diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG')
-rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index accdd0a5e8..bf7541bf28 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -3905,13 +3905,29 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node) { Tmp2 = Node->getOperand(1); // RHS Tmp3 = Node->getOperand(2); // True Tmp4 = Node->getOperand(3); // False + EVT VT = Node->getValueType(0); SDValue CC = Node->getOperand(4); + ISD::CondCode CCOp = cast<CondCodeSDNode>(CC)->get(); + + if (TLI.isCondCodeLegal(CCOp, Tmp1.getSimpleValueType())) { + // If the condition code is legal, then we need to expand this + // node using SETCC and SELECT. + EVT CmpVT = Tmp1.getValueType(); + assert(!TLI.isOperationExpand(ISD::SELECT, VT) && + "Cannot expand ISD::SELECT_CC when ISD::SELECT also needs to be " + "expanded."); + EVT CCVT = TLI.getSetCCResultType(*DAG.getContext(), CmpVT); + SDValue Cond = DAG.getNode(ISD::SETCC, dl, CCVT, Tmp1, Tmp2, CC); + Results.push_back(DAG.getSelect(dl, VT, Cond, Tmp3, Tmp4)); + break; + } + // SELECT_CC is legal, so the condition code must not be. bool Legalized = false; // Try to legalize by inverting the condition. This is for targets that // might support an ordered version of a condition, but not the unordered // version (or vice versa). - ISD::CondCode InvCC = ISD::getSetCCInverse(cast<CondCodeSDNode>(CC)->get(), + ISD::CondCode InvCC = ISD::getSetCCInverse(CCOp, Tmp1.getValueType().isInteger()); if (TLI.isCondCodeLegal(InvCC, Tmp1.getSimpleValueType())) { // Use the new condition code and swap true and false |