Switch the asmprinter (.ll) and all the stuff it requires over to

use raw_ostream instead of std::ostream.  Among other goodness,
this speeds up llvm-dis of kc++ with a release build from 0.85s
to 0.49s (88% faster).

Other interesting changes:
 1) This makes Value::print be non-virtual.
 2) AP[S]Int and ConstantRange can no longer print to ostream directly, 
    use raw_ostream instead.
 3) This fixes a bug in raw_os_ostream where it didn't flush itself 
    when destroyed.
 4) This adds a new SDNode::print method, instead of only allowing "dump".


A lot of APIs have both std::ostream and raw_ostream versions, it would
be useful to go through and systematically anihilate the std::ostream 
versions.

This passes dejagnu, but there may be minor fallout, plz let me know if
so and I'll fix it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55263 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/ARMConstantPoolValue.cpp

@@ -15,6 +15,7 @@
 #include "llvm/ADT/FoldingSet.h"
 #include "llvm/GlobalValue.h"
 #include "llvm/Type.h"
+#include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
 ARMConstantPoolValue::ARMConstantPoolValue(GlobalValue *gv, unsigned id,
@@ -72,7 +73,7 @@ ARMConstantPoolValue::AddSelectionDAGCSEId(FoldingSetNodeID &ID) {
   ID.AddInteger(PCAdjust);
 }
 
-void ARMConstantPoolValue::print(std::ostream &O) const {
+void ARMConstantPoolValue::print(raw_ostream &O) const {
   if (GV)
     O << GV->getName();
   else