[NFC][InstrProf]Generalize getParsedIRPGOFuncName to getParsedIRPGOName (#81054)

- Function getParsedIRPGOFuncName splits name by delimiter. The `[filename;]mangled-name` format could be generalized for non-function global values (e.g., vtables for type profiling). So rename the
function.
- Use kGlobalIdentifierDelimiter rather than semicolon directly for defragmentation.

Author: mingmingl-llvm

llvm/include/llvm/ProfileData/InstrProf.h

@@ -195,7 +195,7 @@ std::string getIRPGOFuncName(const Function &F, bool InLTO = false);
 
 /// \return the filename and the function name parsed from the output of
 /// \c getIRPGOFuncName()
-std::pair<StringRef, StringRef> getParsedIRPGOFuncName(StringRef IRPGOFuncName);
+std::pair<StringRef, StringRef> getParsedIRPGOName(StringRef IRPGOName);
 
 /// Return the name of the global variable used to store a function
 /// name in PGO instrumentation. \c FuncName is the IRPGO function name

llvm/lib/ProfileData/InstrProf.cpp

@@ -378,13 +378,12 @@ std::string getPGOFuncName(const Function &F, bool InLTO, uint64_t Version) {
   return getPGOFuncName(F.getName(), GlobalValue::ExternalLinkage, "");
 }
 
-// See getIRPGOFuncName() for a discription of the format.
-std::pair<StringRef, StringRef>
-getParsedIRPGOFuncName(StringRef IRPGOFuncName) {
-  auto [FileName, FuncName] = IRPGOFuncName.split(';');
-  if (FuncName.empty())
-    return std::make_pair(StringRef(), IRPGOFuncName);
-  return std::make_pair(FileName, FuncName);
+// See getIRPGOObjectName() for a discription of the format.
+std::pair<StringRef, StringRef> getParsedIRPGOName(StringRef IRPGOName) {
+  auto [FileName, MangledName] = IRPGOName.split(kGlobalIdentifierDelimiter);
+  if (MangledName.empty())
+    return std::make_pair(StringRef(), IRPGOName);
+  return std::make_pair(FileName, MangledName);
 }
 
 StringRef getFuncNameWithoutPrefix(StringRef PGOFuncName, StringRef FileName) {

llvm/tools/llvm-profdata/llvm-profdata.cpp

@@ -3231,7 +3231,7 @@ static int order_main(int argc, const char *argv[]) {
         "-order_file.\n";
   for (auto &N : Nodes) {
     auto [Filename, ParsedFuncName] =
-        getParsedIRPGOFuncName(Reader->getSymtab().getFuncOrVarName(N.Id));
+        getParsedIRPGOName(Reader->getSymtab().getFuncOrVarName(N.Id));
     if (!Filename.empty())
       OS << "# " << Filename << "\n";
     OS << ParsedFuncName << "\n";

llvm/unittests/ProfileData/InstrProfTest.cpp

@@ -561,8 +561,7 @@ TEST_F(InstrProfTest, test_irpgo_function_name) {
     auto IRPGOFuncName = getIRPGOFuncName(*F);
     EXPECT_EQ(IRPGOFuncName, ExpectedIRPGOFuncName);
 
-    auto [Filename, ParsedIRPGOFuncName] =
-        getParsedIRPGOFuncName(IRPGOFuncName);
+    auto [Filename, ParsedIRPGOFuncName] = getParsedIRPGOName(IRPGOFuncName);
     StringRef ExpectedParsedIRPGOFuncName = IRPGOFuncName;
     if (ExpectedParsedIRPGOFuncName.consume_front("MyModule.cpp;")) {
       EXPECT_EQ(Filename, "MyModule.cpp");
@@ -1279,8 +1278,7 @@ TEST(SymtabTest, instr_prof_symtab_module_test) {
     auto IRPGOFuncName =
         ProfSymtab.getFuncOrVarName(IndexedInstrProf::ComputeHash(IRPGOName));
     EXPECT_EQ(StringRef(IRPGOName), IRPGOFuncName);
-    EXPECT_EQ(StringRef(Funcs[I]),
-              getParsedIRPGOFuncName(IRPGOFuncName).second);
+    EXPECT_EQ(StringRef(Funcs[I]), getParsedIRPGOName(IRPGOFuncName).second);
     // Ensure we can still read this old record name.
     std::string PGOName = getPGOFuncName(*F);
     auto PGOFuncName =