diff options
Diffstat (limited to 'include/llvm')
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index f194e4e3f9..e5868079cd 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -882,6 +882,14 @@ public: /// element of the result of the vector shuffle. SDValue getShuffleScalarElt(const ShuffleVectorSDNode *N, unsigned Idx); + /// UnrollVectorOp - Utility function used by legalize and lowering to + /// "unroll" a vector operation by splitting out the scalars and operating + /// on each element individually. If the ResNE is 0, fully unroll the vector + /// op. If ResNE is less than the width of the vector op, unroll up to ResNE. + /// If the ResNE is greater than the width of the vector op, unroll the + /// vector op and fill the end of the resulting vector with UNDEFS. + SDValue UnrollVectorOp(SDNode *N, unsigned ResNE = 0); + private: bool RemoveNodeFromCSEMaps(SDNode *N); void AddModifiedNodeToCSEMaps(SDNode *N, DAGUpdateListener *UpdateListener); |