llvm dev - Sep 2016 - Receiving LLV Error in Custom Backend

Hi,

I am receiving an LLVM Error from a custom 16-bit backend I am creating.  I
am having trouble understanding the error/problem and how to go about
solving it.  The error is:

LLVM ERROR: Cannot select: t29: i32,ch = load<LD2[%x.addr], anyext from
i16> t14, FrameIndex:i16<0>, undef:i16
  t7: i16 = FrameIndex<0>
  t9: i16 = undef
In function: mul_add


Can anyone provide any pointers as to what the problem is and potential
places I should look to fix it?

Thanks and best regards,

Mush
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