diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index 2eccb6b0fc..10b6b76da4 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -809,6 +809,7 @@ static bool MaskedValueIsZero(const SDOperand &Op, uint64_t Mask, return MaskedValueIsZero(Op.getOperand(0), NewVal, TLI); } return false; + // TODO we could handle some SRA cases here. default: break; } @@ -1061,11 +1062,13 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT, // (X != 0) | (Y != 0) -> (X|Y != 0) // (X == 0) & (Y == 0) -> (X|Y == 0) + // (X < 0) | (Y < 0) -> (X|Y < 0) if (LR == RR && isa<ConstantSDNode>(LR) && cast<ConstantSDNode>(LR)->getValue() == 0 && Op2 == LHS->getCondition() && MVT::isInteger(LL.getValueType())) { if ((Op2 == ISD::SETEQ && Opcode == ISD::AND) || - (Op2 == ISD::SETNE && Opcode == ISD::OR)) + (Op2 == ISD::SETNE && Opcode == ISD::OR) || + (Op2 == ISD::SETLT && Opcode == ISD::OR)) return getSetCC(Op2, VT, getNode(ISD::OR, LR.getValueType(), LL, RL), LR); } |