[PATCH] Memory management cleanup in Consumed.cpp

[Chris Wailes]

Hi delesley, dblaikie, aaron.ballman,

Used an OwningPtr to clean up some memory management code in Consumed.cpp.

http://llvm-reviews.chandlerc.com/D2016

Files:
  lib/Analysis/Consumed.cpp

Index: lib/Analysis/Consumed.cpp
===================================================================
--- lib/Analysis/Consumed.cpp
+++ lib/Analysis/Consumed.cpp
@@ -27,6 +27,7 @@
 #include "clang/Basic/OperatorKinds.h"
 #include "clang/Basic/SourceLocation.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/raw_ostream.h"
@@ -1259,7 +1260,7 @@
 bool ConsumedAnalyzer::splitState(const CFGBlock *CurrBlock,
                                   const ConsumedStmtVisitor &Visitor) {
   
-  ConsumedStateMap *FalseStates = new ConsumedStateMap(*CurrStates);
+  OwningPtr<ConsumedStateMap> FalseStates(new ConsumedStateMap(*CurrStates));
   PropagationInfo PInfo;
   
   if (const IfStmt *IfNode =
@@ -1274,15 +1275,15 @@
     if (PInfo.isTest()) {
       CurrStates->setSource(Cond);
       FalseStates->setSource(Cond);
-      splitVarStateForIf(IfNode, PInfo.getTest(), CurrStates, FalseStates);
+      splitVarStateForIf(IfNode, PInfo.getTest(), CurrStates,
+                         FalseStates.get());
       
     } else if (PInfo.isBinTest()) {
       CurrStates->setSource(PInfo.testSourceNode());
       FalseStates->setSource(PInfo.testSourceNode());
-      splitVarStateForIfBinOp(PInfo, CurrStates, FalseStates);
+      splitVarStateForIfBinOp(PInfo, CurrStates, FalseStates.get());
       
     } else {
-      delete FalseStates;
       return false;
     }
     
@@ -1294,13 +1295,10 @@
       if ((BinOp = dyn_cast_or_null<BinaryOperator>(BinOp->getLHS()))) {
         PInfo = Visitor.getInfo(BinOp->getRHS());
         
-        if (!PInfo.isTest()) {
-          delete FalseStates;
+        if (!PInfo.isTest())
           return false;
-        }
         
       } else {
-        delete FalseStates;
         return false;
       }
     }
@@ -1326,7 +1324,6 @@
     }
     
   } else {
-    delete FalseStates;
     return false;
   }
   
@@ -1338,9 +1335,7 @@
     delete CurrStates;
     
   if (*++SI)
-    BlockInfo.addInfo(*SI, FalseStates);
-  else
-    delete FalseStates;
+    BlockInfo.addInfo(*SI, FalseStates.take());
   
   CurrStates = NULL;
   return true;
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