diff options
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp index 074f6610c47..64613b186e8 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp @@ -1449,13 +1449,13 @@ Value *InstCombiner::FoldOrOfICmps(ICmpInst *LHS, ICmpInst *RHS) { } } - // (icmp ult (X + CA), C1) | (icmp eq X, C2) -> (icmp ult (X + CA), C1 + 1) + // (icmp ult (X + CA), C1) | (icmp eq X, C2) -> (icmp ule (X + CA), C1) // iff C2 + CA == C1. - if (LHSCC == ICmpInst::ICMP_ULT) { + if (LHSCC == ICmpInst::ICMP_ULT && RHSCC == ICmpInst::ICMP_EQ) { ConstantInt *AddCst; if (match(Val, m_Add(m_Specific(Val2), m_ConstantInt(AddCst)))) if (RHSCst->getValue() + AddCst->getValue() == LHSCst->getValue()) - return Builder->CreateICmp(LHSCC, Val, AddOne(LHSCst)); + return Builder->CreateICmpULE(Val, LHSCst); } // From here on, we only handle: |
