Use the demangler in llvm.

llvm-svn: 280733

lld/ELF/Strings.cpp

@@ -13,12 +13,9 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Config/config.h"
+#include "llvm/Demangle/Demangle.h"
 #include <algorithm>
 
-#ifdef HAVE_CXXABI_H
-#include <cxxabi.h>
-#endif
-
 using namespace llvm;
 using namespace lld;
 using namespace lld::elf;
@@ -86,9 +83,6 @@ bool elf::isValidCIdentifier(StringRef S) {
 
 // Returns the demangled C++ symbol name for Name.
 std::string elf::demangle(StringRef Name) {
-#if !defined(HAVE_CXXABI_H)
-  return Name;
-#else
   // __cxa_demangle can be used to demangle strings other than symbol
   // names which do not necessarily start with "_Z". Name can be
   // either a C or C++ symbol. Don't call __cxa_demangle if the name
@@ -97,12 +91,10 @@ std::string elf::demangle(StringRef Name) {
   if (!Name.startswith("_Z"))
     return Name;
 
-  char *Buf =
-      abi::__cxa_demangle(Name.str().c_str(), nullptr, nullptr, nullptr);
+  char *Buf = itaniumDemangle(Name.str().c_str(), nullptr, nullptr, nullptr);
   if (!Buf)
     return Name;
   std::string S(Buf);
   free(Buf);
   return S;
-#endif
 }

lld/lib/ReaderWriter/MachO/MachOLinkingContext.cpp

@@ -23,6 +23,7 @@
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/Triple.h"
 #include "llvm/Config/config.h"
+#include "llvm/Demangle/Demangle.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Errc.h"
 #include "llvm/Support/Host.h"
@@ -30,10 +31,6 @@
 #include "llvm/Support/Path.h"
 #include <algorithm>
 
-#if defined(HAVE_CXXABI_H)
-#include <cxxabi.h>
-#endif
-
 using lld::mach_o::ArchHandler;
 using lld::mach_o::MachOFile;
 using lld::mach_o::MachODylibFile;
@@ -876,20 +873,18 @@ std::string MachOLinkingContext::demangle(StringRef symbolName) const {
   if (!symbolName.startswith("__Z"))
     return symbolName;
 
-#if defined(HAVE_CXXABI_H)
   SmallString<256> symBuff;
   StringRef nullTermSym = Twine(symbolName).toNullTerminatedStringRef(symBuff);
   // Mach-O has extra leading underscore that needs to be removed.
   const char *cstr = nullTermSym.data() + 1;
   int status;
-  char *demangled = abi::__cxa_demangle(cstr, nullptr, nullptr, &status);
+  char *demangled = llvm::itaniumDemangle(cstr, nullptr, nullptr, &status);
   if (demangled) {
     std::string result(demangled);
     // __cxa_demangle() always uses a malloc'ed buffer to return the result.
     free(demangled);
     return result;
   }
-#endif
 
   return symbolName;
 }