diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeTypes.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeTypes.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp index 80f555bde9..af4f356652 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp @@ -946,6 +946,25 @@ bool DAGTypeLegalizer::CustomWidenLowerNode(SDNode *N, EVT VT) { return true; } +SDValue DAGTypeLegalizer::DecomposeMERGE_VALUES(SDNode *N) { + unsigned i; + // A MERGE_VALUES node can produce any number of values. + // We know that the first illegal type needs to be handled. + for (i = 0; isTypeLegal(N->getValueType(i)); ++i) + ReplaceValueWith(SDValue(N, i), SDValue(N->getOperand(i))); + + // The first illegal result must be the one that needs to be handled. + SDValue BadValue = N->getOperand(i); + + // Legalize the rest of the results into the input operands whether they + // are legal or not. + unsigned e = N->getNumValues(); + for (++i; i != e; ++i) + ReplaceValueWith(SDValue(N, i), SDValue(N->getOperand(i))); + + return BadValue; +} + /// GetSplitDestVTs - Compute the VTs needed for the low/hi parts of a type /// which is split into two not necessarily identical pieces. void DAGTypeLegalizer::GetSplitDestVTs(EVT InVT, EVT &LoVT, EVT &HiVT) { |