diff --git a/clang-tools-extra/clang-change-namespace/tool/ClangChangeNamespace.cpp b/clang-tools-extra/clang-change-namespace/tool/ClangChangeNamespace.cpp
--- a/clang-tools-extra/clang-change-namespace/tool/ClangChangeNamespace.cpp
+++ b/clang-tools-extra/clang-change-namespace/tool/ClangChangeNamespace.cpp
@@ -37,6 +37,7 @@
 #include "clang/Tooling/Refactoring.h"
 #include "clang/Tooling/Tooling.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/YAMLTraits.h"
 
@@ -98,7 +99,7 @@
 } // anonymous namespace
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
   tooling::CommonOptionsParser OptionsParser(argc, argv,
                                              ChangeNamespaceCategory);
   const auto &Files = OptionsParser.getSourcePathList();
diff --git a/clang-tools-extra/clang-doc/tool/ClangDocMain.cpp b/clang-tools-extra/clang-doc/tool/ClangDocMain.cpp
--- a/clang-tools-extra/clang-doc/tool/ClangDocMain.cpp
+++ b/clang-tools-extra/clang-doc/tool/ClangDocMain.cpp
@@ -36,6 +36,7 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Mutex.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Process.h"
@@ -179,7 +180,7 @@
 }
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
   std::error_code OK;
 
   ExecutorName.setInitialValue("all-TUs");
diff --git a/clang-tools-extra/clang-move/tool/ClangMove.cpp b/clang-tools-extra/clang-move/tool/ClangMove.cpp
--- a/clang-tools-extra/clang-move/tool/ClangMove.cpp
+++ b/clang-tools-extra/clang-move/tool/ClangMove.cpp
@@ -15,6 +15,7 @@
 #include "clang/Tooling/Tooling.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Process.h"
 #include "llvm/Support/Signals.h"
@@ -94,7 +95,7 @@
 } // namespace
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
   tooling::CommonOptionsParser OptionsParser(argc, argv, ClangMoveCategory);
 
   if (OldDependOnNew && NewDependOnOld) {
diff --git a/clang-tools-extra/clang-query/tool/ClangQuery.cpp b/clang-tools-extra/clang-query/tool/ClangQuery.cpp
--- a/clang-tools-extra/clang-query/tool/ClangQuery.cpp
+++ b/clang-tools-extra/clang-query/tool/ClangQuery.cpp
@@ -33,6 +33,7 @@
 #include "clang/Tooling/Tooling.h"
 #include "llvm/LineEditor/LineEditor.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Signals.h"
 #include <fstream>
@@ -81,7 +82,7 @@
 }
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
 
   CommonOptionsParser OptionsParser(argc, argv, ClangQueryCategory);
 
diff --git a/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp b/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp
--- a/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp
+++ b/clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp
@@ -18,6 +18,7 @@
 #include "../ClangTidyForceLinker.h"
 #include "../GlobList.h"
 #include "clang/Tooling/CommonOptionsParser.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Process.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/TargetSelect.h"
@@ -327,7 +328,7 @@
 }
 
 static int clangTidyMain(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
   CommonOptionsParser OptionsParser(argc, argv, ClangTidyCategory,
                                     cl::ZeroOrMore);
   llvm::IntrusiveRefCntPtr<vfs::OverlayFileSystem> BaseFS(
diff --git a/clang-tools-extra/clangd/index/dex/dexp/Dexp.cpp b/clang-tools-extra/clangd/index/dex/dexp/Dexp.cpp
--- a/clang-tools-extra/clangd/index/dex/dexp/Dexp.cpp
+++ b/clang-tools-extra/clangd/index/dex/dexp/Dexp.cpp
@@ -19,6 +19,7 @@
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/LineEditor/LineEditor.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Signals.h"
 
 namespace clang {
@@ -275,9 +276,9 @@
 int main(int argc, const char *argv[]) {
   using namespace clang::clangd;
 
+  llvm::InitLLVM X(argc, argv);
   llvm::cl::ParseCommandLineOptions(argc, argv, Overview);
   llvm::cl::ResetCommandLineParser(); // We reuse it for REPL commands.
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
 
   std::unique_ptr<SymbolIndex> Index;
   reportTime("Dex build", [&]() {
diff --git a/clang-tools-extra/clangd/indexer/IndexerMain.cpp b/clang-tools-extra/clangd/indexer/IndexerMain.cpp
--- a/clang-tools-extra/clangd/indexer/IndexerMain.cpp
+++ b/clang-tools-extra/clangd/indexer/IndexerMain.cpp
@@ -21,6 +21,7 @@
 #include "clang/Tooling/Execution.h"
 #include "clang/Tooling/Tooling.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Signals.h"
 
 namespace clang {
@@ -92,7 +93,7 @@
 } // namespace clang
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
 
   const char *Overview = R"(
   Creates an index of symbol information etc in a whole project.
diff --git a/clang-tools-extra/clangd/tool/ClangdMain.cpp b/clang-tools-extra/clangd/tool/ClangdMain.cpp
--- a/clang-tools-extra/clangd/tool/ClangdMain.cpp
+++ b/clang-tools-extra/clangd/tool/ClangdMain.cpp
@@ -21,6 +21,7 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Process.h"
 #include "llvm/Support/Program.h"
@@ -433,8 +434,8 @@
   using namespace clang;
   using namespace clang::clangd;
 
+  llvm::InitLLVM X(argc, argv);
   llvm::InitializeAllTargetInfos();
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
   llvm::cl::SetVersionPrinter([](llvm::raw_ostream &OS) {
     OS << clang::getClangToolFullVersion("clangd") << "\n";
   });
diff --git a/clang-tools-extra/tool-template/ToolTemplate.cpp b/clang-tools-extra/tool-template/ToolTemplate.cpp
--- a/clang-tools-extra/tool-template/ToolTemplate.cpp
+++ b/clang-tools-extra/tool-template/ToolTemplate.cpp
@@ -44,6 +44,7 @@
 #include "clang/Tooling/Refactoring/AtomicChange.h"
 #include "clang/Tooling/Tooling.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Signals.h"
 
@@ -88,7 +89,7 @@
 static cl::OptionCategory ToolTemplateCategory("tool-template options");
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
 
   auto Executor = clang::tooling::createExecutorFromCommandLineArgs(
       argc, argv, ToolTemplateCategory);
diff --git a/clang/tools/arcmt-test/arcmt-test.cpp b/clang/tools/arcmt-test/arcmt-test.cpp
--- a/clang/tools/arcmt-test/arcmt-test.cpp
+++ b/clang/tools/arcmt-test/arcmt-test.cpp
@@ -15,6 +15,7 @@
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Lex/PreprocessorOptions.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Signals.h"
@@ -340,8 +341,8 @@
 //===----------------------------------------------------------------------===//
 
 int main(int argc, const char **argv) {
+  llvm::InitLLVM X(argc, argv);
   void *MainAddr = (void*) (intptr_t) GetExecutablePath;
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
 
   std::string
     resourcesPath = CompilerInvocation::GetResourcesPath(argv[0], MainAddr);
diff --git a/clang/tools/c-index-test/core_main.cpp b/clang/tools/c-index-test/core_main.cpp
--- a/clang/tools/c-index-test/core_main.cpp
+++ b/clang/tools/c-index-test/core_main.cpp
@@ -13,16 +13,17 @@
 #include "clang/Frontend/CompilerInstance.h"
 #include "clang/Frontend/CompilerInvocation.h"
 #include "clang/Frontend/FrontendAction.h"
-#include "clang/Index/IndexingAction.h"
 #include "clang/Index/IndexDataConsumer.h"
+#include "clang/Index/IndexingAction.h"
 #include "clang/Index/USRGeneration.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Serialization/ASTReader.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
+#include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/PrettyStackTrace.h"
 
 using namespace clang;
 using namespace clang::index;
@@ -320,8 +321,7 @@
 //===----------------------------------------------------------------------===//
 
 int indextest_core_main(int argc, const char **argv) {
-  sys::PrintStackTraceOnErrorSignal(argv[0]);
-  PrettyStackTraceProgram X(argc, argv);
+  llvm::InitLLVM X(argc, argv);
   void *MainAddr = (void*) (intptr_t) indextest_core_main;
   std::string Executable = llvm::sys::fs::getMainExecutable(argv[0], MainAddr);
 
diff --git a/clang/tools/clang-check/ClangCheck.cpp b/clang/tools/clang-check/ClangCheck.cpp
--- a/clang/tools/clang-check/ClangCheck.cpp
+++ b/clang/tools/clang-check/ClangCheck.cpp
@@ -27,6 +27,7 @@
 #include "clang/Tooling/Tooling.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Option/OptTable.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/TargetSelect.h"
@@ -151,7 +152,7 @@
 } // namespace
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
 
   // Initialize targets for clang module support.
   llvm::InitializeAllTargets();
diff --git a/clang/tools/clang-extdef-mapping/ClangExtDefMapGen.cpp b/clang/tools/clang-extdef-mapping/ClangExtDefMapGen.cpp
--- a/clang/tools/clang-extdef-mapping/ClangExtDefMapGen.cpp
+++ b/clang/tools/clang-extdef-mapping/ClangExtDefMapGen.cpp
@@ -20,6 +20,7 @@
 #include "clang/Tooling/CommonOptionsParser.h"
 #include "clang/Tooling/Tooling.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Signals.h"
 #include <sstream>
 #include <string>
@@ -113,8 +114,7 @@
 
 int main(int argc, const char **argv) {
   // Print a stack trace if we signal out.
-  sys::PrintStackTraceOnErrorSignal(argv[0], false);
-  PrettyStackTraceProgram X(argc, argv);
+  llvm::InitLLVM X(argc, argv);
 
   const char *Overview = "\nThis tool collects the USR name and location "
                          "of external definitions in the source files "
diff --git a/clang/tools/clang-offload-bundler/ClangOffloadBundler.cpp b/clang/tools/clang-offload-bundler/ClangOffloadBundler.cpp
--- a/clang/tools/clang-offload-bundler/ClangOffloadBundler.cpp
+++ b/clang/tools/clang-offload-bundler/ClangOffloadBundler.cpp
@@ -30,6 +30,7 @@
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/Program.h"
@@ -816,7 +817,7 @@
 }
 
 int main(int argc, const char **argv) {
-  sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
 
   cl::HideUnrelatedOptions(ClangOffloadBundlerCategory);
   cl::SetVersionPrinter(PrintVersion);
diff --git a/clang/tools/clang-offload-wrapper/ClangOffloadWrapper.cpp b/clang/tools/clang-offload-wrapper/ClangOffloadWrapper.cpp
--- a/clang/tools/clang-offload-wrapper/ClangOffloadWrapper.cpp
+++ b/clang/tools/clang-offload-wrapper/ClangOffloadWrapper.cpp
@@ -27,6 +27,7 @@
 #include "llvm/Support/Errc.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorOr.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/ToolOutputFile.h"
@@ -303,7 +304,7 @@
 } // anonymous namespace
 
 int main(int argc, const char **argv) {
-  sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
 
   cl::HideUnrelatedOptions(ClangOffloadWrapperCategory);
   cl::SetVersionPrinter([](raw_ostream &OS) {
diff --git a/clang/tools/clang-refactor/ClangRefactor.cpp b/clang/tools/clang-refactor/ClangRefactor.cpp
--- a/clang/tools/clang-refactor/ClangRefactor.cpp
+++ b/clang/tools/clang-refactor/ClangRefactor.cpp
@@ -24,6 +24,7 @@
 #include "clang/Tooling/Tooling.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/raw_ostream.h"
 #include <string>
@@ -608,7 +609,7 @@
 } // end anonymous namespace
 
 int main(int argc, const char **argv) {
-  llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
+  llvm::InitLLVM X(argc, argv);
 
   ClangRefactorTool RefactorTool;
 
diff --git a/clang/utils/TableGen/TableGen.cpp b/clang/utils/TableGen/TableGen.cpp
--- a/clang/utils/TableGen/TableGen.cpp
+++ b/clang/utils/TableGen/TableGen.cpp
@@ -10,9 +10,10 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "TableGenBackends.h" // Declares all backends.
 #include "ClangASTEmitters.h"
+#include "TableGenBackends.h" // Declares all backends.
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/TableGen/Error.h"
@@ -349,8 +350,7 @@
 }
 
 int main(int argc, char **argv) {
-  sys::PrintStackTraceOnErrorSignal(argv[0]);
-  PrettyStackTraceProgram X(argc, argv);
+  llvm::InitLLVM X(argc, argv);
   cl::ParseCommandLineOptions(argc, argv);
 
   llvm_shutdown_obj Y;
diff --git a/llvm/utils/KillTheDoctor/KillTheDoctor.cpp b/llvm/utils/KillTheDoctor/KillTheDoctor.cpp
--- a/llvm/utils/KillTheDoctor/KillTheDoctor.cpp
+++ b/llvm/utils/KillTheDoctor/KillTheDoctor.cpp
@@ -36,6 +36,7 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/PrettyStackTrace.h"
@@ -295,8 +296,7 @@
 
 int main(int argc, char **argv) {
   // Print a stack trace if we signal out.
-  sys::PrintStackTraceOnErrorSignal(argv[0]);
-  PrettyStackTraceProgram X(argc, argv);
+  llvm::InitLLVM X(argc, argv);
   llvm_shutdown_obj Y;  // Call llvm_shutdown() on exit.
 
   ToolName = argv[0];
diff --git a/llvm/utils/TableGen/TableGen.cpp b/llvm/utils/TableGen/TableGen.cpp
--- a/llvm/utils/TableGen/TableGen.cpp
+++ b/llvm/utils/TableGen/TableGen.cpp
@@ -12,6 +12,7 @@
 
 #include "TableGenBackends.h" // Declares all backends.
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Signals.h"
@@ -266,8 +267,7 @@
 }
 
 int main(int argc, char **argv) {
-  sys::PrintStackTraceOnErrorSignal(argv[0]);
-  PrettyStackTraceProgram X(argc, argv);
+  llvm::InitLLVM X(argc, argv);
   cl::ParseCommandLineOptions(argc, argv);
 
   llvm_shutdown_obj Y;