diff options
Diffstat (limited to 'llvm/lib/Target/SystemZ/SystemZISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZISelLowering.cpp | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp index 228ca6e3d1e..3ca2dbae6e4 100644 --- a/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp +++ b/llvm/lib/Target/SystemZ/SystemZISelLowering.cpp @@ -2800,14 +2800,10 @@ SystemZTargetLowering::emitAtomicLoadBinary(MachineInstr *MI, unsigned Tmp = MRI.createVirtualRegister(RC); BuildMI(MBB, DL, TII->get(BinOpcode), Tmp) .addReg(RotatedOldVal).addOperand(Src2); - if (BitSize < 32) + if (BitSize <= 32) // XILF with the upper BitSize bits set. BuildMI(MBB, DL, TII->get(SystemZ::XILF), RotatedNewVal) - .addReg(Tmp).addImm(uint32_t(~0 << (32 - BitSize))); - else if (BitSize == 32) - // XILF with every bit set. - BuildMI(MBB, DL, TII->get(SystemZ::XILF), RotatedNewVal) - .addReg(Tmp).addImm(~uint32_t(0)); + .addReg(Tmp).addImm(-1U << (32 - BitSize)); else { // Use LCGR and add -1 to the result, which is more compact than // an XILF, XILH pair. |
