Add optimization bisect opt-in calls for NVPTX passes

Differential Revision: http://reviews.llvm.org/D19518

llvm-svn: 267635
diff --git a/llvm/lib/Target/NVPTX/NVPTXImageOptimizer.cpp b/llvm/lib/Target/NVPTX/NVPTXImageOptimizer.cpp
index aa36b6b..8d00bbb 100644
--- a/llvm/lib/Target/NVPTX/NVPTXImageOptimizer.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXImageOptimizer.cpp
@@ -50,6 +50,9 @@
   : FunctionPass(ID) {}
 
 bool NVPTXImageOptimizer::runOnFunction(Function &F) {
+  if (skipFunction(F))
+    return false;
+
   bool Changed = false;
   InstrToDelete.clear();