[llvm] r231854 - [LoopAccesses] Add debug message to indicate the result of the analysis

[Adam Nemet]

Author: anemet
Date: Tue Mar 10 16:47:39 2015
New Revision: 231854

URL: http://llvm.org/viewvc/llvm-project?rev=231854&view=rev
Log:
[LoopAccesses] Add debug message to indicate the result of the analysis

The debug message was pretty confusing here.  It only reported the
situation with memchecks without the result of the dependence analysis.

Now it prints whether the loop is safe from the POV of the dependence
analysis and if yes, whether we need memchecks.

Modified:
    llvm/trunk/lib/Analysis/LoopAccessAnalysis.cpp

Modified: llvm/trunk/lib/Analysis/LoopAccessAnalysis.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/LoopAccessAnalysis.cpp?rev=231854&r1=231853&r2=231854&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/LoopAccessAnalysis.cpp (original)
+++ llvm/trunk/lib/Analysis/LoopAccessAnalysis.cpp Tue Mar 10 16:47:39 2015
@@ -1161,12 +1161,15 @@ void LoopAccessInfo::analyzeLoop(const V
     }
   }
 
-  if (!CanVecMem)
+  if (CanVecMem)
+    DEBUG(dbgs() << "LAA: No unsafe dependent memory operations in loop.  We"
+                 << (NeedRTCheck ? "" : " don't")
+                 << " need a runtime memory check.\n");
+  else {
     emitAnalysis(LoopAccessReport() <<
                  "unsafe dependent memory operations in loop");
-
-  DEBUG(dbgs() << "LAA: We" << (NeedRTCheck ? "" : " don't") <<
-        " need a runtime memory check.\n");
+    DEBUG(dbgs() << "LAA: unsafe dependent memory operations in loop\n");
+  }
 }
 
 bool LoopAccessInfo::blockNeedsPredication(BasicBlock *BB, Loop *TheLoop,