[LegacyPM] Remove ThreadSanitizerLegacyPass

[MaskRay]

Summary

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.

[aeubanks]

the title should be "Remove" not "Rename"?

[MaskRay]

rebase

llvm/bindings/go/llvm/InstrumentationBindings.h

 #ifdef __cplusplus
 extern "C" {
 #endif
 
 // FIXME: These bindings shouldn't be Go-specific and should eventually move to
 // 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);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif

llvm/bindings/go/llvm/InstrumentationBindings.cpp

 //===----------------------------------------------------------------------===//
 
 #include "InstrumentationBindings.h"
 #include "llvm-c/Core.h"
 #include "llvm/IR/LegacyPassManager.h"
 #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) {
   std::vector<std::string> ABIListFilesVec;
   for (int i = 0; i != ABIListFilesNum; ++i) {
     ABIListFilesVec.push_back(ABIListFiles[i]);
   }
   unwrap(PM)->add(createDataFlowSanitizerLegacyPassPass(ABIListFilesVec));
 }

llvm/bindings/go/llvm/transforms_instrumentation.go

 
 /*
 #include "InstrumentationBindings.h"
 #include <stdlib.h>
 */
 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 {
     abiliststrs[i] = C.CString(arg)
     defer C.free(unsafe.Pointer(abiliststrs[i]))
   }
   C.LLVMAddDataFlowSanitizerPass(pm.C, C.int(len(abilist)), &abiliststrs[0])
 }

llvm/include/llvm/InitializePasses.h

 void initializeStripNonLineTableDebugLegacyPassPass(PassRegistry &);
 void initializeStripSymbolsPass(PassRegistry&);
 void initializeStructurizeCFGLegacyPassPass(PassRegistry &);
 void initializeTailCallElimPass(PassRegistry&);
 void initializeTailDuplicatePass(PassRegistry&);
 void initializeTargetLibraryInfoWrapperPassPass(PassRegistry&);
 void initializeTargetPassConfigPass(PassRegistry&);
 void initializeTargetTransformInfoWrapperPassPass(PassRegistry&);
-void initializeThreadSanitizerLegacyPassPass(PassRegistry&);
 void initializeTLSVariableHoistLegacyPassPass(PassRegistry &);
 void initializeTwoAddressInstructionPassPass(PassRegistry&);
 void initializeTypeBasedAAWrapperPassPass(PassRegistry&);
 void initializeTypePromotionPass(PassRegistry&);
 void initializeUnifyFunctionExitNodesLegacyPassPass(PassRegistry &);
 void initializeUnifyLoopExitsLegacyPassPass(PassRegistry &);
 void initializeUnpackMachineBundlesPass(PassRegistry&);
 void initializeUnreachableBlockElimLegacyPassPass(PassRegistry&);

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

 #define LLVM_TRANSFORMS_INSTRUMENTATION_THREADSANITIZER_H
 
 #include "llvm/IR/PassManager.h"
 
 namespace llvm {
 class Function;
 class FunctionPass;
 class Module;
-// Insert ThreadSanitizer (race detection) instrumentation
-FunctionPass *createThreadSanitizerLegacyPassPass();
 
 /// A function pass for tsan instrumentation.
 ///
 /// Instruments functions to detect race conditions reads. This function pass
 /// inserts calls to runtime library functions. If the functions aren't declared
 /// yet, the pass inserts the declarations. Otherwise the existing globals are
 struct ThreadSanitizerPass : public PassInfoMixin<ThreadSanitizerPass> {
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &FAM);

llvm/lib/Transforms/Instrumentation/Instrumentation.cpp

 void llvm::initializeInstrumentation(PassRegistry &Registry) {
   initializeMemProfilerLegacyPassPass(Registry);
   initializeModuleMemProfilerLegacyPassPass(Registry);
   initializeBoundsCheckingLegacyPassPass(Registry);
   initializeControlHeightReductionLegacyPassPass(Registry);
   initializeCGProfileLegacyPassPass(Registry);
   initializeInstrOrderFileLegacyPassPass(Registry);
   initializeInstrProfilingLegacyPassPass(Registry);
-  initializeThreadSanitizerLegacyPassPass(Registry);
   initializeModuleSanitizerCoverageLegacyPassPass(Registry);
   initializeDataFlowSanitizerLegacyPassPass(Registry);
 }
 
 /// LLVMInitializeInstrumentation - C binding for
 /// initializeInstrumentation.
 void LLVMInitializeInstrumentation(LLVMPassRegistryRef R) {
   initializeInstrumentation(*unwrap(R));
 }

llvm/lib/Transforms/Instrumentation/ThreadSanitizer.cpp

private:
   FunctionCallee TsanAtomicCAS[kNumberOfAccessSizes];
   FunctionCallee TsanAtomicThreadFence;
   FunctionCallee TsanAtomicSignalFence;
   FunctionCallee TsanVptrUpdate;
   FunctionCallee TsanVptrLoad;
   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=*/{},
       /*InitArgs=*/{},
       // This callback is invoked when the functions are created the first
       // time. Hook them into the global ctors list in that case:
       [&](Function *Ctor, FunctionCallee) { appendToGlobalCtors(M, Ctor, 0); });
 }
 
 }  // namespace
 
 PreservedAnalyses ThreadSanitizerPass::run(Function &F,
                                            FunctionAnalysisManager &FAM) {
   ThreadSanitizer TSan;
   if (TSan.sanitizeFunction(F, FAM.getResult<TargetLibraryAnalysis>(F)))
     return PreservedAnalyses::none();
   return PreservedAnalyses::all();
 }
 
 PreservedAnalyses ModuleThreadSanitizerPass::run(Module &M,
                                                  ModuleAnalysisManager &MAM) {
   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());
 
   IRBuilder<> IRB(M.getContext());
   AttributeList Attr;
   Attr = Attr.addFnAttribute(M.getContext(), Attribute::NoUnwind);
   // Initialize the callbacks.