diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index bc6063c36d..66be160afe 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -1351,17 +1351,13 @@ SDValue SelectionDAG::getVectorShuffle(EVT VT, SDLoc dl, SDValue N1, commuteShuffle(N1, N2, MaskVec); } - // If Identity shuffle, or all shuffle in to undef, return that node. - bool AllUndef = true; + // If Identity shuffle return that node. bool Identity = true; for (unsigned i = 0; i != NElts; ++i) { if (MaskVec[i] >= 0 && MaskVec[i] != (int)i) Identity = false; - if (MaskVec[i] >= 0) AllUndef = false; } if (Identity && NElts == N1.getValueType().getVectorNumElements()) return N1; - if (AllUndef) - return getUNDEF(VT); FoldingSetNodeID ID; SDValue Ops[2] = { N1, N2 }; |