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| author | Devang Patel <dpatel@apple.com> | 2008-09-03 00:10:56 +0000 |
|---|---|---|
| committer | Devang Patel <dpatel@apple.com> | 2008-09-03 00:10:56 +0000 |
| commit | a9348dc7acc6f292425721c178311d7b0b5144b6 (patch) | |
| tree | 37f6a290428ef0860c18a24cddbc61f79a350767 /lib/Transforms/Scalar | |
| parent | c3f44b0d636ff9a6d706ea9ac17ae77c8fa8aeff (diff) | |
| download | external_llvm-a9348dc7acc6f292425721c178311d7b0b5144b6.zip external_llvm-a9348dc7acc6f292425721c178311d7b0b5144b6.tar.gz external_llvm-a9348dc7acc6f292425721c178311d7b0b5144b6.tar.bz2 | |
Check iteration count.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55680 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar')
| -rw-r--r-- | lib/Transforms/Scalar/LoopStrengthReduce.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/lib/Transforms/Scalar/LoopStrengthReduce.cpp index b2c5977..16b8dbb 100644 --- a/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -1908,6 +1908,10 @@ BinaryOperator *getNewPHIIncrement(BinaryOperator *Incr, PHINode *PHI, /// change the type of IV, if possible. void LoopStrengthReduce::OptimizeIVType(Loop *L) { + SCEVHandle IterationCount = SE->getIterationCount(L); + if (isa<SCEVCouldNotCompute>(IterationCount)) + return; + BasicBlock *LPH = L->getLoopPreheader(); BasicBlock *LatchBB = L->getLoopLatch(); SmallVector<PHINode *, 4> PHIs; |