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.

llvm-svn: 55263

1 files changed, 7 insertions, 6 deletions

diff --git a/llvm/lib/Analysis/LoopVR.cpp b/llvm/lib/Analysis/LoopVR.cpp
index eb7524a9c2f..7f5de259caf 100644
--- a/llvm/lib/Analysis/LoopVR.cpp
+++ b/llvm/lib/Analysis/LoopVR.cpp
@@ -6,6 +6,10 @@
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
+//
+// FIXME: What does this do?
+//
+//===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "loopvr"
 #include "llvm/Analysis/LoopVR.h"
@@ -15,13 +19,11 @@
 #include "llvm/Assembly/Writer.h"
 #include "llvm/Support/CFG.h"
 #include "llvm/Support/Debug.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
 char LoopVR::ID = 0;
-namespace {
 static RegisterPass<LoopVR> X("loopvr", "Loop Value Ranges", true, true);
-}
 
 /// getRange - determine the range for a particular SCEV within a given Loop
 ConstantRange LoopVR::getRange(SCEVHandle S, Loop *L, ScalarEvolution &SE) {
@@ -220,11 +222,10 @@ ConstantRange LoopVR::getRange(SCEVHandle S, SCEVHandle T, ScalarEvolution &SE){
 bool LoopVR::runOnFunction(Function &F) { Map.clear(); return false; }
 
 void LoopVR::print(std::ostream &os, const Module *) const {
+  raw_os_ostream OS(os);
   for (std::map<Value *, ConstantRange *>::const_iterator I = Map.begin(),
        E = Map.end(); I != E; ++I) {
-    os << *I->first << ": ";
-    I->second->print(os);
-    os << "\n";
+    OS << *I->first << ": " << *I->second << '\n';
   }
 }