diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2017-07-13 19:25:18 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2017-07-13 19:25:18 +0000 |
| commit | ca089b24d48ef6fa8da2d0bb8c25bb802c4a95c0 (patch) | |
| tree | 3a28a772df9b17aef34f49e3c727965ad28c0c93 /lib/Analysis/DemandedBits.cpp | |
| parent | 9df3605dea17e84f8183581f6103bd0c79e2a606 (diff) | |
Notes
Diffstat (limited to 'lib/Analysis/DemandedBits.cpp')
| -rw-r--r-- | lib/Analysis/DemandedBits.cpp | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/lib/Analysis/DemandedBits.cpp b/lib/Analysis/DemandedBits.cpp index 926b28d6094a..9c53f9140ca3 100644 --- a/lib/Analysis/DemandedBits.cpp +++ b/lib/Analysis/DemandedBits.cpp @@ -143,9 +143,8 @@ void DemandedBits::determineLiveOperandBits( break; case Instruction::Shl: if (OperandNo == 0) - if (ConstantInt *CI = - dyn_cast<ConstantInt>(UserI->getOperand(1))) { - uint64_t ShiftAmt = CI->getLimitedValue(BitWidth-1); + if (auto *ShiftAmtC = dyn_cast<ConstantInt>(UserI->getOperand(1))) { + uint64_t ShiftAmt = ShiftAmtC->getLimitedValue(BitWidth - 1); AB = AOut.lshr(ShiftAmt); // If the shift is nuw/nsw, then the high bits are not dead @@ -159,9 +158,8 @@ void DemandedBits::determineLiveOperandBits( break; case Instruction::LShr: if (OperandNo == 0) - if (ConstantInt *CI = - dyn_cast<ConstantInt>(UserI->getOperand(1))) { - uint64_t ShiftAmt = CI->getLimitedValue(BitWidth-1); + if (auto *ShiftAmtC = dyn_cast<ConstantInt>(UserI->getOperand(1))) { + uint64_t ShiftAmt = ShiftAmtC->getLimitedValue(BitWidth - 1); AB = AOut.shl(ShiftAmt); // If the shift is exact, then the low bits are not dead @@ -172,9 +170,8 @@ void DemandedBits::determineLiveOperandBits( break; case Instruction::AShr: if (OperandNo == 0) - if (ConstantInt *CI = - dyn_cast<ConstantInt>(UserI->getOperand(1))) { - uint64_t ShiftAmt = CI->getLimitedValue(BitWidth-1); + if (auto *ShiftAmtC = dyn_cast<ConstantInt>(UserI->getOperand(1))) { + uint64_t ShiftAmt = ShiftAmtC->getLimitedValue(BitWidth - 1); AB = AOut.shl(ShiftAmt); // Because the high input bit is replicated into the // high-order bits of the result, if we need any of those |