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📄 ABIInfo.h(5.01 KB)
📄 Address.h(3.28 KB)
📄 BackendUtil.cpp(67.92 KB)
📄 CGAtomic.cpp(85.95 KB)
📄 CGBlocks.cpp(111.14 KB)
📄 CGBlocks.h(8.94 KB)
📄 CGBuilder.h(13.78 KB)
📄 CGBuiltin.cpp(695.8 KB)
📄 CGCUDANV.cpp(35.16 KB)
📄 CGCUDARuntime.cpp(1.53 KB)
📄 CGCUDARuntime.h(3.4 KB)
📄 CGCXX.cpp(11.8 KB)
📄 CGCXXABI.cpp(12.47 KB)
📄 CGCXXABI.h(27.9 KB)
📄 CGCall.cpp(197.3 KB)
📄 CGCall.h(11.62 KB)
📄 CGClass.cpp(113.54 KB)
📄 CGCleanup.cpp(46.97 KB)
📄 CGCleanup.h(19.28 KB)
📄 CGCoroutine.cpp(27.82 KB)
📄 CGDebugInfo.cpp(191.42 KB)
📄 CGDebugInfo.h(34.73 KB)
📄 CGDecl.cpp(97.98 KB)
📄 CGDeclCXX.cpp(34.73 KB)
📄 CGException.cpp(80.38 KB)
📄 CGExpr.cpp(209.78 KB)
📄 CGExprAgg.cpp(77.04 KB)
📄 CGExprCXX.cpp(90.39 KB)
📄 CGExprComplex.cpp(44.9 KB)
📄 CGExprConstant.cpp(86.17 KB)
📄 CGExprScalar.cpp(196.29 KB)
📄 CGGPUBuiltin.cpp(6.17 KB)
📄 CGLoopInfo.cpp(29.17 KB)
📄 CGLoopInfo.h(10.5 KB)
📄 CGNonTrivialStruct.cpp(41.4 KB)
📄 CGObjC.cpp(142.79 KB)
📄 CGObjCGNU.cpp(168.38 KB)
📄 CGObjCMac.cpp(304.84 KB)
📄 CGObjCRuntime.cpp(14.68 KB)
📄 CGObjCRuntime.h(14.81 KB)
📄 CGOpenCLRuntime.cpp(7.08 KB)
📄 CGOpenCLRuntime.h(3.44 KB)
📄 CGOpenMPRuntime.cpp(501.86 KB)
📄 CGOpenMPRuntime.h(111.87 KB)
📄 CGOpenMPRuntimeNVPTX.cpp(215.42 KB)
📄 CGOpenMPRuntimeNVPTX.h(22.59 KB)
📄 CGRecordLayout.h(7.84 KB)
📄 CGRecordLayoutBuilder.cpp(38.24 KB)
📄 CGStmt.cpp(92.92 KB)
📄 CGStmtOpenMP.cpp(278.04 KB)
📄 CGVTT.cpp(6.81 KB)
📄 CGVTables.cpp(55.02 KB)
📄 CGVTables.h(6.38 KB)
📄 CGValue.h(21.24 KB)
📄 CodeGenABITypes.cpp(5 KB)
📄 CodeGenAction.cpp(46.2 KB)
📄 CodeGenFunction.cpp(95.34 KB)
📄 CodeGenFunction.h(200.94 KB)
📄 CodeGenModule.cpp(228.13 KB)
📄 CodeGenModule.h(60.91 KB)
📄 CodeGenPGO.cpp(36.17 KB)
📄 CodeGenPGO.h(4.36 KB)
📄 CodeGenTBAA.cpp(16.92 KB)
📄 CodeGenTBAA.h(9.19 KB)
📄 CodeGenTypeCache.h(3.28 KB)
📄 CodeGenTypes.cpp(32.35 KB)
📄 CodeGenTypes.h(13.42 KB)
📄 ConstantEmitter.h(6.65 KB)
📄 ConstantInitBuilder.cpp(10.29 KB)
📄 CoverageMappingGen.cpp(54.64 KB)
📄 CoverageMappingGen.h(4.04 KB)
📄 EHScopeStack.h(14.38 KB)
📄 ItaniumCXXABI.cpp(176.66 KB)
📄 MacroPPCallbacks.cpp(6.41 KB)
📄 MacroPPCallbacks.h(4.54 KB)
📄 MicrosoftCXXABI.cpp(175.41 KB)
📄 ModuleBuilder.cpp(11.79 KB)
📄 ObjectFilePCHContainerOperations.cpp(12.93 KB)
📄 PatternInit.cpp(4.1 KB)
📄 PatternInit.h(722 B)
📄 SanitizerMetadata.cpp(4.21 KB)
📄 SanitizerMetadata.h(1.63 KB)
📄 SwiftCallingConv.cpp(29.76 KB)
📄 TargetInfo.cpp(403.11 KB)
📄 TargetInfo.h(15.43 KB)
📄 VarBypassDetector.cpp(5.1 KB)
📄 VarBypassDetector.h(2.29 KB)

Editing: SanitizerMetadata.cpp

//===--- SanitizerMetadata.cpp - Blacklist for sanitizers -----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Class which emits metadata consumed by sanitizer instrumentation passes.
//
//===----------------------------------------------------------------------===//
#include "SanitizerMetadata.h"
#include "CodeGenModule.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Type.h"
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/IR/Constants.h"

using namespace clang;
using namespace CodeGen;

SanitizerMetadata::SanitizerMetadata(CodeGenModule &CGM) : CGM(CGM) {}

static bool isAsanHwasanOrMemTag(const SanitizerSet& SS) {
  return SS.hasOneOf(SanitizerKind::Address | SanitizerKind::KernelAddress |
                     SanitizerKind::HWAddress | SanitizerKind::KernelHWAddress |
                     SanitizerKind::MemTag);
}

void SanitizerMetadata::reportGlobalToASan(llvm::GlobalVariable *GV,
                                           SourceLocation Loc, StringRef Name,
                                           QualType Ty, bool IsDynInit,
                                           bool IsExcluded) {
  if (!isAsanHwasanOrMemTag(CGM.getLangOpts().Sanitize))
    return;
  IsDynInit &= !CGM.isInSanitizerBlacklist(GV, Loc, Ty, "init");
  IsExcluded |= CGM.isInSanitizerBlacklist(GV, Loc, Ty);

llvm::Metadata *LocDescr = nullptr;
  llvm::Metadata *GlobalName = nullptr;
  llvm::LLVMContext &VMContext = CGM.getLLVMContext();
  if (!IsExcluded) {
    // Don't generate source location and global name if it is blacklisted -
    // it won't be instrumented anyway.
    LocDescr = getLocationMetadata(Loc);
    if (!Name.empty())
      GlobalName = llvm::MDString::get(VMContext, Name);
  }

llvm::Metadata *GlobalMetadata[] = {
      llvm::ConstantAsMetadata::get(GV), LocDescr, GlobalName,
      llvm::ConstantAsMetadata::get(
          llvm::ConstantInt::get(llvm::Type::getInt1Ty(VMContext), IsDynInit)),
      llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
          llvm::Type::getInt1Ty(VMContext), IsExcluded))};

llvm::MDNode *ThisGlobal = llvm::MDNode::get(VMContext, GlobalMetadata);
  llvm::NamedMDNode *AsanGlobals =
      CGM.getModule().getOrInsertNamedMetadata("llvm.asan.globals");
  AsanGlobals->addOperand(ThisGlobal);
}

void SanitizerMetadata::reportGlobalToASan(llvm::GlobalVariable *GV,
                                           const VarDecl &D, bool IsDynInit) {
  if (!isAsanHwasanOrMemTag(CGM.getLangOpts().Sanitize))
    return;
  std::string QualName;
  llvm::raw_string_ostream OS(QualName);
  D.printQualifiedName(OS);

bool IsExcluded = false;
  for (auto Attr : D.specific_attrs<NoSanitizeAttr>())
    if (Attr->getMask() & SanitizerKind::Address)
      IsExcluded = true;
  reportGlobalToASan(GV, D.getLocation(), OS.str(), D.getType(), IsDynInit,
                     IsExcluded);
}

void SanitizerMetadata::disableSanitizerForGlobal(llvm::GlobalVariable *GV) {
  // For now, just make sure the global is not modified by the ASan
  // instrumentation.
  if (isAsanHwasanOrMemTag(CGM.getLangOpts().Sanitize))
    reportGlobalToASan(GV, SourceLocation(), "", QualType(), false, true);
}

void SanitizerMetadata::disableSanitizerForInstruction(llvm::Instruction *I) {
  I->setMetadata(CGM.getModule().getMDKindID("nosanitize"),
                 llvm::MDNode::get(CGM.getLLVMContext(), None));
}

llvm::MDNode *SanitizerMetadata::getLocationMetadata(SourceLocation Loc) {
  PresumedLoc PLoc = CGM.getContext().getSourceManager().getPresumedLoc(Loc);
  if (!PLoc.isValid())
    return nullptr;
  llvm::LLVMContext &VMContext = CGM.getLLVMContext();
  llvm::Metadata *LocMetadata[] = {
      llvm::MDString::get(VMContext, PLoc.getFilename()),
      llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
          llvm::Type::getInt32Ty(VMContext), PLoc.getLine())),
      llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
          llvm::Type::getInt32Ty(VMContext), PLoc.getColumn())),
  };
  return llvm::MDNode::get(VMContext, LocMetadata);
}

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Editing: SanitizerMetadata.cpp

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