311   uint64_t ShiftAmount = cast<ConstantSDNode>(N->getOperand(1))->getZExtValue();  in LowerShifts()  local
320     ShiftAmount = ShiftAmount % VT.getSizeInBits();  in LowerShifts()
324     ShiftAmount = ShiftAmount % VT.getSizeInBits();  in LowerShifts()
338     if (Op.getOpcode() == ISD::SHL && 4 <= ShiftAmount && ShiftAmount < 7) {  in LowerShifts()
343       ShiftAmount -= 4;  in LowerShifts()
344     } else if (Op.getOpcode() == ISD::SRL && 4 <= ShiftAmount &&  in LowerShifts()
345                ShiftAmount < 7) {  in LowerShifts()
350       ShiftAmount -= 4;  in LowerShifts()
351     } else if (Op.getOpcode() == ISD::SHL && ShiftAmount == 7) {  in LowerShifts()
355       ShiftAmount = 0;  in LowerShifts()
356     } else if (Op.getOpcode() == ISD::SRL && ShiftAmount == 7) {  in LowerShifts()
360       ShiftAmount = 0;  in LowerShifts()
361     } else if (Op.getOpcode() == ISD::SRA && ShiftAmount == 6) {  in LowerShifts()
365       ShiftAmount = 0;  in LowerShifts()
366     } else if (Op.getOpcode() == ISD::SRA && ShiftAmount == 7) {  in LowerShifts()
370       ShiftAmount = 0;  in LowerShifts()
375       switch (ShiftAmount) {  in LowerShifts()
379         ShiftAmount = 0;  in LowerShifts()
384         ShiftAmount = 0;  in LowerShifts()
389         ShiftAmount = 0;  in LowerShifts()
394     if (4 <= ShiftAmount && ShiftAmount < 8)  in LowerShifts()
399         ShiftAmount -= 4;  in LowerShifts()
404         ShiftAmount -= 4;  in LowerShifts()
409     else if (8 <= ShiftAmount && ShiftAmount < 12)  in LowerShifts()
414         ShiftAmount -= 8;  in LowerShifts()
421         ShiftAmount -= 8;  in LowerShifts()
428         ShiftAmount -= 8;  in LowerShifts()
435     else if (12 <= ShiftAmount)  in LowerShifts()
440         ShiftAmount -= 12;  in LowerShifts()
447         ShiftAmount -= 12;  in LowerShifts()
454         ShiftAmount -= 8;  in LowerShifts()
463   while (ShiftAmount--) {  in LowerShifts()