make -print-machineinstrs work for both SparcV9 and X86

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12122 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/TargetMachine.cpp

@@ -14,8 +14,22 @@
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Type.h"
 #include "llvm/IntrinsicLowering.h"
+#include "Support/CommandLine.h"
 using namespace llvm;
 
+//---------------------------------------------------------------------------
+// Command-line options that tend to be useful on more than one back-end.
+//
+
+namespace llvm { 
+  bool PrintMachineCode;
+};
+namespace {
+  cl::opt<bool, true> PrintCode("print-machineinstrs",
+    cl::desc("Print generated machine code"),
+    cl::location(PrintMachineCode), cl::init(false));
+};
+
 //---------------------------------------------------------------------------
 // TargetMachine Class
 //