[LLVMdev] computeMaskedBitsforTargetNode

[Bill Wendling]

On Thu, Nov 20, 2008 at 6:19 PM, Villmow, Micah <Micah.Villmow at amd.com> wrote:
> Can someone explain what this function is supposed to do? I've looked at
> PowerPC, Sparc, etc.. and can't really figure out what I should be doing
> here.
>
Here's what the comment in X86/X86ISelLowering.h has to say:

    /// computeMaskedBitsForTargetNode - Determine which of the bits
specified
    /// in Mask are known to be either zero or one and return them in
the
    /// KnownZero/KnownOne bitsets.


-bw