[llvm-readobj] Teach ELFDumper about symbol versioning.

Differential Revision:	 http://reviews.llvm.org/D13824

llvm-svn: 250575
diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index 3b40d53..cb0c9c6 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -221,6 +221,12 @@
   PrintStackMap("stackmap",
                 cl::desc("Display contents of stackmap section"));
 
+  // -version-info
+  cl::opt<bool>
+      VersionInfo("version-info",
+                  cl::desc("Display ELF version sections (if present)"));
+  cl::alias VersionInfoShort("V", cl::desc("Alias for -version-info"),
+                             cl::aliasopt(VersionInfo));
 } // namespace opts
 
 namespace llvm {
@@ -328,6 +334,8 @@
     Dumper->printHashTable();
   if (opts::GnuHashTable)
     Dumper->printGnuHashTable();
+  if (opts::VersionInfo)
+    Dumper->printVersionInfo();
   if (Obj->getArch() == llvm::Triple::arm && Obj->isELF())
     if (opts::ARMAttributes)
       Dumper->printAttributes();