Revert "Demangle: only demangle mangled symbols"

This reverts SVN r286795.  This was incorrect the demangler is expected
to be able to demangle types as well as functions.  This makes the
behaviour of itaniumDemangle similar to __cxa_demangle once more.

llvm-svn: 292573

1 files changed, 1 insertions, 10 deletions

diff --git a/llvm/lib/Demangle/ItaniumDemangle.cpp b/llvm/lib/Demangle/ItaniumDemangle.cpp
index 097b6ca2e08..b078ffee4a5 100644
--- a/llvm/lib/Demangle/ItaniumDemangle.cpp
+++ b/llvm/lib/Demangle/ItaniumDemangle.cpp
@@ -4225,20 +4225,11 @@ char *llvm::itaniumDemangle(const char *mangled_name, char *buf, size_t *n,
       *status = invalid_args;
     return nullptr;
   }
-
-  size_t len = std::strlen(mangled_name);
-  if (len < 2 || strncmp(mangled_name, "_Z", 2)) {
-    if (len < 4 || strncmp(mangled_name, "___Z", 4)) {
-      if (status)
-        *status = invalid_mangled_name;
-      return nullptr;
-    }
-  }
-
   size_t internal_size = buf != nullptr ? *n : 0;
   Db db;
   db.template_param.emplace_back();
   int internal_status = success;
+  size_t len = std::strlen(mangled_name);
   demangle(mangled_name, mangled_name + len, db, internal_status);
   if (internal_status == success && db.fix_forward_references &&
       !db.template_param.empty() && !db.template_param.front().empty()) {