diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp index e20f4be998e..1fcc45a3a4b 100644 --- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -608,7 +608,10 @@ RemoveCommonExpressionsFromUseBases(std::vector<BasedUser> &Uses) { 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. |
