[llvm-profgen] Support COFF binary

llvm/lib/DebugInfo/Symbolize/Symbolize.cpp

@@ -628,13 +628,20 @@ LLVMSymbolizer::getOrCreateModuleInfo(const std::string &ModuleName) {
   ObjectPair Objects = ObjectsOrErr.get();
 
   std::unique_ptr<DIContext> Context;
-  // If this is a COFF object containing PDB info, use a PDBContext to
-  // symbolize. Otherwise, use DWARF.
+  // If this is a COFF object containing PDB info and not containing DWARF
+  // section, use a PDBContext to symbolize. Otherwise, use DWARF.
   if (auto CoffObject = dyn_cast<COFFObjectFile>(Objects.first)) {
     const codeview::DebugInfo *DebugInfo;
     StringRef PDBFileName;
     auto EC = CoffObject->getDebugPDBInfo(DebugInfo, PDBFileName);
-    if (!EC && DebugInfo != nullptr && !PDBFileName.empty()) {
+    // Use DWARF if there're DWARF sections.
+    bool HasDwarf =
+        llvm::any_of(Objects.first->sections(), [](SectionRef Section) -> bool {
+          if (Expected<StringRef> SectionName = Section.getName())
+            return SectionName.get() == ".debug_info";
+          return false;
+        });
+    if (!EC && !HasDwarf && DebugInfo != nullptr && !PDBFileName.empty()) {
       using namespace pdb;
       std::unique_ptr<IPDBSession> Session;
 

llvm/test/tools/llvm-profgen/Inputs/coff-profile.perfscript

@@ -0,0 +1,13 @@
+PERF_RECORD_MMAP2 5752/0: [0x7ff70a1b0000(0x640000) @ 0x1000 00:00 0 0]: r-xp c:\Users\haohaiwe\Desktop\coff-profile.exe
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llvm/test/tools/llvm-profgen/coff-profile.test

@@ -0,0 +1,79 @@
+; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/coff-profile.perfscript --binary=%S/Inputs/coff-profile.exe --output=%t
+; RUN: FileCheck %s --input-file %t
+
+CHECK:      main:31837:0
+CHECK-NEXT:  0: 0
+CHECK-NEXT:  3.1: 0
+CHECK-NEXT:  3.2: 0
+CHECK-NEXT:  8: 0
+CHECK-NEXT:  65501: 0
+CHECK-NEXT:  1: ??$init@HG@MyNameSpace2@@YAXHPEAG@Z:0
+CHECK-NEXT:   1: 0
+CHECK-NEXT:   1.1: 0
+CHECK-NEXT:   1.2: 0
+CHECK-NEXT:   2: 0
+CHECK-NEXT:   65514: 0
+CHECK-NEXT:  4: ?work1@?$MyClass@GH@MyNameSpace1@@QEAAXQEAGH@Z:3193
+CHECK-NEXT:   0: ?work@?$MyClass@GH@MyNameSpace1@@AEAAXQEAGHH@Z:3193
+CHECK-NEXT:    1.1: 31
+CHECK-NEXT:    1.2: 31
+CHECK-NEXT:    2: 31
+CHECK-NEXT:    3: 31
+CHECK-NEXT:    65530: 0
+CHECK-NEXT:  5: ?work2@?$MyClass@GH@MyNameSpace1@@QEAAXQEAGH@Z:28644
+CHECK-NEXT:   0: ?work@?$MyClass@GH@MyNameSpace1@@AEAAXQEAGHH@Z:28644
+CHECK-NEXT:    1.1: 341
+CHECK-NEXT:    1.2: 341
+CHECK-NEXT:    2: 341
+CHECK-NEXT:    3: 341
+CHECK-NEXT:    65530: 0
+CHECK-NEXT:  7: ?print@MyNameSpace2@@YAXPEAGH@Z:0
+CHECK-NEXT:   1: 0
+
+; Original code
+; clang-cl.exe -O2 -gdwarf -gline-tables-only coff-profile.cpp -fuse-ld=lld -Xclang -fdebug-info-for-profiling -link -debug:dwarf
+
+#include <stdio.h>
+
+namespace MyNameSpace1 {
+
+template <typename T1, typename T2> class MyClass {
+  void work(T1 map[], T2 n, T2 m) {
+    for (int i = 1; i < n; i++) {
+      map[i] = map[i - 1] * map[i - 1];
+      map[i] += (i * map[i - 1]) / m + i % m;
+    }
+  }
+
+public:
+  void work1(T1 map[], T2 n) { work(map, n, 7); }
+  void work2(T1 map[], T2 n) { work(map, n, 3); }
+};
+
+} // namespace MyNameSpace1
+
+namespace MyNameSpace2 {
+
+template <typename T1, typename T2> void init(T1 c, T2 *p) {
+  for (int i = 0; i < c * 1000000; i++) {
+    p[i] = i / 3 + (i * i) % 3;
+  }
+}
+
+void print(unsigned short *p, int i) {
+  printf("%d %d %d\n", p[i * i * 100], p[i * i * 100 + 1], p[i * i * 100 + 2]);
+}
+
+} // namespace MyNameSpace2
+
+unsigned short M[3000000];
+int main(int argc, char *argv[]) {
+  MyNameSpace2::init(argc, M);
+  MyNameSpace1::MyClass<unsigned short, int> Obj;
+  for (int i = 0; i <= argc * 10; i++) {
+    Obj.work1(&M[argc], argc * 100000);
+    Obj.work2(&M[argc * argc], argc * 1000000);
+  }
+  MyNameSpace2::print(M, argc);
+  return 0;
+}

llvm/tools/llvm-profgen/PerfReader.cpp

@@ -408,9 +408,22 @@ PerfScriptReader::convertPerfDataToTrace(ProfiledBinary *Binary,
           PerfContent::UnknownContent};
 }
 
+static StringRef filename(StringRef Path, bool UseBackSlash) {
+  llvm::sys::path::Style PathStyle =
+      UseBackSlash ? llvm::sys::path::Style::windows_backslash
+                   : llvm::sys::path::Style::native;
+  StringRef FileName = llvm::sys::path::filename(Path, PathStyle);
+
+  // In case this file use \r\n as newline.
+  if (UseBackSlash && FileName.back() == '\r')
+    return FileName.drop_back();
+
+  return FileName;
+}
+
 void PerfScriptReader::updateBinaryAddress(const MMapEvent &Event) {
   // Drop the event which doesn't belong to user-provided binary
-  StringRef BinaryName = llvm::sys::path::filename(Event.BinaryPath);
+  StringRef BinaryName = filename(Event.BinaryPath, Binary->isCOFF());
   if (Binary->getName() != BinaryName)
     return;
 
@@ -975,7 +988,7 @@ bool PerfScriptReader::extractMMap2EventForBinary(ProfiledBinary *Binary,
            << format("0x%" PRIx64 ":", MMap.Address) << " \n";
   }
 
-  StringRef BinaryName = llvm::sys::path::filename(MMap.BinaryPath);
+  StringRef BinaryName = filename(MMap.BinaryPath, Binary->isCOFF());
   return Binary->getName() == BinaryName;
 }