diff options
Diffstat (limited to 'llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp b/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp index f1e4251a44b..15e712ae25d 100644 --- a/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp +++ b/llvm/lib/Target/NVPTX/NVPTXISelLowering.cpp @@ -417,20 +417,13 @@ NVPTXTargetLowering::NVPTXTargetLowering(const NVPTXTargetMachine &TM, setOperationAction(ISD::BITREVERSE, MVT::i32, Legal); setOperationAction(ISD::BITREVERSE, MVT::i64, Legal); - if (STI.hasROT64()) { - setOperationAction(ISD::ROTL, MVT::i64, Legal); - setOperationAction(ISD::ROTR, MVT::i64, Legal); - } else { - setOperationAction(ISD::ROTL, MVT::i64, Expand); - setOperationAction(ISD::ROTR, MVT::i64, Expand); - } - if (STI.hasROT32()) { - setOperationAction(ISD::ROTL, MVT::i32, Legal); - setOperationAction(ISD::ROTR, MVT::i32, Legal); - } else { - setOperationAction(ISD::ROTL, MVT::i32, Expand); - setOperationAction(ISD::ROTR, MVT::i32, Expand); - } + // TODO: we may consider expanding ROTL/ROTR on older GPUs. Currently on GPUs + // that don't have h/w rotation we lower them to multi-instruction assembly. + // See ROT*_sw in NVPTXIntrInfo.td + setOperationAction(ISD::ROTL, MVT::i64, Legal); + setOperationAction(ISD::ROTR, MVT::i64, Legal); + setOperationAction(ISD::ROTL, MVT::i32, Legal); + setOperationAction(ISD::ROTR, MVT::i32, Legal); setOperationAction(ISD::ROTL, MVT::i16, Expand); setOperationAction(ISD::ROTR, MVT::i16, Expand); |
