1 files changed, 0 insertions, 162 deletions

diff --git a/wasm/LTO.cpp b/wasm/LTO.cpp
deleted file mode 100644
index 96a947e29d41..000000000000
--- a/wasm/LTO.cpp
+++ /dev/null
@@ -1,162 +0,0 @@
-//===- LTO.cpp ------------------------------------------------------------===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "LTO.h"
-#include "Config.h"
-#include "InputFiles.h"
-#include "Symbols.h"
-#include "lld/Common/ErrorHandler.h"
-#include "lld/Common/Strings.h"
-#include "lld/Common/TargetOptionsCommandFlags.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/IR/DiagnosticPrinter.h"
-#include "llvm/LTO/Caching.h"
-#include "llvm/LTO/Config.h"
-#include "llvm/LTO/LTO.h"
-#include "llvm/Object/SymbolicFile.h"
-#include "llvm/Support/CodeGen.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-#include <cstddef>
-#include <memory>
-#include <string>
-#include <system_error>
-#include <vector>
-
-using namespace llvm;
-using namespace lld;
-using namespace lld::wasm;
-
-static std::unique_ptr<lto::LTO> createLTO() {
-  lto::Config C;
-  C.Options = InitTargetOptionsFromCodeGenFlags();
-
-  // Always emit a section per function/data with LTO.
-  C.Options.FunctionSections = true;
-  C.Options.DataSections = true;
-
-  // Wasm currently only supports ThreadModel::Single
-  C.Options.ThreadModel = ThreadModel::Single;
-
-  C.DisableVerify = Config->DisableVerify;
-  C.DiagHandler = diagnosticHandler;
-  C.OptLevel = Config->LTOO;
-  C.MAttrs = GetMAttrs();
-
-  if (Config->Relocatable)
-    C.RelocModel = None;
-  else if (Config->Pic)
-    C.RelocModel = Reloc::PIC_;
-  else
-    C.RelocModel = Reloc::Static;
-
-  if (Config->SaveTemps)
-    checkError(C.addSaveTemps(Config->OutputFile.str() + ".",
-                              /*UseInputModulePath*/ true));
-
-  lto::ThinBackend Backend;
-  if (Config->ThinLTOJobs != -1U)
-    Backend = lto::createInProcessThinBackend(Config->ThinLTOJobs);
-  return llvm::make_unique<lto::LTO>(std::move(C), Backend,
-                                     Config->LTOPartitions);
-}
-
-BitcodeCompiler::BitcodeCompiler() : LTOObj(createLTO()) {}
-
-BitcodeCompiler::~BitcodeCompiler() = default;
-
-static void undefine(Symbol *S) {
-  if (auto F = dyn_cast<DefinedFunction>(S))
-    replaceSymbol<UndefinedFunction>(F, F->getName(), 0, F->getFile(),
-                                     F->Signature);
-  else if (isa<DefinedData>(S))
-    replaceSymbol<UndefinedData>(S, S->getName(), 0, S->getFile());
-  else
-    llvm_unreachable("unexpected symbol kind");
-}
-
-void BitcodeCompiler::add(BitcodeFile &F) {
-  lto::InputFile &Obj = *F.Obj;
-  unsigned SymNum = 0;
-  ArrayRef<Symbol *> Syms = F.getSymbols();
-  std::vector<lto::SymbolResolution> Resols(Syms.size());
-
-  // Provide a resolution to the LTO API for each symbol.
-  for (const lto::InputFile::Symbol &ObjSym : Obj.symbols()) {
-    Symbol *Sym = Syms[SymNum];
-    lto::SymbolResolution &R = Resols[SymNum];
-    ++SymNum;
-
-    // Ideally we shouldn't check for SF_Undefined but currently IRObjectFile
-    // reports two symbols for module ASM defined. Without this check, lld
-    // flags an undefined in IR with a definition in ASM as prevailing.
-    // Once IRObjectFile is fixed to report only one symbol this hack can
-    // be removed.
-    R.Prevailing = !ObjSym.isUndefined() && Sym->getFile() == &F;
-    R.VisibleToRegularObj = Config->Relocatable || Sym->IsUsedInRegularObj ||
-                            (R.Prevailing && Sym->isExported());
-    if (R.Prevailing)
-      undefine(Sym);
-  }
-  checkError(LTOObj->add(std::move(F.Obj), Resols));
-}
-
-// Merge all the bitcode files we have seen, codegen the result
-// and return the resulting objects.
-std::vector<StringRef> BitcodeCompiler::compile() {
-  unsigned MaxTasks = LTOObj->getMaxTasks();
-  Buf.resize(MaxTasks);
-  Files.resize(MaxTasks);
-
-  // The --thinlto-cache-dir option specifies the path to a directory in which
-  // to cache native object files for ThinLTO incremental builds. If a path was
-  // specified, configure LTO to use it as the cache directory.
-  lto::NativeObjectCache Cache;
-  if (!Config->ThinLTOCacheDir.empty())
-    Cache = check(
-        lto::localCache(Config->ThinLTOCacheDir,
-                        [&](size_t Task, std::unique_ptr<MemoryBuffer> MB) {
-                          Files[Task] = std::move(MB);
-                        }));
-
-  checkError(LTOObj->run(
-      [&](size_t Task) {
-        return llvm::make_unique<lto::NativeObjectStream>(
-            llvm::make_unique<raw_svector_ostream>(Buf[Task]));
-      },
-      Cache));
-
-  if (!Config->ThinLTOCacheDir.empty())
-    pruneCache(Config->ThinLTOCacheDir, Config->ThinLTOCachePolicy);
-
-  std::vector<StringRef> Ret;
-  for (unsigned I = 0; I != MaxTasks; ++I) {
-    if (Buf[I].empty())
-      continue;
-    if (Config->SaveTemps) {
-      if (I == 0)
-        saveBuffer(Buf[I], Config->OutputFile + ".lto.o");
-      else
-        saveBuffer(Buf[I], Config->OutputFile + Twine(I) + ".lto.o");
-    }
-    Ret.emplace_back(Buf[I].data(), Buf[I].size());
-  }
-
-  for (std::unique_ptr<MemoryBuffer> &File : Files)
-    if (File)
-      Ret.push_back(File->getBuffer());
-
-  return Ret;
-}