add a helper method for creating MCSymbol and MCSymbolRefExpr at
the same time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81984 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCExpr.cpp b/lib/MC/MCExpr.cpp
index c0ecad0..0f3e053 100644
--- a/lib/MC/MCExpr.cpp
+++ b/lib/MC/MCExpr.cpp
@@ -133,6 +133,12 @@
   return new (Ctx) MCSymbolRefExpr(Sym);
 }
 
+const MCSymbolRefExpr *MCSymbolRefExpr::Create(const StringRef &Name,
+                                               MCContext &Ctx) {
+  return Create(Ctx.GetOrCreateSymbol(Name), Ctx);
+}
+
+
 /* *** */
 
 bool MCExpr::EvaluateAsAbsolute(MCContext &Ctx, int64_t &Res) const {