[llvm-commits] [llvm] r141880 - /llvm/trunk/lib/Analysis/ScalarEvolutionNormalization.cpp

[Andrew Trick]

Author: atrick
Date: Thu Oct 13 13:49:23 2011
New Revision: 141880

URL: http://llvm.org/viewvc/llvm-project?rev=141880&view=rev
Log:
Fix memory corruption I introduced a few checkins ago.

Self-review easily caught this obvious bug.

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

Modified: llvm/trunk/lib/Analysis/ScalarEvolutionNormalization.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/ScalarEvolutionNormalization.cpp?rev=141880&r1=141879&r2=141880&view=diff
==============================================================================
--- llvm/trunk/lib/Analysis/ScalarEvolutionNormalization.cpp (original)
+++ llvm/trunk/lib/Analysis/ScalarEvolutionNormalization.cpp Thu Oct 13 13:49:23 2011
@@ -202,12 +202,13 @@
   if (isa<SCEVConstant>(S) || isa<SCEVUnknown>(S))
     return S;
 
-  const SCEV *&ExprRef = Transformed[S];
-  if (ExprRef)
-    return ExprRef;
+  const SCEV *Result = Transformed.lookup(S);
+  if (Result)
+    return Result;
 
-  ExprRef = TransformImpl(S, User, OperandValToReplace);
-  return ExprRef;
+  Result = TransformImpl(S, User, OperandValToReplace);
+  Transformed[S] = Result;
+  return Result;
 }
 
 /// Top level driver for transforming an expression DAG into its requested