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| author | Craig Topper <craig.topper@gmail.com> | 2017-04-28 16:58:05 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2017-04-28 16:58:05 +0000 |
| commit | 24db6b800fcdf0b45f1e2489ec3a7fb57937f0d1 (patch) | |
| tree | 9bb13c2474c0f2d0e37ee8db12b9c27b7ebc4fa2 /llvm/lib/Analysis/DemandedBits.cpp | |
| parent | 96d6ee857653f7b155fa96e5200de3a527ec31c2 (diff) | |
| download | bcm5719-llvm-24db6b800fcdf0b45f1e2489ec3a7fb57937f0d1.tar.gz bcm5719-llvm-24db6b800fcdf0b45f1e2489ec3a7fb57937f0d1.zip | |
[APInt] Add clearSignBit method. Use it and setSignBit in a few places. NFCI
llvm-svn: 301656
Diffstat (limited to 'llvm/lib/Analysis/DemandedBits.cpp')
| -rw-r--r-- | llvm/lib/Analysis/DemandedBits.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/DemandedBits.cpp b/llvm/lib/Analysis/DemandedBits.cpp index 285339deaaf..9f5dc531823 100644 --- a/llvm/lib/Analysis/DemandedBits.cpp +++ b/llvm/lib/Analysis/DemandedBits.cpp @@ -181,7 +181,7 @@ void DemandedBits::determineLiveOperandBits( // bits, then we must keep the highest input bit. if ((AOut & APInt::getHighBitsSet(BitWidth, ShiftAmt)) .getBoolValue()) - AB.setBit(BitWidth-1); + AB.setSignBit(); // If the shift is exact, then the low bits are not dead // (they must be zero). @@ -239,7 +239,7 @@ void DemandedBits::determineLiveOperandBits( if ((AOut & APInt::getHighBitsSet(AOut.getBitWidth(), AOut.getBitWidth() - BitWidth)) .getBoolValue()) - AB.setBit(BitWidth-1); + AB.setSignBit(); break; case Instruction::Select: if (OperandNo != 0) |
