diff options
Diffstat (limited to 'llvm/lib/Target/Mips/MipsISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/Mips/MipsISelLowering.cpp | 54 |
1 files changed, 28 insertions, 26 deletions
diff --git a/llvm/lib/Target/Mips/MipsISelLowering.cpp b/llvm/lib/Target/Mips/MipsISelLowering.cpp index d25f5637f57..c6045fe7d6d 100644 --- a/llvm/lib/Target/Mips/MipsISelLowering.cpp +++ b/llvm/lib/Target/Mips/MipsISelLowering.cpp @@ -261,6 +261,9 @@ MipsTargetLowering::MipsTargetLowering(const MipsTargetMachine &TM, setOperationAction(ISD::LOAD, MVT::i64, Custom); setOperationAction(ISD::STORE, MVT::i64, Custom); setOperationAction(ISD::FP_TO_SINT, MVT::i64, Custom); + setOperationAction(ISD::SHL_PARTS, MVT::i64, Custom); + setOperationAction(ISD::SRA_PARTS, MVT::i64, Custom); + setOperationAction(ISD::SRL_PARTS, MVT::i64, Custom); } if (!Subtarget.isGP64bit()) { @@ -2017,10 +2020,11 @@ SDValue MipsTargetLowering::lowerATOMIC_FENCE(SDValue Op, SDValue MipsTargetLowering::lowerShiftLeftParts(SDValue Op, SelectionDAG &DAG) const { SDLoc DL(Op); + MVT VT = Subtarget.isGP64bit() ? MVT::i64 : MVT::i32; + SDValue Lo = Op.getOperand(0), Hi = Op.getOperand(1); SDValue Shamt = Op.getOperand(2); - - // if shamt < 32: + // if shamt < (VT.bits): // lo = (shl lo, shamt) // hi = (or (shl hi, shamt) (srl (srl lo, 1), ~shamt)) // else: @@ -2028,18 +2032,17 @@ SDValue MipsTargetLowering::lowerShiftLeftParts(SDValue Op, // hi = (shl lo, shamt[4:0]) SDValue Not = DAG.getNode(ISD::XOR, DL, MVT::i32, Shamt, DAG.getConstant(-1, MVT::i32)); - SDValue ShiftRight1Lo = DAG.getNode(ISD::SRL, DL, MVT::i32, Lo, - DAG.getConstant(1, MVT::i32)); - SDValue ShiftRightLo = DAG.getNode(ISD::SRL, DL, MVT::i32, ShiftRight1Lo, - Not); - SDValue ShiftLeftHi = DAG.getNode(ISD::SHL, DL, MVT::i32, Hi, Shamt); - SDValue Or = DAG.getNode(ISD::OR, DL, MVT::i32, ShiftLeftHi, ShiftRightLo); - SDValue ShiftLeftLo = DAG.getNode(ISD::SHL, DL, MVT::i32, Lo, Shamt); + SDValue ShiftRight1Lo = DAG.getNode(ISD::SRL, DL, VT, Lo, + DAG.getConstant(1, VT)); + SDValue ShiftRightLo = DAG.getNode(ISD::SRL, DL, VT, ShiftRight1Lo, Not); + SDValue ShiftLeftHi = DAG.getNode(ISD::SHL, DL, VT, Hi, Shamt); + SDValue Or = DAG.getNode(ISD::OR, DL, VT, ShiftLeftHi, ShiftRightLo); + SDValue ShiftLeftLo = DAG.getNode(ISD::SHL, DL, VT, Lo, Shamt); SDValue Cond = DAG.getNode(ISD::AND, DL, MVT::i32, Shamt, DAG.getConstant(0x20, MVT::i32)); - Lo = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, - DAG.getConstant(0, MVT::i32), ShiftLeftLo); - Hi = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, ShiftLeftLo, Or); + Lo = DAG.getNode(ISD::SELECT, DL, VT, Cond, + DAG.getConstant(0, VT), ShiftLeftLo); + Hi = DAG.getNode(ISD::SELECT, DL, VT, Cond, ShiftLeftLo, Or); SDValue Ops[2] = {Lo, Hi}; return DAG.getMergeValues(Ops, DL); @@ -2050,8 +2053,9 @@ SDValue MipsTargetLowering::lowerShiftRightParts(SDValue Op, SelectionDAG &DAG, SDLoc DL(Op); SDValue Lo = Op.getOperand(0), Hi = Op.getOperand(1); SDValue Shamt = Op.getOperand(2); + MVT VT = Subtarget.isGP64bit() ? MVT::i64 : MVT::i32; - // if shamt < 32: + // if shamt < (VT.bits): // lo = (or (shl (shl hi, 1), ~shamt) (srl lo, shamt)) // if isSRA: // hi = (sra hi, shamt) @@ -2066,21 +2070,19 @@ SDValue MipsTargetLowering::lowerShiftRightParts(SDValue Op, SelectionDAG &DAG, // hi = 0 SDValue Not = DAG.getNode(ISD::XOR, DL, MVT::i32, Shamt, DAG.getConstant(-1, MVT::i32)); - SDValue ShiftLeft1Hi = DAG.getNode(ISD::SHL, DL, MVT::i32, Hi, - DAG.getConstant(1, MVT::i32)); - SDValue ShiftLeftHi = DAG.getNode(ISD::SHL, DL, MVT::i32, ShiftLeft1Hi, Not); - SDValue ShiftRightLo = DAG.getNode(ISD::SRL, DL, MVT::i32, Lo, Shamt); - SDValue Or = DAG.getNode(ISD::OR, DL, MVT::i32, ShiftLeftHi, ShiftRightLo); - SDValue ShiftRightHi = DAG.getNode(IsSRA ? ISD::SRA : ISD::SRL, DL, MVT::i32, - Hi, Shamt); + SDValue ShiftLeft1Hi = DAG.getNode(ISD::SHL, DL, VT, Hi, + DAG.getConstant(1, VT)); + SDValue ShiftLeftHi = DAG.getNode(ISD::SHL, DL, VT, ShiftLeft1Hi, Not); + SDValue ShiftRightLo = DAG.getNode(ISD::SRL, DL, VT, Lo, Shamt); + SDValue Or = DAG.getNode(ISD::OR, DL, VT, ShiftLeftHi, ShiftRightLo); + SDValue ShiftRightHi = DAG.getNode(IsSRA ? ISD::SRA : ISD::SRL, + DL, VT, Hi, Shamt); SDValue Cond = DAG.getNode(ISD::AND, DL, MVT::i32, Shamt, DAG.getConstant(0x20, MVT::i32)); - SDValue Shift31 = DAG.getNode(ISD::SRA, DL, MVT::i32, Hi, - DAG.getConstant(31, MVT::i32)); - Lo = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, ShiftRightHi, Or); - Hi = DAG.getNode(ISD::SELECT, DL, MVT::i32, Cond, - IsSRA ? Shift31 : DAG.getConstant(0, MVT::i32), - ShiftRightHi); + SDValue Shift31 = DAG.getNode(ISD::SRA, DL, VT, Hi, DAG.getConstant(31, VT)); + Lo = DAG.getNode(ISD::SELECT, DL, VT, Cond, ShiftRightHi, Or); + Hi = DAG.getNode(ISD::SELECT, DL, VT, Cond, + IsSRA ? Shift31 : DAG.getConstant(0, VT), ShiftRightHi); SDValue Ops[2] = {Lo, Hi}; return DAG.getMergeValues(Ops, DL); |
