At 06:31 -0800 on 11/21/2013, Jon Perryman wrote about Re: Moves and others:

There's no problem with having an inline targe for the EX
instruction. It's used regularly by at least 1 ISV. The instruction
get's executed twice but the second time has the instructions and
data already in the pipe. I wonder if the second instruction fetch
offsets the second execution of the instruction?  Jon Perryman.

Note: The 2nd (ie: In Line as opposed to EX'ed) execution will use a
length of 1 (since the instruction's length parm is "0").

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