[ValueTracking] Remove untested / unreachable code, NFC

[oota-llvm.git] / lib / Analysis / LoopInfo.cpp

diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index 1ad4fd893bc132f977ba3b240c282534f5b7e7dd..9ee72361c92a6bf9582f0edd27666d187b1c6566 100644 (file)
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -220,6 +220,8 @@ bool Loop::isSafeToClone() const {
         if (CI->cannotDuplicate())
           return false;
       }
+      if (BI->getType()->isTokenTy() && BI->isUsedOutsideOfBlock(*I))
+        return false;
     }
   }
   return true;
@@ -689,6 +691,20 @@ PreservedAnalyses LoopPrinterPass::run(Function &F,
   return PreservedAnalyses::all();
 }
 
+PrintLoopPass::PrintLoopPass() : OS(dbgs()) {}
+PrintLoopPass::PrintLoopPass(raw_ostream &OS, const std::string &Banner)
+    : OS(OS), Banner(Banner) {}
+
+PreservedAnalyses PrintLoopPass::run(Loop &L) {
+  OS << Banner;
+  for (auto *Block : L.blocks())
+    if (Block)
+      Block->print(OS);
+    else
+      OS << "Printing <null> block";
+  return PreservedAnalyses::all();
+}
+
 //===----------------------------------------------------------------------===//
 // LoopInfo implementation
 //