[llvm-commits] CVS: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp

[Chris Lattner]

Changes in directory llvm/lib/Transforms/Scalar:

LoopStrengthReduce.cpp updated: 1.43 -> 1.44
---
Log message:

SCEVAddExpr::get() of an empty list is invalid.



---
Diffs of the changes:  (+4 -1)

 LoopStrengthReduce.cpp |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletion(-)


Index: llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
diff -u llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.43 llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.44
--- llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:1.43	Mon Aug  8 19:18:09 2005
+++ llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp	Mon Aug  8 20:13:47 2005
@@ -608,7 +608,10 @@
       for (unsigned j = 0, e = AE->getNumOperands(); j != e; ++j)
         if (!SubExpressionUseCounts.count(AE->getOperand(j)))
           NewOps.push_back(AE->getOperand(j));
-      Uses[i].Base = SCEVAddExpr::get(NewOps);
+      if (NewOps.size() == 0)
+        Uses[i].Base = Zero;
+      else
+        Uses[i].Base = SCEVAddExpr::get(NewOps);
     } else {
       // If the base is zero (which is common), return zero now, there are no
       // CSEs we can find.