[LegacyPM] Remove ThreadSanitizerLegacyPass

Using the legacy PM for the optimization pipeline was deprecated in 13.0.0.
Following recent changes to remove non-core features of the legacy
PM/optimization pipeline, remove ThreadSanitizerLegacyPass.

Reviewed By: #sanitizers, vitalybuka

Differential Revision: https://reviews.llvm.org/D124209

llvm/bindings/go/llvm/InstrumentationBindings.cpp

@@ -16,15 +16,9 @@
 #include "llvm/IR/Module.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Instrumentation.h"
-#include "llvm/Transforms/Instrumentation/MemorySanitizer.h"
-#include "llvm/Transforms/Instrumentation/ThreadSanitizer.h"
 
 using namespace llvm;
 
-void LLVMAddThreadSanitizerPass(LLVMPassManagerRef PM) {
-  unwrap(PM)->add(createThreadSanitizerLegacyPassPass());
-}
-
 void LLVMAddDataFlowSanitizerPass(LLVMPassManagerRef PM,
                                   int ABIListFilesNum,
                                   const char **ABIListFiles) {

llvm/bindings/go/llvm/InstrumentationBindings.h

@@ -23,7 +23,6 @@ extern "C" {
 // a (somewhat) less stable collection of C APIs for use in creating bindings of
 // LLVM in other languages.
 
-void LLVMAddThreadSanitizerPass(LLVMPassManagerRef PM);
 void LLVMAddDataFlowSanitizerPass(LLVMPassManagerRef PM, int ABIListFilesNum,
                                   const char **ABIListFiles);
 

llvm/bindings/go/llvm/transforms_instrumentation.go

@@ -19,10 +19,6 @@ package llvm
 import "C"
 import "unsafe"
 
-func (pm PassManager) AddThreadSanitizerPass() {
-	C.LLVMAddThreadSanitizerPass(pm.C)
-}
-
 func (pm PassManager) AddDataFlowSanitizerPass(abilist []string) {
 	abiliststrs := make([]*C.char, len(abilist))
 	for i, arg := range abilist {

llvm/include/llvm/InitializePasses.h

@@ -432,7 +432,6 @@ void initializeTailDuplicatePass(PassRegistry&);
 void initializeTargetLibraryInfoWrapperPassPass(PassRegistry&);
 void initializeTargetPassConfigPass(PassRegistry&);
 void initializeTargetTransformInfoWrapperPassPass(PassRegistry&);
-void initializeThreadSanitizerLegacyPassPass(PassRegistry&);
 void initializeTLSVariableHoistLegacyPassPass(PassRegistry &);
 void initializeTwoAddressInstructionPassPass(PassRegistry&);
 void initializeTypeBasedAAWrapperPassPass(PassRegistry&);

llvm/include/llvm/Transforms/Instrumentation/ThreadSanitizer.h

@@ -19,8 +19,6 @@ namespace llvm {
 class Function;
 class FunctionPass;
 class Module;
-// Insert ThreadSanitizer (race detection) instrumentation
-FunctionPass *createThreadSanitizerLegacyPassPass();
 
 /// A function pass for tsan instrumentation.
 ///

llvm/lib/Transforms/Instrumentation/Instrumentation.cpp

@@ -98,7 +98,6 @@ void llvm::initializeInstrumentation(PassRegistry &Registry) {
   initializeCGProfileLegacyPassPass(Registry);
   initializeInstrOrderFileLegacyPassPass(Registry);
   initializeInstrProfilingLegacyPassPass(Registry);
-  initializeThreadSanitizerLegacyPassPass(Registry);
   initializeModuleSanitizerCoverageLegacyPassPass(Registry);
   initializeDataFlowSanitizerLegacyPassPass(Registry);
 }

llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp

@@ -173,19 +173,6 @@ private:
   FunctionCallee MemmoveFn, MemcpyFn, MemsetFn;
 };
 
-struct ThreadSanitizerLegacyPass : FunctionPass {
-  ThreadSanitizerLegacyPass() : FunctionPass(ID) {
-    initializeThreadSanitizerLegacyPassPass(*PassRegistry::getPassRegistry());
-  }
-  StringRef getPassName() const override;
-  void getAnalysisUsage(AnalysisUsage &AU) const override;
-  bool runOnFunction(Function &F) override;
-  bool doInitialization(Module &M) override;
-  static char ID; // Pass identification, replacement for typeid.
-private:
-  Optional<ThreadSanitizer> TSan;
-};
-
 void insertModuleCtor(Module &M) {
   getOrCreateSanitizerCtorAndInitFunctions(
       M, kTsanModuleCtorName, kTsanInitName, /*InitArgTypes=*/{},
@@ -210,38 +197,6 @@ PreservedAnalyses ModuleThreadSanitizerPass::run(Module &M,
   insertModuleCtor(M);
   return PreservedAnalyses::none();
 }
-
-char ThreadSanitizerLegacyPass::ID = 0;
-INITIALIZE_PASS_BEGIN(ThreadSanitizerLegacyPass, "tsan",
-                      "ThreadSanitizer: detects data races.", false, false)
-INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_PASS_END(ThreadSanitizerLegacyPass, "tsan",
-                    "ThreadSanitizer: detects data races.", false, false)
-
-StringRef ThreadSanitizerLegacyPass::getPassName() const {
-  return "ThreadSanitizerLegacyPass";
-}
-
-void ThreadSanitizerLegacyPass::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<TargetLibraryInfoWrapperPass>();
-}
-
-bool ThreadSanitizerLegacyPass::doInitialization(Module &M) {
-  insertModuleCtor(M);
-  TSan.emplace();
-  return true;
-}
-
-bool ThreadSanitizerLegacyPass::runOnFunction(Function &F) {
-  auto &TLI = getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(F);
-  TSan->sanitizeFunction(F, TLI);
-  return true;
-}
-
-FunctionPass *llvm::createThreadSanitizerLegacyPassPass() {
-  return new ThreadSanitizerLegacyPass();
-}
-
 void ThreadSanitizer::initialize(Module &M) {
   const DataLayout &DL = M.getDataLayout();
   IntptrTy = DL.getIntPtrType(M.getContext());