1 files changed, 22 insertions, 0 deletions
diff --git a/lib/Analysis/InductionVariable.cpp b/lib/Analysis/InductionVariable.cpp
index f7b72e5b9c..485586a018 100644
--- a/lib/Analysis/InductionVariable.cpp
+++ b/lib/Analysis/InductionVariable.cpp
@@ -23,6 +23,7 @@
 #include "llvm/InstrTypes.h"
 #include "llvm/Type.h"
 #include "llvm/Constants.h"
+#include "llvm/Assembly/Writer.h"
 
 using analysis::ExprType;
 
@@ -154,3 +155,24 @@ InductionVariable::InductionVariable(PHINode *P, LoopInfo *LoopInfo) {
   // Classify the induction variable type now...
   InductionType = InductionVariable::Classify(Start, Step, L);
 }
+
+void InductionVariable::print(std::ostream &o) const {
+  switch (InductionType) {
+  case InductionVariable::Cannonical:   o << "Cannonical ";   break;
+  case InductionVariable::SimpleLinear: o << "SimpleLinear "; break;
+  case InductionVariable::Linear:       o << "Linear ";       break;
+  case InductionVariable::Unknown:      o << "Unrecognized "; break;
+  }
+  o << "Induction Variable";
+  if (Phi) {
+    WriteAsOperand(o, Phi);
+    o << ":\n" << Phi;
+  } else {
+    o << "\n";
+  }
+  if (InductionType == InductionVariable::Unknown) return;
+
+  o << "  Start ="; WriteAsOperand(o, Start);
+  o << "  Step =" ; WriteAsOperand(o, Step);
+  o << "\n";
+}