namespace fix

Author: arsenm

llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp

@@ -2247,7 +2247,7 @@ bool HexagonLoopIdiomRecognize::processCopyingStore(Loop *CurLoop,
 
       // FIXME: This should check if the call is supported
       StringRef HexagonVolatileMemcpyName =
-          RuntimeLibcallsInfo::getLibcallImplName(
+          RTLIB::RuntimeLibcallsInfo::getLibcallImplName(
               RTLIB::impl_hexagon_memcpy_forward_vp4cp4n2);
       FunctionCallee Fn = M->getOrInsertFunction(
           HexagonVolatileMemcpyName, VoidTy, PtrTy, PtrTy, Int32Ty);