Use raw_ostream throughout the AsmPrinter.

llvm-svn: 55092
diff --git a/llvm/lib/Target/IA64/IA64TargetMachine.cpp b/llvm/lib/Target/IA64/IA64TargetMachine.cpp
index 7a0e456..c789a86 100644
--- a/llvm/lib/Target/IA64/IA64TargetMachine.cpp
+++ b/llvm/lib/Target/IA64/IA64TargetMachine.cpp
@@ -82,7 +82,7 @@
   return true;
 }
 bool IA64TargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast, 
-                                           std::ostream &Out) {
+                                           raw_ostream &Out) {
   PM.add(createIA64CodePrinterPass(Out, *this));
   return false;
 }