Add this back, as its absence introduces assertions, and it seems to work now
that Instructions are annotable again

llvm-svn: 12045
diff --git a/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp b/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp
index 92c670c..acd76fb 100644
--- a/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp
+++ b/llvm/lib/Target/SparcV9/SparcV9TargetMachine.cpp
@@ -177,11 +177,8 @@
   // function has been emitted.
   PM.add(createAsmPrinterPass(Out, *this));
 
-  // FIXME: this pass crashes if added; there is a double deletion going on
-  // somewhere inside it. This is caught when running the SparcV9 code generator
-  // on X86, but is typically ignored when running natively.
   // Free machine-code IR which is no longer needed:
-  // PM.add(createSparcV9MachineCodeDestructionPass());
+  PM.add(createSparcV9MachineCodeDestructionPass());
 
   // Emit bytecode to the assembly file into its special section next
   if (EmitMappingInfo)