MC: Add target hook to control symbol quoting

llvm-svn: 239370
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp
index 515da14..2063ca6 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCExpr.cpp
@@ -21,7 +21,7 @@
   return new (Ctx) ARMMCExpr(Kind, Expr);
 }
 
-void ARMMCExpr::printImpl(raw_ostream &OS) const {
+void ARMMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
   switch (Kind) {
   default: llvm_unreachable("Invalid kind!");
   case VK_ARM_HI16: OS << ":upper16:"; break;
@@ -31,7 +31,7 @@
   const MCExpr *Expr = getSubExpr();
   if (Expr->getKind() != MCExpr::SymbolRef)
     OS << '(';
-  Expr->print(OS);
+  Expr->print(OS, MAI);
   if (Expr->getKind() != MCExpr::SymbolRef)
     OS << ')';
 }