Add missing ELFObjectWriter::reset() override, like other MC classes.

See detailed discussion at

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140915/235418.html

and r217907, r217948:

 http://llvm.org/viewvc/llvm-project?view=revision&revision=217907
 http://llvm.org/viewvc/llvm-project?view=revision&revision=217948

llvm-svn: 232982

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/lib/MC/ELFObjectWriter.cpp b/llvm/lib/MC/ELFObjectWriter.cpp
index ea3dd450c86..c05241b53f7 100644
--- a/llvm/lib/MC/ELFObjectWriter.cpp
+++ b/llvm/lib/MC/ELFObjectWriter.cpp
@@ -190,6 +190,20 @@ class ELFObjectWriter : public MCObjectWriter {
         : MCObjectWriter(OS, IsLittleEndian), FWriter(IsLittleEndian),
           TargetObjectWriter(MOTW), NeedsGOT(false) {}
 
+    void reset() override {
+      UsedInReloc.clear();
+      WeakrefUsedInReloc.clear();
+      Renames.clear();
+      Relocations.clear();
+      ShStrTabBuilder.clear();
+      StrTabBuilder.clear();
+      FileSymbolData.clear();
+      LocalSymbolData.clear();
+      ExternalSymbolData.clear();
+      UndefinedSymbolData.clear();
+      MCObjectWriter::reset();
+    }
+
     virtual ~ELFObjectWriter();
 
     void WriteWord(uint64_t W) {