diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index c41aef34b53..80ac8b95e4e 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -1129,7 +1129,9 @@ void SelectionDAGLegalize::LegalizeOp(SDNode *Node) { case ISD::SMULFIX: case ISD::SMULFIXSAT: case ISD::UMULFIX: - case ISD::UMULFIXSAT: { + case ISD::UMULFIXSAT: + case ISD::SDIVFIX: + case ISD::UDIVFIX: { unsigned Scale = Node->getConstantOperandVal(2); Action = TLI.getFixedPointOperationAction(Node->getOpcode(), Node->getValueType(0), Scale); @@ -3417,6 +3419,24 @@ bool SelectionDAGLegalize::ExpandNode(SDNode *Node) { case ISD::UMULFIXSAT: Results.push_back(TLI.expandFixedPointMul(Node, DAG)); break; + case ISD::SDIVFIX: + case ISD::UDIVFIX: + if (SDValue V = TLI.expandFixedPointDiv(Node->getOpcode(), SDLoc(Node), + Node->getOperand(0), + Node->getOperand(1), + Node->getConstantOperandVal(2), + DAG)) { + Results.push_back(V); + break; + } + // FIXME: We might want to retry here with a wider type if we fail, if that + // type is legal. + // FIXME: Technically, so long as we only have sdivfixes where BW+Scale is + // <= 128 (which is the case for all of the default Embedded-C types), + // we will only get here with types and scales that we could always expand + // if we were allowed to generate libcalls to division functions of illegal + // type. But we cannot do that. + llvm_unreachable("Cannot expand DIVFIX!"); case ISD::ADDCARRY: case ISD::SUBCARRY: { SDValue LHS = Node->getOperand(0); |
