diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/InstructionCombining.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp index ee0b9374cb1..6c5a16c3615 100644 --- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp @@ -2950,20 +2950,16 @@ Instruction *InstCombiner::visitSub(BinaryOperator &I) { // &A[10] - &A[0]: we should compile this to "10". if (TD) { Value *LHSOp, *RHSOp; - if (match(Op0, m_Cast<PtrToIntInst>(m_Value(LHSOp))) && - match(Op1, m_Cast<PtrToIntInst>(m_Value(RHSOp)))) + if (match(Op0, m_PtrToInt(m_Value(LHSOp))) && + match(Op1, m_PtrToInt(m_Value(RHSOp)))) if (Value *Res = OptimizePointerDifference(LHSOp, RHSOp, I.getType())) return ReplaceInstUsesWith(I, Res); // trunc(p)-trunc(q) -> trunc(p-q) - if (TruncInst *LHST = dyn_cast<TruncInst>(Op0)) - if (TruncInst *RHST = dyn_cast<TruncInst>(Op1)) - if (PtrToIntInst *LHS = dyn_cast<PtrToIntInst>(LHST->getOperand(0))) - if (PtrToIntInst *RHS = dyn_cast<PtrToIntInst>(RHST->getOperand(0))) - if (Value *Res = OptimizePointerDifference(LHS->getOperand(0), - RHS->getOperand(0), - I.getType())) - return ReplaceInstUsesWith(I, Res); + if (match(Op0, m_Trunc(m_PtrToInt(m_Value(LHSOp)))) && + match(Op1, m_Trunc(m_PtrToInt(m_Value(RHSOp))))) + if (Value *Res = OptimizePointerDifference(LHSOp, RHSOp, I.getType())) + return ReplaceInstUsesWith(I, Res); } return 0; |
