diff options
| -rw-r--r-- | lib/Target/PowerPC/PPCISelDAGToDAG.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp index a0f55adb51..8c0d6d00be 100644 --- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp +++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp @@ -1376,6 +1376,27 @@ SDOperand PPC32DAGToDAGISel::Select(SDOperand Op) { break; } + case ISD::SELECT_CC: { + ISD::CondCode CC = cast<CondCodeSDNode>(N->getOperand(4))->get(); + + // handle the setcc cases here. select_cc lhs, 0, 1, 0, cc + if (ConstantSDNode *N1C = dyn_cast<ConstantSDNode>(N->getOperand(1))) + if (ConstantSDNode *N2C = dyn_cast<ConstantSDNode>(N->getOperand(2))) + if (ConstantSDNode *N3C = dyn_cast<ConstantSDNode>(N->getOperand(3))) + if (N1C->isNullValue() && N3C->isNullValue() && + N2C->getValue() == 1ULL && CC == ISD::SETNE) { + SDOperand LHS = Select(N->getOperand(0)); + SDOperand Tmp = + CurDAG->getTargetNode(PPC::ADDIC, MVT::i32, MVT::Flag, + LHS, getI32Imm(~0U)); + CurDAG->SelectNodeTo(N, PPC::SUBFE, MVT::i32, Tmp, LHS, + Tmp.getValue(1)); + break; + } + + assert(0 && "Select_cc not implemented yet!"); + } + case ISD::CALLSEQ_START: case ISD::CALLSEQ_END: { unsigned Amt = cast<ConstantSDNode>(N->getOperand(1))->getValue(); |