diff options
| -rw-r--r-- | lib/Target/AArch64/AArch64ISelLowering.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Target/AArch64/AArch64ISelLowering.cpp b/lib/Target/AArch64/AArch64ISelLowering.cpp index 739ca951dc..cea7f918df 100644 --- a/lib/Target/AArch64/AArch64ISelLowering.cpp +++ b/lib/Target/AArch64/AArch64ISelLowering.cpp @@ -2512,7 +2512,7 @@ static bool findMaskedBFI(SDValue N, SDValue &BFI, uint64_t &Mask, N = N.getOperand(0); } else { // Mask is the whole width. - Mask = (1ULL << N.getValueType().getSizeInBits()) - 1; + Mask = -1ULL >> (64 - N.getValueType().getSizeInBits()); } if (N.getOpcode() == AArch64ISD::BFI) { @@ -2590,7 +2590,7 @@ static SDValue tryCombineToBFI(SDNode *N, DAG.getConstant(Width, MVT::i64)); // Mask is trivial - if ((LHSMask | RHSMask) == (1ULL << VT.getSizeInBits()) - 1) + if ((LHSMask | RHSMask) == (-1ULL >> (64 - VT.getSizeInBits()))) return BFI; return DAG.getNode(ISD::AND, DL, VT, BFI, @@ -2660,7 +2660,7 @@ static SDValue tryCombineToLargerBFI(SDNode *N, BFI.getOperand(2), BFI.getOperand(3)); // If the masking is trivial, we don't need to create it. - if ((ExtraMask | ExistingMask) == (1ULL << VT.getSizeInBits()) - 1) + if ((ExtraMask | ExistingMask) == (-1ULL >> (64 - VT.getSizeInBits()))) return BFI; return DAG.getNode(ISD::AND, DL, VT, BFI, |