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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-07-27 15:08:53 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-07-27 15:08:53 +0000 |
| commit | 0d543b5921c4cf5fe150700b505f867a9fac39a8 (patch) | |
| tree | f3f548b96987fff14ee8733413c6be80ccb5a09f /llvm/lib/CodeGen/SelectionDAG | |
| parent | 914a958e562e475ec4e659637e5057364c20e2fe (diff) | |
| download | bcm5719-llvm-0d543b5921c4cf5fe150700b505f867a9fac39a8.tar.gz bcm5719-llvm-0d543b5921c4cf5fe150700b505f867a9fac39a8.zip | |
[SelectionDAG] Tidyup mask creation. NFCI.
Assign all concat elements to UNDEF and then just replace the first element, instead of copying everything individually.
llvm-svn: 309277
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp index d41054b15bb..395fa3936dc 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp @@ -3021,12 +3021,9 @@ SDValue DAGTypeLegalizer::convertMask(SDValue InMask, EVT MaskVT, } else if (CurrMaskNumEls < ToMaskVT.getVectorNumElements()) { unsigned NumSubVecs = (ToMaskVT.getVectorNumElements() / CurrMaskNumEls); EVT SubVT = Mask->getValueType(0); - SmallVector<SDValue, 16> SubConcatOps(NumSubVecs); - SubConcatOps[0] = Mask; - for (unsigned i = 1; i < NumSubVecs; ++i) - SubConcatOps[i] = DAG.getUNDEF(SubVT); - Mask = - DAG.getNode(ISD::CONCAT_VECTORS, SDLoc(Mask), ToMaskVT, SubConcatOps); + SmallVector<SDValue, 16> SubOps(NumSubVecs, DAG.getUNDEF(SubVT)); + SubOps[0] = Mask; + Mask = DAG.getNode(ISD::CONCAT_VECTORS, SDLoc(Mask), ToMaskVT, SubOps); } assert((Mask->getValueType(0) == ToMaskVT) && |
