Add a helper getSymbol to AsmPrinter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193627 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsMCInstLower.cpp b/lib/Target/Mips/MipsMCInstLower.cpp
index f46c86a..b6dfadc 100644
--- a/lib/Target/Mips/MipsMCInstLower.cpp
+++ b/lib/Target/Mips/MipsMCInstLower.cpp
@@ -73,7 +73,7 @@
     break;
 
   case MachineOperand::MO_GlobalAddress:
-    Symbol = AsmPrinter.Mang->getSymbol(MO.getGlobal());
+    Symbol = AsmPrinter.getSymbol(MO.getGlobal());
     Offset += MO.getOffset();
     break;