[CUDA] Add --no-cuda-noopt-debug, which disables --cuda-noopt-debug.

Reviewers: tra

Subscribers: cfe-commits, jhen

Differential Revision: http://reviews.llvm.org/D19251

llvm-svn: 266708
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 75424e8..4dd8602 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -10956,7 +10956,8 @@
 
   ArgStringList CmdArgs;
   CmdArgs.push_back(TC.getTriple().isArch64Bit() ? "-m64" : "-m32");
-  if (Args.getLastArg(options::OPT_cuda_noopt_device_debug)) {
+  if (Args.hasFlag(options::OPT_cuda_noopt_device_debug,
+                   options::OPT_no_cuda_noopt_device_debug, false)) {
     // ptxas does not accept -g option if optimization is enabled, so
     // we ignore the compiler's -O* options if we want debug info.
     CmdArgs.push_back("-g");