[llvm-commits] [llvm] r155567 - /llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Wed Apr 25 13:01:32 2012
New Revision: 155567

URL: http://llvm.org/viewvc/llvm-project?rev=155567&view=rev
Log:
Print IV chain numbers while collecting them.

Modified:
    llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp?rev=155567&r1=155566&r2=155567&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LoopStrengthReduce.cpp Wed Apr 25 13:01:32 2012
@@ -2487,12 +2487,12 @@
     ++NChains;
     IVChainVec.resize(NChains);
     ChainUsersVec.resize(NChains);
-    DEBUG(dbgs() << "IV Head: (" << *UserInst << ") IV=" << *LastIncExpr
-          << "\n");
+    DEBUG(dbgs() << "IV Chain#" << ChainIdx << " Head: (" << *UserInst
+                 << ") IV=" << *LastIncExpr << "\n");
   }
   else
-    DEBUG(dbgs() << "IV  Inc: (" << *UserInst << ") IV+" << *LastIncExpr
-          << "\n");
+    DEBUG(dbgs() << "IV Chain#" << ChainIdx << "  Inc: (" << *UserInst
+                 << ") IV+" << *LastIncExpr << "\n");
 
   // Add this IV user to the end of the chain.
   IVChainVec[ChainIdx].push_back(IVInc(UserInst, IVOper, LastIncExpr));
@@ -2551,6 +2551,7 @@
 /// loop latch. This will discover chains on side paths, but requires
 /// maintaining multiple copies of the Chains state.
 void LSRInstance::CollectChains() {
+  DEBUG(dbgs() << "Collecting IV Chains.\n");
   SmallVector<ChainUsers, 8> ChainUsersVec;
 
   SmallVector<BasicBlock *,8> LatchPath;