Record in a MCSymbolELF if it has been used in a relocation.

No functionality change, just saves an on the side map.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238979 91177308-0d34-0410-b5e6-96231b3b80d8

lib/MC/MCSymbolELF.cpp

@@ -77,4 +77,13 @@ unsigned MCSymbolELF::getOther() const {
   unsigned Other = (getFlags() & (0x3f << ELF_STO_Shift)) >> ELF_STO_Shift;
   return Other;
 }
+
+void MCSymbolELF::setUsedInReloc() const {
+  UsedInReloc = true;
+}
+
+bool MCSymbolELF::isUsedInReloc() const {
+  return UsedInReloc;
+}
+
 }