Add a --disable-compression option like llvm-link/llvm-as etc have

llvm-svn: 29941
diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
index 5c61549..0602289 100644
--- a/llvm/tools/opt/opt.cpp
+++ b/llvm/tools/opt/opt.cpp
@@ -38,6 +38,8 @@
 static cl::list<const PassInfo*, bool, PassNameParser>
 PassList(cl::desc("Optimizations available:"));
 
+static cl::opt<bool> NoCompress("disable-compression", cl::init(false),
+       cl::desc("Don't compress the generated bytecode"));
 
 // Other command line options...
 //
@@ -250,7 +252,7 @@
 
     // Write bytecode out to disk or cout as the last step...
     if (!NoOutput && !AnalyzeOnly)
-      Passes.add(new WriteBytecodePass(Out, Out != &std::cout));
+      Passes.add(new WriteBytecodePass(Out, Out != &std::cout, !NoCompress));
 
     // Now that we have all of the passes ready, run them.
     Passes.run(*M.get());