diff options
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAGNodes.h | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h index c467967b0f..3fbe905ccd 100644 --- a/include/llvm/CodeGen/SelectionDAGNodes.h +++ b/include/llvm/CodeGen/SelectionDAGNodes.h @@ -301,16 +301,16 @@ namespace ISD { /// vector value) starting with the (potentially variable) element number /// IDX, which must be a multiple of the result vector length. EXTRACT_SUBVECTOR, - + /// VECTOR_SHUFFLE(VEC1, VEC2, SHUFFLEVEC) - Returns a vector, of the same /// type as VEC1/VEC2. SHUFFLEVEC is a BUILD_VECTOR of constant int values - /// (regardless of whether its datatype is legal or not) that indicate - /// which value each result element will get. The elements of VEC1/VEC2 are - /// enumerated in order. This is quite similar to the Altivec 'vperm' - /// instruction, except that the indices must be constants and are in terms - /// of the element size of VEC1/VEC2, not in terms of bytes. + /// (maybe of an illegal datatype) or undef that indicate which value each + /// result element will get. The elements of VEC1/VEC2 are enumerated in + /// order. This is quite similar to the Altivec 'vperm' instruction, except + /// that the indices must be constants and are in terms of the element size + /// of VEC1/VEC2, not in terms of bytes. VECTOR_SHUFFLE, - + /// SCALAR_TO_VECTOR(VAL) - This represents the operation of loading a /// scalar value into element 0 of the resultant vector type. The top /// elements 1 to N-1 of the N-element vector are undefined. |