Imported Upstream version 5.18.0.247

Former-commit-id: 2d6af2e4ed0eda5cbdc2946446ef7718456ad190

external/llvm/lib/Transforms/Utils/SanitizerStats.cpp

@@ -1,108 +0,0 @@
-//===- SanitizerStats.cpp - Sanitizer statistics gathering ----------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Implements code generation for sanitizer statistics gathering.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Transforms/Utils/SanitizerStats.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/GlobalVariable.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Transforms/Utils/ModuleUtils.h"
-
-using namespace llvm;
-
-SanitizerStatReport::SanitizerStatReport(Module *M) : M(M) {
-  StatTy = ArrayType::get(Type::getInt8PtrTy(M->getContext()), 2);
-  EmptyModuleStatsTy = makeModuleStatsTy();
-
-  ModuleStatsGV = new GlobalVariable(*M, EmptyModuleStatsTy, false,
-                                     GlobalValue::InternalLinkage, nullptr);
-}
-
-ArrayType *SanitizerStatReport::makeModuleStatsArrayTy() {
-  return ArrayType::get(StatTy, Inits.size());
-}
-
-StructType *SanitizerStatReport::makeModuleStatsTy() {
-  return StructType::get(M->getContext(), {Type::getInt8PtrTy(M->getContext()),
-                                           Type::getInt32Ty(M->getContext()),
-                                           makeModuleStatsArrayTy()});
-}
-
-void SanitizerStatReport::create(IRBuilder<> &B, SanitizerStatKind SK) {
-  Function *F = B.GetInsertBlock()->getParent();
-  Module *M = F->getParent();
-  PointerType *Int8PtrTy = B.getInt8PtrTy();
-  IntegerType *IntPtrTy = B.getIntPtrTy(M->getDataLayout());
-  ArrayType *StatTy = ArrayType::get(Int8PtrTy, 2);
-
-  Inits.push_back(ConstantArray::get(
-      StatTy,
-      {Constant::getNullValue(Int8PtrTy),
-       ConstantExpr::getIntToPtr(
-           ConstantInt::get(IntPtrTy, uint64_t(SK) << (IntPtrTy->getBitWidth() -
-                                                       kSanitizerStatKindBits)),
-           Int8PtrTy)}));
-
-  FunctionType *StatReportTy =
-      FunctionType::get(B.getVoidTy(), Int8PtrTy, false);
-  Constant *StatReport = M->getOrInsertFunction(
-      "__sanitizer_stat_report", StatReportTy);
-
-  auto InitAddr = ConstantExpr::getGetElementPtr(
-      EmptyModuleStatsTy, ModuleStatsGV,
-      ArrayRef<Constant *>{
-          ConstantInt::get(IntPtrTy, 0), ConstantInt::get(B.getInt32Ty(), 2),
-          ConstantInt::get(IntPtrTy, Inits.size() - 1),
-      });
-  B.CreateCall(StatReport, ConstantExpr::getBitCast(InitAddr, Int8PtrTy));
-}
-
-void SanitizerStatReport::finish() {
-  if (Inits.empty()) {
-    ModuleStatsGV->eraseFromParent();
-    return;
-  }
-
-  PointerType *Int8PtrTy = Type::getInt8PtrTy(M->getContext());
-  IntegerType *Int32Ty = Type::getInt32Ty(M->getContext());
-  Type *VoidTy = Type::getVoidTy(M->getContext());
-
-  // Create a new ModuleStatsGV to replace the old one. We can't just set the
-  // old one's initializer because its type is different.
-  auto NewModuleStatsGV = new GlobalVariable(
-      *M, makeModuleStatsTy(), false, GlobalValue::InternalLinkage,
-      ConstantStruct::getAnon(
-          {Constant::getNullValue(Int8PtrTy),
-           ConstantInt::get(Int32Ty, Inits.size()),
-           ConstantArray::get(makeModuleStatsArrayTy(), Inits)}));
-  ModuleStatsGV->replaceAllUsesWith(
-      ConstantExpr::getBitCast(NewModuleStatsGV, ModuleStatsGV->getType()));
-  ModuleStatsGV->eraseFromParent();
-
-  // Create a global constructor to register NewModuleStatsGV.
-  auto F = Function::Create(FunctionType::get(VoidTy, false),
-                            GlobalValue::InternalLinkage, "", M);
-  auto BB = BasicBlock::Create(M->getContext(), "", F);
-  IRBuilder<> B(BB);
-
-  FunctionType *StatInitTy = FunctionType::get(VoidTy, Int8PtrTy, false);
-  Constant *StatInit = M->getOrInsertFunction(
-      "__sanitizer_stat_init", StatInitTy);
-
-  B.CreateCall(StatInit, ConstantExpr::getBitCast(NewModuleStatsGV, Int8PtrTy));
-  B.CreateRetVoid();
-
-  appendToGlobalCtors(*M, F, 0);
-}