Move IsUsedInReloc from MCSymbolELF to MCSymbol.

There is a free bit is MCSymbol and MachO needs the same information.

llvm-svn: 239933
diff --git a/llvm/lib/MC/MCAssembler.cpp b/llvm/lib/MC/MCAssembler.cpp
index 55f5009..df41671 100644
--- a/llvm/lib/MC/MCAssembler.cpp
+++ b/llvm/lib/MC/MCAssembler.cpp
@@ -345,16 +345,6 @@
   return true;
 }
 
-void MCAssembler::addLocalUsedInReloc(const MCSymbol &Sym) {
-  assert(Sym.isTemporary());
-  LocalsUsedInReloc.insert(&Sym);
-}
-
-bool MCAssembler::isLocalUsedInReloc(const MCSymbol &Sym) const {
-  assert(Sym.isTemporary());
-  return LocalsUsedInReloc.count(&Sym);
-}
-
 bool MCAssembler::isSymbolLinkerVisible(const MCSymbol &Symbol) const {
   // Non-temporary labels should always be visible to the linker.
   if (!Symbol.isTemporary())
@@ -364,7 +354,7 @@
   if (!Symbol.isInSection())
     return false;
 
-  if (isLocalUsedInReloc(Symbol))
+  if (Symbol.isUsedInReloc())
     return true;
 
   return false;