[ASan] Process functions in Asan module pass.

[kstoimenov]

Summary

Re-land of D112732 with fixes.

clang/lib/CodeGen/BackendUtil.cpp

auto ASanPass = [&](SanitizerMask Mask, bool CompileKernel) {
         bool UseAfterScope = CodeGenOpts.SanitizeAddressUseAfterScope;
         bool UseGlobalGC = asanUseGlobalsGC(TargetTriple, CodeGenOpts);
         bool UseOdrIndicator = CodeGenOpts.SanitizeAddressUseOdrIndicator;
         llvm::AsanDtorKind DestructorKind =
             CodeGenOpts.getSanitizeAddressDtor();
         llvm::AsanDetectStackUseAfterReturnMode UseAfterReturn =
             CodeGenOpts.getSanitizeAddressUseAfterReturn();
         MPM.addPass(RequireAnalysisPass<ASanGlobalsMetadataAnalysis, Module>());
-        MPM.addPass(ModuleAddressSanitizerPass(CompileKernel, Recover,
-                                               UseGlobalGC, UseOdrIndicator,
-                                               DestructorKind));
-        MPM.addPass(createModuleToFunctionPassAdaptor(AddressSanitizerPass(
-            {CompileKernel, Recover, UseAfterScope, UseAfterReturn})));
+        MPM.addPass(ModuleAddressSanitizerPass(
+            CompileKernel, Recover, UseGlobalGC, ModuleUseAfterScope,
+            UseOdrIndicator, DestructorKind, UseAfterScope, UseAfterReturn));
       }
     };
     ASanPass(SanitizerKind::Address, false);
     ASanPass(SanitizerKind::KernelAddress, true);
 
     auto HWASanPass = [&](SanitizerMask Mask, bool CompileKernel) {
       if (LangOpts.Sanitize.has(Mask)) {
         bool Recover = CodeGenOpts.SanitizeRecover.has(Mask);

llvm/include/llvm/Transforms/Instrumentation/AddressSanitizer.h

 /// This adds 'asan.module_ctor' to 'llvm.global_ctors'. This pass may also
 /// run intependently of the function address sanitizer.
 class ModuleAddressSanitizerPass
     : public PassInfoMixin<ModuleAddressSanitizerPass> {
 public:
   explicit ModuleAddressSanitizerPass(
       bool CompileKernel = false, bool Recover = false, bool UseGlobalGC = true,
       bool UseOdrIndicator = false,
-      AsanDtorKind DestructorKind = AsanDtorKind::Global);
+      AsanDtorKind DestructorKind = AsanDtorKind::Global,
+      bool UseAfterScope = false,
+      AsanDetectStackUseAfterReturnMode UseAfterReturn =
+          AsanDetectStackUseAfterReturnMode::Runtime);
   PreservedAnalyses run(Module &M, ModuleAnalysisManager &AM);
   void printPipeline(raw_ostream &OS,
                      function_ref<StringRef(StringRef)> MapClassName2PassName);
   static bool isRequired() { return true; }
 
 private:
   bool CompileKernel;
   bool Recover;
   bool UseGlobalGC;
   bool UseOdrIndicator;
   AsanDtorKind DestructorKind;
+  bool UseAfterScope;
+  AsanDetectStackUseAfterReturnMode UseAfterReturn;
 };
 
 // Insert AddressSanitizer (address sanity checking) instrumentation
 FunctionPass *createAddressSanitizerFunctionPass(
     bool CompileKernel = false, bool Recover = false,
     bool UseAfterScope = false,
     AsanDetectStackUseAfterReturnMode UseAfterReturn =
         AsanDetectStackUseAfterReturnMode::Runtime);

llvm/lib/Passes/PassRegistry.def

MODULE_PASS_WITH_PARAMS("loop-extract",
                         "single")
 MODULE_PASS_WITH_PARAMS("hwasan",
                         "HWAddressSanitizerPass",
                         [](HWAddressSanitizerOptions Opts) {
                           return HWAddressSanitizerPass(Opts);
                         },
                         parseHWASanPassOptions,
                         "kernel;recover")
-MODULE_PASS_WITH_PARAMS("asan-module",
+MODULE_PASS_WITH_PARAMS("asan",
                         "ModuleAddressSanitizerPass",
                         [](bool CompileKernel) {
                           return ModuleAddressSanitizerPass(CompileKernel,
                                                             false, true,
                                                             false);
                         },
                         parseModuleAddressSanitizerPassOptions,
                         "kernel")
FUNCTION_PASS_WITH_PARAMS("loop-unroll",
                            },
                           parseLoopUnrollOptions,
                           "O0;O1;O2;O3;full-unroll-max=N;"
                           "no-partial;partial;"
                           "no-peeling;peeling;"
                           "no-profile-peeling;profile-peeling;"
                           "no-runtime;runtime;"
                           "no-upperbound;upperbound")
-FUNCTION_PASS_WITH_PARAMS("asan",
-                          "AddressSanitizerPass",
-                           [](AddressSanitizerOptions Opts) {
-                             return AddressSanitizerPass(Opts);
-                           },
-                          parseASanPassOptions,
-                          "kernel")
 FUNCTION_PASS_WITH_PARAMS("msan",
                           "MemorySanitizerPass",
                            [](MemorySanitizerOptions Opts) {
                              return MemorySanitizerPass(Opts);
                            },
                           parseMSanPassOptions,
                           "recover;kernel;track-origins=N")
 FUNCTION_PASS_WITH_PARAMS("simplifycfg",

llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp

void ModuleAddressSanitizerPass::printPipeline(
   OS << "<";
   if (CompileKernel)
     OS << "kernel";
   OS << ">";
 }
 
 ModuleAddressSanitizerPass::ModuleAddressSanitizerPass(
     bool CompileKernel, bool Recover, bool UseGlobalGC, bool UseOdrIndicator,
-    AsanDtorKind DestructorKind)
+    AsanDtorKind DestructorKind, bool UseAfterScope,
+    AsanDetectStackUseAfterReturnMode UseAfterReturn)
     : CompileKernel(CompileKernel), Recover(Recover), UseGlobalGC(UseGlobalGC),
-      UseOdrIndicator(UseOdrIndicator), DestructorKind(DestructorKind) {}
+      UseOdrIndicator(UseOdrIndicator), DestructorKind(DestructorKind),
+      UseAfterScope(UseAfterScope), UseAfterReturn(UseAfterReturn) {}
 
 PreservedAnalyses ModuleAddressSanitizerPass::run(Module &M,
-                                                  AnalysisManager<Module> &AM) {
-  GlobalsMetadata &GlobalsMD = AM.getResult<ASanGlobalsMetadataAnalysis>(M);
-  ModuleAddressSanitizer Sanitizer(M, &GlobalsMD, CompileKernel, Recover,
+                                                  ModuleAnalysisManager &MAM) {
+  GlobalsMetadata &GlobalsMD = MAM.getResult<ASanGlobalsMetadataAnalysis>(M);
+  ModuleAddressSanitizer ModuleSanitizer(M, &GlobalsMD, CompileKernel, Recover,
                                          UseGlobalGC, UseOdrIndicator,
                                          DestructorKind);
-  if (Sanitizer.instrumentModule(M))
+  bool Modified = false;
+  auto &FAM = MAM.getResult<FunctionAnalysisManagerModuleProxy>(M).getManager();
+  for (Function &F : M) {
+    AddressSanitizer FunctionSanitizer(M, &GlobalsMD, CompileKernel, Recover,
+                                       UseAfterScope, UseAfterReturn);
+    const TargetLibraryInfo &TLI = FAM.getResult<TargetLibraryAnalysis>(F);
+    Modified |= FunctionSanitizer.instrumentFunction(F, &TLI);
+  }
+  Modified |= ModuleSanitizer.instrumentModule(M);
+  if (Modified)
     return PreservedAnalyses::none();
   return PreservedAnalyses::all();
 }
 
 INITIALIZE_PASS(ASanGlobalsMetadataWrapperPass, "asan-globals-md",
                 "Read metadata to mark which globals should be instrumented "
                 "when running ASan.",
                 false, true)
bool ShouldInstrument =
       ClDebugMin < 0 || ClDebugMax < 0 ||
       (Instrumented >= ClDebugMin && Instrumented <= ClDebugMax);
   Instrumented++;
   return !ShouldInstrument;
 }
 
 bool AddressSanitizer::instrumentFunction(Function &F,
                                           const TargetLibraryInfo *TLI) {
+  if (F.empty())
+    return false;
   if (F.getLinkage() == GlobalValue::AvailableExternallyLinkage) return false;
   if (!ClDebugFunc.empty() && ClDebugFunc == F.getName()) return false;
   if (F.getName().startswith("__asan_")) return false;
 
   bool FunctionModified = false;
 
   // If needed, insert __asan_init before checking for SanitizeAddress attr.
   // This function needs to be called even if the function body is not

llvm/test/Instrumentation/SanitizerCoverage/tracing-comdat.ll

 ; Test that the coverage guards have proper comdat
 ; Make sure asan does not instrument __sancov_gen_
 
 ; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard  -S  | FileCheck %s
-; RUN: opt < %s -passes='module(require<asan-globals-md>,sancov-module,asan-module),function(asan)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard  -S  | FileCheck %s
+; RUN: opt < %s -passes='module(require<asan-globals-md>,sancov-module,asan)' -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard  -S  | FileCheck %s
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 $Foo = comdat any
 ; Function Attrs: uwtable
 define linkonce_odr void @Foo() comdat {
 entry:
   ret void
 }
 
 define linkonce_odr void @Bar() {
 entry:
   ret void
 }
 
 ; CHECK: @__sancov_gen_ = private global [1 x i32] zeroinitializer, section "__sancov_guards", comdat($Foo)
 ; CHECK: @__sancov_gen_.1 = private global [1 x i32] zeroinitializer, section "__sancov_guards"

llvm/test/Other/new-pm-print-pipeline.ll

 ; CHECK-12: function(early-cse<>,early-cse<memssa>)
 
 ; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='msan-module,function(msan,msan<>,msan<recover;kernel;track-origins=5>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-13
 ; CHECK-13: msan-module,function(msan<track-origins=0>,msan<track-origins=0>,msan<recover;kernel;track-origins=5>)
 
 ; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='module(hwasan<>,hwasan<kernel;recover>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-14
 ; CHECK-14: hwasan<>,hwasan<kernel;recover>
 
-; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='function(asan<>,asan<kernel>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-15
-; CHECK-15: function(asan<>,asan<kernel>)
+; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='module(asan<>,asan<kernel>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-15
+; CHECK-15: asan<>,asan<kernel>
 
 ; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='module(loop-extract<>,loop-extract<single>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-16
 ; CHECK-16: loop-extract<>,loop-extract<single>
 
 ; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='function(print<stack-lifetime><may>,print<stack-lifetime><must>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-17
 ; CHECK-17: function(print<stack-lifetime><may>,print<stack-lifetime><must>)
 
 ; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='function(simplifycfg<bonus-inst-threshold=5;forward-switch-cond;switch-to-lookup;keep-loops;hoist-common-insts;sink-common-insts>,simplifycfg<bonus-inst-threshold=7;no-forward-switch-cond;no-switch-to-lookup;no-keep-loops;no-hoist-common-insts;no-sink-common-insts>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-18

llvm/tools/opt/NewPMDriver.cpp

PB.registerPipelineParsingCallback(
           MPM.addPass(NewPMCheckDebugifyPass());
           return true;
         }
         return false;
       });
   PB.registerPipelineParsingCallback(
       [](StringRef Name, ModulePassManager &MPM,
          ArrayRef<PassBuilder::PipelineElement>) {
-        AddressSanitizerOptions Opts;
         if (Name == "asan-pipeline") {
           MPM.addPass(
               RequireAnalysisPass<ASanGlobalsMetadataAnalysis, Module>());
-          MPM.addPass(
-              createModuleToFunctionPassAdaptor(AddressSanitizerPass(Opts)));
           MPM.addPass(ModuleAddressSanitizerPass());
           return true;
         } else if (Name == "asan-function-pipeline") {
+          // FIXME: now this is the same as asan-pipeline and can me removed.
           MPM.addPass(
               RequireAnalysisPass<ASanGlobalsMetadataAnalysis, Module>());
-          MPM.addPass(
-              createModuleToFunctionPassAdaptor(AddressSanitizerPass(Opts)));
+          MPM.addPass(ModuleAddressSanitizerPass());
           return true;
         }
         return false;
       });
 
 #define HANDLE_EXTENSION(Ext)                                                  \
   get##Ext##PluginInfo().RegisterPassBuilderCallbacks(PB);
 #include "llvm/Support/Extension.def"