Displaying 1 result from an estimated 1 matches for "_isbitset31".
2015 Jan 23
2
[LLVMdev] X86TarIgetLowering::LowerToBT
> icc generates testq for 0-30 and btq for 31-63.
> That seems like a small bug in the bit 31 case.
You can’t use testq for bit 31, because the immediate gets sign-extended. You *can* use the 32b form, of course.