resolved conflicts for merge of f46fa664 to master

Change-Id: I073ac3c0f95b3da9567e54c1fc8e8b1b0d69e33f
diff --git a/lib/ExecutionEngine/Compiler.cpp b/lib/ExecutionEngine/Compiler.cpp
index 5895057..58a49c5 100644
--- a/lib/ExecutionEngine/Compiler.cpp
+++ b/lib/ExecutionEngine/Compiler.cpp
@@ -274,7 +274,7 @@
   std::vector<const char*> ExportSymbols;
 
   // Defaults to maximum optimization level from MetadataExtractor.
-  int OptimizationLevel = ME.getOptimizationLevel();
+  uint32_t OptimizationLevel = ME.getOptimizationLevel();
 
   if (OptimizationLevel == 0) {
     CodeGenOptLevel = llvm::CodeGenOpt::None;