Displaying 1 result from an estimated 1 matches for "tied_to_next".
2007 May 21
1
[LLVMdev] instruction writing two successive registers
...= extract_lo(Pn) // which is a = Rn,
b = extract_hi(Pn) // which is b = Rn+1
here it would be nice to assign 'a' to the first subregister of Pn (Rn),
and b to the second (Rn+1).
instead of using the pair register class, i also thought about adding a
register constraint - something like TIED_TO_NEXT.
can anyone give me an advise how to handle this special instruction?
thank you,
florian