diff options
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index c67cb71b30..44aa5082b1 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -2920,9 +2920,10 @@ ScalarEvolution::getUnsignedRange(const SCEV *S) { // initial value. if (AddRec->hasNoUnsignedWrap()) if (const SCEVConstant *C = dyn_cast<SCEVConstant>(AddRec->getStart())) - ConservativeResult = - ConstantRange(C->getValue()->getValue(), - APInt(getTypeSizeInBits(C->getType()), 0)); + if (!C->isZero()) + ConservativeResult = + ConstantRange(C->getValue()->getValue(), + APInt(getTypeSizeInBits(C->getType()), 0)); // TODO: non-affine addrec if (AddRec->isAffine()) { |