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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 | 02742710f36763ed6210f03012efc8262c177115 (patch) | |
| tree | ade7c682b3f2cdf27b578aa459bf5e1cbc9ed4d2 /llvm/lib/Transforms | |
| parent | 23e3fb9e83ffd64f4e04dc8d344f45a3c50554e2 (diff) | |
| download | bcm5719-llvm-02742710f36763ed6210f03012efc8262c177115.tar.gz bcm5719-llvm-02742710f36763ed6210f03012efc8262c177115.zip | |
SCEVAddExpr::get() of an empty list is invalid.
llvm-svn: 22724
Diffstat (limited to 'llvm/lib/Transforms')
| -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. |
