diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp index 73ade5d0751..e1bae11b40d 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -2926,6 +2926,8 @@ static Value *foldICmpWithLowBitMaskedVal(ICmpInst &I, return nullptr; // Ignore the other case. if (!match(M, m_Constant())) // Can not do this fold with non-constant. return nullptr; + if (!match(M, m_NonNegative())) // Must not have any -1 vector elements. + return nullptr; DstPred = ICmpInst::Predicate::ICMP_SLE; break; case ICmpInst::Predicate::ICMP_SLT: @@ -2934,6 +2936,8 @@ static Value *foldICmpWithLowBitMaskedVal(ICmpInst &I, return nullptr; // Ignore the other case. if (!match(M, m_Constant())) // Can not do this fold with non-constant. return nullptr; + if (!match(M, m_NonNegative())) // Must not have any -1 vector elements. + return nullptr; DstPred = ICmpInst::Predicate::ICMP_SGT; break; case ICmpInst::Predicate::ICMP_SLE: |