diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index 144aea85083..e65b1f1aa0a 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -689,6 +689,14 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM, setOperationAction(ISD::SRA, MVT::v2i64, Legal); setOperationAction(ISD::SRL, MVT::v2i64, Legal); + // 128 bit shifts can be accomplished via 3 instructions for SHL and + // SRL, but not for SRA because of the instructions available: + // VS{RL} and VS{RL}O. However due to direct move costs, it's not worth + // doing + setOperationAction(ISD::SHL, MVT::v1i128, Expand); + setOperationAction(ISD::SRL, MVT::v1i128, Expand); + setOperationAction(ISD::SRA, MVT::v1i128, Expand); + setOperationAction(ISD::SETCC, MVT::v2i64, Legal); } else { @@ -742,6 +750,13 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM, if (Subtarget.hasP9Vector()) { setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v4i32, Custom); setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v4f32, Custom); + + // 128 bit shifts can be accomplished via 3 instructions for SHL and + // SRL, but not for SRA because of the instructions available: + // VS{RL} and VS{RL}O. + setOperationAction(ISD::SHL, MVT::v1i128, Legal); + setOperationAction(ISD::SRL, MVT::v1i128, Legal); + setOperationAction(ISD::SRA, MVT::v1i128, Expand); } } |
