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| author | Chris Lattner <sabre@nondot.org> | 2005-08-09 01:13:47 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2005-08-09 01:13:47 +0000 |
| commit | b965ee5914bb9cdfd1500f29a4a5aa2a128e69c1 (patch) | |
| tree | 12eb16b1bfa26ad573dc911569e5c29031fc9730 /lib/Transforms/Scalar/LoopStrengthReduce.cpp | |
| parent | bf9af65a9386836eee0eb549304b904d145c7e93 (diff) | |
SCEVAddExpr::get() of an empty list is invalid.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22724 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/LoopStrengthReduce.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/LoopStrengthReduce.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp index e20f4be998..1fcc45a3a4 100644 --- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/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. |