fix a problem with a missing _, testcase pending.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94095 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
index 1337d60..c23715f 100644
--- a/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
+++ b/lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
@@ -218,7 +218,7 @@
             MMI->getObjFileInfo<MachineModuleInfoMachO>().getFnStubEntry(Sym);
           if (StubSym == 0) {
             TempNameStr.erase(TempNameStr.end()-5, TempNameStr.end());
-            StubSym = OutContext.GetOrCreateSymbol(TempNameStr.str());
+            StubSym = GetExternalSymbolSymbol(MO.getSymbolName());
           }
           O << *Sym;
           return;