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| author | Sanjay Patel <spatel@rotateright.com> | 2019-05-21 18:28:22 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2019-05-21 18:28:22 +0000 |
| commit | 51dc59d0903fc86b37e9d910aa6f33dd87fdaae5 (patch) | |
| tree | c3dfa49cb405c2e6eb610b49d06156416d6999c7 /llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | |
| parent | 6b21c4a4eed8e7a5ab5d80dfe207eadb7cf5a6ab (diff) | |
| download | llvm-51dc59d0903fc86b37e9d910aa6f33dd87fdaae5.zip llvm-51dc59d0903fc86b37e9d910aa6f33dd87fdaae5.tar.gz llvm-51dc59d0903fc86b37e9d910aa6f33dd87fdaae5.tar.bz2 | |
[SelectionDAG] remove redundant code; NFCI
getNode() squashes concatenation of undefs via FoldCONCAT_VECTORS():
// Concat of UNDEFs is UNDEF.
if (llvm::all_of(Ops, [](SDValue Op) { return Op.isUndef(); }))
return DAG.getUNDEF(VT);
llvm-svn: 361284
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 5c2d265..31410f2 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -3637,12 +3637,8 @@ void SelectionDAGBuilder::visitShuffleVector(const User &I) { MOps1[0] = Src1; MOps2[0] = Src2; - Src1 = Src1.isUndef() - ? DAG.getUNDEF(PaddedVT) - : DAG.getNode(ISD::CONCAT_VECTORS, DL, PaddedVT, MOps1); - Src2 = Src2.isUndef() - ? DAG.getUNDEF(PaddedVT) - : DAG.getNode(ISD::CONCAT_VECTORS, DL, PaddedVT, MOps2); + Src1 = DAG.getNode(ISD::CONCAT_VECTORS, DL, PaddedVT, MOps1); + Src2 = DAG.getNode(ISD::CONCAT_VECTORS, DL, PaddedVT, MOps2); // Readjust mask for new input vector length. SmallVector<int, 8> MappedOps(PaddedMaskNumElts, -1); |