target *> *LHS,
-                             const std::pair<StringRef, const Target *> *RHS) {
-  return LHS->first.compare(RHS->first);
-}
-
-void TargetRegistry::printRegisteredTargetsForVersion(raw_ostream &OS) {
-  std::vector<std::pair<StringRef, const Target*> > Targets;
-  size_t Width = 0;
-  for (const auto &T : TargetRegistry::targets()) {
-    Targets.push_back(std::make_pair(T.getName(), &T));
-    Width = std::max(Width, Targets.back().first.size());
-  }
-  array_pod_sort(Targets.begin(), Targets.end(), TargetArraySortFn);
-
-  OS << "  Registered Targets:\n";
-  for (unsigned i = 0, e = Targets.size(); i != e; ++i) {
-    OS << "    " << Targets[i].first;
-    OS.indent(Width - Targets[i].first.size()) << " - "
-      << Targets[i].second->getShortDescription() << '\n';
-  }
-  if (Targets.empty())
-    OS << "    (none)\n";
-}